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| author | cyfraeviolae <cyfraeviolae> | 2024-04-03 03:17:55 -0400 |
|---|---|---|
| committer | cyfraeviolae <cyfraeviolae> | 2024-04-03 03:17:55 -0400 |
| commit | 12cf076118570eebbff08c6b3090e0d4798447a1 (patch) | |
| tree | 3ba25e17e3c3a5e82316558ba3864b955919ff72 /venv/lib/python3.11/site-packages/websockets | |
| parent | c45662ff3923b34614ddcc8feb9195541166dcc5 (diff) | |
no venv
Diffstat (limited to 'venv/lib/python3.11/site-packages/websockets')
79 files changed, 0 insertions, 12145 deletions
diff --git a/venv/lib/python3.11/site-packages/websockets/__init__.py b/venv/lib/python3.11/site-packages/websockets/__init__.py deleted file mode 100644 index fdb028f..0000000 --- a/venv/lib/python3.11/site-packages/websockets/__init__.py +++ /dev/null @@ -1,190 +0,0 @@ -from __future__ import annotations - -import typing - -from .imports import lazy_import -from .version import version as __version__ # noqa: F401 - - -__all__ = [ - # .client - "ClientProtocol", - # .datastructures - "Headers", - "HeadersLike", - "MultipleValuesError", - # .exceptions - "AbortHandshake", - "ConnectionClosed", - "ConnectionClosedError", - "ConnectionClosedOK", - "DuplicateParameter", - "InvalidHandshake", - "InvalidHeader", - "InvalidHeaderFormat", - "InvalidHeaderValue", - "InvalidMessage", - "InvalidOrigin", - "InvalidParameterName", - "InvalidParameterValue", - "InvalidState", - "InvalidStatus", - "InvalidStatusCode", - "InvalidUpgrade", - "InvalidURI", - "NegotiationError", - "PayloadTooBig", - "ProtocolError", - "RedirectHandshake", - "SecurityError", - "WebSocketException", - "WebSocketProtocolError", - # .legacy.auth - "BasicAuthWebSocketServerProtocol", - "basic_auth_protocol_factory", - # .legacy.client - "WebSocketClientProtocol", - "connect", - "unix_connect", - # .legacy.protocol - "WebSocketCommonProtocol", - "broadcast", - # .legacy.server - "WebSocketServer", - "WebSocketServerProtocol", - "serve", - "unix_serve", - # .server - "ServerProtocol", - # .typing - "Data", - "ExtensionName", - "ExtensionParameter", - "LoggerLike", - "StatusLike", - "Origin", - "Subprotocol", -] - -# When type checking, import non-deprecated aliases eagerly. Else, import on demand. -if typing.TYPE_CHECKING: - from .client import ClientProtocol - from .datastructures import Headers, HeadersLike, MultipleValuesError - from .exceptions import ( - AbortHandshake, - ConnectionClosed, - ConnectionClosedError, - ConnectionClosedOK, - DuplicateParameter, - InvalidHandshake, - InvalidHeader, - InvalidHeaderFormat, - InvalidHeaderValue, - InvalidMessage, - InvalidOrigin, - InvalidParameterName, - InvalidParameterValue, - InvalidState, - InvalidStatus, - InvalidStatusCode, - InvalidUpgrade, - InvalidURI, - NegotiationError, - PayloadTooBig, - ProtocolError, - RedirectHandshake, - SecurityError, - WebSocketException, - WebSocketProtocolError, - ) - from .legacy.auth import ( - BasicAuthWebSocketServerProtocol, - basic_auth_protocol_factory, - ) - from .legacy.client import WebSocketClientProtocol, connect, unix_connect - from .legacy.protocol import WebSocketCommonProtocol, broadcast - from .legacy.server import ( - WebSocketServer, - WebSocketServerProtocol, - serve, - unix_serve, - ) - from .server import ServerProtocol - from .typing import ( - Data, - ExtensionName, - ExtensionParameter, - LoggerLike, - Origin, - StatusLike, - Subprotocol, - ) -else: - lazy_import( - globals(), - aliases={ - # .client - "ClientProtocol": ".client", - # .datastructures - "Headers": ".datastructures", - "HeadersLike": ".datastructures", - "MultipleValuesError": ".datastructures", - # .exceptions - "AbortHandshake": ".exceptions", - "ConnectionClosed": ".exceptions", - "ConnectionClosedError": ".exceptions", - "ConnectionClosedOK": ".exceptions", - "DuplicateParameter": ".exceptions", - "InvalidHandshake": ".exceptions", - "InvalidHeader": ".exceptions", - "InvalidHeaderFormat": ".exceptions", - "InvalidHeaderValue": ".exceptions", - "InvalidMessage": ".exceptions", - "InvalidOrigin": ".exceptions", - "InvalidParameterName": ".exceptions", - "InvalidParameterValue": ".exceptions", - "InvalidState": ".exceptions", - "InvalidStatus": ".exceptions", - "InvalidStatusCode": ".exceptions", - "InvalidUpgrade": ".exceptions", - "InvalidURI": ".exceptions", - "NegotiationError": ".exceptions", - "PayloadTooBig": ".exceptions", - "ProtocolError": ".exceptions", - "RedirectHandshake": ".exceptions", - "SecurityError": ".exceptions", - "WebSocketException": ".exceptions", - "WebSocketProtocolError": ".exceptions", - # .legacy.auth - "BasicAuthWebSocketServerProtocol": ".legacy.auth", - "basic_auth_protocol_factory": ".legacy.auth", - # .legacy.client - "WebSocketClientProtocol": ".legacy.client", - "connect": ".legacy.client", - "unix_connect": ".legacy.client", - # .legacy.protocol - "WebSocketCommonProtocol": ".legacy.protocol", - "broadcast": ".legacy.protocol", - # .legacy.server - "WebSocketServer": ".legacy.server", - "WebSocketServerProtocol": ".legacy.server", - "serve": ".legacy.server", - "unix_serve": ".legacy.server", - # .server - "ServerProtocol": ".server", - # .typing - "Data": ".typing", - "ExtensionName": ".typing", - "ExtensionParameter": ".typing", - "LoggerLike": ".typing", - "Origin": ".typing", - "StatusLike": "typing", - "Subprotocol": ".typing", - }, - deprecated_aliases={ - "framing": ".legacy", - "handshake": ".legacy", - "parse_uri": ".uri", - "WebSocketURI": ".uri", - }, - ) diff --git a/venv/lib/python3.11/site-packages/websockets/__main__.py b/venv/lib/python3.11/site-packages/websockets/__main__.py deleted file mode 100644 index f2ea5cf..0000000 --- a/venv/lib/python3.11/site-packages/websockets/__main__.py +++ /dev/null @@ -1,159 +0,0 @@ -from __future__ import annotations - -import argparse -import os -import signal -import sys -import threading - - -try: - import readline # noqa: F401 -except ImportError: # Windows has no `readline` normally - pass - -from .sync.client import ClientConnection, connect -from .version import version as websockets_version - - -if sys.platform == "win32": - - def win_enable_vt100() -> None: - """ - Enable VT-100 for console output on Windows. - - See also https://bugs.python.org/issue29059. - - """ - import ctypes - - STD_OUTPUT_HANDLE = ctypes.c_uint(-11) - INVALID_HANDLE_VALUE = ctypes.c_uint(-1) - ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x004 - - handle = ctypes.windll.kernel32.GetStdHandle(STD_OUTPUT_HANDLE) - if handle == INVALID_HANDLE_VALUE: - raise RuntimeError("unable to obtain stdout handle") - - cur_mode = ctypes.c_uint() - if ctypes.windll.kernel32.GetConsoleMode(handle, ctypes.byref(cur_mode)) == 0: - raise RuntimeError("unable to query current console mode") - - # ctypes ints lack support for the required bit-OR operation. - # Temporarily convert to Py int, do the OR and convert back. - py_int_mode = int.from_bytes(cur_mode, sys.byteorder) - new_mode = ctypes.c_uint(py_int_mode | ENABLE_VIRTUAL_TERMINAL_PROCESSING) - - if ctypes.windll.kernel32.SetConsoleMode(handle, new_mode) == 0: - raise RuntimeError("unable to set console mode") - - -def print_during_input(string: str) -> None: - sys.stdout.write( - # Save cursor position - "\N{ESC}7" - # Add a new line - "\N{LINE FEED}" - # Move cursor up - "\N{ESC}[A" - # Insert blank line, scroll last line down - "\N{ESC}[L" - # Print string in the inserted blank line - f"{string}\N{LINE FEED}" - # Restore cursor position - "\N{ESC}8" - # Move cursor down - "\N{ESC}[B" - ) - sys.stdout.flush() - - -def print_over_input(string: str) -> None: - sys.stdout.write( - # Move cursor to beginning of line - "\N{CARRIAGE RETURN}" - # Delete current line - "\N{ESC}[K" - # Print string - f"{string}\N{LINE FEED}" - ) - sys.stdout.flush() - - -def print_incoming_messages(websocket: ClientConnection, stop: threading.Event) -> None: - for message in websocket: - if isinstance(message, str): - print_during_input("< " + message) - else: - print_during_input("< (binary) " + message.hex()) - if not stop.is_set(): - # When the server closes the connection, raise KeyboardInterrupt - # in the main thread to exit the program. - if sys.platform == "win32": - ctrl_c = signal.CTRL_C_EVENT - else: - ctrl_c = signal.SIGINT - os.kill(os.getpid(), ctrl_c) - - -def main() -> None: - # Parse command line arguments. - parser = argparse.ArgumentParser( - prog="python -m websockets", - description="Interactive WebSocket client.", - add_help=False, - ) - group = parser.add_mutually_exclusive_group() - group.add_argument("--version", action="store_true") - group.add_argument("uri", metavar="<uri>", nargs="?") - args = parser.parse_args() - - if args.version: - print(f"websockets {websockets_version}") - return - - if args.uri is None: - parser.error("the following arguments are required: <uri>") - - # If we're on Windows, enable VT100 terminal support. - if sys.platform == "win32": - try: - win_enable_vt100() - except RuntimeError as exc: - sys.stderr.write( - f"Unable to set terminal to VT100 mode. This is only " - f"supported since Win10 anniversary update. Expect " - f"weird symbols on the terminal.\nError: {exc}\n" - ) - sys.stderr.flush() - - try: - websocket = connect(args.uri) - except Exception as exc: - print(f"Failed to connect to {args.uri}: {exc}.") - sys.exit(1) - else: - print(f"Connected to {args.uri}.") - - stop = threading.Event() - - # Start the thread that reads messages from the connection. - thread = threading.Thread(target=print_incoming_messages, args=(websocket, stop)) - thread.start() - - # Read from stdin in the main thread in order to receive signals. - try: - while True: - # Since there's no size limit, put_nowait is identical to put. - message = input("> ") - websocket.send(message) - except (KeyboardInterrupt, EOFError): # ^C, ^D - stop.set() - websocket.close() - print_over_input("Connection closed.") - - thread.join() - - -if __name__ == "__main__": - main() diff --git a/venv/lib/python3.11/site-packages/websockets/__pycache__/__init__.cpython-311.pyc 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#940 for why lazy_import isn't used here for backwards compatibility. -# See #1400 for why listing compatibility imports in __all__ helps PyCharm. -from .legacy.auth import * -from .legacy.auth import __all__ # noqa: F401 diff --git a/venv/lib/python3.11/site-packages/websockets/client.py b/venv/lib/python3.11/site-packages/websockets/client.py deleted file mode 100644 index b2f6220..0000000 --- a/venv/lib/python3.11/site-packages/websockets/client.py +++ /dev/null @@ -1,360 +0,0 @@ -from __future__ import annotations - -import warnings -from typing import Any, Generator, List, Optional, Sequence - -from .datastructures import Headers, MultipleValuesError -from .exceptions import ( - InvalidHandshake, - InvalidHeader, - InvalidHeaderValue, - InvalidStatus, - InvalidUpgrade, - NegotiationError, -) -from .extensions import ClientExtensionFactory, Extension -from .headers import ( - build_authorization_basic, - build_extension, - build_host, - build_subprotocol, - parse_connection, - parse_extension, - parse_subprotocol, - parse_upgrade, -) -from .http11 import Request, Response -from .protocol import CLIENT, CONNECTING, OPEN, Protocol, State -from .typing import ( - ConnectionOption, - ExtensionHeader, - LoggerLike, - Origin, - Subprotocol, - UpgradeProtocol, -) -from .uri import WebSocketURI -from .utils import accept_key, generate_key - - -# See #940 for why lazy_import isn't used here for backwards compatibility. -# See #1400 for why listing compatibility imports in __all__ helps PyCharm. -from .legacy.client import * # isort:skip # noqa: I001 -from .legacy.client import __all__ as legacy__all__ - - -__all__ = ["ClientProtocol"] + legacy__all__ - - -class ClientProtocol(Protocol): - """ - Sans-I/O implementation of a WebSocket client connection. - - Args: - wsuri: URI of the WebSocket server, parsed - with :func:`~websockets.uri.parse_uri`. - origin: value of the ``Origin`` header. This is useful when connecting - to a server that validates the ``Origin`` header to defend against - Cross-Site WebSocket Hijacking attacks. - extensions: list of supported extensions, in order in which they - should be tried. - subprotocols: list of supported subprotocols, in order of decreasing - preference. - state: initial state of the WebSocket connection. - max_size: maximum size of incoming messages in bytes; - :obj:`None` disables the limit. - logger: logger for this connection; - defaults to ``logging.getLogger("websockets.client")``; - see the :doc:`logging guide <../../topics/logging>` for details. - - """ - - def __init__( - self, - wsuri: WebSocketURI, - *, - origin: Optional[Origin] = None, - extensions: Optional[Sequence[ClientExtensionFactory]] = None, - subprotocols: Optional[Sequence[Subprotocol]] = None, - state: State = CONNECTING, - max_size: Optional[int] = 2**20, - logger: Optional[LoggerLike] = None, - ): - super().__init__( - side=CLIENT, - state=state, - max_size=max_size, - logger=logger, - ) - self.wsuri = wsuri - self.origin = origin - self.available_extensions = extensions - self.available_subprotocols = subprotocols - self.key = generate_key() - - def connect(self) -> Request: - """ - Create a handshake request to open a connection. - - You must send the handshake request with :meth:`send_request`. - - You can modify it before sending it, for example to add HTTP headers. - - Returns: - Request: WebSocket handshake request event to send to the server. - - """ - headers = Headers() - - headers["Host"] = build_host( - self.wsuri.host, self.wsuri.port, self.wsuri.secure - ) - - if self.wsuri.user_info: - headers["Authorization"] = build_authorization_basic(*self.wsuri.user_info) - - if self.origin is not None: - headers["Origin"] = self.origin - - headers["Upgrade"] = "websocket" - headers["Connection"] = "Upgrade" - headers["Sec-WebSocket-Key"] = self.key - headers["Sec-WebSocket-Version"] = "13" - - if self.available_extensions is not None: - extensions_header = build_extension( - [ - (extension_factory.name, extension_factory.get_request_params()) - for extension_factory in self.available_extensions - ] - ) - headers["Sec-WebSocket-Extensions"] = extensions_header - - if self.available_subprotocols is not None: - protocol_header = build_subprotocol(self.available_subprotocols) - headers["Sec-WebSocket-Protocol"] = protocol_header - - return Request(self.wsuri.resource_name, headers) - - def process_response(self, response: Response) -> None: - """ - Check a handshake response. - - Args: - request: WebSocket handshake response received from the server. - - Raises: - InvalidHandshake: if the handshake response is invalid. - - """ - - if response.status_code != 101: - raise InvalidStatus(response) - - headers = response.headers - - connection: List[ConnectionOption] = sum( - [parse_connection(value) for value in headers.get_all("Connection")], [] - ) - - if not any(value.lower() == "upgrade" for value in connection): - raise InvalidUpgrade( - "Connection", ", ".join(connection) if connection else None - ) - - upgrade: List[UpgradeProtocol] = sum( - [parse_upgrade(value) for value in headers.get_all("Upgrade")], [] - ) - - # For compatibility with non-strict implementations, ignore case when - # checking the Upgrade header. It's supposed to be 'WebSocket'. - if not (len(upgrade) == 1 and upgrade[0].lower() == "websocket"): - raise InvalidUpgrade("Upgrade", ", ".join(upgrade) if upgrade else None) - - try: - s_w_accept = headers["Sec-WebSocket-Accept"] - except KeyError as exc: - raise InvalidHeader("Sec-WebSocket-Accept") from exc - except MultipleValuesError as exc: - raise InvalidHeader( - "Sec-WebSocket-Accept", - "more than one Sec-WebSocket-Accept header found", - ) from exc - - if s_w_accept != accept_key(self.key): - raise InvalidHeaderValue("Sec-WebSocket-Accept", s_w_accept) - - self.extensions = self.process_extensions(headers) - - self.subprotocol = self.process_subprotocol(headers) - - def process_extensions(self, headers: Headers) -> List[Extension]: - """ - Handle the Sec-WebSocket-Extensions HTTP response header. - - Check that each extension is supported, as well as its parameters. - - :rfc:`6455` leaves the rules up to the specification of each - extension. - - To provide this level of flexibility, for each extension accepted by - the server, we check for a match with each extension available in the - client configuration. If no match is found, an exception is raised. - - If several variants of the same extension are accepted by the server, - it may be configured several times, which won't make sense in general. - Extensions must implement their own requirements. For this purpose, - the list of previously accepted extensions is provided. - - Other requirements, for example related to mandatory extensions or the - order of extensions, may be implemented by overriding this method. - - Args: - headers: WebSocket handshake response headers. - - Returns: - List[Extension]: List of accepted extensions. - - Raises: - InvalidHandshake: to abort the handshake. - - """ - accepted_extensions: List[Extension] = [] - - extensions = headers.get_all("Sec-WebSocket-Extensions") - - if extensions: - if self.available_extensions is None: - raise InvalidHandshake("no extensions supported") - - parsed_extensions: List[ExtensionHeader] = sum( - [parse_extension(header_value) for header_value in extensions], [] - ) - - for name, response_params in parsed_extensions: - for extension_factory in self.available_extensions: - # Skip non-matching extensions based on their name. - if extension_factory.name != name: - continue - - # Skip non-matching extensions based on their params. - try: - extension = extension_factory.process_response_params( - response_params, accepted_extensions - ) - except NegotiationError: - continue - - # Add matching extension to the final list. - accepted_extensions.append(extension) - - # Break out of the loop once we have a match. - break - - # If we didn't break from the loop, no extension in our list - # matched what the server sent. Fail the connection. - else: - raise NegotiationError( - f"Unsupported extension: " - f"name = {name}, params = {response_params}" - ) - - return accepted_extensions - - def process_subprotocol(self, headers: Headers) -> Optional[Subprotocol]: - """ - Handle the Sec-WebSocket-Protocol HTTP response header. - - If provided, check that it contains exactly one supported subprotocol. - - Args: - headers: WebSocket handshake response headers. - - Returns: - Optional[Subprotocol]: Subprotocol, if one was selected. - - """ - subprotocol: Optional[Subprotocol] = None - - subprotocols = headers.get_all("Sec-WebSocket-Protocol") - - if subprotocols: - if self.available_subprotocols is None: - raise InvalidHandshake("no subprotocols supported") - - parsed_subprotocols: Sequence[Subprotocol] = sum( - [parse_subprotocol(header_value) for header_value in subprotocols], [] - ) - - if len(parsed_subprotocols) > 1: - subprotocols_display = ", ".join(parsed_subprotocols) - raise InvalidHandshake(f"multiple subprotocols: {subprotocols_display}") - - subprotocol = parsed_subprotocols[0] - - if subprotocol not in self.available_subprotocols: - raise NegotiationError(f"unsupported subprotocol: {subprotocol}") - - return subprotocol - - def send_request(self, request: Request) -> None: - """ - Send a handshake request to the server. - - Args: - request: WebSocket handshake request event. - - """ - if self.debug: - self.logger.debug("> GET %s HTTP/1.1", request.path) - for key, value in request.headers.raw_items(): - self.logger.debug("> %s: %s", key, value) - - self.writes.append(request.serialize()) - - def parse(self) -> Generator[None, None, None]: - if self.state is CONNECTING: - try: - response = yield from Response.parse( - self.reader.read_line, - self.reader.read_exact, - self.reader.read_to_eof, - ) - except Exception as exc: - self.handshake_exc = exc - self.parser = self.discard() - next(self.parser) # start coroutine - yield - - if self.debug: - code, phrase = response.status_code, response.reason_phrase - self.logger.debug("< HTTP/1.1 %d %s", code, phrase) - for key, value in response.headers.raw_items(): - self.logger.debug("< %s: %s", key, value) - if response.body is not None: - self.logger.debug("< [body] (%d bytes)", len(response.body)) - - try: - self.process_response(response) - except InvalidHandshake as exc: - response._exception = exc - self.events.append(response) - self.handshake_exc = exc - self.parser = self.discard() - next(self.parser) # start coroutine - yield - - assert self.state is CONNECTING - self.state = OPEN - self.events.append(response) - - yield from super().parse() - - -class ClientConnection(ClientProtocol): - def __init__(self, *args: Any, **kwargs: Any) -> None: - warnings.warn( - "ClientConnection was renamed to ClientProtocol", - DeprecationWarning, - ) - super().__init__(*args, **kwargs) diff --git a/venv/lib/python3.11/site-packages/websockets/connection.py b/venv/lib/python3.11/site-packages/websockets/connection.py deleted file mode 100644 index 88bcda1..0000000 --- a/venv/lib/python3.11/site-packages/websockets/connection.py +++ /dev/null @@ -1,13 +0,0 @@ -from __future__ import annotations - -import warnings - -# lazy_import doesn't support this use case. -from .protocol import SEND_EOF, Protocol as Connection, Side, State # noqa: F401 - - -warnings.warn( - "websockets.connection was renamed to websockets.protocol " - "and Connection was renamed to Protocol", - DeprecationWarning, -) diff --git a/venv/lib/python3.11/site-packages/websockets/datastructures.py b/venv/lib/python3.11/site-packages/websockets/datastructures.py deleted file mode 100644 index a0a6484..0000000 --- a/venv/lib/python3.11/site-packages/websockets/datastructures.py +++ /dev/null @@ -1,194 +0,0 @@ -from __future__ import annotations - -from typing import ( - Any, - Dict, - Iterable, - Iterator, - List, - Mapping, - MutableMapping, - Protocol, - Tuple, - Union, -) - - -__all__ = ["Headers", "HeadersLike", "MultipleValuesError"] - - -class MultipleValuesError(LookupError): - """ - Exception raised when :class:`Headers` has more than one value for a key. - - """ - - def __str__(self) -> str: - # Implement the same logic as KeyError_str in Objects/exceptions.c. - if len(self.args) == 1: - return repr(self.args[0]) - return super().__str__() - - -class Headers(MutableMapping[str, str]): - """ - Efficient data structure for manipulating HTTP headers. - - A :class:`list` of ``(name, values)`` is inefficient for lookups. - - A :class:`dict` doesn't suffice because header names are case-insensitive - and multiple occurrences of headers with the same name are possible. - - :class:`Headers` stores HTTP headers in a hybrid data structure to provide - efficient insertions and lookups while preserving the original data. - - In order to account for multiple values with minimal hassle, - :class:`Headers` follows this logic: - - - When getting a header with ``headers[name]``: - - if there's no value, :exc:`KeyError` is raised; - - if there's exactly one value, it's returned; - - if there's more than one value, :exc:`MultipleValuesError` is raised. - - - When setting a header with ``headers[name] = value``, the value is - appended to the list of values for that header. - - - When deleting a header with ``del headers[name]``, all values for that - header are removed (this is slow). - - Other methods for manipulating headers are consistent with this logic. - - As long as no header occurs multiple times, :class:`Headers` behaves like - :class:`dict`, except keys are lower-cased to provide case-insensitivity. - - Two methods support manipulating multiple values explicitly: - - - :meth:`get_all` returns a list of all values for a header; - - :meth:`raw_items` returns an iterator of ``(name, values)`` pairs. - - """ - - __slots__ = ["_dict", "_list"] - - # Like dict, Headers accepts an optional "mapping or iterable" argument. - def __init__(self, *args: HeadersLike, **kwargs: str) -> None: - self._dict: Dict[str, List[str]] = {} - self._list: List[Tuple[str, str]] = [] - self.update(*args, **kwargs) - - def __str__(self) -> str: - return "".join(f"{key}: {value}\r\n" for key, value in self._list) + "\r\n" - - def __repr__(self) -> str: - return f"{self.__class__.__name__}({self._list!r})" - - def copy(self) -> Headers: - copy = self.__class__() - copy._dict = self._dict.copy() - copy._list = self._list.copy() - return copy - - def serialize(self) -> bytes: - # Since headers only contain ASCII characters, we can keep this simple. - return str(self).encode() - - # Collection methods - - def __contains__(self, key: object) -> bool: - return isinstance(key, str) and key.lower() in self._dict - - def __iter__(self) -> Iterator[str]: - return iter(self._dict) - - def __len__(self) -> int: - return len(self._dict) - - # MutableMapping methods - - def __getitem__(self, key: str) -> str: - value = self._dict[key.lower()] - if len(value) == 1: - return value[0] - else: - raise MultipleValuesError(key) - - def __setitem__(self, key: str, value: str) -> None: - self._dict.setdefault(key.lower(), []).append(value) - self._list.append((key, value)) - - def __delitem__(self, key: str) -> None: - key_lower = key.lower() - self._dict.__delitem__(key_lower) - # This is inefficient. Fortunately deleting HTTP headers is uncommon. - self._list = [(k, v) for k, v in self._list if k.lower() != key_lower] - - def __eq__(self, other: Any) -> bool: - if not isinstance(other, Headers): - return NotImplemented - return self._dict == other._dict - - def clear(self) -> None: - """ - Remove all headers. - - """ - self._dict = {} - self._list = [] - - def update(self, *args: HeadersLike, **kwargs: str) -> None: - """ - Update from a :class:`Headers` instance and/or keyword arguments. - - """ - args = tuple( - arg.raw_items() if isinstance(arg, Headers) else arg for arg in args - ) - super().update(*args, **kwargs) - - # Methods for handling multiple values - - def get_all(self, key: str) -> List[str]: - """ - Return the (possibly empty) list of all values for a header. - - Args: - key: header name. - - """ - return self._dict.get(key.lower(), []) - - def raw_items(self) -> Iterator[Tuple[str, str]]: - """ - Return an iterator of all values as ``(name, value)`` pairs. - - """ - return iter(self._list) - - -# copy of _typeshed.SupportsKeysAndGetItem. -class SupportsKeysAndGetItem(Protocol): # pragma: no cover - """ - Dict-like types with ``keys() -> str`` and ``__getitem__(key: str) -> str`` methods. - - """ - - def keys(self) -> Iterable[str]: - ... - - def __getitem__(self, key: str) -> str: - ... - - -HeadersLike = Union[ - Headers, - Mapping[str, str], - Iterable[Tuple[str, str]], - SupportsKeysAndGetItem, -] -""" -Types accepted where :class:`Headers` is expected. - -In addition to :class:`Headers` itself, this includes dict-like types where both -keys and values are :class:`str`. - -""" diff --git a/venv/lib/python3.11/site-packages/websockets/exceptions.py b/venv/lib/python3.11/site-packages/websockets/exceptions.py deleted file mode 100644 index f7169e3..0000000 --- a/venv/lib/python3.11/site-packages/websockets/exceptions.py +++ /dev/null @@ -1,405 +0,0 @@ -""" -:mod:`websockets.exceptions` defines the following exception hierarchy: - -* :exc:`WebSocketException` - * :exc:`ConnectionClosed` - * :exc:`ConnectionClosedError` - * :exc:`ConnectionClosedOK` - * :exc:`InvalidHandshake` - * :exc:`SecurityError` - * :exc:`InvalidMessage` - * :exc:`InvalidHeader` - * :exc:`InvalidHeaderFormat` - * :exc:`InvalidHeaderValue` - * :exc:`InvalidOrigin` - * :exc:`InvalidUpgrade` - * :exc:`InvalidStatus` - * :exc:`InvalidStatusCode` (legacy) - * :exc:`NegotiationError` - * :exc:`DuplicateParameter` - * :exc:`InvalidParameterName` - * :exc:`InvalidParameterValue` - * :exc:`AbortHandshake` - * :exc:`RedirectHandshake` - * :exc:`InvalidState` - * :exc:`InvalidURI` - * :exc:`PayloadTooBig` - * :exc:`ProtocolError` - -""" - -from __future__ import annotations - -import http -from typing import Optional - -from . import datastructures, frames, http11 -from .typing import StatusLike - - -__all__ = [ - "WebSocketException", - "ConnectionClosed", - "ConnectionClosedError", - "ConnectionClosedOK", - "InvalidHandshake", - "SecurityError", - "InvalidMessage", - "InvalidHeader", - "InvalidHeaderFormat", - "InvalidHeaderValue", - "InvalidOrigin", - "InvalidUpgrade", - "InvalidStatus", - "InvalidStatusCode", - "NegotiationError", - "DuplicateParameter", - "InvalidParameterName", - "InvalidParameterValue", - "AbortHandshake", - "RedirectHandshake", - "InvalidState", - "InvalidURI", - "PayloadTooBig", - "ProtocolError", - "WebSocketProtocolError", -] - - -class WebSocketException(Exception): - """ - Base class for all exceptions defined by websockets. - - """ - - -class ConnectionClosed(WebSocketException): - """ - Raised when trying to interact with a closed connection. - - Attributes: - rcvd (Optional[Close]): if a close frame was received, its code and - reason are available in ``rcvd.code`` and ``rcvd.reason``. - sent (Optional[Close]): if a close frame was sent, its code and reason - are available in ``sent.code`` and ``sent.reason``. - rcvd_then_sent (Optional[bool]): if close frames were received and - sent, this attribute tells in which order this happened, from the - perspective of this side of the connection. - - """ - - def __init__( - self, - rcvd: Optional[frames.Close], - sent: Optional[frames.Close], - rcvd_then_sent: Optional[bool] = None, - ) -> None: - self.rcvd = rcvd - self.sent = sent - self.rcvd_then_sent = rcvd_then_sent - - def __str__(self) -> str: - if self.rcvd is None: - if self.sent is None: - assert self.rcvd_then_sent is None - return "no close frame received or sent" - else: - assert self.rcvd_then_sent is None - return f"sent {self.sent}; no close frame received" - else: - if self.sent is None: - assert self.rcvd_then_sent is None - return f"received {self.rcvd}; no close frame sent" - else: - assert self.rcvd_then_sent is not None - if self.rcvd_then_sent: - return f"received {self.rcvd}; then sent {self.sent}" - else: - return f"sent {self.sent}; then received {self.rcvd}" - - # code and reason attributes are provided for backwards-compatibility - - @property - def code(self) -> int: - if self.rcvd is None: - return frames.CloseCode.ABNORMAL_CLOSURE - return self.rcvd.code - - @property - def reason(self) -> str: - if self.rcvd is None: - return "" - return self.rcvd.reason - - -class ConnectionClosedError(ConnectionClosed): - """ - Like :exc:`ConnectionClosed`, when the connection terminated with an error. - - A close frame with a code other than 1000 (OK) or 1001 (going away) was - received or sent, or the closing handshake didn't complete properly. - - """ - - -class ConnectionClosedOK(ConnectionClosed): - """ - Like :exc:`ConnectionClosed`, when the connection terminated properly. - - A close code with code 1000 (OK) or 1001 (going away) or without a code was - received and sent. - - """ - - -class InvalidHandshake(WebSocketException): - """ - Raised during the handshake when the WebSocket connection fails. - - """ - - -class SecurityError(InvalidHandshake): - """ - Raised when a handshake request or response breaks a security rule. - - Security limits are hard coded. - - """ - - -class InvalidMessage(InvalidHandshake): - """ - Raised when a handshake request or response is malformed. - - """ - - -class InvalidHeader(InvalidHandshake): - """ - Raised when an HTTP header doesn't have a valid format or value. - - """ - - def __init__(self, name: str, value: Optional[str] = None) -> None: - self.name = name - self.value = value - - def __str__(self) -> str: - if self.value is None: - return f"missing {self.name} header" - elif self.value == "": - return f"empty {self.name} header" - else: - return f"invalid {self.name} header: {self.value}" - - -class InvalidHeaderFormat(InvalidHeader): - """ - Raised when an HTTP header cannot be parsed. - - The format of the header doesn't match the grammar for that header. - - """ - - def __init__(self, name: str, error: str, header: str, pos: int) -> None: - super().__init__(name, f"{error} at {pos} in {header}") - - -class InvalidHeaderValue(InvalidHeader): - """ - Raised when an HTTP header has a wrong value. - - The format of the header is correct but a value isn't acceptable. - - """ - - -class InvalidOrigin(InvalidHeader): - """ - Raised when the Origin header in a request isn't allowed. - - """ - - def __init__(self, origin: Optional[str]) -> None: - super().__init__("Origin", origin) - - -class InvalidUpgrade(InvalidHeader): - """ - Raised when the Upgrade or Connection header isn't correct. - - """ - - -class InvalidStatus(InvalidHandshake): - """ - Raised when a handshake response rejects the WebSocket upgrade. - - """ - - def __init__(self, response: http11.Response) -> None: - self.response = response - - def __str__(self) -> str: - return ( - "server rejected WebSocket connection: " - f"HTTP {self.response.status_code:d}" - ) - - -class InvalidStatusCode(InvalidHandshake): - """ - Raised when a handshake response status code is invalid. - - """ - - def __init__(self, status_code: int, headers: datastructures.Headers) -> None: - self.status_code = status_code - self.headers = headers - - def __str__(self) -> str: - return f"server rejected WebSocket connection: HTTP {self.status_code}" - - -class NegotiationError(InvalidHandshake): - """ - Raised when negotiating an extension fails. - - """ - - -class DuplicateParameter(NegotiationError): - """ - Raised when a parameter name is repeated in an extension header. - - """ - - def __init__(self, name: str) -> None: - self.name = name - - def __str__(self) -> str: - return f"duplicate parameter: {self.name}" - - -class InvalidParameterName(NegotiationError): - """ - Raised when a parameter name in an extension header is invalid. - - """ - - def __init__(self, name: str) -> None: - self.name = name - - def __str__(self) -> str: - return f"invalid parameter name: {self.name}" - - -class InvalidParameterValue(NegotiationError): - """ - Raised when a parameter value in an extension header is invalid. - - """ - - def __init__(self, name: str, value: Optional[str]) -> None: - self.name = name - self.value = value - - def __str__(self) -> str: - if self.value is None: - return f"missing value for parameter {self.name}" - elif self.value == "": - return f"empty value for parameter {self.name}" - else: - return f"invalid value for parameter {self.name}: {self.value}" - - -class AbortHandshake(InvalidHandshake): - """ - Raised to abort the handshake on purpose and return an HTTP response. - - This exception is an implementation detail. - - The public API - is :meth:`~websockets.server.WebSocketServerProtocol.process_request`. - - Attributes: - status (~http.HTTPStatus): HTTP status code. - headers (Headers): HTTP response headers. - body (bytes): HTTP response body. - """ - - def __init__( - self, - status: StatusLike, - headers: datastructures.HeadersLike, - body: bytes = b"", - ) -> None: - # If a user passes an int instead of a HTTPStatus, fix it automatically. - self.status = http.HTTPStatus(status) - self.headers = datastructures.Headers(headers) - self.body = body - - def __str__(self) -> str: - return ( - f"HTTP {self.status:d}, " - f"{len(self.headers)} headers, " - f"{len(self.body)} bytes" - ) - - -class RedirectHandshake(InvalidHandshake): - """ - Raised when a handshake gets redirected. - - This exception is an implementation detail. - - """ - - def __init__(self, uri: str) -> None: - self.uri = uri - - def __str__(self) -> str: - return f"redirect to {self.uri}" - - -class InvalidState(WebSocketException, AssertionError): - """ - Raised when an operation is forbidden in the current state. - - This exception is an implementation detail. - - It should never be raised in normal circumstances. - - """ - - -class InvalidURI(WebSocketException): - """ - Raised when connecting to a URI that isn't a valid WebSocket URI. - - """ - - def __init__(self, uri: str, msg: str) -> None: - self.uri = uri - self.msg = msg - - def __str__(self) -> str: - return f"{self.uri} isn't a valid URI: {self.msg}" - - -class PayloadTooBig(WebSocketException): - """ - Raised when receiving a frame with a payload exceeding the maximum size. - - """ - - -class ProtocolError(WebSocketException): - """ - Raised when a frame breaks the protocol. - - """ - - -WebSocketProtocolError = ProtocolError # for backwards compatibility diff --git a/venv/lib/python3.11/site-packages/websockets/extensions/__init__.py b/venv/lib/python3.11/site-packages/websockets/extensions/__init__.py deleted file mode 100644 index 02838b9..0000000 --- a/venv/lib/python3.11/site-packages/websockets/extensions/__init__.py +++ /dev/null @@ -1,4 +0,0 @@ -from .base import * - - -__all__ = ["Extension", "ClientExtensionFactory", "ServerExtensionFactory"] diff --git a/venv/lib/python3.11/site-packages/websockets/extensions/__pycache__/__init__.cpython-311.pyc b/venv/lib/python3.11/site-packages/websockets/extensions/__pycache__/__init__.cpython-311.pyc Binary files differdeleted file mode 100644 index 746fb9a..0000000 --- a/venv/lib/python3.11/site-packages/websockets/extensions/__pycache__/__init__.cpython-311.pyc +++ /dev/null diff --git a/venv/lib/python3.11/site-packages/websockets/extensions/__pycache__/base.cpython-311.pyc b/venv/lib/python3.11/site-packages/websockets/extensions/__pycache__/base.cpython-311.pyc Binary files differdeleted file mode 100644 index 1f40641..0000000 --- a/venv/lib/python3.11/site-packages/websockets/extensions/__pycache__/base.cpython-311.pyc +++ /dev/null diff --git a/venv/lib/python3.11/site-packages/websockets/extensions/__pycache__/permessage_deflate.cpython-311.pyc b/venv/lib/python3.11/site-packages/websockets/extensions/__pycache__/permessage_deflate.cpython-311.pyc Binary files differdeleted file mode 100644 index 925006a..0000000 --- a/venv/lib/python3.11/site-packages/websockets/extensions/__pycache__/permessage_deflate.cpython-311.pyc +++ /dev/null diff --git a/venv/lib/python3.11/site-packages/websockets/extensions/base.py b/venv/lib/python3.11/site-packages/websockets/extensions/base.py deleted file mode 100644 index 6c481a4..0000000 --- a/venv/lib/python3.11/site-packages/websockets/extensions/base.py +++ /dev/null @@ -1,133 +0,0 @@ -from __future__ import annotations - -from typing import List, Optional, Sequence, Tuple - -from .. import frames -from ..typing import ExtensionName, ExtensionParameter - - -__all__ = ["Extension", "ClientExtensionFactory", "ServerExtensionFactory"] - - -class Extension: - """ - Base class for extensions. - - """ - - name: ExtensionName - """Extension identifier.""" - - def decode( - self, - frame: frames.Frame, - *, - max_size: Optional[int] = None, - ) -> frames.Frame: - """ - Decode an incoming frame. - - Args: - frame (Frame): incoming frame. - max_size: maximum payload size in bytes. - - Returns: - Frame: Decoded frame. - - Raises: - PayloadTooBig: if decoding the payload exceeds ``max_size``. - - """ - raise NotImplementedError - - def encode(self, frame: frames.Frame) -> frames.Frame: - """ - Encode an outgoing frame. - - Args: - frame (Frame): outgoing frame. - - Returns: - Frame: Encoded frame. - - """ - raise NotImplementedError - - -class ClientExtensionFactory: - """ - Base class for client-side extension factories. - - """ - - name: ExtensionName - """Extension identifier.""" - - def get_request_params(self) -> List[ExtensionParameter]: - """ - Build parameters to send to the server for this extension. - - Returns: - List[ExtensionParameter]: Parameters to send to the server. - - """ - raise NotImplementedError - - def process_response_params( - self, - params: Sequence[ExtensionParameter], - accepted_extensions: Sequence[Extension], - ) -> Extension: - """ - Process parameters received from the server. - - Args: - params (Sequence[ExtensionParameter]): parameters received from - the server for this extension. - accepted_extensions (Sequence[Extension]): list of previously - accepted extensions. - - Returns: - Extension: An extension instance. - - Raises: - NegotiationError: if parameters aren't acceptable. - - """ - raise NotImplementedError - - -class ServerExtensionFactory: - """ - Base class for server-side extension factories. - - """ - - name: ExtensionName - """Extension identifier.""" - - def process_request_params( - self, - params: Sequence[ExtensionParameter], - accepted_extensions: Sequence[Extension], - ) -> Tuple[List[ExtensionParameter], Extension]: - """ - Process parameters received from the client. - - Args: - params (Sequence[ExtensionParameter]): parameters received from - the client for this extension. - accepted_extensions (Sequence[Extension]): list of previously - accepted extensions. - - Returns: - Tuple[List[ExtensionParameter], Extension]: To accept the offer, - parameters to send to the client for this extension and an - extension instance. - - Raises: - NegotiationError: to reject the offer, if parameters received from - the client aren't acceptable. - - """ - raise NotImplementedError diff --git a/venv/lib/python3.11/site-packages/websockets/extensions/permessage_deflate.py b/venv/lib/python3.11/site-packages/websockets/extensions/permessage_deflate.py deleted file mode 100644 index b391837..0000000 --- a/venv/lib/python3.11/site-packages/websockets/extensions/permessage_deflate.py +++ /dev/null @@ -1,660 +0,0 @@ -from __future__ import annotations - -import dataclasses -import zlib -from typing import Any, Dict, List, Optional, Sequence, Tuple, Union - -from .. import exceptions, frames -from ..typing import ExtensionName, ExtensionParameter -from .base import ClientExtensionFactory, Extension, ServerExtensionFactory - - -__all__ = [ - "PerMessageDeflate", - "ClientPerMessageDeflateFactory", - "enable_client_permessage_deflate", - "ServerPerMessageDeflateFactory", - "enable_server_permessage_deflate", -] - -_EMPTY_UNCOMPRESSED_BLOCK = b"\x00\x00\xff\xff" - -_MAX_WINDOW_BITS_VALUES = [str(bits) for bits in range(8, 16)] - - -class PerMessageDeflate(Extension): - """ - Per-Message Deflate extension. - - """ - - name = ExtensionName("permessage-deflate") - - def __init__( - self, - remote_no_context_takeover: bool, - local_no_context_takeover: bool, - remote_max_window_bits: int, - local_max_window_bits: int, - compress_settings: Optional[Dict[Any, Any]] = None, - ) -> None: - """ - Configure the Per-Message Deflate extension. - - """ - if compress_settings is None: - compress_settings = {} - - assert remote_no_context_takeover in [False, True] - assert local_no_context_takeover in [False, True] - assert 8 <= remote_max_window_bits <= 15 - assert 8 <= local_max_window_bits <= 15 - assert "wbits" not in compress_settings - - self.remote_no_context_takeover = remote_no_context_takeover - self.local_no_context_takeover = local_no_context_takeover - self.remote_max_window_bits = remote_max_window_bits - self.local_max_window_bits = local_max_window_bits - self.compress_settings = compress_settings - - if not self.remote_no_context_takeover: - self.decoder = zlib.decompressobj(wbits=-self.remote_max_window_bits) - - if not self.local_no_context_takeover: - self.encoder = zlib.compressobj( - wbits=-self.local_max_window_bits, **self.compress_settings - ) - - # To handle continuation frames properly, we must keep track of - # whether that initial frame was encoded. - self.decode_cont_data = False - # There's no need for self.encode_cont_data because we always encode - # outgoing frames, so it would always be True. - - def __repr__(self) -> str: - return ( - f"PerMessageDeflate(" - f"remote_no_context_takeover={self.remote_no_context_takeover}, " - f"local_no_context_takeover={self.local_no_context_takeover}, " - f"remote_max_window_bits={self.remote_max_window_bits}, " - f"local_max_window_bits={self.local_max_window_bits})" - ) - - def decode( - self, - frame: frames.Frame, - *, - max_size: Optional[int] = None, - ) -> frames.Frame: - """ - Decode an incoming frame. - - """ - # Skip control frames. - if frame.opcode in frames.CTRL_OPCODES: - return frame - - # Handle continuation data frames: - # - skip if the message isn't encoded - # - reset "decode continuation data" flag if it's a final frame - if frame.opcode is frames.OP_CONT: - if not self.decode_cont_data: - return frame - if frame.fin: - self.decode_cont_data = False - - # Handle text and binary data frames: - # - skip if the message isn't encoded - # - unset the rsv1 flag on the first frame of a compressed message - # - set "decode continuation data" flag if it's a non-final frame - else: - if not frame.rsv1: - return frame - frame = dataclasses.replace(frame, rsv1=False) - if not frame.fin: - self.decode_cont_data = True - - # Re-initialize per-message decoder. - if self.remote_no_context_takeover: - self.decoder = zlib.decompressobj(wbits=-self.remote_max_window_bits) - - # Uncompress data. Protect against zip bombs by preventing zlib from - # decompressing more than max_length bytes (except when the limit is - # disabled with max_size = None). - data = frame.data - if frame.fin: - data += _EMPTY_UNCOMPRESSED_BLOCK - max_length = 0 if max_size is None else max_size - try: - data = self.decoder.decompress(data, max_length) - except zlib.error as exc: - raise exceptions.ProtocolError("decompression failed") from exc - if self.decoder.unconsumed_tail: - raise exceptions.PayloadTooBig(f"over size limit (? > {max_size} bytes)") - - # Allow garbage collection of the decoder if it won't be reused. - if frame.fin and self.remote_no_context_takeover: - del self.decoder - - return dataclasses.replace(frame, data=data) - - def encode(self, frame: frames.Frame) -> frames.Frame: - """ - Encode an outgoing frame. - - """ - # Skip control frames. - if frame.opcode in frames.CTRL_OPCODES: - return frame - - # Since we always encode messages, there's no "encode continuation - # data" flag similar to "decode continuation data" at this time. - - if frame.opcode is not frames.OP_CONT: - # Set the rsv1 flag on the first frame of a compressed message. - frame = dataclasses.replace(frame, rsv1=True) - # Re-initialize per-message decoder. - if self.local_no_context_takeover: - self.encoder = zlib.compressobj( - wbits=-self.local_max_window_bits, **self.compress_settings - ) - - # Compress data. - data = self.encoder.compress(frame.data) + self.encoder.flush(zlib.Z_SYNC_FLUSH) - if frame.fin and data.endswith(_EMPTY_UNCOMPRESSED_BLOCK): - data = data[:-4] - - # Allow garbage collection of the encoder if it won't be reused. - if frame.fin and self.local_no_context_takeover: - del self.encoder - - return dataclasses.replace(frame, data=data) - - -def _build_parameters( - server_no_context_takeover: bool, - client_no_context_takeover: bool, - server_max_window_bits: Optional[int], - client_max_window_bits: Optional[Union[int, bool]], -) -> List[ExtensionParameter]: - """ - Build a list of ``(name, value)`` pairs for some compression parameters. - - """ - params: List[ExtensionParameter] = [] - if server_no_context_takeover: - params.append(("server_no_context_takeover", None)) - if client_no_context_takeover: - params.append(("client_no_context_takeover", None)) - if server_max_window_bits: - params.append(("server_max_window_bits", str(server_max_window_bits))) - if client_max_window_bits is True: # only in handshake requests - params.append(("client_max_window_bits", None)) - elif client_max_window_bits: - params.append(("client_max_window_bits", str(client_max_window_bits))) - return params - - -def _extract_parameters( - params: Sequence[ExtensionParameter], *, is_server: bool -) -> Tuple[bool, bool, Optional[int], Optional[Union[int, bool]]]: - """ - Extract compression parameters from a list of ``(name, value)`` pairs. - - If ``is_server`` is :obj:`True`, ``client_max_window_bits`` may be - provided without a value. This is only allowed in handshake requests. - - """ - server_no_context_takeover: bool = False - client_no_context_takeover: bool = False - server_max_window_bits: Optional[int] = None - client_max_window_bits: Optional[Union[int, bool]] = None - - for name, value in params: - if name == "server_no_context_takeover": - if server_no_context_takeover: - raise exceptions.DuplicateParameter(name) - if value is None: - server_no_context_takeover = True - else: - raise exceptions.InvalidParameterValue(name, value) - - elif name == "client_no_context_takeover": - if client_no_context_takeover: - raise exceptions.DuplicateParameter(name) - if value is None: - client_no_context_takeover = True - else: - raise exceptions.InvalidParameterValue(name, value) - - elif name == "server_max_window_bits": - if server_max_window_bits is not None: - raise exceptions.DuplicateParameter(name) - if value in _MAX_WINDOW_BITS_VALUES: - server_max_window_bits = int(value) - else: - raise exceptions.InvalidParameterValue(name, value) - - elif name == "client_max_window_bits": - if client_max_window_bits is not None: - raise exceptions.DuplicateParameter(name) - if is_server and value is None: # only in handshake requests - client_max_window_bits = True - elif value in _MAX_WINDOW_BITS_VALUES: - client_max_window_bits = int(value) - else: - raise exceptions.InvalidParameterValue(name, value) - - else: - raise exceptions.InvalidParameterName(name) - - return ( - server_no_context_takeover, - client_no_context_takeover, - server_max_window_bits, - client_max_window_bits, - ) - - -class ClientPerMessageDeflateFactory(ClientExtensionFactory): - """ - Client-side extension factory for the Per-Message Deflate extension. - - Parameters behave as described in `section 7.1 of RFC 7692`_. - - .. _section 7.1 of RFC 7692: https://www.rfc-editor.org/rfc/rfc7692.html#section-7.1 - - Set them to :obj:`True` to include them in the negotiation offer without a - value or to an integer value to include them with this value. - - Args: - server_no_context_takeover: prevent server from using context takeover. - client_no_context_takeover: prevent client from using context takeover. - server_max_window_bits: maximum size of the server's LZ77 sliding window - in bits, between 8 and 15. - client_max_window_bits: maximum size of the client's LZ77 sliding window - in bits, between 8 and 15, or :obj:`True` to indicate support without - setting a limit. - compress_settings: additional keyword arguments for :func:`zlib.compressobj`, - excluding ``wbits``. - - """ - - name = ExtensionName("permessage-deflate") - - def __init__( - self, - server_no_context_takeover: bool = False, - client_no_context_takeover: bool = False, - server_max_window_bits: Optional[int] = None, - client_max_window_bits: Optional[Union[int, bool]] = True, - compress_settings: Optional[Dict[str, Any]] = None, - ) -> None: - """ - Configure the Per-Message Deflate extension factory. - - """ - if not (server_max_window_bits is None or 8 <= server_max_window_bits <= 15): - raise ValueError("server_max_window_bits must be between 8 and 15") - if not ( - client_max_window_bits is None - or client_max_window_bits is True - or 8 <= client_max_window_bits <= 15 - ): - raise ValueError("client_max_window_bits must be between 8 and 15") - if compress_settings is not None and "wbits" in compress_settings: - raise ValueError( - "compress_settings must not include wbits, " - "set client_max_window_bits instead" - ) - - self.server_no_context_takeover = server_no_context_takeover - self.client_no_context_takeover = client_no_context_takeover - self.server_max_window_bits = server_max_window_bits - self.client_max_window_bits = client_max_window_bits - self.compress_settings = compress_settings - - def get_request_params(self) -> List[ExtensionParameter]: - """ - Build request parameters. - - """ - return _build_parameters( - self.server_no_context_takeover, - self.client_no_context_takeover, - self.server_max_window_bits, - self.client_max_window_bits, - ) - - def process_response_params( - self, - params: Sequence[ExtensionParameter], - accepted_extensions: Sequence[Extension], - ) -> PerMessageDeflate: - """ - Process response parameters. - - Return an extension instance. - - """ - if any(other.name == self.name for other in accepted_extensions): - raise exceptions.NegotiationError(f"received duplicate {self.name}") - - # Request parameters are available in instance variables. - - # Load response parameters in local variables. - ( - server_no_context_takeover, - client_no_context_takeover, - server_max_window_bits, - client_max_window_bits, - ) = _extract_parameters(params, is_server=False) - - # After comparing the request and the response, the final - # configuration must be available in the local variables. - - # server_no_context_takeover - # - # Req. Resp. Result - # ------ ------ -------------------------------------------------- - # False False False - # False True True - # True False Error! - # True True True - - if self.server_no_context_takeover: - if not server_no_context_takeover: - raise exceptions.NegotiationError("expected server_no_context_takeover") - - # client_no_context_takeover - # - # Req. Resp. Result - # ------ ------ -------------------------------------------------- - # False False False - # False True True - # True False True - must change value - # True True True - - if self.client_no_context_takeover: - if not client_no_context_takeover: - client_no_context_takeover = True - - # server_max_window_bits - - # Req. Resp. Result - # ------ ------ -------------------------------------------------- - # None None None - # None 8≤M≤15 M - # 8≤N≤15 None Error! - # 8≤N≤15 8≤M≤N M - # 8≤N≤15 N<M≤15 Error! - - if self.server_max_window_bits is None: - pass - - else: - if server_max_window_bits is None: - raise exceptions.NegotiationError("expected server_max_window_bits") - elif server_max_window_bits > self.server_max_window_bits: - raise exceptions.NegotiationError("unsupported server_max_window_bits") - - # client_max_window_bits - - # Req. Resp. Result - # ------ ------ -------------------------------------------------- - # None None None - # None 8≤M≤15 Error! - # True None None - # True 8≤M≤15 M - # 8≤N≤15 None N - must change value - # 8≤N≤15 8≤M≤N M - # 8≤N≤15 N<M≤15 Error! - - if self.client_max_window_bits is None: - if client_max_window_bits is not None: - raise exceptions.NegotiationError("unexpected client_max_window_bits") - - elif self.client_max_window_bits is True: - pass - - else: - if client_max_window_bits is None: - client_max_window_bits = self.client_max_window_bits - elif client_max_window_bits > self.client_max_window_bits: - raise exceptions.NegotiationError("unsupported client_max_window_bits") - - return PerMessageDeflate( - server_no_context_takeover, # remote_no_context_takeover - client_no_context_takeover, # local_no_context_takeover - server_max_window_bits or 15, # remote_max_window_bits - client_max_window_bits or 15, # local_max_window_bits - self.compress_settings, - ) - - -def enable_client_permessage_deflate( - extensions: Optional[Sequence[ClientExtensionFactory]], -) -> Sequence[ClientExtensionFactory]: - """ - Enable Per-Message Deflate with default settings in client extensions. - - If the extension is already present, perhaps with non-default settings, - the configuration isn't changed. - - """ - if extensions is None: - extensions = [] - if not any( - extension_factory.name == ClientPerMessageDeflateFactory.name - for extension_factory in extensions - ): - extensions = list(extensions) + [ - ClientPerMessageDeflateFactory( - compress_settings={"memLevel": 5}, - ) - ] - return extensions - - -class ServerPerMessageDeflateFactory(ServerExtensionFactory): - """ - Server-side extension factory for the Per-Message Deflate extension. - - Parameters behave as described in `section 7.1 of RFC 7692`_. - - .. _section 7.1 of RFC 7692: https://www.rfc-editor.org/rfc/rfc7692.html#section-7.1 - - Set them to :obj:`True` to include them in the negotiation offer without a - value or to an integer value to include them with this value. - - Args: - server_no_context_takeover: prevent server from using context takeover. - client_no_context_takeover: prevent client from using context takeover. - server_max_window_bits: maximum size of the server's LZ77 sliding window - in bits, between 8 and 15. - client_max_window_bits: maximum size of the client's LZ77 sliding window - in bits, between 8 and 15. - compress_settings: additional keyword arguments for :func:`zlib.compressobj`, - excluding ``wbits``. - require_client_max_window_bits: do not enable compression at all if - client doesn't advertise support for ``client_max_window_bits``; - the default behavior is to enable compression without enforcing - ``client_max_window_bits``. - - """ - - name = ExtensionName("permessage-deflate") - - def __init__( - self, - server_no_context_takeover: bool = False, - client_no_context_takeover: bool = False, - server_max_window_bits: Optional[int] = None, - client_max_window_bits: Optional[int] = None, - compress_settings: Optional[Dict[str, Any]] = None, - require_client_max_window_bits: bool = False, - ) -> None: - """ - Configure the Per-Message Deflate extension factory. - - """ - if not (server_max_window_bits is None or 8 <= server_max_window_bits <= 15): - raise ValueError("server_max_window_bits must be between 8 and 15") - if not (client_max_window_bits is None or 8 <= client_max_window_bits <= 15): - raise ValueError("client_max_window_bits must be between 8 and 15") - if compress_settings is not None and "wbits" in compress_settings: - raise ValueError( - "compress_settings must not include wbits, " - "set server_max_window_bits instead" - ) - if client_max_window_bits is None and require_client_max_window_bits: - raise ValueError( - "require_client_max_window_bits is enabled, " - "but client_max_window_bits isn't configured" - ) - - self.server_no_context_takeover = server_no_context_takeover - self.client_no_context_takeover = client_no_context_takeover - self.server_max_window_bits = server_max_window_bits - self.client_max_window_bits = client_max_window_bits - self.compress_settings = compress_settings - self.require_client_max_window_bits = require_client_max_window_bits - - def process_request_params( - self, - params: Sequence[ExtensionParameter], - accepted_extensions: Sequence[Extension], - ) -> Tuple[List[ExtensionParameter], PerMessageDeflate]: - """ - Process request parameters. - - Return response params and an extension instance. - - """ - if any(other.name == self.name for other in accepted_extensions): - raise exceptions.NegotiationError(f"skipped duplicate {self.name}") - - # Load request parameters in local variables. - ( - server_no_context_takeover, - client_no_context_takeover, - server_max_window_bits, - client_max_window_bits, - ) = _extract_parameters(params, is_server=True) - - # Configuration parameters are available in instance variables. - - # After comparing the request and the configuration, the response must - # be available in the local variables. - - # server_no_context_takeover - # - # Config Req. Resp. - # ------ ------ -------------------------------------------------- - # False False False - # False True True - # True False True - must change value to True - # True True True - - if self.server_no_context_takeover: - if not server_no_context_takeover: - server_no_context_takeover = True - - # client_no_context_takeover - # - # Config Req. Resp. - # ------ ------ -------------------------------------------------- - # False False False - # False True True (or False) - # True False True - must change value to True - # True True True (or False) - - if self.client_no_context_takeover: - if not client_no_context_takeover: - client_no_context_takeover = True - - # server_max_window_bits - - # Config Req. Resp. - # ------ ------ -------------------------------------------------- - # None None None - # None 8≤M≤15 M - # 8≤N≤15 None N - must change value - # 8≤N≤15 8≤M≤N M - # 8≤N≤15 N<M≤15 N - must change value - - if self.server_max_window_bits is None: - pass - - else: - if server_max_window_bits is None: - server_max_window_bits = self.server_max_window_bits - elif server_max_window_bits > self.server_max_window_bits: - server_max_window_bits = self.server_max_window_bits - - # client_max_window_bits - - # Config Req. Resp. - # ------ ------ -------------------------------------------------- - # None None None - # None True None - must change value - # None 8≤M≤15 M (or None) - # 8≤N≤15 None None or Error! - # 8≤N≤15 True N - must change value - # 8≤N≤15 8≤M≤N M (or None) - # 8≤N≤15 N<M≤15 N - - if self.client_max_window_bits is None: - if client_max_window_bits is True: - client_max_window_bits = self.client_max_window_bits - - else: - if client_max_window_bits is None: - if self.require_client_max_window_bits: - raise exceptions.NegotiationError("required client_max_window_bits") - elif client_max_window_bits is True: - client_max_window_bits = self.client_max_window_bits - elif self.client_max_window_bits < client_max_window_bits: - client_max_window_bits = self.client_max_window_bits - - return ( - _build_parameters( - server_no_context_takeover, - client_no_context_takeover, - server_max_window_bits, - client_max_window_bits, - ), - PerMessageDeflate( - client_no_context_takeover, # remote_no_context_takeover - server_no_context_takeover, # local_no_context_takeover - client_max_window_bits or 15, # remote_max_window_bits - server_max_window_bits or 15, # local_max_window_bits - self.compress_settings, - ), - ) - - -def enable_server_permessage_deflate( - extensions: Optional[Sequence[ServerExtensionFactory]], -) -> Sequence[ServerExtensionFactory]: - """ - Enable Per-Message Deflate with default settings in server extensions. - - If the extension is already present, perhaps with non-default settings, - the configuration isn't changed. - - """ - if extensions is None: - extensions = [] - if not any( - ext_factory.name == ServerPerMessageDeflateFactory.name - for ext_factory in extensions - ): - extensions = list(extensions) + [ - ServerPerMessageDeflateFactory( - server_max_window_bits=12, - client_max_window_bits=12, - compress_settings={"memLevel": 5}, - ) - ] - return extensions diff --git a/venv/lib/python3.11/site-packages/websockets/frames.py b/venv/lib/python3.11/site-packages/websockets/frames.py deleted file mode 100644 index 6b1befb..0000000 --- a/venv/lib/python3.11/site-packages/websockets/frames.py +++ /dev/null @@ -1,470 +0,0 @@ -from __future__ import annotations - -import dataclasses -import enum -import io -import secrets -import struct -from typing import Callable, Generator, Optional, Sequence, Tuple - -from . import exceptions, extensions -from .typing import Data - - -try: - from .speedups import apply_mask -except ImportError: - from .utils import apply_mask - - -__all__ = [ - "Opcode", - "OP_CONT", - "OP_TEXT", - "OP_BINARY", - "OP_CLOSE", - "OP_PING", - "OP_PONG", - "DATA_OPCODES", - "CTRL_OPCODES", - "Frame", - "prepare_data", - "prepare_ctrl", - "Close", -] - - -class Opcode(enum.IntEnum): - """Opcode values for WebSocket frames.""" - - CONT, TEXT, BINARY = 0x00, 0x01, 0x02 - CLOSE, PING, PONG = 0x08, 0x09, 0x0A - - -OP_CONT = Opcode.CONT -OP_TEXT = Opcode.TEXT -OP_BINARY = Opcode.BINARY -OP_CLOSE = Opcode.CLOSE -OP_PING = Opcode.PING -OP_PONG = Opcode.PONG - -DATA_OPCODES = OP_CONT, OP_TEXT, OP_BINARY -CTRL_OPCODES = OP_CLOSE, OP_PING, OP_PONG - - -class CloseCode(enum.IntEnum): - """Close code values for WebSocket close frames.""" - - NORMAL_CLOSURE = 1000 - GOING_AWAY = 1001 - PROTOCOL_ERROR = 1002 - UNSUPPORTED_DATA = 1003 - # 1004 is reserved - NO_STATUS_RCVD = 1005 - ABNORMAL_CLOSURE = 1006 - INVALID_DATA = 1007 - POLICY_VIOLATION = 1008 - MESSAGE_TOO_BIG = 1009 - MANDATORY_EXTENSION = 1010 - INTERNAL_ERROR = 1011 - SERVICE_RESTART = 1012 - TRY_AGAIN_LATER = 1013 - BAD_GATEWAY = 1014 - TLS_HANDSHAKE = 1015 - - -# See https://www.iana.org/assignments/websocket/websocket.xhtml -CLOSE_CODE_EXPLANATIONS: dict[int, str] = { - CloseCode.NORMAL_CLOSURE: "OK", - CloseCode.GOING_AWAY: "going away", - CloseCode.PROTOCOL_ERROR: "protocol error", - CloseCode.UNSUPPORTED_DATA: "unsupported data", - CloseCode.NO_STATUS_RCVD: "no status received [internal]", - CloseCode.ABNORMAL_CLOSURE: "abnormal closure [internal]", - CloseCode.INVALID_DATA: "invalid frame payload data", - CloseCode.POLICY_VIOLATION: "policy violation", - CloseCode.MESSAGE_TOO_BIG: "message too big", - CloseCode.MANDATORY_EXTENSION: "mandatory extension", - CloseCode.INTERNAL_ERROR: "internal error", - CloseCode.SERVICE_RESTART: "service restart", - CloseCode.TRY_AGAIN_LATER: "try again later", - CloseCode.BAD_GATEWAY: "bad gateway", - CloseCode.TLS_HANDSHAKE: "TLS handshake failure [internal]", -} - - -# Close code that are allowed in a close frame. -# Using a set optimizes `code in EXTERNAL_CLOSE_CODES`. -EXTERNAL_CLOSE_CODES = { - CloseCode.NORMAL_CLOSURE, - CloseCode.GOING_AWAY, - CloseCode.PROTOCOL_ERROR, - CloseCode.UNSUPPORTED_DATA, - CloseCode.INVALID_DATA, - CloseCode.POLICY_VIOLATION, - CloseCode.MESSAGE_TOO_BIG, - CloseCode.MANDATORY_EXTENSION, - CloseCode.INTERNAL_ERROR, - CloseCode.SERVICE_RESTART, - CloseCode.TRY_AGAIN_LATER, - CloseCode.BAD_GATEWAY, -} - - -OK_CLOSE_CODES = { - CloseCode.NORMAL_CLOSURE, - CloseCode.GOING_AWAY, - CloseCode.NO_STATUS_RCVD, -} - - -BytesLike = bytes, bytearray, memoryview - - -@dataclasses.dataclass -class Frame: - """ - WebSocket frame. - - Attributes: - opcode: Opcode. - data: Payload data. - fin: FIN bit. - rsv1: RSV1 bit. - rsv2: RSV2 bit. - rsv3: RSV3 bit. - - Only these fields are needed. The MASK bit, payload length and masking-key - are handled on the fly when parsing and serializing frames. - - """ - - opcode: Opcode - data: bytes - fin: bool = True - rsv1: bool = False - rsv2: bool = False - rsv3: bool = False - - def __str__(self) -> str: - """ - Return a human-readable representation of a frame. - - """ - coding = None - length = f"{len(self.data)} byte{'' if len(self.data) == 1 else 's'}" - non_final = "" if self.fin else "continued" - - if self.opcode is OP_TEXT: - # Decoding only the beginning and the end is needlessly hard. - # Decode the entire payload then elide later if necessary. - data = repr(self.data.decode()) - elif self.opcode is OP_BINARY: - # We'll show at most the first 16 bytes and the last 8 bytes. - # Encode just what we need, plus two dummy bytes to elide later. - binary = self.data - if len(binary) > 25: - binary = b"".join([binary[:16], b"\x00\x00", binary[-8:]]) - data = " ".join(f"{byte:02x}" for byte in binary) - elif self.opcode is OP_CLOSE: - data = str(Close.parse(self.data)) - elif self.data: - # We don't know if a Continuation frame contains text or binary. - # Ping and Pong frames could contain UTF-8. - # Attempt to decode as UTF-8 and display it as text; fallback to - # binary. If self.data is a memoryview, it has no decode() method, - # which raises AttributeError. - try: - data = repr(self.data.decode()) - coding = "text" - except (UnicodeDecodeError, AttributeError): - binary = self.data - if len(binary) > 25: - binary = b"".join([binary[:16], b"\x00\x00", binary[-8:]]) - data = " ".join(f"{byte:02x}" for byte in binary) - coding = "binary" - else: - data = "''" - - if len(data) > 75: - data = data[:48] + "..." + data[-24:] - - metadata = ", ".join(filter(None, [coding, length, non_final])) - - return f"{self.opcode.name} {data} [{metadata}]" - - @classmethod - def parse( - cls, - read_exact: Callable[[int], Generator[None, None, bytes]], - *, - mask: bool, - max_size: Optional[int] = None, - extensions: Optional[Sequence[extensions.Extension]] = None, - ) -> Generator[None, None, Frame]: - """ - Parse a WebSocket frame. - - This is a generator-based coroutine. - - Args: - read_exact: generator-based coroutine that reads the requested - bytes or raises an exception if there isn't enough data. - mask: whether the frame should be masked i.e. whether the read - happens on the server side. - max_size: maximum payload size in bytes. - extensions: list of extensions, applied in reverse order. - - Raises: - EOFError: if the connection is closed without a full WebSocket frame. - UnicodeDecodeError: if the frame contains invalid UTF-8. - PayloadTooBig: if the frame's payload size exceeds ``max_size``. - ProtocolError: if the frame contains incorrect values. - - """ - # Read the header. - data = yield from read_exact(2) - head1, head2 = struct.unpack("!BB", data) - - # While not Pythonic, this is marginally faster than calling bool(). - fin = True if head1 & 0b10000000 else False - rsv1 = True if head1 & 0b01000000 else False - rsv2 = True if head1 & 0b00100000 else False - rsv3 = True if head1 & 0b00010000 else False - - try: - opcode = Opcode(head1 & 0b00001111) - except ValueError as exc: - raise exceptions.ProtocolError("invalid opcode") from exc - - if (True if head2 & 0b10000000 else False) != mask: - raise exceptions.ProtocolError("incorrect masking") - - length = head2 & 0b01111111 - if length == 126: - data = yield from read_exact(2) - (length,) = struct.unpack("!H", data) - elif length == 127: - data = yield from read_exact(8) - (length,) = struct.unpack("!Q", data) - if max_size is not None and length > max_size: - raise exceptions.PayloadTooBig( - f"over size limit ({length} > {max_size} bytes)" - ) - if mask: - mask_bytes = yield from read_exact(4) - - # Read the data. - data = yield from read_exact(length) - if mask: - data = apply_mask(data, mask_bytes) - - frame = cls(opcode, data, fin, rsv1, rsv2, rsv3) - - if extensions is None: - extensions = [] - for extension in reversed(extensions): - frame = extension.decode(frame, max_size=max_size) - - frame.check() - - return frame - - def serialize( - self, - *, - mask: bool, - extensions: Optional[Sequence[extensions.Extension]] = None, - ) -> bytes: - """ - Serialize a WebSocket frame. - - Args: - mask: whether the frame should be masked i.e. whether the write - happens on the client side. - extensions: list of extensions, applied in order. - - Raises: - ProtocolError: if the frame contains incorrect values. - - """ - self.check() - - if extensions is None: - extensions = [] - for extension in extensions: - self = extension.encode(self) - - output = io.BytesIO() - - # Prepare the header. - head1 = ( - (0b10000000 if self.fin else 0) - | (0b01000000 if self.rsv1 else 0) - | (0b00100000 if self.rsv2 else 0) - | (0b00010000 if self.rsv3 else 0) - | self.opcode - ) - - head2 = 0b10000000 if mask else 0 - - length = len(self.data) - if length < 126: - output.write(struct.pack("!BB", head1, head2 | length)) - elif length < 65536: - output.write(struct.pack("!BBH", head1, head2 | 126, length)) - else: - output.write(struct.pack("!BBQ", head1, head2 | 127, length)) - - if mask: - mask_bytes = secrets.token_bytes(4) - output.write(mask_bytes) - - # Prepare the data. - if mask: - data = apply_mask(self.data, mask_bytes) - else: - data = self.data - output.write(data) - - return output.getvalue() - - def check(self) -> None: - """ - Check that reserved bits and opcode have acceptable values. - - Raises: - ProtocolError: if a reserved bit or the opcode is invalid. - - """ - if self.rsv1 or self.rsv2 or self.rsv3: - raise exceptions.ProtocolError("reserved bits must be 0") - - if self.opcode in CTRL_OPCODES: - if len(self.data) > 125: - raise exceptions.ProtocolError("control frame too long") - if not self.fin: - raise exceptions.ProtocolError("fragmented control frame") - - -def prepare_data(data: Data) -> Tuple[int, bytes]: - """ - Convert a string or byte-like object to an opcode and a bytes-like object. - - This function is designed for data frames. - - If ``data`` is a :class:`str`, return ``OP_TEXT`` and a :class:`bytes` - object encoding ``data`` in UTF-8. - - If ``data`` is a bytes-like object, return ``OP_BINARY`` and a bytes-like - object. - - Raises: - TypeError: if ``data`` doesn't have a supported type. - - """ - if isinstance(data, str): - return OP_TEXT, data.encode("utf-8") - elif isinstance(data, BytesLike): - return OP_BINARY, data - else: - raise TypeError("data must be str or bytes-like") - - -def prepare_ctrl(data: Data) -> bytes: - """ - Convert a string or byte-like object to bytes. - - This function is designed for ping and pong frames. - - If ``data`` is a :class:`str`, return a :class:`bytes` object encoding - ``data`` in UTF-8. - - If ``data`` is a bytes-like object, return a :class:`bytes` object. - - Raises: - TypeError: if ``data`` doesn't have a supported type. - - """ - if isinstance(data, str): - return data.encode("utf-8") - elif isinstance(data, BytesLike): - return bytes(data) - else: - raise TypeError("data must be str or bytes-like") - - -@dataclasses.dataclass -class Close: - """ - Code and reason for WebSocket close frames. - - Attributes: - code: Close code. - reason: Close reason. - - """ - - code: int - reason: str - - def __str__(self) -> str: - """ - Return a human-readable representation of a close code and reason. - - """ - if 3000 <= self.code < 4000: - explanation = "registered" - elif 4000 <= self.code < 5000: - explanation = "private use" - else: - explanation = CLOSE_CODE_EXPLANATIONS.get(self.code, "unknown") - result = f"{self.code} ({explanation})" - - if self.reason: - result = f"{result} {self.reason}" - - return result - - @classmethod - def parse(cls, data: bytes) -> Close: - """ - Parse the payload of a close frame. - - Args: - data: payload of the close frame. - - Raises: - ProtocolError: if data is ill-formed. - UnicodeDecodeError: if the reason isn't valid UTF-8. - - """ - if len(data) >= 2: - (code,) = struct.unpack("!H", data[:2]) - reason = data[2:].decode("utf-8") - close = cls(code, reason) - close.check() - return close - elif len(data) == 0: - return cls(CloseCode.NO_STATUS_RCVD, "") - else: - raise exceptions.ProtocolError("close frame too short") - - def serialize(self) -> bytes: - """ - Serialize the payload of a close frame. - - """ - self.check() - return struct.pack("!H", self.code) + self.reason.encode("utf-8") - - def check(self) -> None: - """ - Check that the close code has a valid value for a close frame. - - Raises: - ProtocolError: if the close code is invalid. - - """ - if not (self.code in EXTERNAL_CLOSE_CODES or 3000 <= self.code < 5000): - raise exceptions.ProtocolError("invalid status code") diff --git a/venv/lib/python3.11/site-packages/websockets/headers.py b/venv/lib/python3.11/site-packages/websockets/headers.py deleted file mode 100644 index 9ae3035..0000000 --- a/venv/lib/python3.11/site-packages/websockets/headers.py +++ /dev/null @@ -1,587 +0,0 @@ -from __future__ import annotations - -import base64 -import binascii -import ipaddress -import re -from typing import Callable, List, Optional, Sequence, Tuple, TypeVar, cast - -from . import exceptions -from .typing import ( - ConnectionOption, - ExtensionHeader, - ExtensionName, - ExtensionParameter, - Subprotocol, - UpgradeProtocol, -) - - -__all__ = [ - "build_host", - "parse_connection", - "parse_upgrade", - "parse_extension", - "build_extension", - "parse_subprotocol", - "build_subprotocol", - "validate_subprotocols", - "build_www_authenticate_basic", - "parse_authorization_basic", - "build_authorization_basic", -] - - -T = TypeVar("T") - - -def build_host(host: str, port: int, secure: bool) -> str: - """ - Build a ``Host`` header. - - """ - # https://www.rfc-editor.org/rfc/rfc3986.html#section-3.2.2 - # IPv6 addresses must be enclosed in brackets. - try: - address = ipaddress.ip_address(host) - except ValueError: - # host is a hostname - pass - else: - # host is an IP address - if address.version == 6: - host = f"[{host}]" - - if port != (443 if secure else 80): - host = f"{host}:{port}" - - return host - - -# To avoid a dependency on a parsing library, we implement manually the ABNF -# described in https://www.rfc-editor.org/rfc/rfc6455.html#section-9.1 and -# https://www.rfc-editor.org/rfc/rfc7230.html#appendix-B. - - -def peek_ahead(header: str, pos: int) -> Optional[str]: - """ - Return the next character from ``header`` at the given position. - - Return :obj:`None` at the end of ``header``. - - We never need to peek more than one character ahead. - - """ - return None if pos == len(header) else header[pos] - - -_OWS_re = re.compile(r"[\t ]*") - - -def parse_OWS(header: str, pos: int) -> int: - """ - Parse optional whitespace from ``header`` at the given position. - - Return the new position. - - The whitespace itself isn't returned because it isn't significant. - - """ - # There's always a match, possibly empty, whose content doesn't matter. - match = _OWS_re.match(header, pos) - assert match is not None - return match.end() - - -_token_re = re.compile(r"[-!#$%&\'*+.^_`|~0-9a-zA-Z]+") - - -def parse_token(header: str, pos: int, header_name: str) -> Tuple[str, int]: - """ - Parse a token from ``header`` at the given position. - - Return the token value and the new position. - - Raises: - InvalidHeaderFormat: on invalid inputs. - - """ - match = _token_re.match(header, pos) - if match is None: - raise exceptions.InvalidHeaderFormat(header_name, "expected token", header, pos) - return match.group(), match.end() - - -_quoted_string_re = re.compile( - r'"(?:[\x09\x20-\x21\x23-\x5b\x5d-\x7e]|\\[\x09\x20-\x7e\x80-\xff])*"' -) - - -_unquote_re = re.compile(r"\\([\x09\x20-\x7e\x80-\xff])") - - -def parse_quoted_string(header: str, pos: int, header_name: str) -> Tuple[str, int]: - """ - Parse a quoted string from ``header`` at the given position. - - Return the unquoted value and the new position. - - Raises: - InvalidHeaderFormat: on invalid inputs. - - """ - match = _quoted_string_re.match(header, pos) - if match is None: - raise exceptions.InvalidHeaderFormat( - header_name, "expected quoted string", header, pos - ) - return _unquote_re.sub(r"\1", match.group()[1:-1]), match.end() - - -_quotable_re = re.compile(r"[\x09\x20-\x7e\x80-\xff]*") - - -_quote_re = re.compile(r"([\x22\x5c])") - - -def build_quoted_string(value: str) -> str: - """ - Format ``value`` as a quoted string. - - This is the reverse of :func:`parse_quoted_string`. - - """ - match = _quotable_re.fullmatch(value) - if match is None: - raise ValueError("invalid characters for quoted-string encoding") - return '"' + _quote_re.sub(r"\\\1", value) + '"' - - -def parse_list( - parse_item: Callable[[str, int, str], Tuple[T, int]], - header: str, - pos: int, - header_name: str, -) -> List[T]: - """ - Parse a comma-separated list from ``header`` at the given position. - - This is appropriate for parsing values with the following grammar: - - 1#item - - ``parse_item`` parses one item. - - ``header`` is assumed not to start or end with whitespace. - - (This function is designed for parsing an entire header value and - :func:`~websockets.http.read_headers` strips whitespace from values.) - - Return a list of items. - - Raises: - InvalidHeaderFormat: on invalid inputs. - - """ - # Per https://www.rfc-editor.org/rfc/rfc7230.html#section-7, "a recipient - # MUST parse and ignore a reasonable number of empty list elements"; - # hence while loops that remove extra delimiters. - - # Remove extra delimiters before the first item. - while peek_ahead(header, pos) == ",": - pos = parse_OWS(header, pos + 1) - - items = [] - while True: - # Loop invariant: a item starts at pos in header. - item, pos = parse_item(header, pos, header_name) - items.append(item) - pos = parse_OWS(header, pos) - - # We may have reached the end of the header. - if pos == len(header): - break - - # There must be a delimiter after each element except the last one. - if peek_ahead(header, pos) == ",": - pos = parse_OWS(header, pos + 1) - else: - raise exceptions.InvalidHeaderFormat( - header_name, "expected comma", header, pos - ) - - # Remove extra delimiters before the next item. - while peek_ahead(header, pos) == ",": - pos = parse_OWS(header, pos + 1) - - # We may have reached the end of the header. - if pos == len(header): - break - - # Since we only advance in the header by one character with peek_ahead() - # or with the end position of a regex match, we can't overshoot the end. - assert pos == len(header) - - return items - - -def parse_connection_option( - header: str, pos: int, header_name: str -) -> Tuple[ConnectionOption, int]: - """ - Parse a Connection option from ``header`` at the given position. - - Return the protocol value and the new position. - - Raises: - InvalidHeaderFormat: on invalid inputs. - - """ - item, pos = parse_token(header, pos, header_name) - return cast(ConnectionOption, item), pos - - -def parse_connection(header: str) -> List[ConnectionOption]: - """ - Parse a ``Connection`` header. - - Return a list of HTTP connection options. - - Args - header: value of the ``Connection`` header. - - Raises: - InvalidHeaderFormat: on invalid inputs. - - """ - return parse_list(parse_connection_option, header, 0, "Connection") - - -_protocol_re = re.compile( - r"[-!#$%&\'*+.^_`|~0-9a-zA-Z]+(?:/[-!#$%&\'*+.^_`|~0-9a-zA-Z]+)?" -) - - -def parse_upgrade_protocol( - header: str, pos: int, header_name: str -) -> Tuple[UpgradeProtocol, int]: - """ - Parse an Upgrade protocol from ``header`` at the given position. - - Return the protocol value and the new position. - - Raises: - InvalidHeaderFormat: on invalid inputs. - - """ - match = _protocol_re.match(header, pos) - if match is None: - raise exceptions.InvalidHeaderFormat( - header_name, "expected protocol", header, pos - ) - return cast(UpgradeProtocol, match.group()), match.end() - - -def parse_upgrade(header: str) -> List[UpgradeProtocol]: - """ - Parse an ``Upgrade`` header. - - Return a list of HTTP protocols. - - Args: - header: value of the ``Upgrade`` header. - - Raises: - InvalidHeaderFormat: on invalid inputs. - - """ - return parse_list(parse_upgrade_protocol, header, 0, "Upgrade") - - -def parse_extension_item_param( - header: str, pos: int, header_name: str -) -> Tuple[ExtensionParameter, int]: - """ - Parse a single extension parameter from ``header`` at the given position. - - Return a ``(name, value)`` pair and the new position. - - Raises: - InvalidHeaderFormat: on invalid inputs. - - """ - # Extract parameter name. - name, pos = parse_token(header, pos, header_name) - pos = parse_OWS(header, pos) - # Extract parameter value, if there is one. - value: Optional[str] = None - if peek_ahead(header, pos) == "=": - pos = parse_OWS(header, pos + 1) - if peek_ahead(header, pos) == '"': - pos_before = pos # for proper error reporting below - value, pos = parse_quoted_string(header, pos, header_name) - # https://www.rfc-editor.org/rfc/rfc6455.html#section-9.1 says: - # the value after quoted-string unescaping MUST conform to - # the 'token' ABNF. - if _token_re.fullmatch(value) is None: - raise exceptions.InvalidHeaderFormat( - header_name, "invalid quoted header content", header, pos_before - ) - else: - value, pos = parse_token(header, pos, header_name) - pos = parse_OWS(header, pos) - - return (name, value), pos - - -def parse_extension_item( - header: str, pos: int, header_name: str -) -> Tuple[ExtensionHeader, int]: - """ - Parse an extension definition from ``header`` at the given position. - - Return an ``(extension name, parameters)`` pair, where ``parameters`` is a - list of ``(name, value)`` pairs, and the new position. - - Raises: - InvalidHeaderFormat: on invalid inputs. - - """ - # Extract extension name. - name, pos = parse_token(header, pos, header_name) - pos = parse_OWS(header, pos) - # Extract all parameters. - parameters = [] - while peek_ahead(header, pos) == ";": - pos = parse_OWS(header, pos + 1) - parameter, pos = parse_extension_item_param(header, pos, header_name) - parameters.append(parameter) - return (cast(ExtensionName, name), parameters), pos - - -def parse_extension(header: str) -> List[ExtensionHeader]: - """ - Parse a ``Sec-WebSocket-Extensions`` header. - - Return a list of WebSocket extensions and their parameters in this format:: - - [ - ( - 'extension name', - [ - ('parameter name', 'parameter value'), - .... - ] - ), - ... - ] - - Parameter values are :obj:`None` when no value is provided. - - Raises: - InvalidHeaderFormat: on invalid inputs. - - """ - return parse_list(parse_extension_item, header, 0, "Sec-WebSocket-Extensions") - - -parse_extension_list = parse_extension # alias for backwards compatibility - - -def build_extension_item( - name: ExtensionName, parameters: List[ExtensionParameter] -) -> str: - """ - Build an extension definition. - - This is the reverse of :func:`parse_extension_item`. - - """ - return "; ".join( - [cast(str, name)] - + [ - # Quoted strings aren't necessary because values are always tokens. - name if value is None else f"{name}={value}" - for name, value in parameters - ] - ) - - -def build_extension(extensions: Sequence[ExtensionHeader]) -> str: - """ - Build a ``Sec-WebSocket-Extensions`` header. - - This is the reverse of :func:`parse_extension`. - - """ - return ", ".join( - build_extension_item(name, parameters) for name, parameters in extensions - ) - - -build_extension_list = build_extension # alias for backwards compatibility - - -def parse_subprotocol_item( - header: str, pos: int, header_name: str -) -> Tuple[Subprotocol, int]: - """ - Parse a subprotocol from ``header`` at the given position. - - Return the subprotocol value and the new position. - - Raises: - InvalidHeaderFormat: on invalid inputs. - - """ - item, pos = parse_token(header, pos, header_name) - return cast(Subprotocol, item), pos - - -def parse_subprotocol(header: str) -> List[Subprotocol]: - """ - Parse a ``Sec-WebSocket-Protocol`` header. - - Return a list of WebSocket subprotocols. - - Raises: - InvalidHeaderFormat: on invalid inputs. - - """ - return parse_list(parse_subprotocol_item, header, 0, "Sec-WebSocket-Protocol") - - -parse_subprotocol_list = parse_subprotocol # alias for backwards compatibility - - -def build_subprotocol(subprotocols: Sequence[Subprotocol]) -> str: - """ - Build a ``Sec-WebSocket-Protocol`` header. - - This is the reverse of :func:`parse_subprotocol`. - - """ - return ", ".join(subprotocols) - - -build_subprotocol_list = build_subprotocol # alias for backwards compatibility - - -def validate_subprotocols(subprotocols: Sequence[Subprotocol]) -> None: - """ - Validate that ``subprotocols`` is suitable for :func:`build_subprotocol`. - - """ - if not isinstance(subprotocols, Sequence): - raise TypeError("subprotocols must be a list") - if isinstance(subprotocols, str): - raise TypeError("subprotocols must be a list, not a str") - for subprotocol in subprotocols: - if not _token_re.fullmatch(subprotocol): - raise ValueError(f"invalid subprotocol: {subprotocol}") - - -def build_www_authenticate_basic(realm: str) -> str: - """ - Build a ``WWW-Authenticate`` header for HTTP Basic Auth. - - Args: - realm: identifier of the protection space. - - """ - # https://www.rfc-editor.org/rfc/rfc7617.html#section-2 - realm = build_quoted_string(realm) - charset = build_quoted_string("UTF-8") - return f"Basic realm={realm}, charset={charset}" - - -_token68_re = re.compile(r"[A-Za-z0-9-._~+/]+=*") - - -def parse_token68(header: str, pos: int, header_name: str) -> Tuple[str, int]: - """ - Parse a token68 from ``header`` at the given position. - - Return the token value and the new position. - - Raises: - InvalidHeaderFormat: on invalid inputs. - - """ - match = _token68_re.match(header, pos) - if match is None: - raise exceptions.InvalidHeaderFormat( - header_name, "expected token68", header, pos - ) - return match.group(), match.end() - - -def parse_end(header: str, pos: int, header_name: str) -> None: - """ - Check that parsing reached the end of header. - - """ - if pos < len(header): - raise exceptions.InvalidHeaderFormat(header_name, "trailing data", header, pos) - - -def parse_authorization_basic(header: str) -> Tuple[str, str]: - """ - Parse an ``Authorization`` header for HTTP Basic Auth. - - Return a ``(username, password)`` tuple. - - Args: - header: value of the ``Authorization`` header. - - Raises: - InvalidHeaderFormat: on invalid inputs. - InvalidHeaderValue: on unsupported inputs. - - """ - # https://www.rfc-editor.org/rfc/rfc7235.html#section-2.1 - # https://www.rfc-editor.org/rfc/rfc7617.html#section-2 - scheme, pos = parse_token(header, 0, "Authorization") - if scheme.lower() != "basic": - raise exceptions.InvalidHeaderValue( - "Authorization", - f"unsupported scheme: {scheme}", - ) - if peek_ahead(header, pos) != " ": - raise exceptions.InvalidHeaderFormat( - "Authorization", "expected space after scheme", header, pos - ) - pos += 1 - basic_credentials, pos = parse_token68(header, pos, "Authorization") - parse_end(header, pos, "Authorization") - - try: - user_pass = base64.b64decode(basic_credentials.encode()).decode() - except binascii.Error: - raise exceptions.InvalidHeaderValue( - "Authorization", - "expected base64-encoded credentials", - ) from None - try: - username, password = user_pass.split(":", 1) - except ValueError: - raise exceptions.InvalidHeaderValue( - "Authorization", - "expected username:password credentials", - ) from None - - return username, password - - -def build_authorization_basic(username: str, password: str) -> str: - """ - Build an ``Authorization`` header for HTTP Basic Auth. - - This is the reverse of :func:`parse_authorization_basic`. - - """ - # https://www.rfc-editor.org/rfc/rfc7617.html#section-2 - assert ":" not in username - user_pass = f"{username}:{password}" - basic_credentials = base64.b64encode(user_pass.encode()).decode() - return "Basic " + basic_credentials diff --git a/venv/lib/python3.11/site-packages/websockets/http.py b/venv/lib/python3.11/site-packages/websockets/http.py deleted file mode 100644 index 9f86f6a..0000000 --- a/venv/lib/python3.11/site-packages/websockets/http.py +++ /dev/null @@ -1,35 +0,0 @@ -from __future__ import annotations - -import sys -import typing - -from .imports import lazy_import -from .version import version as websockets_version - - -# For backwards compatibility: - - -# When type checking, import non-deprecated aliases eagerly. Else, import on demand. -if typing.TYPE_CHECKING: - from .datastructures import Headers, MultipleValuesError # noqa: F401 -else: - lazy_import( - globals(), - # Headers and MultipleValuesError used to be defined in this module. - aliases={ - "Headers": ".datastructures", - "MultipleValuesError": ".datastructures", - }, - deprecated_aliases={ - "read_request": ".legacy.http", - "read_response": ".legacy.http", - }, - ) - - -__all__ = ["USER_AGENT"] - - -PYTHON_VERSION = "{}.{}".format(*sys.version_info) -USER_AGENT = f"Python/{PYTHON_VERSION} websockets/{websockets_version}" diff --git a/venv/lib/python3.11/site-packages/websockets/http11.py b/venv/lib/python3.11/site-packages/websockets/http11.py deleted file mode 100644 index ec4e3b8..0000000 --- a/venv/lib/python3.11/site-packages/websockets/http11.py +++ /dev/null @@ -1,364 +0,0 @@ -from __future__ import annotations - -import dataclasses -import re -import warnings -from typing import Callable, Generator, Optional - -from . import datastructures, exceptions - - -# Maximum total size of headers is around 128 * 8 KiB = 1 MiB. -MAX_HEADERS = 128 - -# Limit request line and header lines. 8KiB is the most common default -# configuration of popular HTTP servers. -MAX_LINE = 8192 - -# Support for HTTP response bodies is intended to read an error message -# returned by a server. It isn't designed to perform large file transfers. -MAX_BODY = 2**20 # 1 MiB - - -def d(value: bytes) -> str: - """ - Decode a bytestring for interpolating into an error message. - - """ - return value.decode(errors="backslashreplace") - - -# See https://www.rfc-editor.org/rfc/rfc7230.html#appendix-B. - -# Regex for validating header names. - -_token_re = re.compile(rb"[-!#$%&\'*+.^_`|~0-9a-zA-Z]+") - -# Regex for validating header values. - -# We don't attempt to support obsolete line folding. - -# Include HTAB (\x09), SP (\x20), VCHAR (\x21-\x7e), obs-text (\x80-\xff). - -# The ABNF is complicated because it attempts to express that optional -# whitespace is ignored. We strip whitespace and don't revalidate that. - -# See also https://www.rfc-editor.org/errata_search.php?rfc=7230&eid=4189 - -_value_re = re.compile(rb"[\x09\x20-\x7e\x80-\xff]*") - - -@dataclasses.dataclass -class Request: - """ - WebSocket handshake request. - - Attributes: - path: Request path, including optional query. - headers: Request headers. - """ - - path: str - headers: datastructures.Headers - # body isn't useful is the context of this library. - - _exception: Optional[Exception] = None - - @property - def exception(self) -> Optional[Exception]: # pragma: no cover - warnings.warn( - "Request.exception is deprecated; " - "use ServerProtocol.handshake_exc instead", - DeprecationWarning, - ) - return self._exception - - @classmethod - def parse( - cls, - read_line: Callable[[int], Generator[None, None, bytes]], - ) -> Generator[None, None, Request]: - """ - Parse a WebSocket handshake request. - - This is a generator-based coroutine. - - The request path isn't URL-decoded or validated in any way. - - The request path and headers are expected to contain only ASCII - characters. Other characters are represented with surrogate escapes. - - :meth:`parse` doesn't attempt to read the request body because - WebSocket handshake requests don't have one. If the request contains a - body, it may be read from the data stream after :meth:`parse` returns. - - Args: - read_line: generator-based coroutine that reads a LF-terminated - line or raises an exception if there isn't enough data - - Raises: - EOFError: if the connection is closed without a full HTTP request. - SecurityError: if the request exceeds a security limit. - ValueError: if the request isn't well formatted. - - """ - # https://www.rfc-editor.org/rfc/rfc7230.html#section-3.1.1 - - # Parsing is simple because fixed values are expected for method and - # version and because path isn't checked. Since WebSocket software tends - # to implement HTTP/1.1 strictly, there's little need for lenient parsing. - - try: - request_line = yield from parse_line(read_line) - except EOFError as exc: - raise EOFError("connection closed while reading HTTP request line") from exc - - try: - method, raw_path, version = request_line.split(b" ", 2) - except ValueError: # not enough values to unpack (expected 3, got 1-2) - raise ValueError(f"invalid HTTP request line: {d(request_line)}") from None - - if method != b"GET": - raise ValueError(f"unsupported HTTP method: {d(method)}") - if version != b"HTTP/1.1": - raise ValueError(f"unsupported HTTP version: {d(version)}") - path = raw_path.decode("ascii", "surrogateescape") - - headers = yield from parse_headers(read_line) - - # https://www.rfc-editor.org/rfc/rfc7230.html#section-3.3.3 - - if "Transfer-Encoding" in headers: - raise NotImplementedError("transfer codings aren't supported") - - if "Content-Length" in headers: - raise ValueError("unsupported request body") - - return cls(path, headers) - - def serialize(self) -> bytes: - """ - Serialize a WebSocket handshake request. - - """ - # Since the request line and headers only contain ASCII characters, - # we can keep this simple. - request = f"GET {self.path} HTTP/1.1\r\n".encode() - request += self.headers.serialize() - return request - - -@dataclasses.dataclass -class Response: - """ - WebSocket handshake response. - - Attributes: - status_code: Response code. - reason_phrase: Response reason. - headers: Response headers. - body: Response body, if any. - - """ - - status_code: int - reason_phrase: str - headers: datastructures.Headers - body: Optional[bytes] = None - - _exception: Optional[Exception] = None - - @property - def exception(self) -> Optional[Exception]: # pragma: no cover - warnings.warn( - "Response.exception is deprecated; " - "use ClientProtocol.handshake_exc instead", - DeprecationWarning, - ) - return self._exception - - @classmethod - def parse( - cls, - read_line: Callable[[int], Generator[None, None, bytes]], - read_exact: Callable[[int], Generator[None, None, bytes]], - read_to_eof: Callable[[int], Generator[None, None, bytes]], - ) -> Generator[None, None, Response]: - """ - Parse a WebSocket handshake response. - - This is a generator-based coroutine. - - The reason phrase and headers are expected to contain only ASCII - characters. Other characters are represented with surrogate escapes. - - Args: - read_line: generator-based coroutine that reads a LF-terminated - line or raises an exception if there isn't enough data. - read_exact: generator-based coroutine that reads the requested - bytes or raises an exception if there isn't enough data. - read_to_eof: generator-based coroutine that reads until the end - of the stream. - - Raises: - EOFError: if the connection is closed without a full HTTP response. - SecurityError: if the response exceeds a security limit. - LookupError: if the response isn't well formatted. - ValueError: if the response isn't well formatted. - - """ - # https://www.rfc-editor.org/rfc/rfc7230.html#section-3.1.2 - - try: - status_line = yield from parse_line(read_line) - except EOFError as exc: - raise EOFError("connection closed while reading HTTP status line") from exc - - try: - version, raw_status_code, raw_reason = status_line.split(b" ", 2) - except ValueError: # not enough values to unpack (expected 3, got 1-2) - raise ValueError(f"invalid HTTP status line: {d(status_line)}") from None - - if version != b"HTTP/1.1": - raise ValueError(f"unsupported HTTP version: {d(version)}") - try: - status_code = int(raw_status_code) - except ValueError: # invalid literal for int() with base 10 - raise ValueError( - f"invalid HTTP status code: {d(raw_status_code)}" - ) from None - if not 100 <= status_code < 1000: - raise ValueError(f"unsupported HTTP status code: {d(raw_status_code)}") - if not _value_re.fullmatch(raw_reason): - raise ValueError(f"invalid HTTP reason phrase: {d(raw_reason)}") - reason = raw_reason.decode() - - headers = yield from parse_headers(read_line) - - # https://www.rfc-editor.org/rfc/rfc7230.html#section-3.3.3 - - if "Transfer-Encoding" in headers: - raise NotImplementedError("transfer codings aren't supported") - - # Since websockets only does GET requests (no HEAD, no CONNECT), all - # responses except 1xx, 204, and 304 include a message body. - if 100 <= status_code < 200 or status_code == 204 or status_code == 304: - body = None - else: - content_length: Optional[int] - try: - # MultipleValuesError is sufficiently unlikely that we don't - # attempt to handle it. Instead we document that its parent - # class, LookupError, may be raised. - raw_content_length = headers["Content-Length"] - except KeyError: - content_length = None - else: - content_length = int(raw_content_length) - - if content_length is None: - try: - body = yield from read_to_eof(MAX_BODY) - except RuntimeError: - raise exceptions.SecurityError( - f"body too large: over {MAX_BODY} bytes" - ) - elif content_length > MAX_BODY: - raise exceptions.SecurityError( - f"body too large: {content_length} bytes" - ) - else: - body = yield from read_exact(content_length) - - return cls(status_code, reason, headers, body) - - def serialize(self) -> bytes: - """ - Serialize a WebSocket handshake response. - - """ - # Since the status line and headers only contain ASCII characters, - # we can keep this simple. - response = f"HTTP/1.1 {self.status_code} {self.reason_phrase}\r\n".encode() - response += self.headers.serialize() - if self.body is not None: - response += self.body - return response - - -def parse_headers( - read_line: Callable[[int], Generator[None, None, bytes]], -) -> Generator[None, None, datastructures.Headers]: - """ - Parse HTTP headers. - - Non-ASCII characters are represented with surrogate escapes. - - Args: - read_line: generator-based coroutine that reads a LF-terminated line - or raises an exception if there isn't enough data. - - Raises: - EOFError: if the connection is closed without complete headers. - SecurityError: if the request exceeds a security limit. - ValueError: if the request isn't well formatted. - - """ - # https://www.rfc-editor.org/rfc/rfc7230.html#section-3.2 - - # We don't attempt to support obsolete line folding. - - headers = datastructures.Headers() - for _ in range(MAX_HEADERS + 1): - try: - line = yield from parse_line(read_line) - except EOFError as exc: - raise EOFError("connection closed while reading HTTP headers") from exc - if line == b"": - break - - try: - raw_name, raw_value = line.split(b":", 1) - except ValueError: # not enough values to unpack (expected 2, got 1) - raise ValueError(f"invalid HTTP header line: {d(line)}") from None - if not _token_re.fullmatch(raw_name): - raise ValueError(f"invalid HTTP header name: {d(raw_name)}") - raw_value = raw_value.strip(b" \t") - if not _value_re.fullmatch(raw_value): - raise ValueError(f"invalid HTTP header value: {d(raw_value)}") - - name = raw_name.decode("ascii") # guaranteed to be ASCII at this point - value = raw_value.decode("ascii", "surrogateescape") - headers[name] = value - - else: - raise exceptions.SecurityError("too many HTTP headers") - - return headers - - -def parse_line( - read_line: Callable[[int], Generator[None, None, bytes]], -) -> Generator[None, None, bytes]: - """ - Parse a single line. - - CRLF is stripped from the return value. - - Args: - read_line: generator-based coroutine that reads a LF-terminated line - or raises an exception if there isn't enough data. - - Raises: - EOFError: if the connection is closed without a CRLF. - SecurityError: if the response exceeds a security limit. - - """ - try: - line = yield from read_line(MAX_LINE) - except RuntimeError: - raise exceptions.SecurityError("line too long") - # Not mandatory but safe - https://www.rfc-editor.org/rfc/rfc7230.html#section-3.5 - if not line.endswith(b"\r\n"): - raise EOFError("line without CRLF") - return line[:-2] diff --git a/venv/lib/python3.11/site-packages/websockets/imports.py b/venv/lib/python3.11/site-packages/websockets/imports.py deleted file mode 100644 index a6a59d4..0000000 --- a/venv/lib/python3.11/site-packages/websockets/imports.py +++ /dev/null @@ -1,99 +0,0 @@ -from __future__ import annotations - -import warnings -from typing import Any, Dict, Iterable, Optional - - -__all__ = ["lazy_import"] - - -def import_name(name: str, source: str, namespace: Dict[str, Any]) -> Any: - """ - Import ``name`` from ``source`` in ``namespace``. - - There are two use cases: - - - ``name`` is an object defined in ``source``; - - ``name`` is a submodule of ``source``. - - Neither :func:`__import__` nor :func:`~importlib.import_module` does - exactly this. :func:`__import__` is closer to the intended behavior. - - """ - level = 0 - while source[level] == ".": - level += 1 - assert level < len(source), "importing from parent isn't supported" - module = __import__(source[level:], namespace, None, [name], level) - return getattr(module, name) - - -def lazy_import( - namespace: Dict[str, Any], - aliases: Optional[Dict[str, str]] = None, - deprecated_aliases: Optional[Dict[str, str]] = None, -) -> None: - """ - Provide lazy, module-level imports. - - Typical use:: - - __getattr__, __dir__ = lazy_import( - globals(), - aliases={ - "<name>": "<source module>", - ... - }, - deprecated_aliases={ - ..., - } - ) - - This function defines ``__getattr__`` and ``__dir__`` per :pep:`562`. - - """ - if aliases is None: - aliases = {} - if deprecated_aliases is None: - deprecated_aliases = {} - - namespace_set = set(namespace) - aliases_set = set(aliases) - deprecated_aliases_set = set(deprecated_aliases) - - assert not namespace_set & aliases_set, "namespace conflict" - assert not namespace_set & deprecated_aliases_set, "namespace conflict" - assert not aliases_set & deprecated_aliases_set, "namespace conflict" - - package = namespace["__name__"] - - def __getattr__(name: str) -> Any: - assert aliases is not None # mypy cannot figure this out - try: - source = aliases[name] - except KeyError: - pass - else: - return import_name(name, source, namespace) - - assert deprecated_aliases is not None # mypy cannot figure this out - try: - source = deprecated_aliases[name] - except KeyError: - pass - else: - warnings.warn( - f"{package}.{name} is deprecated", - DeprecationWarning, - stacklevel=2, - ) - return import_name(name, source, namespace) - - raise AttributeError(f"module {package!r} has no attribute {name!r}") - - namespace["__getattr__"] = __getattr__ - - def __dir__() -> Iterable[str]: - return sorted(namespace_set | 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a/venv/lib/python3.11/site-packages/websockets/legacy/__pycache__/server.cpython-311.pyc +++ /dev/null diff --git a/venv/lib/python3.11/site-packages/websockets/legacy/async_timeout.py b/venv/lib/python3.11/site-packages/websockets/legacy/async_timeout.py deleted file mode 100644 index 8264094..0000000 --- a/venv/lib/python3.11/site-packages/websockets/legacy/async_timeout.py +++ /dev/null @@ -1,265 +0,0 @@ -# From https://github.com/aio-libs/async-timeout/blob/master/async_timeout/__init__.py -# Licensed under the Apache License (Apache-2.0) - -import asyncio -import enum -import sys -import warnings -from types import TracebackType -from typing import Optional, Type - - -# From https://github.com/python/typing_extensions/blob/main/src/typing_extensions.py -# Licensed under the Python Software Foundation License (PSF-2.0) - -if sys.version_info >= (3, 11): - from typing import final -else: - # @final exists in 3.8+, but we backport it for all versions - # before 3.11 to keep support for the __final__ attribute. - # See https://bugs.python.org/issue46342 - def final(f): - """This decorator can be used to indicate to type checkers that - the decorated method cannot be overridden, and decorated class - cannot be subclassed. For example: - - class Base: - @final - def done(self) -> None: - ... - class Sub(Base): - def done(self) -> None: # Error reported by type checker - ... - @final - class Leaf: - ... - class Other(Leaf): # Error reported by type checker - ... - - There is no runtime checking of these properties. The decorator - sets the ``__final__`` attribute to ``True`` on the decorated object - to allow runtime introspection. - """ - try: - f.__final__ = True - except (AttributeError, TypeError): - # Skip the attribute silently if it is not writable. - # AttributeError happens if the object has __slots__ or a - # read-only property, TypeError if it's a builtin class. - pass - return f - - -# End https://github.com/aio-libs/async-timeout/blob/master/async_timeout/__init__.py - -__version__ = "4.0.2" - - -__all__ = ("timeout", "timeout_at", "Timeout") - - -def timeout(delay: Optional[float]) -> "Timeout": - """timeout context manager. - - Useful in cases when you want to apply timeout logic around block - of code or in cases when asyncio.wait_for is not suitable. For example: - - >>> async with timeout(0.001): - ... async with aiohttp.get('https://github.com') as r: - ... await r.text() - - - delay - value in seconds or None to disable timeout logic - """ - loop = asyncio.get_running_loop() - if delay is not None: - deadline = loop.time() + delay # type: Optional[float] - else: - deadline = None - return Timeout(deadline, loop) - - -def timeout_at(deadline: Optional[float]) -> "Timeout": - """Schedule the timeout at absolute time. - - deadline argument points on the time in the same clock system - as loop.time(). - - Please note: it is not POSIX time but a time with - undefined starting base, e.g. the time of the system power on. - - >>> async with timeout_at(loop.time() + 10): - ... async with aiohttp.get('https://github.com') as r: - ... await r.text() - - - """ - loop = asyncio.get_running_loop() - return Timeout(deadline, loop) - - -class _State(enum.Enum): - INIT = "INIT" - ENTER = "ENTER" - TIMEOUT = "TIMEOUT" - EXIT = "EXIT" - - -@final -class Timeout: - # Internal class, please don't instantiate it directly - # Use timeout() and timeout_at() public factories instead. - # - # Implementation note: `async with timeout()` is preferred - # over `with timeout()`. - # While technically the Timeout class implementation - # doesn't need to be async at all, - # the `async with` statement explicitly points that - # the context manager should be used from async function context. - # - # This design allows to avoid many silly misusages. - # - # TimeoutError is raised immediately when scheduled - # if the deadline is passed. - # The purpose is to time out as soon as possible - # without waiting for the next await expression. - - __slots__ = ("_deadline", "_loop", "_state", "_timeout_handler") - - def __init__( - self, deadline: Optional[float], loop: asyncio.AbstractEventLoop - ) -> None: - self._loop = loop - self._state = _State.INIT - - self._timeout_handler = None # type: Optional[asyncio.Handle] - if deadline is None: - self._deadline = None # type: Optional[float] - else: - self.update(deadline) - - def __enter__(self) -> "Timeout": - warnings.warn( - "with timeout() is deprecated, use async with timeout() instead", - DeprecationWarning, - stacklevel=2, - ) - self._do_enter() - return self - - def __exit__( - self, - exc_type: Optional[Type[BaseException]], - exc_val: Optional[BaseException], - exc_tb: Optional[TracebackType], - ) -> Optional[bool]: - self._do_exit(exc_type) - return None - - async def __aenter__(self) -> "Timeout": - self._do_enter() - return self - - async def __aexit__( - self, - exc_type: Optional[Type[BaseException]], - exc_val: Optional[BaseException], - exc_tb: Optional[TracebackType], - ) -> Optional[bool]: - self._do_exit(exc_type) - return None - - @property - def expired(self) -> bool: - """Is timeout expired during execution?""" - return self._state == _State.TIMEOUT - - @property - def deadline(self) -> Optional[float]: - return self._deadline - - def reject(self) -> None: - """Reject scheduled timeout if any.""" - # cancel is maybe better name but - # task.cancel() raises CancelledError in asyncio world. - if self._state not in (_State.INIT, _State.ENTER): - raise RuntimeError(f"invalid state {self._state.value}") - self._reject() - - def _reject(self) -> None: - if self._timeout_handler is not None: - self._timeout_handler.cancel() - self._timeout_handler = None - - def shift(self, delay: float) -> None: - """Advance timeout on delay seconds. - - The delay can be negative. - - Raise RuntimeError if shift is called when deadline is not scheduled - """ - deadline = self._deadline - if deadline is None: - raise RuntimeError("cannot shift timeout if deadline is not scheduled") - self.update(deadline + delay) - - def update(self, deadline: float) -> None: - """Set deadline to absolute value. - - deadline argument points on the time in the same clock system - as loop.time(). - - If new deadline is in the past the timeout is raised immediately. - - Please note: it is not POSIX time but a time with - undefined starting base, e.g. the time of the system power on. - """ - if self._state == _State.EXIT: - raise RuntimeError("cannot reschedule after exit from context manager") - if self._state == _State.TIMEOUT: - raise RuntimeError("cannot reschedule expired timeout") - if self._timeout_handler is not None: - self._timeout_handler.cancel() - self._deadline = deadline - if self._state != _State.INIT: - self._reschedule() - - def _reschedule(self) -> None: - assert self._state == _State.ENTER - deadline = self._deadline - if deadline is None: - return - - now = self._loop.time() - if self._timeout_handler is not None: - self._timeout_handler.cancel() - - task = asyncio.current_task() - if deadline <= now: - self._timeout_handler = self._loop.call_soon(self._on_timeout, task) - else: - self._timeout_handler = self._loop.call_at(deadline, self._on_timeout, task) - - def _do_enter(self) -> None: - if self._state != _State.INIT: - raise RuntimeError(f"invalid state {self._state.value}") - self._state = _State.ENTER - self._reschedule() - - def _do_exit(self, exc_type: Optional[Type[BaseException]]) -> None: - if exc_type is asyncio.CancelledError and self._state == _State.TIMEOUT: - self._timeout_handler = None - raise asyncio.TimeoutError - # timeout has not expired - self._state = _State.EXIT - self._reject() - return None - - def _on_timeout(self, task: "asyncio.Task[None]") -> None: - task.cancel() - self._state = _State.TIMEOUT - # drop the reference early - self._timeout_handler = None - - -# End https://github.com/aio-libs/async-timeout/blob/master/async_timeout/__init__.py diff --git a/venv/lib/python3.11/site-packages/websockets/legacy/auth.py b/venv/lib/python3.11/site-packages/websockets/legacy/auth.py deleted file mode 100644 index d342583..0000000 --- a/venv/lib/python3.11/site-packages/websockets/legacy/auth.py +++ /dev/null @@ -1,184 +0,0 @@ -from __future__ import annotations - -import functools -import hmac -import http -from typing import Any, Awaitable, Callable, Iterable, Optional, Tuple, Union, cast - -from ..datastructures import Headers -from ..exceptions import InvalidHeader -from ..headers import build_www_authenticate_basic, parse_authorization_basic -from .server import HTTPResponse, WebSocketServerProtocol - - -__all__ = ["BasicAuthWebSocketServerProtocol", "basic_auth_protocol_factory"] - -Credentials = Tuple[str, str] - - -def is_credentials(value: Any) -> bool: - try: - username, password = value - except (TypeError, ValueError): - return False - else: - return isinstance(username, str) and isinstance(password, str) - - -class BasicAuthWebSocketServerProtocol(WebSocketServerProtocol): - """ - WebSocket server protocol that enforces HTTP Basic Auth. - - """ - - realm: str = "" - """ - Scope of protection. - - If provided, it should contain only ASCII characters because the - encoding of non-ASCII characters is undefined. - """ - - username: Optional[str] = None - """Username of the authenticated user.""" - - def __init__( - self, - *args: Any, - realm: Optional[str] = None, - check_credentials: Optional[Callable[[str, str], Awaitable[bool]]] = None, - **kwargs: Any, - ) -> None: - if realm is not None: - self.realm = realm # shadow class attribute - self._check_credentials = check_credentials - super().__init__(*args, **kwargs) - - async def check_credentials(self, username: str, password: str) -> bool: - """ - Check whether credentials are authorized. - - This coroutine may be overridden in a subclass, for example to - authenticate against a database or an external service. - - Args: - username: HTTP Basic Auth username. - password: HTTP Basic Auth password. - - Returns: - bool: :obj:`True` if the handshake should continue; - :obj:`False` if it should fail with an HTTP 401 error. - - """ - if self._check_credentials is not None: - return await self._check_credentials(username, password) - - return False - - async def process_request( - self, - path: str, - request_headers: Headers, - ) -> Optional[HTTPResponse]: - """ - Check HTTP Basic Auth and return an HTTP 401 response if needed. - - """ - try: - authorization = request_headers["Authorization"] - except KeyError: - return ( - http.HTTPStatus.UNAUTHORIZED, - [("WWW-Authenticate", build_www_authenticate_basic(self.realm))], - b"Missing credentials\n", - ) - - try: - username, password = parse_authorization_basic(authorization) - except InvalidHeader: - return ( - http.HTTPStatus.UNAUTHORIZED, - [("WWW-Authenticate", build_www_authenticate_basic(self.realm))], - b"Unsupported credentials\n", - ) - - if not await self.check_credentials(username, password): - return ( - http.HTTPStatus.UNAUTHORIZED, - [("WWW-Authenticate", build_www_authenticate_basic(self.realm))], - b"Invalid credentials\n", - ) - - self.username = username - - return await super().process_request(path, request_headers) - - -def basic_auth_protocol_factory( - realm: Optional[str] = None, - credentials: Optional[Union[Credentials, Iterable[Credentials]]] = None, - check_credentials: Optional[Callable[[str, str], Awaitable[bool]]] = None, - create_protocol: Optional[Callable[..., BasicAuthWebSocketServerProtocol]] = None, -) -> Callable[..., BasicAuthWebSocketServerProtocol]: - """ - Protocol factory that enforces HTTP Basic Auth. - - :func:`basic_auth_protocol_factory` is designed to integrate with - :func:`~websockets.server.serve` like this:: - - websockets.serve( - ..., - create_protocol=websockets.basic_auth_protocol_factory( - realm="my dev server", - credentials=("hello", "iloveyou"), - ) - ) - - Args: - realm: Scope of protection. It should contain only ASCII characters - because the encoding of non-ASCII characters is undefined. - Refer to section 2.2 of :rfc:`7235` for details. - credentials: Hard coded authorized credentials. It can be a - ``(username, password)`` pair or a list of such pairs. - check_credentials: Coroutine that verifies credentials. - It receives ``username`` and ``password`` arguments - and returns a :class:`bool`. One of ``credentials`` or - ``check_credentials`` must be provided but not both. - create_protocol: Factory that creates the protocol. By default, this - is :class:`BasicAuthWebSocketServerProtocol`. It can be replaced - by a subclass. - Raises: - TypeError: If the ``credentials`` or ``check_credentials`` argument is - wrong. - - """ - if (credentials is None) == (check_credentials is None): - raise TypeError("provide either credentials or check_credentials") - - if credentials is not None: - if is_credentials(credentials): - credentials_list = [cast(Credentials, credentials)] - elif isinstance(credentials, Iterable): - credentials_list = list(credentials) - if not all(is_credentials(item) for item in credentials_list): - raise TypeError(f"invalid credentials argument: {credentials}") - else: - raise TypeError(f"invalid credentials argument: {credentials}") - - credentials_dict = dict(credentials_list) - - async def check_credentials(username: str, password: str) -> bool: - try: - expected_password = credentials_dict[username] - except KeyError: - return False - return hmac.compare_digest(expected_password, password) - - if create_protocol is None: - create_protocol = BasicAuthWebSocketServerProtocol - - return functools.partial( - create_protocol, - realm=realm, - check_credentials=check_credentials, - ) diff --git a/venv/lib/python3.11/site-packages/websockets/legacy/client.py b/venv/lib/python3.11/site-packages/websockets/legacy/client.py deleted file mode 100644 index 4862252..0000000 --- a/venv/lib/python3.11/site-packages/websockets/legacy/client.py +++ /dev/null @@ -1,705 +0,0 @@ -from __future__ import annotations - -import asyncio -import functools -import logging -import random -import urllib.parse -import warnings -from types import TracebackType -from typing import ( - Any, - AsyncIterator, - Callable, - Generator, - List, - Optional, - Sequence, - Tuple, - Type, - cast, -) - -from ..datastructures import Headers, HeadersLike -from ..exceptions import ( - InvalidHandshake, - InvalidHeader, - InvalidMessage, - InvalidStatusCode, - NegotiationError, - RedirectHandshake, - SecurityError, -) -from ..extensions import ClientExtensionFactory, Extension -from ..extensions.permessage_deflate import enable_client_permessage_deflate -from ..headers import ( - build_authorization_basic, - build_extension, - build_host, - build_subprotocol, - parse_extension, - parse_subprotocol, - validate_subprotocols, -) -from ..http import USER_AGENT -from ..typing import ExtensionHeader, LoggerLike, Origin, Subprotocol -from ..uri import WebSocketURI, parse_uri -from .compatibility import asyncio_timeout -from .handshake import build_request, check_response -from .http import read_response -from .protocol import WebSocketCommonProtocol - - -__all__ = ["connect", "unix_connect", "WebSocketClientProtocol"] - - -class WebSocketClientProtocol(WebSocketCommonProtocol): - """ - WebSocket client connection. - - :class:`WebSocketClientProtocol` provides :meth:`recv` and :meth:`send` - coroutines for receiving and sending messages. - - It supports asynchronous iteration to receive incoming messages:: - - async for message in websocket: - await process(message) - - The iterator exits normally when the connection is closed with close code - 1000 (OK) or 1001 (going away) or without a close code. It raises - a :exc:`~websockets.exceptions.ConnectionClosedError` when the connection - is closed with any other code. - - See :func:`connect` for the documentation of ``logger``, ``origin``, - ``extensions``, ``subprotocols``, ``extra_headers``, and - ``user_agent_header``. - - See :class:`~websockets.legacy.protocol.WebSocketCommonProtocol` for the - documentation of ``ping_interval``, ``ping_timeout``, ``close_timeout``, - ``max_size``, ``max_queue``, ``read_limit``, and ``write_limit``. - - """ - - is_client = True - side = "client" - - def __init__( - self, - *, - logger: Optional[LoggerLike] = None, - origin: Optional[Origin] = None, - extensions: Optional[Sequence[ClientExtensionFactory]] = None, - subprotocols: Optional[Sequence[Subprotocol]] = None, - extra_headers: Optional[HeadersLike] = None, - user_agent_header: Optional[str] = USER_AGENT, - **kwargs: Any, - ) -> None: - if logger is None: - logger = logging.getLogger("websockets.client") - super().__init__(logger=logger, **kwargs) - self.origin = origin - self.available_extensions = extensions - self.available_subprotocols = subprotocols - self.extra_headers = extra_headers - self.user_agent_header = user_agent_header - - def write_http_request(self, path: str, headers: Headers) -> None: - """ - Write request line and headers to the HTTP request. - - """ - self.path = path - self.request_headers = headers - - if self.debug: - self.logger.debug("> GET %s HTTP/1.1", path) - for key, value in headers.raw_items(): - self.logger.debug("> %s: %s", key, value) - - # Since the path and headers only contain ASCII characters, - # we can keep this simple. - request = f"GET {path} HTTP/1.1\r\n" - request += str(headers) - - self.transport.write(request.encode()) - - async def read_http_response(self) -> Tuple[int, Headers]: - """ - Read status line and headers from the HTTP response. - - If the response contains a body, it may be read from ``self.reader`` - after this coroutine returns. - - Raises: - InvalidMessage: If the HTTP message is malformed or isn't an - HTTP/1.1 GET response. - - """ - try: - status_code, reason, headers = await read_response(self.reader) - except Exception as exc: - raise InvalidMessage("did not receive a valid HTTP response") from exc - - if self.debug: - self.logger.debug("< HTTP/1.1 %d %s", status_code, reason) - for key, value in headers.raw_items(): - self.logger.debug("< %s: %s", key, value) - - self.response_headers = headers - - return status_code, self.response_headers - - @staticmethod - def process_extensions( - headers: Headers, - available_extensions: Optional[Sequence[ClientExtensionFactory]], - ) -> List[Extension]: - """ - Handle the Sec-WebSocket-Extensions HTTP response header. - - Check that each extension is supported, as well as its parameters. - - Return the list of accepted extensions. - - Raise :exc:`~websockets.exceptions.InvalidHandshake` to abort the - connection. - - :rfc:`6455` leaves the rules up to the specification of each - :extension. - - To provide this level of flexibility, for each extension accepted by - the server, we check for a match with each extension available in the - client configuration. If no match is found, an exception is raised. - - If several variants of the same extension are accepted by the server, - it may be configured several times, which won't make sense in general. - Extensions must implement their own requirements. For this purpose, - the list of previously accepted extensions is provided. - - Other requirements, for example related to mandatory extensions or the - order of extensions, may be implemented by overriding this method. - - """ - accepted_extensions: List[Extension] = [] - - header_values = headers.get_all("Sec-WebSocket-Extensions") - - if header_values: - if available_extensions is None: - raise InvalidHandshake("no extensions supported") - - parsed_header_values: List[ExtensionHeader] = sum( - [parse_extension(header_value) for header_value in header_values], [] - ) - - for name, response_params in parsed_header_values: - for extension_factory in available_extensions: - # Skip non-matching extensions based on their name. - if extension_factory.name != name: - continue - - # Skip non-matching extensions based on their params. - try: - extension = extension_factory.process_response_params( - response_params, accepted_extensions - ) - except NegotiationError: - continue - - # Add matching extension to the final list. - accepted_extensions.append(extension) - - # Break out of the loop once we have a match. - break - - # If we didn't break from the loop, no extension in our list - # matched what the server sent. Fail the connection. - else: - raise NegotiationError( - f"Unsupported extension: " - f"name = {name}, params = {response_params}" - ) - - return accepted_extensions - - @staticmethod - def process_subprotocol( - headers: Headers, available_subprotocols: Optional[Sequence[Subprotocol]] - ) -> Optional[Subprotocol]: - """ - Handle the Sec-WebSocket-Protocol HTTP response header. - - Check that it contains exactly one supported subprotocol. - - Return the selected subprotocol. - - """ - subprotocol: Optional[Subprotocol] = None - - header_values = headers.get_all("Sec-WebSocket-Protocol") - - if header_values: - if available_subprotocols is None: - raise InvalidHandshake("no subprotocols supported") - - parsed_header_values: Sequence[Subprotocol] = sum( - [parse_subprotocol(header_value) for header_value in header_values], [] - ) - - if len(parsed_header_values) > 1: - subprotocols = ", ".join(parsed_header_values) - raise InvalidHandshake(f"multiple subprotocols: {subprotocols}") - - subprotocol = parsed_header_values[0] - - if subprotocol not in available_subprotocols: - raise NegotiationError(f"unsupported subprotocol: {subprotocol}") - - return subprotocol - - async def handshake( - self, - wsuri: WebSocketURI, - origin: Optional[Origin] = None, - available_extensions: Optional[Sequence[ClientExtensionFactory]] = None, - available_subprotocols: Optional[Sequence[Subprotocol]] = None, - extra_headers: Optional[HeadersLike] = None, - ) -> None: - """ - Perform the client side of the opening handshake. - - Args: - wsuri: URI of the WebSocket server. - origin: Value of the ``Origin`` header. - extensions: List of supported extensions, in order in which they - should be negotiated and run. - subprotocols: List of supported subprotocols, in order of decreasing - preference. - extra_headers: Arbitrary HTTP headers to add to the handshake request. - - Raises: - InvalidHandshake: If the handshake fails. - - """ - request_headers = Headers() - - request_headers["Host"] = build_host(wsuri.host, wsuri.port, wsuri.secure) - - if wsuri.user_info: - request_headers["Authorization"] = build_authorization_basic( - *wsuri.user_info - ) - - if origin is not None: - request_headers["Origin"] = origin - - key = build_request(request_headers) - - if available_extensions is not None: - extensions_header = build_extension( - [ - (extension_factory.name, extension_factory.get_request_params()) - for extension_factory in available_extensions - ] - ) - request_headers["Sec-WebSocket-Extensions"] = extensions_header - - if available_subprotocols is not None: - protocol_header = build_subprotocol(available_subprotocols) - request_headers["Sec-WebSocket-Protocol"] = protocol_header - - if self.extra_headers is not None: - request_headers.update(self.extra_headers) - - if self.user_agent_header is not None: - request_headers.setdefault("User-Agent", self.user_agent_header) - - self.write_http_request(wsuri.resource_name, request_headers) - - status_code, response_headers = await self.read_http_response() - if status_code in (301, 302, 303, 307, 308): - if "Location" not in response_headers: - raise InvalidHeader("Location") - raise RedirectHandshake(response_headers["Location"]) - elif status_code != 101: - raise InvalidStatusCode(status_code, response_headers) - - check_response(response_headers, key) - - self.extensions = self.process_extensions( - response_headers, available_extensions - ) - - self.subprotocol = self.process_subprotocol( - response_headers, available_subprotocols - ) - - self.connection_open() - - -class Connect: - """ - Connect to the WebSocket server at ``uri``. - - Awaiting :func:`connect` yields a :class:`WebSocketClientProtocol` which - can then be used to send and receive messages. - - :func:`connect` can be used as a asynchronous context manager:: - - async with websockets.connect(...) as websocket: - ... - - The connection is closed automatically when exiting the context. - - :func:`connect` can be used as an infinite asynchronous iterator to - reconnect automatically on errors:: - - async for websocket in websockets.connect(...): - try: - ... - except websockets.ConnectionClosed: - continue - - The connection is closed automatically after each iteration of the loop. - - If an error occurs while establishing the connection, :func:`connect` - retries with exponential backoff. The backoff delay starts at three - seconds and increases up to one minute. - - If an error occurs in the body of the loop, you can handle the exception - and :func:`connect` will reconnect with the next iteration; or you can - let the exception bubble up and break out of the loop. This lets you - decide which errors trigger a reconnection and which errors are fatal. - - Args: - uri: URI of the WebSocket server. - create_protocol: Factory for the :class:`asyncio.Protocol` managing - the connection. It defaults to :class:`WebSocketClientProtocol`. - Set it to a wrapper or a subclass to customize connection handling. - logger: Logger for this client. - It defaults to ``logging.getLogger("websockets.client")``. - See the :doc:`logging guide <../../topics/logging>` for details. - compression: The "permessage-deflate" extension is enabled by default. - Set ``compression`` to :obj:`None` to disable it. See the - :doc:`compression guide <../../topics/compression>` for details. - origin: Value of the ``Origin`` header, for servers that require it. - extensions: List of supported extensions, in order in which they - should be negotiated and run. - subprotocols: List of supported subprotocols, in order of decreasing - preference. - extra_headers: Arbitrary HTTP headers to add to the handshake request. - user_agent_header: Value of the ``User-Agent`` request header. - It defaults to ``"Python/x.y.z websockets/X.Y"``. - Setting it to :obj:`None` removes the header. - open_timeout: Timeout for opening the connection in seconds. - :obj:`None` disables the timeout. - - See :class:`~websockets.legacy.protocol.WebSocketCommonProtocol` for the - documentation of ``ping_interval``, ``ping_timeout``, ``close_timeout``, - ``max_size``, ``max_queue``, ``read_limit``, and ``write_limit``. - - Any other keyword arguments are passed the event loop's - :meth:`~asyncio.loop.create_connection` method. - - For example: - - * You can set ``ssl`` to a :class:`~ssl.SSLContext` to enforce TLS - settings. When connecting to a ``wss://`` URI, if ``ssl`` isn't - provided, a TLS context is created - with :func:`~ssl.create_default_context`. - - * You can set ``host`` and ``port`` to connect to a different host and - port from those found in ``uri``. This only changes the destination of - the TCP connection. The host name from ``uri`` is still used in the TLS - handshake for secure connections and in the ``Host`` header. - - Raises: - InvalidURI: If ``uri`` isn't a valid WebSocket URI. - OSError: If the TCP connection fails. - InvalidHandshake: If the opening handshake fails. - ~asyncio.TimeoutError: If the opening handshake times out. - - """ - - MAX_REDIRECTS_ALLOWED = 10 - - def __init__( - self, - uri: str, - *, - create_protocol: Optional[Callable[..., WebSocketClientProtocol]] = None, - logger: Optional[LoggerLike] = None, - compression: Optional[str] = "deflate", - origin: Optional[Origin] = None, - extensions: Optional[Sequence[ClientExtensionFactory]] = None, - subprotocols: Optional[Sequence[Subprotocol]] = None, - extra_headers: Optional[HeadersLike] = None, - user_agent_header: Optional[str] = USER_AGENT, - open_timeout: Optional[float] = 10, - ping_interval: Optional[float] = 20, - ping_timeout: Optional[float] = 20, - close_timeout: Optional[float] = None, - max_size: Optional[int] = 2**20, - max_queue: Optional[int] = 2**5, - read_limit: int = 2**16, - write_limit: int = 2**16, - **kwargs: Any, - ) -> None: - # Backwards compatibility: close_timeout used to be called timeout. - timeout: Optional[float] = kwargs.pop("timeout", None) - if timeout is None: - timeout = 10 - else: - warnings.warn("rename timeout to close_timeout", DeprecationWarning) - # If both are specified, timeout is ignored. - if close_timeout is None: - close_timeout = timeout - - # Backwards compatibility: create_protocol used to be called klass. - klass: Optional[Type[WebSocketClientProtocol]] = kwargs.pop("klass", None) - if klass is None: - klass = WebSocketClientProtocol - else: - warnings.warn("rename klass to create_protocol", DeprecationWarning) - # If both are specified, klass is ignored. - if create_protocol is None: - create_protocol = klass - - # Backwards compatibility: recv() used to return None on closed connections - legacy_recv: bool = kwargs.pop("legacy_recv", False) - - # Backwards compatibility: the loop parameter used to be supported. - _loop: Optional[asyncio.AbstractEventLoop] = kwargs.pop("loop", None) - if _loop is None: - loop = asyncio.get_event_loop() - else: - loop = _loop - warnings.warn("remove loop argument", DeprecationWarning) - - wsuri = parse_uri(uri) - if wsuri.secure: - kwargs.setdefault("ssl", True) - elif kwargs.get("ssl") is not None: - raise ValueError( - "connect() received a ssl argument for a ws:// URI, " - "use a wss:// URI to enable TLS" - ) - - if compression == "deflate": - extensions = enable_client_permessage_deflate(extensions) - elif compression is not None: - raise ValueError(f"unsupported compression: {compression}") - - if subprotocols is not None: - validate_subprotocols(subprotocols) - - factory = functools.partial( - create_protocol, - logger=logger, - origin=origin, - extensions=extensions, - subprotocols=subprotocols, - extra_headers=extra_headers, - user_agent_header=user_agent_header, - ping_interval=ping_interval, - ping_timeout=ping_timeout, - close_timeout=close_timeout, - max_size=max_size, - max_queue=max_queue, - read_limit=read_limit, - write_limit=write_limit, - host=wsuri.host, - port=wsuri.port, - secure=wsuri.secure, - legacy_recv=legacy_recv, - loop=_loop, - ) - - if kwargs.pop("unix", False): - path: Optional[str] = kwargs.pop("path", None) - create_connection = functools.partial( - loop.create_unix_connection, factory, path, **kwargs - ) - else: - host: Optional[str] - port: Optional[int] - if kwargs.get("sock") is None: - host, port = wsuri.host, wsuri.port - else: - # If sock is given, host and port shouldn't be specified. - host, port = None, None - if kwargs.get("ssl"): - kwargs.setdefault("server_hostname", wsuri.host) - # If host and port are given, override values from the URI. - host = kwargs.pop("host", host) - port = kwargs.pop("port", port) - create_connection = functools.partial( - loop.create_connection, factory, host, port, **kwargs - ) - - self.open_timeout = open_timeout - if logger is None: - logger = logging.getLogger("websockets.client") - self.logger = logger - - # This is a coroutine function. - self._create_connection = create_connection - self._uri = uri - self._wsuri = wsuri - - def handle_redirect(self, uri: str) -> None: - # Update the state of this instance to connect to a new URI. - old_uri = self._uri - old_wsuri = self._wsuri - new_uri = urllib.parse.urljoin(old_uri, uri) - new_wsuri = parse_uri(new_uri) - - # Forbid TLS downgrade. - if old_wsuri.secure and not new_wsuri.secure: - raise SecurityError("redirect from WSS to WS") - - same_origin = ( - old_wsuri.host == new_wsuri.host and old_wsuri.port == new_wsuri.port - ) - - # Rewrite the host and port arguments for cross-origin redirects. - # This preserves connection overrides with the host and port - # arguments if the redirect points to the same host and port. - if not same_origin: - # Replace the host and port argument passed to the protocol factory. - factory = self._create_connection.args[0] - factory = functools.partial( - factory.func, - *factory.args, - **dict(factory.keywords, host=new_wsuri.host, port=new_wsuri.port), - ) - # Replace the host and port argument passed to create_connection. - self._create_connection = functools.partial( - self._create_connection.func, - *(factory, new_wsuri.host, new_wsuri.port), - **self._create_connection.keywords, - ) - - # Set the new WebSocket URI. This suffices for same-origin redirects. - self._uri = new_uri - self._wsuri = new_wsuri - - # async for ... in connect(...): - - BACKOFF_MIN = 1.92 - BACKOFF_MAX = 60.0 - BACKOFF_FACTOR = 1.618 - BACKOFF_INITIAL = 5 - - async def __aiter__(self) -> AsyncIterator[WebSocketClientProtocol]: - backoff_delay = self.BACKOFF_MIN - while True: - try: - async with self as protocol: - yield protocol - except Exception: - # Add a random initial delay between 0 and 5 seconds. - # See 7.2.3. Recovering from Abnormal Closure in RFC 6544. - if backoff_delay == self.BACKOFF_MIN: - initial_delay = random.random() * self.BACKOFF_INITIAL - self.logger.info( - "! connect failed; reconnecting in %.1f seconds", - initial_delay, - exc_info=True, - ) - await asyncio.sleep(initial_delay) - else: - self.logger.info( - "! connect failed again; retrying in %d seconds", - int(backoff_delay), - exc_info=True, - ) - await asyncio.sleep(int(backoff_delay)) - # Increase delay with truncated exponential backoff. - backoff_delay = backoff_delay * self.BACKOFF_FACTOR - backoff_delay = min(backoff_delay, self.BACKOFF_MAX) - continue - else: - # Connection succeeded - reset backoff delay - backoff_delay = self.BACKOFF_MIN - - # async with connect(...) as ...: - - async def __aenter__(self) -> WebSocketClientProtocol: - return await self - - async def __aexit__( - self, - exc_type: Optional[Type[BaseException]], - exc_value: Optional[BaseException], - traceback: Optional[TracebackType], - ) -> None: - await self.protocol.close() - - # ... = await connect(...) - - def __await__(self) -> Generator[Any, None, WebSocketClientProtocol]: - # Create a suitable iterator by calling __await__ on a coroutine. - return self.__await_impl_timeout__().__await__() - - async def __await_impl_timeout__(self) -> WebSocketClientProtocol: - async with asyncio_timeout(self.open_timeout): - return await self.__await_impl__() - - async def __await_impl__(self) -> WebSocketClientProtocol: - for redirects in range(self.MAX_REDIRECTS_ALLOWED): - _transport, _protocol = await self._create_connection() - protocol = cast(WebSocketClientProtocol, _protocol) - try: - await protocol.handshake( - self._wsuri, - origin=protocol.origin, - available_extensions=protocol.available_extensions, - available_subprotocols=protocol.available_subprotocols, - extra_headers=protocol.extra_headers, - ) - except RedirectHandshake as exc: - protocol.fail_connection() - await protocol.wait_closed() - self.handle_redirect(exc.uri) - # Avoid leaking a connected socket when the handshake fails. - except (Exception, asyncio.CancelledError): - protocol.fail_connection() - await protocol.wait_closed() - raise - else: - self.protocol = protocol - return protocol - else: - raise SecurityError("too many redirects") - - # ... = yield from connect(...) - remove when dropping Python < 3.10 - - __iter__ = __await__ - - -connect = Connect - - -def unix_connect( - path: Optional[str] = None, - uri: str = "ws://localhost/", - **kwargs: Any, -) -> Connect: - """ - Similar to :func:`connect`, but for connecting to a Unix socket. - - This function builds upon the event loop's - :meth:`~asyncio.loop.create_unix_connection` method. - - It is only available on Unix. - - It's mainly useful for debugging servers listening on Unix sockets. - - Args: - path: File system path to the Unix socket. - uri: URI of the WebSocket server; the host is used in the TLS - handshake for secure connections and in the ``Host`` header. - - """ - return connect(uri=uri, path=path, unix=True, **kwargs) diff --git a/venv/lib/python3.11/site-packages/websockets/legacy/compatibility.py b/venv/lib/python3.11/site-packages/websockets/legacy/compatibility.py deleted file mode 100644 index 6bd01e7..0000000 --- a/venv/lib/python3.11/site-packages/websockets/legacy/compatibility.py +++ /dev/null @@ -1,12 +0,0 @@ -from __future__ import annotations - -import sys - - -__all__ = ["asyncio_timeout"] - - -if sys.version_info[:2] >= (3, 11): - from asyncio import timeout as asyncio_timeout # noqa: F401 -else: - from .async_timeout import timeout as asyncio_timeout # noqa: F401 diff --git a/venv/lib/python3.11/site-packages/websockets/legacy/framing.py b/venv/lib/python3.11/site-packages/websockets/legacy/framing.py deleted file mode 100644 index b77b869..0000000 --- a/venv/lib/python3.11/site-packages/websockets/legacy/framing.py +++ /dev/null @@ -1,176 +0,0 @@ -from __future__ import annotations - -import struct -from typing import Any, Awaitable, Callable, NamedTuple, Optional, Sequence, Tuple - -from .. import extensions, frames -from ..exceptions import PayloadTooBig, ProtocolError - - -try: - from ..speedups import apply_mask -except ImportError: - from ..utils import apply_mask - - -class Frame(NamedTuple): - fin: bool - opcode: frames.Opcode - data: bytes - rsv1: bool = False - rsv2: bool = False - rsv3: bool = False - - @property - def new_frame(self) -> frames.Frame: - return frames.Frame( - self.opcode, - self.data, - self.fin, - self.rsv1, - self.rsv2, - self.rsv3, - ) - - def __str__(self) -> str: - return str(self.new_frame) - - def check(self) -> None: - return self.new_frame.check() - - @classmethod - async def read( - cls, - reader: Callable[[int], Awaitable[bytes]], - *, - mask: bool, - max_size: Optional[int] = None, - extensions: Optional[Sequence[extensions.Extension]] = None, - ) -> Frame: - """ - Read a WebSocket frame. - - Args: - reader: Coroutine that reads exactly the requested number of - bytes, unless the end of file is reached. - mask: Whether the frame should be masked i.e. whether the read - happens on the server side. - max_size: Maximum payload size in bytes. - extensions: List of extensions, applied in reverse order. - - Raises: - PayloadTooBig: If the frame exceeds ``max_size``. - ProtocolError: If the frame contains incorrect values. - - """ - - # Read the header. - data = await reader(2) - head1, head2 = struct.unpack("!BB", data) - - # While not Pythonic, this is marginally faster than calling bool(). - fin = True if head1 & 0b10000000 else False - rsv1 = True if head1 & 0b01000000 else False - rsv2 = True if head1 & 0b00100000 else False - rsv3 = True if head1 & 0b00010000 else False - - try: - opcode = frames.Opcode(head1 & 0b00001111) - except ValueError as exc: - raise ProtocolError("invalid opcode") from exc - - if (True if head2 & 0b10000000 else False) != mask: - raise ProtocolError("incorrect masking") - - length = head2 & 0b01111111 - if length == 126: - data = await reader(2) - (length,) = struct.unpack("!H", data) - elif length == 127: - data = await reader(8) - (length,) = struct.unpack("!Q", data) - if max_size is not None and length > max_size: - raise PayloadTooBig(f"over size limit ({length} > {max_size} bytes)") - if mask: - mask_bits = await reader(4) - - # Read the data. - data = await reader(length) - if mask: - data = apply_mask(data, mask_bits) - - new_frame = frames.Frame(opcode, data, fin, rsv1, rsv2, rsv3) - - if extensions is None: - extensions = [] - for extension in reversed(extensions): - new_frame = extension.decode(new_frame, max_size=max_size) - - new_frame.check() - - return cls( - new_frame.fin, - new_frame.opcode, - new_frame.data, - new_frame.rsv1, - new_frame.rsv2, - new_frame.rsv3, - ) - - def write( - self, - write: Callable[[bytes], Any], - *, - mask: bool, - extensions: Optional[Sequence[extensions.Extension]] = None, - ) -> None: - """ - Write a WebSocket frame. - - Args: - frame: Frame to write. - write: Function that writes bytes. - mask: Whether the frame should be masked i.e. whether the write - happens on the client side. - extensions: List of extensions, applied in order. - - Raises: - ProtocolError: If the frame contains incorrect values. - - """ - # The frame is written in a single call to write in order to prevent - # TCP fragmentation. See #68 for details. This also makes it safe to - # send frames concurrently from multiple coroutines. - write(self.new_frame.serialize(mask=mask, extensions=extensions)) - - -# Backwards compatibility with previously documented public APIs -from ..frames import ( # noqa: E402, F401, I001 - Close, - prepare_ctrl as encode_data, - prepare_data, -) - - -def parse_close(data: bytes) -> Tuple[int, str]: - """ - Parse the payload from a close frame. - - Returns: - Close code and reason. - - Raises: - ProtocolError: If data is ill-formed. - UnicodeDecodeError: If the reason isn't valid UTF-8. - - """ - close = Close.parse(data) - return close.code, close.reason - - -def serialize_close(code: int, reason: str) -> bytes: - """ - Serialize the payload for a close frame. - - """ - return Close(code, reason).serialize() diff --git a/venv/lib/python3.11/site-packages/websockets/legacy/handshake.py b/venv/lib/python3.11/site-packages/websockets/legacy/handshake.py deleted file mode 100644 index ad8faf0..0000000 --- a/venv/lib/python3.11/site-packages/websockets/legacy/handshake.py +++ /dev/null @@ -1,165 +0,0 @@ -from __future__ import annotations - -import base64 -import binascii -from typing import List - -from ..datastructures import Headers, MultipleValuesError -from ..exceptions import InvalidHeader, InvalidHeaderValue, InvalidUpgrade -from ..headers import parse_connection, parse_upgrade -from ..typing import ConnectionOption, UpgradeProtocol -from ..utils import accept_key as accept, generate_key - - -__all__ = ["build_request", "check_request", "build_response", "check_response"] - - -def build_request(headers: Headers) -> str: - """ - Build a handshake request to send to the server. - - Update request headers passed in argument. - - Args: - headers: Handshake request headers. - - Returns: - str: ``key`` that must be passed to :func:`check_response`. - - """ - key = generate_key() - headers["Upgrade"] = "websocket" - headers["Connection"] = "Upgrade" - headers["Sec-WebSocket-Key"] = key - headers["Sec-WebSocket-Version"] = "13" - return key - - -def check_request(headers: Headers) -> str: - """ - Check a handshake request received from the client. - - This function doesn't verify that the request is an HTTP/1.1 or higher GET - request and doesn't perform ``Host`` and ``Origin`` checks. These controls - are usually performed earlier in the HTTP request handling code. They're - the responsibility of the caller. - - Args: - headers: Handshake request headers. - - Returns: - str: ``key`` that must be passed to :func:`build_response`. - - Raises: - InvalidHandshake: If the handshake request is invalid. - Then, the server must return a 400 Bad Request error. - - """ - connection: List[ConnectionOption] = sum( - [parse_connection(value) for value in headers.get_all("Connection")], [] - ) - - if not any(value.lower() == "upgrade" for value in connection): - raise InvalidUpgrade("Connection", ", ".join(connection)) - - upgrade: List[UpgradeProtocol] = sum( - [parse_upgrade(value) for value in headers.get_all("Upgrade")], [] - ) - - # For compatibility with non-strict implementations, ignore case when - # checking the Upgrade header. The RFC always uses "websocket", except - # in section 11.2. (IANA registration) where it uses "WebSocket". - if not (len(upgrade) == 1 and upgrade[0].lower() == "websocket"): - raise InvalidUpgrade("Upgrade", ", ".join(upgrade)) - - try: - s_w_key = headers["Sec-WebSocket-Key"] - except KeyError as exc: - raise InvalidHeader("Sec-WebSocket-Key") from exc - except MultipleValuesError as exc: - raise InvalidHeader( - "Sec-WebSocket-Key", "more than one Sec-WebSocket-Key header found" - ) from exc - - try: - raw_key = base64.b64decode(s_w_key.encode(), validate=True) - except binascii.Error as exc: - raise InvalidHeaderValue("Sec-WebSocket-Key", s_w_key) from exc - if len(raw_key) != 16: - raise InvalidHeaderValue("Sec-WebSocket-Key", s_w_key) - - try: - s_w_version = headers["Sec-WebSocket-Version"] - except KeyError as exc: - raise InvalidHeader("Sec-WebSocket-Version") from exc - except MultipleValuesError as exc: - raise InvalidHeader( - "Sec-WebSocket-Version", "more than one Sec-WebSocket-Version header found" - ) from exc - - if s_w_version != "13": - raise InvalidHeaderValue("Sec-WebSocket-Version", s_w_version) - - return s_w_key - - -def build_response(headers: Headers, key: str) -> None: - """ - Build a handshake response to send to the client. - - Update response headers passed in argument. - - Args: - headers: Handshake response headers. - key: Returned by :func:`check_request`. - - """ - headers["Upgrade"] = "websocket" - headers["Connection"] = "Upgrade" - headers["Sec-WebSocket-Accept"] = accept(key) - - -def check_response(headers: Headers, key: str) -> None: - """ - Check a handshake response received from the server. - - This function doesn't verify that the response is an HTTP/1.1 or higher - response with a 101 status code. These controls are the responsibility of - the caller. - - Args: - headers: Handshake response headers. - key: Returned by :func:`build_request`. - - Raises: - InvalidHandshake: If the handshake response is invalid. - - """ - connection: List[ConnectionOption] = sum( - [parse_connection(value) for value in headers.get_all("Connection")], [] - ) - - if not any(value.lower() == "upgrade" for value in connection): - raise InvalidUpgrade("Connection", " ".join(connection)) - - upgrade: List[UpgradeProtocol] = sum( - [parse_upgrade(value) for value in headers.get_all("Upgrade")], [] - ) - - # For compatibility with non-strict implementations, ignore case when - # checking the Upgrade header. The RFC always uses "websocket", except - # in section 11.2. (IANA registration) where it uses "WebSocket". - if not (len(upgrade) == 1 and upgrade[0].lower() == "websocket"): - raise InvalidUpgrade("Upgrade", ", ".join(upgrade)) - - try: - s_w_accept = headers["Sec-WebSocket-Accept"] - except KeyError as exc: - raise InvalidHeader("Sec-WebSocket-Accept") from exc - except MultipleValuesError as exc: - raise InvalidHeader( - "Sec-WebSocket-Accept", "more than one Sec-WebSocket-Accept header found" - ) from exc - - if s_w_accept != accept(key): - raise InvalidHeaderValue("Sec-WebSocket-Accept", s_w_accept) diff --git a/venv/lib/python3.11/site-packages/websockets/legacy/http.py b/venv/lib/python3.11/site-packages/websockets/legacy/http.py deleted file mode 100644 index 2ac7f70..0000000 --- a/venv/lib/python3.11/site-packages/websockets/legacy/http.py +++ /dev/null @@ -1,201 +0,0 @@ -from __future__ import annotations - -import asyncio -import re -from typing import Tuple - -from ..datastructures import Headers -from ..exceptions import SecurityError - - -__all__ = ["read_request", "read_response"] - -MAX_HEADERS = 128 -MAX_LINE = 8192 - - -def d(value: bytes) -> str: - """ - Decode a bytestring for interpolating into an error message. - - """ - return value.decode(errors="backslashreplace") - - -# See https://www.rfc-editor.org/rfc/rfc7230.html#appendix-B. - -# Regex for validating header names. - -_token_re = re.compile(rb"[-!#$%&\'*+.^_`|~0-9a-zA-Z]+") - -# Regex for validating header values. - -# We don't attempt to support obsolete line folding. - -# Include HTAB (\x09), SP (\x20), VCHAR (\x21-\x7e), obs-text (\x80-\xff). - -# The ABNF is complicated because it attempts to express that optional -# whitespace is ignored. We strip whitespace and don't revalidate that. - -# See also https://www.rfc-editor.org/errata_search.php?rfc=7230&eid=4189 - -_value_re = re.compile(rb"[\x09\x20-\x7e\x80-\xff]*") - - -async def read_request(stream: asyncio.StreamReader) -> Tuple[str, Headers]: - """ - Read an HTTP/1.1 GET request and return ``(path, headers)``. - - ``path`` isn't URL-decoded or validated in any way. - - ``path`` and ``headers`` are expected to contain only ASCII characters. - Other characters are represented with surrogate escapes. - - :func:`read_request` doesn't attempt to read the request body because - WebSocket handshake requests don't have one. If the request contains a - body, it may be read from ``stream`` after this coroutine returns. - - Args: - stream: Input to read the request from. - - Raises: - EOFError: If the connection is closed without a full HTTP request. - SecurityError: If the request exceeds a security limit. - ValueError: If the request isn't well formatted. - - """ - # https://www.rfc-editor.org/rfc/rfc7230.html#section-3.1.1 - - # Parsing is simple because fixed values are expected for method and - # version and because path isn't checked. Since WebSocket software tends - # to implement HTTP/1.1 strictly, there's little need for lenient parsing. - - try: - request_line = await read_line(stream) - except EOFError as exc: - raise EOFError("connection closed while reading HTTP request line") from exc - - try: - method, raw_path, version = request_line.split(b" ", 2) - except ValueError: # not enough values to unpack (expected 3, got 1-2) - raise ValueError(f"invalid HTTP request line: {d(request_line)}") from None - - if method != b"GET": - raise ValueError(f"unsupported HTTP method: {d(method)}") - if version != b"HTTP/1.1": - raise ValueError(f"unsupported HTTP version: {d(version)}") - path = raw_path.decode("ascii", "surrogateescape") - - headers = await read_headers(stream) - - return path, headers - - -async def read_response(stream: asyncio.StreamReader) -> Tuple[int, str, Headers]: - """ - Read an HTTP/1.1 response and return ``(status_code, reason, headers)``. - - ``reason`` and ``headers`` are expected to contain only ASCII characters. - Other characters are represented with surrogate escapes. - - :func:`read_request` doesn't attempt to read the response body because - WebSocket handshake responses don't have one. If the response contains a - body, it may be read from ``stream`` after this coroutine returns. - - Args: - stream: Input to read the response from. - - Raises: - EOFError: If the connection is closed without a full HTTP response. - SecurityError: If the response exceeds a security limit. - ValueError: If the response isn't well formatted. - - """ - # https://www.rfc-editor.org/rfc/rfc7230.html#section-3.1.2 - - # As in read_request, parsing is simple because a fixed value is expected - # for version, status_code is a 3-digit number, and reason can be ignored. - - try: - status_line = await read_line(stream) - except EOFError as exc: - raise EOFError("connection closed while reading HTTP status line") from exc - - try: - version, raw_status_code, raw_reason = status_line.split(b" ", 2) - except ValueError: # not enough values to unpack (expected 3, got 1-2) - raise ValueError(f"invalid HTTP status line: {d(status_line)}") from None - - if version != b"HTTP/1.1": - raise ValueError(f"unsupported HTTP version: {d(version)}") - try: - status_code = int(raw_status_code) - except ValueError: # invalid literal for int() with base 10 - raise ValueError(f"invalid HTTP status code: {d(raw_status_code)}") from None - if not 100 <= status_code < 1000: - raise ValueError(f"unsupported HTTP status code: {d(raw_status_code)}") - if not _value_re.fullmatch(raw_reason): - raise ValueError(f"invalid HTTP reason phrase: {d(raw_reason)}") - reason = raw_reason.decode() - - headers = await read_headers(stream) - - return status_code, reason, headers - - -async def read_headers(stream: asyncio.StreamReader) -> Headers: - """ - Read HTTP headers from ``stream``. - - Non-ASCII characters are represented with surrogate escapes. - - """ - # https://www.rfc-editor.org/rfc/rfc7230.html#section-3.2 - - # We don't attempt to support obsolete line folding. - - headers = Headers() - for _ in range(MAX_HEADERS + 1): - try: - line = await read_line(stream) - except EOFError as exc: - raise EOFError("connection closed while reading HTTP headers") from exc - if line == b"": - break - - try: - raw_name, raw_value = line.split(b":", 1) - except ValueError: # not enough values to unpack (expected 2, got 1) - raise ValueError(f"invalid HTTP header line: {d(line)}") from None - if not _token_re.fullmatch(raw_name): - raise ValueError(f"invalid HTTP header name: {d(raw_name)}") - raw_value = raw_value.strip(b" \t") - if not _value_re.fullmatch(raw_value): - raise ValueError(f"invalid HTTP header value: {d(raw_value)}") - - name = raw_name.decode("ascii") # guaranteed to be ASCII at this point - value = raw_value.decode("ascii", "surrogateescape") - headers[name] = value - - else: - raise SecurityError("too many HTTP headers") - - return headers - - -async def read_line(stream: asyncio.StreamReader) -> bytes: - """ - Read a single line from ``stream``. - - CRLF is stripped from the return value. - - """ - # Security: this is bounded by the StreamReader's limit (default = 32 KiB). - line = await stream.readline() - # Security: this guarantees header values are small (hard-coded = 8 KiB) - if len(line) > MAX_LINE: - raise SecurityError("line too long") - # Not mandatory but safe - https://www.rfc-editor.org/rfc/rfc7230.html#section-3.5 - if not line.endswith(b"\r\n"): - raise EOFError("line without CRLF") - return line[:-2] diff --git a/venv/lib/python3.11/site-packages/websockets/legacy/protocol.py b/venv/lib/python3.11/site-packages/websockets/legacy/protocol.py deleted file mode 100644 index 19cee0e..0000000 --- a/venv/lib/python3.11/site-packages/websockets/legacy/protocol.py +++ /dev/null @@ -1,1645 +0,0 @@ -from __future__ import annotations - -import asyncio -import codecs -import collections -import logging -import random -import ssl -import struct -import sys -import time -import uuid -import warnings -from typing import ( - Any, - AsyncIterable, - AsyncIterator, - Awaitable, - Callable, - Deque, - Dict, - Iterable, - List, - Mapping, - Optional, - Tuple, - Union, - cast, -) - -from ..datastructures import Headers -from ..exceptions import ( - ConnectionClosed, - ConnectionClosedError, - ConnectionClosedOK, - InvalidState, - PayloadTooBig, - ProtocolError, -) -from ..extensions import Extension -from ..frames import ( - OK_CLOSE_CODES, - OP_BINARY, - OP_CLOSE, - OP_CONT, - OP_PING, - OP_PONG, - OP_TEXT, - Close, - CloseCode, - Opcode, - prepare_ctrl, - prepare_data, -) -from ..protocol import State -from ..typing import Data, LoggerLike, Subprotocol -from .compatibility import asyncio_timeout -from .framing import Frame - - -__all__ = ["WebSocketCommonProtocol", "broadcast"] - - -# In order to ensure consistency, the code always checks the current value of -# WebSocketCommonProtocol.state before assigning a new value and never yields -# between the check and the assignment. - - -class WebSocketCommonProtocol(asyncio.Protocol): - """ - WebSocket connection. - - :class:`WebSocketCommonProtocol` provides APIs shared between WebSocket - servers and clients. You shouldn't use it directly. Instead, use - :class:`~websockets.client.WebSocketClientProtocol` or - :class:`~websockets.server.WebSocketServerProtocol`. - - This documentation focuses on low-level details that aren't covered in the - documentation of :class:`~websockets.client.WebSocketClientProtocol` and - :class:`~websockets.server.WebSocketServerProtocol` for the sake of - simplicity. - - Once the connection is open, a Ping_ frame is sent every ``ping_interval`` - seconds. This serves as a keepalive. It helps keeping the connection open, - especially in the presence of proxies with short timeouts on inactive - connections. Set ``ping_interval`` to :obj:`None` to disable this behavior. - - .. _Ping: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.5.2 - - If the corresponding Pong_ frame isn't received within ``ping_timeout`` - seconds, the connection is considered unusable and is closed with code 1011. - This ensures that the remote endpoint remains responsive. Set - ``ping_timeout`` to :obj:`None` to disable this behavior. - - .. _Pong: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.5.3 - - See the discussion of :doc:`timeouts <../../topics/timeouts>` for details. - - The ``close_timeout`` parameter defines a maximum wait time for completing - the closing handshake and terminating the TCP connection. For legacy - reasons, :meth:`close` completes in at most ``5 * close_timeout`` seconds - for clients and ``4 * close_timeout`` for servers. - - ``close_timeout`` is a parameter of the protocol because websockets usually - calls :meth:`close` implicitly upon exit: - - * on the client side, when using :func:`~websockets.client.connect` as a - context manager; - * on the server side, when the connection handler terminates. - - To apply a timeout to any other API, wrap it in :func:`~asyncio.timeout` or - :func:`~asyncio.wait_for`. - - The ``max_size`` parameter enforces the maximum size for incoming messages - in bytes. The default value is 1 MiB. If a larger message is received, - :meth:`recv` will raise :exc:`~websockets.exceptions.ConnectionClosedError` - and the connection will be closed with code 1009. - - The ``max_queue`` parameter sets the maximum length of the queue that - holds incoming messages. The default value is ``32``. Messages are added - to an in-memory queue when they're received; then :meth:`recv` pops from - that queue. In order to prevent excessive memory consumption when - messages are received faster than they can be processed, the queue must - be bounded. If the queue fills up, the protocol stops processing incoming - data until :meth:`recv` is called. In this situation, various receive - buffers (at least in :mod:`asyncio` and in the OS) will fill up, then the - TCP receive window will shrink, slowing down transmission to avoid packet - loss. - - Since Python can use up to 4 bytes of memory to represent a single - character, each connection may use up to ``4 * max_size * max_queue`` - bytes of memory to store incoming messages. By default, this is 128 MiB. - You may want to lower the limits, depending on your application's - requirements. - - The ``read_limit`` argument sets the high-water limit of the buffer for - incoming bytes. The low-water limit is half the high-water limit. The - default value is 64 KiB, half of asyncio's default (based on the current - implementation of :class:`~asyncio.StreamReader`). - - The ``write_limit`` argument sets the high-water limit of the buffer for - outgoing bytes. The low-water limit is a quarter of the high-water limit. - The default value is 64 KiB, equal to asyncio's default (based on the - current implementation of ``FlowControlMixin``). - - See the discussion of :doc:`memory usage <../../topics/memory>` for details. - - Args: - logger: Logger for this server. - It defaults to ``logging.getLogger("websockets.protocol")``. - See the :doc:`logging guide <../../topics/logging>` for details. - ping_interval: Delay between keepalive pings in seconds. - :obj:`None` disables keepalive pings. - ping_timeout: Timeout for keepalive pings in seconds. - :obj:`None` disables timeouts. - close_timeout: Timeout for closing the connection in seconds. - For legacy reasons, the actual timeout is 4 or 5 times larger. - max_size: Maximum size of incoming messages in bytes. - :obj:`None` disables the limit. - max_queue: Maximum number of incoming messages in receive buffer. - :obj:`None` disables the limit. - read_limit: High-water mark of read buffer in bytes. - write_limit: High-water mark of write buffer in bytes. - - """ - - # There are only two differences between the client-side and server-side - # behavior: masking the payload and closing the underlying TCP connection. - # Set is_client = True/False and side = "client"/"server" to pick a side. - is_client: bool - side: str = "undefined" - - def __init__( - self, - *, - logger: Optional[LoggerLike] = None, - ping_interval: Optional[float] = 20, - ping_timeout: Optional[float] = 20, - close_timeout: Optional[float] = None, - max_size: Optional[int] = 2**20, - max_queue: Optional[int] = 2**5, - read_limit: int = 2**16, - write_limit: int = 2**16, - # The following arguments are kept only for backwards compatibility. - host: Optional[str] = None, - port: Optional[int] = None, - secure: Optional[bool] = None, - legacy_recv: bool = False, - loop: Optional[asyncio.AbstractEventLoop] = None, - timeout: Optional[float] = None, - ) -> None: - if legacy_recv: # pragma: no cover - warnings.warn("legacy_recv is deprecated", DeprecationWarning) - - # Backwards compatibility: close_timeout used to be called timeout. - if timeout is None: - timeout = 10 - else: - warnings.warn("rename timeout to close_timeout", DeprecationWarning) - # If both are specified, timeout is ignored. - if close_timeout is None: - close_timeout = timeout - - # Backwards compatibility: the loop parameter used to be supported. - if loop is None: - loop = asyncio.get_event_loop() - else: - warnings.warn("remove loop argument", DeprecationWarning) - - self.ping_interval = ping_interval - self.ping_timeout = ping_timeout - self.close_timeout = close_timeout - self.max_size = max_size - self.max_queue = max_queue - self.read_limit = read_limit - self.write_limit = write_limit - - # Unique identifier. For logs. - self.id: uuid.UUID = uuid.uuid4() - """Unique identifier of the connection. Useful in logs.""" - - # Logger or LoggerAdapter for this connection. - if logger is None: - logger = logging.getLogger("websockets.protocol") - self.logger: LoggerLike = logging.LoggerAdapter(logger, {"websocket": self}) - """Logger for this connection.""" - - # Track if DEBUG is enabled. Shortcut logging calls if it isn't. - self.debug = logger.isEnabledFor(logging.DEBUG) - - self.loop = loop - - self._host = host - self._port = port - self._secure = secure - self.legacy_recv = legacy_recv - - # Configure read buffer limits. The high-water limit is defined by - # ``self.read_limit``. The ``limit`` argument controls the line length - # limit and half the buffer limit of :class:`~asyncio.StreamReader`. - # That's why it must be set to half of ``self.read_limit``. - self.reader = asyncio.StreamReader(limit=read_limit // 2, loop=loop) - - # Copied from asyncio.FlowControlMixin - self._paused = False - self._drain_waiter: Optional[asyncio.Future[None]] = None - - self._drain_lock = asyncio.Lock() - - # This class implements the data transfer and closing handshake, which - # are shared between the client-side and the server-side. - # Subclasses implement the opening handshake and, on success, execute - # :meth:`connection_open` to change the state to OPEN. - self.state = State.CONNECTING - if self.debug: - self.logger.debug("= connection is CONNECTING") - - # HTTP protocol parameters. - self.path: str - """Path of the opening handshake request.""" - self.request_headers: Headers - """Opening handshake request headers.""" - self.response_headers: Headers - """Opening handshake response headers.""" - - # WebSocket protocol parameters. - self.extensions: List[Extension] = [] - self.subprotocol: Optional[Subprotocol] = None - """Subprotocol, if one was negotiated.""" - - # Close code and reason, set when a close frame is sent or received. - self.close_rcvd: Optional[Close] = None - self.close_sent: Optional[Close] = None - self.close_rcvd_then_sent: Optional[bool] = None - - # Completed when the connection state becomes CLOSED. Translates the - # :meth:`connection_lost` callback to a :class:`~asyncio.Future` - # that can be awaited. (Other :class:`~asyncio.Protocol` callbacks are - # translated by ``self.stream_reader``). - self.connection_lost_waiter: asyncio.Future[None] = loop.create_future() - - # Queue of received messages. - self.messages: Deque[Data] = collections.deque() - self._pop_message_waiter: Optional[asyncio.Future[None]] = None - self._put_message_waiter: Optional[asyncio.Future[None]] = None - - # Protect sending fragmented messages. - self._fragmented_message_waiter: Optional[asyncio.Future[None]] = None - - # Mapping of ping IDs to pong waiters, in chronological order. - self.pings: Dict[bytes, Tuple[asyncio.Future[float], float]] = {} - - self.latency: float = 0 - """ - Latency of the connection, in seconds. - - This value is updated after sending a ping frame and receiving a - matching pong frame. Before the first ping, :attr:`latency` is ``0``. - - By default, websockets enables a :ref:`keepalive <keepalive>` mechanism - that sends ping frames automatically at regular intervals. You can also - send ping frames and measure latency with :meth:`ping`. - """ - - # Task running the data transfer. - self.transfer_data_task: asyncio.Task[None] - - # Exception that occurred during data transfer, if any. - self.transfer_data_exc: Optional[BaseException] = None - - # Task sending keepalive pings. - self.keepalive_ping_task: asyncio.Task[None] - - # Task closing the TCP connection. - self.close_connection_task: asyncio.Task[None] - - # Copied from asyncio.FlowControlMixin - async def _drain_helper(self) -> None: # pragma: no cover - if self.connection_lost_waiter.done(): - raise ConnectionResetError("Connection lost") - if not self._paused: - return - waiter = self._drain_waiter - assert waiter is None or waiter.cancelled() - waiter = self.loop.create_future() - self._drain_waiter = waiter - await waiter - - # Copied from asyncio.StreamWriter - async def _drain(self) -> None: # pragma: no cover - if self.reader is not None: - exc = self.reader.exception() - if exc is not None: - raise exc - if self.transport is not None: - if self.transport.is_closing(): - # Yield to the event loop so connection_lost() may be - # called. Without this, _drain_helper() would return - # immediately, and code that calls - # write(...); yield from drain() - # in a loop would never call connection_lost(), so it - # would not see an error when the socket is closed. - await asyncio.sleep(0) - await self._drain_helper() - - def connection_open(self) -> None: - """ - Callback when the WebSocket opening handshake completes. - - Enter the OPEN state and start the data transfer phase. - - """ - # 4.1. The WebSocket Connection is Established. - assert self.state is State.CONNECTING - self.state = State.OPEN - if self.debug: - self.logger.debug("= connection is OPEN") - # Start the task that receives incoming WebSocket messages. - self.transfer_data_task = self.loop.create_task(self.transfer_data()) - # Start the task that sends pings at regular intervals. - self.keepalive_ping_task = self.loop.create_task(self.keepalive_ping()) - # Start the task that eventually closes the TCP connection. - self.close_connection_task = self.loop.create_task(self.close_connection()) - - @property - def host(self) -> Optional[str]: - alternative = "remote_address" if self.is_client else "local_address" - warnings.warn(f"use {alternative}[0] instead of host", DeprecationWarning) - return self._host - - @property - def port(self) -> Optional[int]: - alternative = "remote_address" if self.is_client else "local_address" - warnings.warn(f"use {alternative}[1] instead of port", DeprecationWarning) - return self._port - - @property - def secure(self) -> Optional[bool]: - warnings.warn("don't use secure", DeprecationWarning) - return self._secure - - # Public API - - @property - def local_address(self) -> Any: - """ - Local address of the connection. - - For IPv4 connections, this is a ``(host, port)`` tuple. - - The format of the address depends on the address family; - see :meth:`~socket.socket.getsockname`. - - :obj:`None` if the TCP connection isn't established yet. - - """ - try: - transport = self.transport - except AttributeError: - return None - else: - return transport.get_extra_info("sockname") - - @property - def remote_address(self) -> Any: - """ - Remote address of the connection. - - For IPv4 connections, this is a ``(host, port)`` tuple. - - The format of the address depends on the address family; - see :meth:`~socket.socket.getpeername`. - - :obj:`None` if the TCP connection isn't established yet. - - """ - try: - transport = self.transport - except AttributeError: - return None - else: - return transport.get_extra_info("peername") - - @property - def open(self) -> bool: - """ - :obj:`True` when the connection is open; :obj:`False` otherwise. - - This attribute may be used to detect disconnections. However, this - approach is discouraged per the EAFP_ principle. Instead, you should - handle :exc:`~websockets.exceptions.ConnectionClosed` exceptions. - - .. _EAFP: https://docs.python.org/3/glossary.html#term-eafp - - """ - return self.state is State.OPEN and not self.transfer_data_task.done() - - @property - def closed(self) -> bool: - """ - :obj:`True` when the connection is closed; :obj:`False` otherwise. - - Be aware that both :attr:`open` and :attr:`closed` are :obj:`False` - during the opening and closing sequences. - - """ - return self.state is State.CLOSED - - @property - def close_code(self) -> Optional[int]: - """ - WebSocket close code, defined in `section 7.1.5 of RFC 6455`_. - - .. _section 7.1.5 of RFC 6455: - https://www.rfc-editor.org/rfc/rfc6455.html#section-7.1.5 - - :obj:`None` if the connection isn't closed yet. - - """ - if self.state is not State.CLOSED: - return None - elif self.close_rcvd is None: - return CloseCode.ABNORMAL_CLOSURE - else: - return self.close_rcvd.code - - @property - def close_reason(self) -> Optional[str]: - """ - WebSocket close reason, defined in `section 7.1.6 of RFC 6455`_. - - .. _section 7.1.6 of RFC 6455: - https://www.rfc-editor.org/rfc/rfc6455.html#section-7.1.6 - - :obj:`None` if the connection isn't closed yet. - - """ - if self.state is not State.CLOSED: - return None - elif self.close_rcvd is None: - return "" - else: - return self.close_rcvd.reason - - async def __aiter__(self) -> AsyncIterator[Data]: - """ - Iterate on incoming messages. - - The iterator exits normally when the connection is closed with the close - code 1000 (OK) or 1001 (going away) or without a close code. - - It raises a :exc:`~websockets.exceptions.ConnectionClosedError` - exception when the connection is closed with any other code. - - """ - try: - while True: - yield await self.recv() - except ConnectionClosedOK: - return - - async def recv(self) -> Data: - """ - Receive the next message. - - When the connection is closed, :meth:`recv` raises - :exc:`~websockets.exceptions.ConnectionClosed`. Specifically, it raises - :exc:`~websockets.exceptions.ConnectionClosedOK` after a normal - connection closure and - :exc:`~websockets.exceptions.ConnectionClosedError` after a protocol - error or a network failure. This is how you detect the end of the - message stream. - - Canceling :meth:`recv` is safe. There's no risk of losing the next - message. The next invocation of :meth:`recv` will return it. - - This makes it possible to enforce a timeout by wrapping :meth:`recv` in - :func:`~asyncio.timeout` or :func:`~asyncio.wait_for`. - - Returns: - Data: A string (:class:`str`) for a Text_ frame. A bytestring - (:class:`bytes`) for a Binary_ frame. - - .. _Text: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.6 - .. _Binary: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.6 - - Raises: - ConnectionClosed: When the connection is closed. - RuntimeError: If two coroutines call :meth:`recv` concurrently. - - """ - if self._pop_message_waiter is not None: - raise RuntimeError( - "cannot call recv while another coroutine " - "is already waiting for the next message" - ) - - # Don't await self.ensure_open() here: - # - messages could be available in the queue even if the connection - # is closed; - # - messages could be received before the closing frame even if the - # connection is closing. - - # Wait until there's a message in the queue (if necessary) or the - # connection is closed. - while len(self.messages) <= 0: - pop_message_waiter: asyncio.Future[None] = self.loop.create_future() - self._pop_message_waiter = pop_message_waiter - try: - # If asyncio.wait() is canceled, it doesn't cancel - # pop_message_waiter and self.transfer_data_task. - await asyncio.wait( - [pop_message_waiter, self.transfer_data_task], - return_when=asyncio.FIRST_COMPLETED, - ) - finally: - self._pop_message_waiter = None - - # If asyncio.wait(...) exited because self.transfer_data_task - # completed before receiving a new message, raise a suitable - # exception (or return None if legacy_recv is enabled). - if not pop_message_waiter.done(): - if self.legacy_recv: - return None # type: ignore - else: - # Wait until the connection is closed to raise - # ConnectionClosed with the correct code and reason. - await self.ensure_open() - - # Pop a message from the queue. - message = self.messages.popleft() - - # Notify transfer_data(). - if self._put_message_waiter is not None: - self._put_message_waiter.set_result(None) - self._put_message_waiter = None - - return message - - async def send( - self, - message: Union[Data, Iterable[Data], AsyncIterable[Data]], - ) -> None: - """ - Send a message. - - A string (:class:`str`) is sent as a Text_ frame. A bytestring or - bytes-like object (:class:`bytes`, :class:`bytearray`, or - :class:`memoryview`) is sent as a Binary_ frame. - - .. _Text: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.6 - .. _Binary: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.6 - - :meth:`send` also accepts an iterable or an asynchronous iterable of - strings, bytestrings, or bytes-like objects to enable fragmentation_. - Each item is treated as a message fragment and sent in its own frame. - All items must be of the same type, or else :meth:`send` will raise a - :exc:`TypeError` and the connection will be closed. - - .. _fragmentation: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.4 - - :meth:`send` rejects dict-like objects because this is often an error. - (If you want to send the keys of a dict-like object as fragments, call - its :meth:`~dict.keys` method and pass the result to :meth:`send`.) - - Canceling :meth:`send` is discouraged. Instead, you should close the - connection with :meth:`close`. Indeed, there are only two situations - where :meth:`send` may yield control to the event loop and then get - canceled; in both cases, :meth:`close` has the same effect and is - more clear: - - 1. The write buffer is full. If you don't want to wait until enough - data is sent, your only alternative is to close the connection. - :meth:`close` will likely time out then abort the TCP connection. - 2. ``message`` is an asynchronous iterator that yields control. - Stopping in the middle of a fragmented message will cause a - protocol error and the connection will be closed. - - When the connection is closed, :meth:`send` raises - :exc:`~websockets.exceptions.ConnectionClosed`. Specifically, it - raises :exc:`~websockets.exceptions.ConnectionClosedOK` after a normal - connection closure and - :exc:`~websockets.exceptions.ConnectionClosedError` after a protocol - error or a network failure. - - Args: - message (Union[Data, Iterable[Data], AsyncIterable[Data]): message - to send. - - Raises: - ConnectionClosed: When the connection is closed. - TypeError: If ``message`` doesn't have a supported type. - - """ - await self.ensure_open() - - # While sending a fragmented message, prevent sending other messages - # until all fragments are sent. - while self._fragmented_message_waiter is not None: - await asyncio.shield(self._fragmented_message_waiter) - - # Unfragmented message -- this case must be handled first because - # strings and bytes-like objects are iterable. - - if isinstance(message, (str, bytes, bytearray, memoryview)): - opcode, data = prepare_data(message) - await self.write_frame(True, opcode, data) - - # Catch a common mistake -- passing a dict to send(). - - elif isinstance(message, Mapping): - raise TypeError("data is a dict-like object") - - # Fragmented message -- regular iterator. - - elif isinstance(message, Iterable): - # Work around https://github.com/python/mypy/issues/6227 - message = cast(Iterable[Data], message) - - iter_message = iter(message) - try: - fragment = next(iter_message) - except StopIteration: - return - opcode, data = prepare_data(fragment) - - self._fragmented_message_waiter = asyncio.Future() - try: - # First fragment. - await self.write_frame(False, opcode, data) - - # Other fragments. - for fragment in iter_message: - confirm_opcode, data = prepare_data(fragment) - if confirm_opcode != opcode: - raise TypeError("data contains inconsistent types") - await self.write_frame(False, OP_CONT, data) - - # Final fragment. - await self.write_frame(True, OP_CONT, b"") - - except (Exception, asyncio.CancelledError): - # We're half-way through a fragmented message and we can't - # complete it. This makes the connection unusable. - self.fail_connection(CloseCode.INTERNAL_ERROR) - raise - - finally: - self._fragmented_message_waiter.set_result(None) - self._fragmented_message_waiter = None - - # Fragmented message -- asynchronous iterator - - elif isinstance(message, AsyncIterable): - # Implement aiter_message = aiter(message) without aiter - # Work around https://github.com/python/mypy/issues/5738 - aiter_message = cast( - Callable[[AsyncIterable[Data]], AsyncIterator[Data]], - type(message).__aiter__, - )(message) - try: - # Implement fragment = anext(aiter_message) without anext - # Work around https://github.com/python/mypy/issues/5738 - fragment = await cast( - Callable[[AsyncIterator[Data]], Awaitable[Data]], - type(aiter_message).__anext__, - )(aiter_message) - except StopAsyncIteration: - return - opcode, data = prepare_data(fragment) - - self._fragmented_message_waiter = asyncio.Future() - try: - # First fragment. - await self.write_frame(False, opcode, data) - - # Other fragments. - async for fragment in aiter_message: - confirm_opcode, data = prepare_data(fragment) - if confirm_opcode != opcode: - raise TypeError("data contains inconsistent types") - await self.write_frame(False, OP_CONT, data) - - # Final fragment. - await self.write_frame(True, OP_CONT, b"") - - except (Exception, asyncio.CancelledError): - # We're half-way through a fragmented message and we can't - # complete it. This makes the connection unusable. - self.fail_connection(CloseCode.INTERNAL_ERROR) - raise - - finally: - self._fragmented_message_waiter.set_result(None) - self._fragmented_message_waiter = None - - else: - raise TypeError("data must be str, bytes-like, or iterable") - - async def close( - self, - code: int = CloseCode.NORMAL_CLOSURE, - reason: str = "", - ) -> None: - """ - Perform the closing handshake. - - :meth:`close` waits for the other end to complete the handshake and - for the TCP connection to terminate. As a consequence, there's no need - to await :meth:`wait_closed` after :meth:`close`. - - :meth:`close` is idempotent: it doesn't do anything once the - connection is closed. - - Wrapping :func:`close` in :func:`~asyncio.create_task` is safe, given - that errors during connection termination aren't particularly useful. - - Canceling :meth:`close` is discouraged. If it takes too long, you can - set a shorter ``close_timeout``. If you don't want to wait, let the - Python process exit, then the OS will take care of closing the TCP - connection. - - Args: - code: WebSocket close code. - reason: WebSocket close reason. - - """ - try: - async with asyncio_timeout(self.close_timeout): - await self.write_close_frame(Close(code, reason)) - except asyncio.TimeoutError: - # If the close frame cannot be sent because the send buffers - # are full, the closing handshake won't complete anyway. - # Fail the connection to shut down faster. - self.fail_connection() - - # If no close frame is received within the timeout, asyncio_timeout() - # cancels the data transfer task and raises TimeoutError. - - # If close() is called multiple times concurrently and one of these - # calls hits the timeout, the data transfer task will be canceled. - # Other calls will receive a CancelledError here. - - try: - # If close() is canceled during the wait, self.transfer_data_task - # is canceled before the timeout elapses. - async with asyncio_timeout(self.close_timeout): - await self.transfer_data_task - except (asyncio.TimeoutError, asyncio.CancelledError): - pass - - # Wait for the close connection task to close the TCP connection. - await asyncio.shield(self.close_connection_task) - - async def wait_closed(self) -> None: - """ - Wait until the connection is closed. - - This coroutine is identical to the :attr:`closed` attribute, except it - can be awaited. - - This can make it easier to detect connection termination, regardless - of its cause, in tasks that interact with the WebSocket connection. - - """ - await asyncio.shield(self.connection_lost_waiter) - - async def ping(self, data: Optional[Data] = None) -> Awaitable[None]: - """ - Send a Ping_. - - .. _Ping: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.5.2 - - A ping may serve as a keepalive, as a check that the remote endpoint - received all messages up to this point, or to measure :attr:`latency`. - - Canceling :meth:`ping` is discouraged. If :meth:`ping` doesn't return - immediately, it means the write buffer is full. If you don't want to - wait, you should close the connection. - - Canceling the :class:`~asyncio.Future` returned by :meth:`ping` has no - effect. - - Args: - data (Optional[Data]): payload of the ping; a string will be - encoded to UTF-8; or :obj:`None` to generate a payload - containing four random bytes. - - Returns: - ~asyncio.Future[float]: A future that will be completed when the - corresponding pong is received. You can ignore it if you don't - intend to wait. The result of the future is the latency of the - connection in seconds. - - :: - - pong_waiter = await ws.ping() - # only if you want to wait for the corresponding pong - latency = await pong_waiter - - Raises: - ConnectionClosed: When the connection is closed. - RuntimeError: If another ping was sent with the same data and - the corresponding pong wasn't received yet. - - """ - await self.ensure_open() - - if data is not None: - data = prepare_ctrl(data) - - # Protect against duplicates if a payload is explicitly set. - if data in self.pings: - raise RuntimeError("already waiting for a pong with the same data") - - # Generate a unique random payload otherwise. - while data is None or data in self.pings: - data = struct.pack("!I", random.getrandbits(32)) - - pong_waiter = self.loop.create_future() - # Resolution of time.monotonic() may be too low on Windows. - ping_timestamp = time.perf_counter() - self.pings[data] = (pong_waiter, ping_timestamp) - - await self.write_frame(True, OP_PING, data) - - return asyncio.shield(pong_waiter) - - async def pong(self, data: Data = b"") -> None: - """ - Send a Pong_. - - .. _Pong: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.5.3 - - An unsolicited pong may serve as a unidirectional heartbeat. - - Canceling :meth:`pong` is discouraged. If :meth:`pong` doesn't return - immediately, it means the write buffer is full. If you don't want to - wait, you should close the connection. - - Args: - data (Data): Payload of the pong. A string will be encoded to - UTF-8. - - Raises: - ConnectionClosed: When the connection is closed. - - """ - await self.ensure_open() - - data = prepare_ctrl(data) - - await self.write_frame(True, OP_PONG, data) - - # Private methods - no guarantees. - - def connection_closed_exc(self) -> ConnectionClosed: - exc: ConnectionClosed - if ( - self.close_rcvd is not None - and self.close_rcvd.code in OK_CLOSE_CODES - and self.close_sent is not None - and self.close_sent.code in OK_CLOSE_CODES - ): - exc = ConnectionClosedOK( - self.close_rcvd, - self.close_sent, - self.close_rcvd_then_sent, - ) - else: - exc = ConnectionClosedError( - self.close_rcvd, - self.close_sent, - self.close_rcvd_then_sent, - ) - # Chain to the exception that terminated data transfer, if any. - exc.__cause__ = self.transfer_data_exc - return exc - - async def ensure_open(self) -> None: - """ - Check that the WebSocket connection is open. - - Raise :exc:`~websockets.exceptions.ConnectionClosed` if it isn't. - - """ - # Handle cases from most common to least common for performance. - if self.state is State.OPEN: - # If self.transfer_data_task exited without a closing handshake, - # self.close_connection_task may be closing the connection, going - # straight from OPEN to CLOSED. - if self.transfer_data_task.done(): - await asyncio.shield(self.close_connection_task) - raise self.connection_closed_exc() - else: - return - - if self.state is State.CLOSED: - raise self.connection_closed_exc() - - if self.state is State.CLOSING: - # If we started the closing handshake, wait for its completion to - # get the proper close code and reason. self.close_connection_task - # will complete within 4 or 5 * close_timeout after close(). The - # CLOSING state also occurs when failing the connection. In that - # case self.close_connection_task will complete even faster. - await asyncio.shield(self.close_connection_task) - raise self.connection_closed_exc() - - # Control may only reach this point in buggy third-party subclasses. - assert self.state is State.CONNECTING - raise InvalidState("WebSocket connection isn't established yet") - - async def transfer_data(self) -> None: - """ - Read incoming messages and put them in a queue. - - This coroutine runs in a task until the closing handshake is started. - - """ - try: - while True: - message = await self.read_message() - - # Exit the loop when receiving a close frame. - if message is None: - break - - # Wait until there's room in the queue (if necessary). - if self.max_queue is not None: - while len(self.messages) >= self.max_queue: - self._put_message_waiter = self.loop.create_future() - try: - await asyncio.shield(self._put_message_waiter) - finally: - self._put_message_waiter = None - - # Put the message in the queue. - self.messages.append(message) - - # Notify recv(). - if self._pop_message_waiter is not None: - self._pop_message_waiter.set_result(None) - self._pop_message_waiter = None - - except asyncio.CancelledError as exc: - self.transfer_data_exc = exc - # If fail_connection() cancels this task, avoid logging the error - # twice and failing the connection again. - raise - - except ProtocolError as exc: - self.transfer_data_exc = exc - self.fail_connection(CloseCode.PROTOCOL_ERROR) - - except (ConnectionError, TimeoutError, EOFError, ssl.SSLError) as exc: - # Reading data with self.reader.readexactly may raise: - # - most subclasses of ConnectionError if the TCP connection - # breaks, is reset, or is aborted; - # - TimeoutError if the TCP connection times out; - # - IncompleteReadError, a subclass of EOFError, if fewer - # bytes are available than requested; - # - ssl.SSLError if the other side infringes the TLS protocol. - self.transfer_data_exc = exc - self.fail_connection(CloseCode.ABNORMAL_CLOSURE) - - except UnicodeDecodeError as exc: - self.transfer_data_exc = exc - self.fail_connection(CloseCode.INVALID_DATA) - - except PayloadTooBig as exc: - self.transfer_data_exc = exc - self.fail_connection(CloseCode.MESSAGE_TOO_BIG) - - except Exception as exc: - # This shouldn't happen often because exceptions expected under - # regular circumstances are handled above. If it does, consider - # catching and handling more exceptions. - self.logger.error("data transfer failed", exc_info=True) - - self.transfer_data_exc = exc - self.fail_connection(CloseCode.INTERNAL_ERROR) - - async def read_message(self) -> Optional[Data]: - """ - Read a single message from the connection. - - Re-assemble data frames if the message is fragmented. - - Return :obj:`None` when the closing handshake is started. - - """ - frame = await self.read_data_frame(max_size=self.max_size) - - # A close frame was received. - if frame is None: - return None - - if frame.opcode == OP_TEXT: - text = True - elif frame.opcode == OP_BINARY: - text = False - else: # frame.opcode == OP_CONT - raise ProtocolError("unexpected opcode") - - # Shortcut for the common case - no fragmentation - if frame.fin: - return frame.data.decode("utf-8") if text else frame.data - - # 5.4. Fragmentation - fragments: List[Data] = [] - max_size = self.max_size - if text: - decoder_factory = codecs.getincrementaldecoder("utf-8") - decoder = decoder_factory(errors="strict") - if max_size is None: - - def append(frame: Frame) -> None: - nonlocal fragments - fragments.append(decoder.decode(frame.data, frame.fin)) - - else: - - def append(frame: Frame) -> None: - nonlocal fragments, max_size - fragments.append(decoder.decode(frame.data, frame.fin)) - assert isinstance(max_size, int) - max_size -= len(frame.data) - - else: - if max_size is None: - - def append(frame: Frame) -> None: - nonlocal fragments - fragments.append(frame.data) - - else: - - def append(frame: Frame) -> None: - nonlocal fragments, max_size - fragments.append(frame.data) - assert isinstance(max_size, int) - max_size -= len(frame.data) - - append(frame) - - while not frame.fin: - frame = await self.read_data_frame(max_size=max_size) - if frame is None: - raise ProtocolError("incomplete fragmented message") - if frame.opcode != OP_CONT: - raise ProtocolError("unexpected opcode") - append(frame) - - return ("" if text else b"").join(fragments) - - async def read_data_frame(self, max_size: Optional[int]) -> Optional[Frame]: - """ - Read a single data frame from the connection. - - Process control frames received before the next data frame. - - Return :obj:`None` if a close frame is encountered before any data frame. - - """ - # 6.2. Receiving Data - while True: - frame = await self.read_frame(max_size) - - # 5.5. Control Frames - if frame.opcode == OP_CLOSE: - # 7.1.5. The WebSocket Connection Close Code - # 7.1.6. The WebSocket Connection Close Reason - self.close_rcvd = Close.parse(frame.data) - if self.close_sent is not None: - self.close_rcvd_then_sent = False - try: - # Echo the original data instead of re-serializing it with - # Close.serialize() because that fails when the close frame - # is empty and Close.parse() synthesizes a 1005 close code. - await self.write_close_frame(self.close_rcvd, frame.data) - except ConnectionClosed: - # Connection closed before we could echo the close frame. - pass - return None - - elif frame.opcode == OP_PING: - # Answer pings, unless connection is CLOSING. - if self.state is State.OPEN: - try: - await self.pong(frame.data) - except ConnectionClosed: - # Connection closed while draining write buffer. - pass - - elif frame.opcode == OP_PONG: - if frame.data in self.pings: - pong_timestamp = time.perf_counter() - # Sending a pong for only the most recent ping is legal. - # Acknowledge all previous pings too in that case. - ping_id = None - ping_ids = [] - for ping_id, (pong_waiter, ping_timestamp) in self.pings.items(): - ping_ids.append(ping_id) - if not pong_waiter.done(): - pong_waiter.set_result(pong_timestamp - ping_timestamp) - if ping_id == frame.data: - self.latency = pong_timestamp - ping_timestamp - break - else: - raise AssertionError("solicited pong not found in pings") - # Remove acknowledged pings from self.pings. - for ping_id in ping_ids: - del self.pings[ping_id] - - # 5.6. Data Frames - else: - return frame - - async def read_frame(self, max_size: Optional[int]) -> Frame: - """ - Read a single frame from the connection. - - """ - frame = await Frame.read( - self.reader.readexactly, - mask=not self.is_client, - max_size=max_size, - extensions=self.extensions, - ) - if self.debug: - self.logger.debug("< %s", frame) - return frame - - def write_frame_sync(self, fin: bool, opcode: int, data: bytes) -> None: - frame = Frame(fin, Opcode(opcode), data) - if self.debug: - self.logger.debug("> %s", frame) - frame.write( - self.transport.write, - mask=self.is_client, - extensions=self.extensions, - ) - - async def drain(self) -> None: - try: - # drain() cannot be called concurrently by multiple coroutines: - # http://bugs.python.org/issue29930. Remove this lock when no - # version of Python where this bugs exists is supported anymore. - async with self._drain_lock: - # Handle flow control automatically. - await self._drain() - except ConnectionError: - # Terminate the connection if the socket died. - self.fail_connection() - # Wait until the connection is closed to raise ConnectionClosed - # with the correct code and reason. - await self.ensure_open() - - async def write_frame( - self, fin: bool, opcode: int, data: bytes, *, _state: int = State.OPEN - ) -> None: - # Defensive assertion for protocol compliance. - if self.state is not _state: # pragma: no cover - raise InvalidState( - f"Cannot write to a WebSocket in the {self.state.name} state" - ) - self.write_frame_sync(fin, opcode, data) - await self.drain() - - async def write_close_frame( - self, close: Close, data: Optional[bytes] = None - ) -> None: - """ - Write a close frame if and only if the connection state is OPEN. - - This dedicated coroutine must be used for writing close frames to - ensure that at most one close frame is sent on a given connection. - - """ - # Test and set the connection state before sending the close frame to - # avoid sending two frames in case of concurrent calls. - if self.state is State.OPEN: - # 7.1.3. The WebSocket Closing Handshake is Started - self.state = State.CLOSING - if self.debug: - self.logger.debug("= connection is CLOSING") - - self.close_sent = close - if self.close_rcvd is not None: - self.close_rcvd_then_sent = True - if data is None: - data = close.serialize() - - # 7.1.2. Start the WebSocket Closing Handshake - await self.write_frame(True, OP_CLOSE, data, _state=State.CLOSING) - - async def keepalive_ping(self) -> None: - """ - Send a Ping frame and wait for a Pong frame at regular intervals. - - This coroutine exits when the connection terminates and one of the - following happens: - - - :meth:`ping` raises :exc:`ConnectionClosed`, or - - :meth:`close_connection` cancels :attr:`keepalive_ping_task`. - - """ - if self.ping_interval is None: - return - - try: - while True: - await asyncio.sleep(self.ping_interval) - - # ping() raises CancelledError if the connection is closed, - # when close_connection() cancels self.keepalive_ping_task. - - # ping() raises ConnectionClosed if the connection is lost, - # when connection_lost() calls abort_pings(). - - self.logger.debug("% sending keepalive ping") - pong_waiter = await self.ping() - - if self.ping_timeout is not None: - try: - async with asyncio_timeout(self.ping_timeout): - await pong_waiter - self.logger.debug("% received keepalive pong") - except asyncio.TimeoutError: - if self.debug: - self.logger.debug("! timed out waiting for keepalive pong") - self.fail_connection( - CloseCode.INTERNAL_ERROR, - "keepalive ping timeout", - ) - break - - except ConnectionClosed: - pass - - except Exception: - self.logger.error("keepalive ping failed", exc_info=True) - - async def close_connection(self) -> None: - """ - 7.1.1. Close the WebSocket Connection - - When the opening handshake succeeds, :meth:`connection_open` starts - this coroutine in a task. It waits for the data transfer phase to - complete then it closes the TCP connection cleanly. - - When the opening handshake fails, :meth:`fail_connection` does the - same. There's no data transfer phase in that case. - - """ - try: - # Wait for the data transfer phase to complete. - if hasattr(self, "transfer_data_task"): - try: - await self.transfer_data_task - except asyncio.CancelledError: - pass - - # Cancel the keepalive ping task. - if hasattr(self, "keepalive_ping_task"): - self.keepalive_ping_task.cancel() - - # A client should wait for a TCP close from the server. - if self.is_client and hasattr(self, "transfer_data_task"): - if await self.wait_for_connection_lost(): - return - if self.debug: - self.logger.debug("! timed out waiting for TCP close") - - # Half-close the TCP connection if possible (when there's no TLS). - if self.transport.can_write_eof(): - if self.debug: - self.logger.debug("x half-closing TCP connection") - # write_eof() doesn't document which exceptions it raises. - # "[Errno 107] Transport endpoint is not connected" happens - # but it isn't completely clear under which circumstances. - # uvloop can raise RuntimeError here. - try: - self.transport.write_eof() - except (OSError, RuntimeError): # pragma: no cover - pass - - if await self.wait_for_connection_lost(): - return - if self.debug: - self.logger.debug("! timed out waiting for TCP close") - - finally: - # The try/finally ensures that the transport never remains open, - # even if this coroutine is canceled (for example). - await self.close_transport() - - async def close_transport(self) -> None: - """ - Close the TCP connection. - - """ - # If connection_lost() was called, the TCP connection is closed. - # However, if TLS is enabled, the transport still needs closing. - # Else asyncio complains: ResourceWarning: unclosed transport. - if self.connection_lost_waiter.done() and self.transport.is_closing(): - return - - # Close the TCP connection. Buffers are flushed asynchronously. - if self.debug: - self.logger.debug("x closing TCP connection") - self.transport.close() - - if await self.wait_for_connection_lost(): - return - if self.debug: - self.logger.debug("! timed out waiting for TCP close") - - # Abort the TCP connection. Buffers are discarded. - if self.debug: - self.logger.debug("x aborting TCP connection") - # Due to a bug in coverage, this is erroneously reported as not covered. - self.transport.abort() # pragma: no cover - - # connection_lost() is called quickly after aborting. - await self.wait_for_connection_lost() - - async def wait_for_connection_lost(self) -> bool: - """ - Wait until the TCP connection is closed or ``self.close_timeout`` elapses. - - Return :obj:`True` if the connection is closed and :obj:`False` - otherwise. - - """ - if not self.connection_lost_waiter.done(): - try: - async with asyncio_timeout(self.close_timeout): - await asyncio.shield(self.connection_lost_waiter) - except asyncio.TimeoutError: - pass - # Re-check self.connection_lost_waiter.done() synchronously because - # connection_lost() could run between the moment the timeout occurs - # and the moment this coroutine resumes running. - return self.connection_lost_waiter.done() - - def fail_connection( - self, - code: int = CloseCode.ABNORMAL_CLOSURE, - reason: str = "", - ) -> None: - """ - 7.1.7. Fail the WebSocket Connection - - This requires: - - 1. Stopping all processing of incoming data, which means cancelling - :attr:`transfer_data_task`. The close code will be 1006 unless a - close frame was received earlier. - - 2. Sending a close frame with an appropriate code if the opening - handshake succeeded and the other side is likely to process it. - - 3. Closing the connection. :meth:`close_connection` takes care of - this once :attr:`transfer_data_task` exits after being canceled. - - (The specification describes these steps in the opposite order.) - - """ - if self.debug: - self.logger.debug("! failing connection with code %d", code) - - # Cancel transfer_data_task if the opening handshake succeeded. - # cancel() is idempotent and ignored if the task is done already. - if hasattr(self, "transfer_data_task"): - self.transfer_data_task.cancel() - - # Send a close frame when the state is OPEN (a close frame was already - # sent if it's CLOSING), except when failing the connection because of - # an error reading from or writing to the network. - # Don't send a close frame if the connection is broken. - if code != CloseCode.ABNORMAL_CLOSURE and self.state is State.OPEN: - close = Close(code, reason) - - # Write the close frame without draining the write buffer. - - # Keeping fail_connection() synchronous guarantees it can't - # get stuck and simplifies the implementation of the callers. - # Not drainig the write buffer is acceptable in this context. - - # This duplicates a few lines of code from write_close_frame(). - - self.state = State.CLOSING - if self.debug: - self.logger.debug("= connection is CLOSING") - - # If self.close_rcvd was set, the connection state would be - # CLOSING. Therefore self.close_rcvd isn't set and we don't - # have to set self.close_rcvd_then_sent. - assert self.close_rcvd is None - self.close_sent = close - - self.write_frame_sync(True, OP_CLOSE, close.serialize()) - - # Start close_connection_task if the opening handshake didn't succeed. - if not hasattr(self, "close_connection_task"): - self.close_connection_task = self.loop.create_task(self.close_connection()) - - def abort_pings(self) -> None: - """ - Raise ConnectionClosed in pending keepalive pings. - - They'll never receive a pong once the connection is closed. - - """ - assert self.state is State.CLOSED - exc = self.connection_closed_exc() - - for pong_waiter, _ping_timestamp in self.pings.values(): - pong_waiter.set_exception(exc) - # If the exception is never retrieved, it will be logged when ping - # is garbage-collected. This is confusing for users. - # Given that ping is done (with an exception), canceling it does - # nothing, but it prevents logging the exception. - pong_waiter.cancel() - - # asyncio.Protocol methods - - def connection_made(self, transport: asyncio.BaseTransport) -> None: - """ - Configure write buffer limits. - - The high-water limit is defined by ``self.write_limit``. - - The low-water limit currently defaults to ``self.write_limit // 4`` in - :meth:`~asyncio.WriteTransport.set_write_buffer_limits`, which should - be all right for reasonable use cases of this library. - - This is the earliest point where we can get hold of the transport, - which means it's the best point for configuring it. - - """ - transport = cast(asyncio.Transport, transport) - transport.set_write_buffer_limits(self.write_limit) - self.transport = transport - - # Copied from asyncio.StreamReaderProtocol - self.reader.set_transport(transport) - - def connection_lost(self, exc: Optional[Exception]) -> None: - """ - 7.1.4. The WebSocket Connection is Closed. - - """ - self.state = State.CLOSED - self.logger.debug("= connection is CLOSED") - - self.abort_pings() - - # If self.connection_lost_waiter isn't pending, that's a bug, because: - # - it's set only here in connection_lost() which is called only once; - # - it must never be canceled. - self.connection_lost_waiter.set_result(None) - - if True: # pragma: no cover - # Copied from asyncio.StreamReaderProtocol - if self.reader is not None: - if exc is None: - self.reader.feed_eof() - else: - self.reader.set_exception(exc) - - # Copied from asyncio.FlowControlMixin - # Wake up the writer if currently paused. - if not self._paused: - return - waiter = self._drain_waiter - if waiter is None: - return - self._drain_waiter = None - if waiter.done(): - return - if exc is None: - waiter.set_result(None) - else: - waiter.set_exception(exc) - - def pause_writing(self) -> None: # pragma: no cover - assert not self._paused - self._paused = True - - def resume_writing(self) -> None: # pragma: no cover - assert self._paused - self._paused = False - - waiter = self._drain_waiter - if waiter is not None: - self._drain_waiter = None - if not waiter.done(): - waiter.set_result(None) - - def data_received(self, data: bytes) -> None: - self.reader.feed_data(data) - - def eof_received(self) -> None: - """ - Close the transport after receiving EOF. - - The WebSocket protocol has its own closing handshake: endpoints close - the TCP or TLS connection after sending and receiving a close frame. - - As a consequence, they never need to write after receiving EOF, so - there's no reason to keep the transport open by returning :obj:`True`. - - Besides, that doesn't work on TLS connections. - - """ - self.reader.feed_eof() - - -def broadcast( - websockets: Iterable[WebSocketCommonProtocol], - message: Data, - raise_exceptions: bool = False, -) -> None: - """ - Broadcast a message to several WebSocket connections. - - A string (:class:`str`) is sent as a Text_ frame. A bytestring or bytes-like - object (:class:`bytes`, :class:`bytearray`, or :class:`memoryview`) is sent - as a Binary_ frame. - - .. _Text: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.6 - .. _Binary: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.6 - - :func:`broadcast` pushes the message synchronously to all connections even - if their write buffers are overflowing. There's no backpressure. - - If you broadcast messages faster than a connection can handle them, messages - will pile up in its write buffer until the connection times out. Keep - ``ping_interval`` and ``ping_timeout`` low to prevent excessive memory usage - from slow connections. - - Unlike :meth:`~websockets.server.WebSocketServerProtocol.send`, - :func:`broadcast` doesn't support sending fragmented messages. Indeed, - fragmentation is useful for sending large messages without buffering them in - memory, while :func:`broadcast` buffers one copy per connection as fast as - possible. - - :func:`broadcast` skips connections that aren't open in order to avoid - errors on connections where the closing handshake is in progress. - - :func:`broadcast` ignores failures to write the message on some connections. - It continues writing to other connections. On Python 3.11 and above, you - may set ``raise_exceptions`` to :obj:`True` to record failures and raise all - exceptions in a :pep:`654` :exc:`ExceptionGroup`. - - Args: - websockets: WebSocket connections to which the message will be sent. - message: Message to send. - raise_exceptions: Whether to raise an exception in case of failures. - - Raises: - TypeError: If ``message`` doesn't have a supported type. - - """ - if not isinstance(message, (str, bytes, bytearray, memoryview)): - raise TypeError("data must be str or bytes-like") - - if raise_exceptions: - if sys.version_info[:2] < (3, 11): # pragma: no cover - raise ValueError("raise_exceptions requires at least Python 3.11") - exceptions = [] - - opcode, data = prepare_data(message) - - for websocket in websockets: - if websocket.state is not State.OPEN: - continue - - if websocket._fragmented_message_waiter is not None: - if raise_exceptions: - exception = RuntimeError("sending a fragmented message") - exceptions.append(exception) - else: - websocket.logger.warning( - "skipped broadcast: sending a fragmented message", - ) - - try: - websocket.write_frame_sync(True, opcode, data) - except Exception as write_exception: - if raise_exceptions: - exception = RuntimeError("failed to write message") - exception.__cause__ = write_exception - exceptions.append(exception) - else: - websocket.logger.warning( - "skipped broadcast: failed to write message", - exc_info=True, - ) - - if raise_exceptions: - raise ExceptionGroup("skipped broadcast", exceptions) diff --git a/venv/lib/python3.11/site-packages/websockets/legacy/server.py b/venv/lib/python3.11/site-packages/websockets/legacy/server.py deleted file mode 100644 index 7c24dd7..0000000 --- a/venv/lib/python3.11/site-packages/websockets/legacy/server.py +++ /dev/null @@ -1,1185 +0,0 @@ -from __future__ import annotations - -import asyncio -import email.utils -import functools -import http -import inspect -import logging -import socket -import warnings -from types import TracebackType -from typing import ( - Any, - Awaitable, - Callable, - Generator, - Iterable, - List, - Optional, - Sequence, - Set, - Tuple, - Type, - Union, - cast, -) - -from ..datastructures import Headers, HeadersLike, MultipleValuesError -from ..exceptions import ( - AbortHandshake, - InvalidHandshake, - InvalidHeader, - InvalidMessage, - InvalidOrigin, - InvalidUpgrade, - NegotiationError, -) -from ..extensions import Extension, ServerExtensionFactory -from ..extensions.permessage_deflate import enable_server_permessage_deflate -from ..headers import ( - build_extension, - parse_extension, - parse_subprotocol, - validate_subprotocols, -) -from ..http import USER_AGENT -from ..protocol import State -from ..typing import ExtensionHeader, LoggerLike, Origin, StatusLike, Subprotocol -from .compatibility import asyncio_timeout -from .handshake import build_response, check_request -from .http import read_request -from .protocol import WebSocketCommonProtocol - - -__all__ = ["serve", "unix_serve", "WebSocketServerProtocol", "WebSocketServer"] - - -HeadersLikeOrCallable = Union[HeadersLike, Callable[[str, Headers], HeadersLike]] - -HTTPResponse = Tuple[StatusLike, HeadersLike, bytes] - - -class WebSocketServerProtocol(WebSocketCommonProtocol): - """ - WebSocket server connection. - - :class:`WebSocketServerProtocol` provides :meth:`recv` and :meth:`send` - coroutines for receiving and sending messages. - - It supports asynchronous iteration to receive messages:: - - async for message in websocket: - await process(message) - - The iterator exits normally when the connection is closed with close code - 1000 (OK) or 1001 (going away) or without a close code. It raises - a :exc:`~websockets.exceptions.ConnectionClosedError` when the connection - is closed with any other code. - - You may customize the opening handshake in a subclass by - overriding :meth:`process_request` or :meth:`select_subprotocol`. - - Args: - ws_server: WebSocket server that created this connection. - - See :func:`serve` for the documentation of ``ws_handler``, ``logger``, ``origins``, - ``extensions``, ``subprotocols``, ``extra_headers``, and ``server_header``. - - See :class:`~websockets.legacy.protocol.WebSocketCommonProtocol` for the - documentation of ``ping_interval``, ``ping_timeout``, ``close_timeout``, - ``max_size``, ``max_queue``, ``read_limit``, and ``write_limit``. - - """ - - is_client = False - side = "server" - - def __init__( - self, - ws_handler: Union[ - Callable[[WebSocketServerProtocol], Awaitable[Any]], - Callable[[WebSocketServerProtocol, str], Awaitable[Any]], # deprecated - ], - ws_server: WebSocketServer, - *, - logger: Optional[LoggerLike] = None, - origins: Optional[Sequence[Optional[Origin]]] = None, - extensions: Optional[Sequence[ServerExtensionFactory]] = None, - subprotocols: Optional[Sequence[Subprotocol]] = None, - extra_headers: Optional[HeadersLikeOrCallable] = None, - server_header: Optional[str] = USER_AGENT, - process_request: Optional[ - Callable[[str, Headers], Awaitable[Optional[HTTPResponse]]] - ] = None, - select_subprotocol: Optional[ - Callable[[Sequence[Subprotocol], Sequence[Subprotocol]], Subprotocol] - ] = None, - open_timeout: Optional[float] = 10, - **kwargs: Any, - ) -> None: - if logger is None: - logger = logging.getLogger("websockets.server") - super().__init__(logger=logger, **kwargs) - # For backwards compatibility with 6.0 or earlier. - if origins is not None and "" in origins: - warnings.warn("use None instead of '' in origins", DeprecationWarning) - origins = [None if origin == "" else origin for origin in origins] - # For backwards compatibility with 10.0 or earlier. Done here in - # addition to serve to trigger the deprecation warning on direct - # use of WebSocketServerProtocol. - self.ws_handler = remove_path_argument(ws_handler) - self.ws_server = ws_server - self.origins = origins - self.available_extensions = extensions - self.available_subprotocols = subprotocols - self.extra_headers = extra_headers - self.server_header = server_header - self._process_request = process_request - self._select_subprotocol = select_subprotocol - self.open_timeout = open_timeout - - def connection_made(self, transport: asyncio.BaseTransport) -> None: - """ - Register connection and initialize a task to handle it. - - """ - super().connection_made(transport) - # Register the connection with the server before creating the handler - # task. Registering at the beginning of the handler coroutine would - # create a race condition between the creation of the task, which - # schedules its execution, and the moment the handler starts running. - self.ws_server.register(self) - self.handler_task = self.loop.create_task(self.handler()) - - async def handler(self) -> None: - """ - Handle the lifecycle of a WebSocket connection. - - Since this method doesn't have a caller able to handle exceptions, it - attempts to log relevant ones and guarantees that the TCP connection is - closed before exiting. - - """ - try: - try: - async with asyncio_timeout(self.open_timeout): - await self.handshake( - origins=self.origins, - available_extensions=self.available_extensions, - available_subprotocols=self.available_subprotocols, - extra_headers=self.extra_headers, - ) - except asyncio.TimeoutError: # pragma: no cover - raise - except ConnectionError: - raise - except Exception as exc: - if isinstance(exc, AbortHandshake): - status, headers, body = exc.status, exc.headers, exc.body - elif isinstance(exc, InvalidOrigin): - if self.debug: - self.logger.debug("! invalid origin", exc_info=True) - status, headers, body = ( - http.HTTPStatus.FORBIDDEN, - Headers(), - f"Failed to open a WebSocket connection: {exc}.\n".encode(), - ) - elif isinstance(exc, InvalidUpgrade): - if self.debug: - self.logger.debug("! invalid upgrade", exc_info=True) - status, headers, body = ( - http.HTTPStatus.UPGRADE_REQUIRED, - Headers([("Upgrade", "websocket")]), - ( - f"Failed to open a WebSocket connection: {exc}.\n" - f"\n" - f"You cannot access a WebSocket server directly " - f"with a browser. You need a WebSocket client.\n" - ).encode(), - ) - elif isinstance(exc, InvalidHandshake): - if self.debug: - self.logger.debug("! invalid handshake", exc_info=True) - status, headers, body = ( - http.HTTPStatus.BAD_REQUEST, - Headers(), - f"Failed to open a WebSocket connection: {exc}.\n".encode(), - ) - else: - self.logger.error("opening handshake failed", exc_info=True) - status, headers, body = ( - http.HTTPStatus.INTERNAL_SERVER_ERROR, - Headers(), - ( - b"Failed to open a WebSocket connection.\n" - b"See server log for more information.\n" - ), - ) - - headers.setdefault("Date", email.utils.formatdate(usegmt=True)) - if self.server_header is not None: - headers.setdefault("Server", self.server_header) - - headers.setdefault("Content-Length", str(len(body))) - headers.setdefault("Content-Type", "text/plain") - headers.setdefault("Connection", "close") - - self.write_http_response(status, headers, body) - self.logger.info( - "connection rejected (%d %s)", status.value, status.phrase - ) - await self.close_transport() - return - - try: - await self.ws_handler(self) - except Exception: - self.logger.error("connection handler failed", exc_info=True) - if not self.closed: - self.fail_connection(1011) - raise - - try: - await self.close() - except ConnectionError: - raise - except Exception: - self.logger.error("closing handshake failed", exc_info=True) - raise - - except Exception: - # Last-ditch attempt to avoid leaking connections on errors. - try: - self.transport.close() - except Exception: # pragma: no cover - pass - - finally: - # Unregister the connection with the server when the handler task - # terminates. Registration is tied to the lifecycle of the handler - # task because the server waits for tasks attached to registered - # connections before terminating. - self.ws_server.unregister(self) - self.logger.info("connection closed") - - async def read_http_request(self) -> Tuple[str, Headers]: - """ - Read request line and headers from the HTTP request. - - If the request contains a body, it may be read from ``self.reader`` - after this coroutine returns. - - Raises: - InvalidMessage: if the HTTP message is malformed or isn't an - HTTP/1.1 GET request. - - """ - try: - path, headers = await read_request(self.reader) - except asyncio.CancelledError: # pragma: no cover - raise - except Exception as exc: - raise InvalidMessage("did not receive a valid HTTP request") from exc - - if self.debug: - self.logger.debug("< GET %s HTTP/1.1", path) - for key, value in headers.raw_items(): - self.logger.debug("< %s: %s", key, value) - - self.path = path - self.request_headers = headers - - return path, headers - - def write_http_response( - self, status: http.HTTPStatus, headers: Headers, body: Optional[bytes] = None - ) -> None: - """ - Write status line and headers to the HTTP response. - - This coroutine is also able to write a response body. - - """ - self.response_headers = headers - - if self.debug: - self.logger.debug("> HTTP/1.1 %d %s", status.value, status.phrase) - for key, value in headers.raw_items(): - self.logger.debug("> %s: %s", key, value) - if body is not None: - self.logger.debug("> [body] (%d bytes)", len(body)) - - # Since the status line and headers only contain ASCII characters, - # we can keep this simple. - response = f"HTTP/1.1 {status.value} {status.phrase}\r\n" - response += str(headers) - - self.transport.write(response.encode()) - - if body is not None: - self.transport.write(body) - - async def process_request( - self, path: str, request_headers: Headers - ) -> Optional[HTTPResponse]: - """ - Intercept the HTTP request and return an HTTP response if appropriate. - - You may override this method in a :class:`WebSocketServerProtocol` - subclass, for example: - - * to return an HTTP 200 OK response on a given path; then a load - balancer can use this path for a health check; - * to authenticate the request and return an HTTP 401 Unauthorized or an - HTTP 403 Forbidden when authentication fails. - - You may also override this method with the ``process_request`` - argument of :func:`serve` and :class:`WebSocketServerProtocol`. This - is equivalent, except ``process_request`` won't have access to the - protocol instance, so it can't store information for later use. - - :meth:`process_request` is expected to complete quickly. If it may run - for a long time, then it should await :meth:`wait_closed` and exit if - :meth:`wait_closed` completes, or else it could prevent the server - from shutting down. - - Args: - path: request path, including optional query string. - request_headers: request headers. - - Returns: - Optional[Tuple[StatusLike, HeadersLike, bytes]]: :obj:`None` - to continue the WebSocket handshake normally. - - An HTTP response, represented by a 3-uple of the response status, - headers, and body, to abort the WebSocket handshake and return - that HTTP response instead. - - """ - if self._process_request is not None: - response = self._process_request(path, request_headers) - if isinstance(response, Awaitable): - return await response - else: - # For backwards compatibility with 7.0. - warnings.warn( - "declare process_request as a coroutine", DeprecationWarning - ) - return response - return None - - @staticmethod - def process_origin( - headers: Headers, origins: Optional[Sequence[Optional[Origin]]] = None - ) -> Optional[Origin]: - """ - Handle the Origin HTTP request header. - - Args: - headers: request headers. - origins: optional list of acceptable origins. - - Raises: - InvalidOrigin: if the origin isn't acceptable. - - """ - # "The user agent MUST NOT include more than one Origin header field" - # per https://www.rfc-editor.org/rfc/rfc6454.html#section-7.3. - try: - origin = cast(Optional[Origin], headers.get("Origin")) - except MultipleValuesError as exc: - raise InvalidHeader("Origin", "more than one Origin header found") from exc - if origins is not None: - if origin not in origins: - raise InvalidOrigin(origin) - return origin - - @staticmethod - def process_extensions( - headers: Headers, - available_extensions: Optional[Sequence[ServerExtensionFactory]], - ) -> Tuple[Optional[str], List[Extension]]: - """ - Handle the Sec-WebSocket-Extensions HTTP request header. - - Accept or reject each extension proposed in the client request. - Negotiate parameters for accepted extensions. - - Return the Sec-WebSocket-Extensions HTTP response header and the list - of accepted extensions. - - :rfc:`6455` leaves the rules up to the specification of each - :extension. - - To provide this level of flexibility, for each extension proposed by - the client, we check for a match with each extension available in the - server configuration. If no match is found, the extension is ignored. - - If several variants of the same extension are proposed by the client, - it may be accepted several times, which won't make sense in general. - Extensions must implement their own requirements. For this purpose, - the list of previously accepted extensions is provided. - - This process doesn't allow the server to reorder extensions. It can - only select a subset of the extensions proposed by the client. - - Other requirements, for example related to mandatory extensions or the - order of extensions, may be implemented by overriding this method. - - Args: - headers: request headers. - extensions: optional list of supported extensions. - - Raises: - InvalidHandshake: to abort the handshake with an HTTP 400 error. - - """ - response_header_value: Optional[str] = None - - extension_headers: List[ExtensionHeader] = [] - accepted_extensions: List[Extension] = [] - - header_values = headers.get_all("Sec-WebSocket-Extensions") - - if header_values and available_extensions: - parsed_header_values: List[ExtensionHeader] = sum( - [parse_extension(header_value) for header_value in header_values], [] - ) - - for name, request_params in parsed_header_values: - for ext_factory in available_extensions: - # Skip non-matching extensions based on their name. - if ext_factory.name != name: - continue - - # Skip non-matching extensions based on their params. - try: - response_params, extension = ext_factory.process_request_params( - request_params, accepted_extensions - ) - except NegotiationError: - continue - - # Add matching extension to the final list. - extension_headers.append((name, response_params)) - accepted_extensions.append(extension) - - # Break out of the loop once we have a match. - break - - # If we didn't break from the loop, no extension in our list - # matched what the client sent. The extension is declined. - - # Serialize extension header. - if extension_headers: - response_header_value = build_extension(extension_headers) - - return response_header_value, accepted_extensions - - # Not @staticmethod because it calls self.select_subprotocol() - def process_subprotocol( - self, headers: Headers, available_subprotocols: Optional[Sequence[Subprotocol]] - ) -> Optional[Subprotocol]: - """ - Handle the Sec-WebSocket-Protocol HTTP request header. - - Return Sec-WebSocket-Protocol HTTP response header, which is the same - as the selected subprotocol. - - Args: - headers: request headers. - available_subprotocols: optional list of supported subprotocols. - - Raises: - InvalidHandshake: to abort the handshake with an HTTP 400 error. - - """ - subprotocol: Optional[Subprotocol] = None - - header_values = headers.get_all("Sec-WebSocket-Protocol") - - if header_values and available_subprotocols: - parsed_header_values: List[Subprotocol] = sum( - [parse_subprotocol(header_value) for header_value in header_values], [] - ) - - subprotocol = self.select_subprotocol( - parsed_header_values, available_subprotocols - ) - - return subprotocol - - def select_subprotocol( - self, - client_subprotocols: Sequence[Subprotocol], - server_subprotocols: Sequence[Subprotocol], - ) -> Optional[Subprotocol]: - """ - Pick a subprotocol among those supported by the client and the server. - - If several subprotocols are available, select the preferred subprotocol - by giving equal weight to the preferences of the client and the server. - - If no subprotocol is available, proceed without a subprotocol. - - You may provide a ``select_subprotocol`` argument to :func:`serve` or - :class:`WebSocketServerProtocol` to override this logic. For example, - you could reject the handshake if the client doesn't support a - particular subprotocol, rather than accept the handshake without that - subprotocol. - - Args: - client_subprotocols: list of subprotocols offered by the client. - server_subprotocols: list of subprotocols available on the server. - - Returns: - Optional[Subprotocol]: Selected subprotocol, if a common subprotocol - was found. - - :obj:`None` to continue without a subprotocol. - - """ - if self._select_subprotocol is not None: - return self._select_subprotocol(client_subprotocols, server_subprotocols) - - subprotocols = set(client_subprotocols) & set(server_subprotocols) - if not subprotocols: - return None - return sorted( - subprotocols, - key=lambda p: client_subprotocols.index(p) + server_subprotocols.index(p), - )[0] - - async def handshake( - self, - origins: Optional[Sequence[Optional[Origin]]] = None, - available_extensions: Optional[Sequence[ServerExtensionFactory]] = None, - available_subprotocols: Optional[Sequence[Subprotocol]] = None, - extra_headers: Optional[HeadersLikeOrCallable] = None, - ) -> str: - """ - Perform the server side of the opening handshake. - - Args: - origins: list of acceptable values of the Origin HTTP header; - include :obj:`None` if the lack of an origin is acceptable. - extensions: list of supported extensions, in order in which they - should be tried. - subprotocols: list of supported subprotocols, in order of - decreasing preference. - extra_headers: arbitrary HTTP headers to add to the response when - the handshake succeeds. - - Returns: - str: path of the URI of the request. - - Raises: - InvalidHandshake: if the handshake fails. - - """ - path, request_headers = await self.read_http_request() - - # Hook for customizing request handling, for example checking - # authentication or treating some paths as plain HTTP endpoints. - early_response_awaitable = self.process_request(path, request_headers) - if isinstance(early_response_awaitable, Awaitable): - early_response = await early_response_awaitable - else: - # For backwards compatibility with 7.0. - warnings.warn("declare process_request as a coroutine", DeprecationWarning) - early_response = early_response_awaitable - - # The connection may drop while process_request is running. - if self.state is State.CLOSED: - # This subclass of ConnectionError is silently ignored in handler(). - raise BrokenPipeError("connection closed during opening handshake") - - # Change the response to a 503 error if the server is shutting down. - if not self.ws_server.is_serving(): - early_response = ( - http.HTTPStatus.SERVICE_UNAVAILABLE, - [], - b"Server is shutting down.\n", - ) - - if early_response is not None: - raise AbortHandshake(*early_response) - - key = check_request(request_headers) - - self.origin = self.process_origin(request_headers, origins) - - extensions_header, self.extensions = self.process_extensions( - request_headers, available_extensions - ) - - protocol_header = self.subprotocol = self.process_subprotocol( - request_headers, available_subprotocols - ) - - response_headers = Headers() - - build_response(response_headers, key) - - if extensions_header is not None: - response_headers["Sec-WebSocket-Extensions"] = extensions_header - - if protocol_header is not None: - response_headers["Sec-WebSocket-Protocol"] = protocol_header - - if callable(extra_headers): - extra_headers = extra_headers(path, self.request_headers) - if extra_headers is not None: - response_headers.update(extra_headers) - - response_headers.setdefault("Date", email.utils.formatdate(usegmt=True)) - if self.server_header is not None: - response_headers.setdefault("Server", self.server_header) - - self.write_http_response(http.HTTPStatus.SWITCHING_PROTOCOLS, response_headers) - - self.logger.info("connection open") - - self.connection_open() - - return path - - -class WebSocketServer: - """ - WebSocket server returned by :func:`serve`. - - This class provides the same interface as :class:`~asyncio.Server`, - notably the :meth:`~asyncio.Server.close` - and :meth:`~asyncio.Server.wait_closed` methods. - - It keeps track of WebSocket connections in order to close them properly - when shutting down. - - Args: - logger: Logger for this server. - It defaults to ``logging.getLogger("websockets.server")``. - See the :doc:`logging guide <../../topics/logging>` for details. - - """ - - def __init__(self, logger: Optional[LoggerLike] = None): - if logger is None: - logger = logging.getLogger("websockets.server") - self.logger = logger - - # Keep track of active connections. - self.websockets: Set[WebSocketServerProtocol] = set() - - # Task responsible for closing the server and terminating connections. - self.close_task: Optional[asyncio.Task[None]] = None - - # Completed when the server is closed and connections are terminated. - self.closed_waiter: asyncio.Future[None] - - def wrap(self, server: asyncio.base_events.Server) -> None: - """ - Attach to a given :class:`~asyncio.Server`. - - Since :meth:`~asyncio.loop.create_server` doesn't support injecting a - custom ``Server`` class, the easiest solution that doesn't rely on - private :mod:`asyncio` APIs is to: - - - instantiate a :class:`WebSocketServer` - - give the protocol factory a reference to that instance - - call :meth:`~asyncio.loop.create_server` with the factory - - attach the resulting :class:`~asyncio.Server` with this method - - """ - self.server = server - for sock in server.sockets: - if sock.family == socket.AF_INET: - name = "%s:%d" % sock.getsockname() - elif sock.family == socket.AF_INET6: - name = "[%s]:%d" % sock.getsockname()[:2] - elif sock.family == socket.AF_UNIX: - name = sock.getsockname() - # In the unlikely event that someone runs websockets over a - # protocol other than IP or Unix sockets, avoid crashing. - else: # pragma: no cover - name = str(sock.getsockname()) - self.logger.info("server listening on %s", name) - - # Initialized here because we need a reference to the event loop. - # This should be moved back to __init__ when dropping Python < 3.10. - self.closed_waiter = server.get_loop().create_future() - - def register(self, protocol: WebSocketServerProtocol) -> None: - """ - Register a connection with this server. - - """ - self.websockets.add(protocol) - - def unregister(self, protocol: WebSocketServerProtocol) -> None: - """ - Unregister a connection with this server. - - """ - self.websockets.remove(protocol) - - def close(self, close_connections: bool = True) -> None: - """ - Close the server. - - * Close the underlying :class:`~asyncio.Server`. - * When ``close_connections`` is :obj:`True`, which is the default, - close existing connections. Specifically: - - * Reject opening WebSocket connections with an HTTP 503 (service - unavailable) error. This happens when the server accepted the TCP - connection but didn't complete the opening handshake before closing. - * Close open WebSocket connections with close code 1001 (going away). - - * Wait until all connection handlers terminate. - - :meth:`close` is idempotent. - - """ - if self.close_task is None: - self.close_task = self.get_loop().create_task( - self._close(close_connections) - ) - - async def _close(self, close_connections: bool) -> None: - """ - Implementation of :meth:`close`. - - This calls :meth:`~asyncio.Server.close` on the underlying - :class:`~asyncio.Server` object to stop accepting new connections and - then closes open connections with close code 1001. - - """ - self.logger.info("server closing") - - # Stop accepting new connections. - self.server.close() - - # Wait until all accepted connections reach connection_made() and call - # register(). See https://bugs.python.org/issue34852 for details. - await asyncio.sleep(0) - - if close_connections: - # Close OPEN connections with close code 1001. After server.close(), - # handshake() closes OPENING connections with an HTTP 503 error. - close_tasks = [ - asyncio.create_task(websocket.close(1001)) - for websocket in self.websockets - if websocket.state is not State.CONNECTING - ] - # asyncio.wait doesn't accept an empty first argument. - if close_tasks: - await asyncio.wait(close_tasks) - - # Wait until all TCP connections are closed. - await self.server.wait_closed() - - # Wait until all connection handlers terminate. - # asyncio.wait doesn't accept an empty first argument. - if self.websockets: - await asyncio.wait( - [websocket.handler_task for websocket in self.websockets] - ) - - # Tell wait_closed() to return. - self.closed_waiter.set_result(None) - - self.logger.info("server closed") - - async def wait_closed(self) -> None: - """ - Wait until the server is closed. - - When :meth:`wait_closed` returns, all TCP connections are closed and - all connection handlers have returned. - - To ensure a fast shutdown, a connection handler should always be - awaiting at least one of: - - * :meth:`~WebSocketServerProtocol.recv`: when the connection is closed, - it raises :exc:`~websockets.exceptions.ConnectionClosedOK`; - * :meth:`~WebSocketServerProtocol.wait_closed`: when the connection is - closed, it returns. - - Then the connection handler is immediately notified of the shutdown; - it can clean up and exit. - - """ - await asyncio.shield(self.closed_waiter) - - def get_loop(self) -> asyncio.AbstractEventLoop: - """ - See :meth:`asyncio.Server.get_loop`. - - """ - return self.server.get_loop() - - def is_serving(self) -> bool: - """ - See :meth:`asyncio.Server.is_serving`. - - """ - return self.server.is_serving() - - async def start_serving(self) -> None: # pragma: no cover - """ - See :meth:`asyncio.Server.start_serving`. - - Typical use:: - - server = await serve(..., start_serving=False) - # perform additional setup here... - # ... then start the server - await server.start_serving() - - """ - await self.server.start_serving() - - async def serve_forever(self) -> None: # pragma: no cover - """ - See :meth:`asyncio.Server.serve_forever`. - - Typical use:: - - server = await serve(...) - # this coroutine doesn't return - # canceling it stops the server - await server.serve_forever() - - This is an alternative to using :func:`serve` as an asynchronous context - manager. Shutdown is triggered by canceling :meth:`serve_forever` - instead of exiting a :func:`serve` context. - - """ - await self.server.serve_forever() - - @property - def sockets(self) -> Iterable[socket.socket]: - """ - See :attr:`asyncio.Server.sockets`. - - """ - return self.server.sockets - - async def __aenter__(self) -> WebSocketServer: # pragma: no cover - return self - - async def __aexit__( - self, - exc_type: Optional[Type[BaseException]], - exc_value: Optional[BaseException], - traceback: Optional[TracebackType], - ) -> None: # pragma: no cover - self.close() - await self.wait_closed() - - -class Serve: - """ - Start a WebSocket server listening on ``host`` and ``port``. - - Whenever a client connects, the server creates a - :class:`WebSocketServerProtocol`, performs the opening handshake, and - delegates to the connection handler, ``ws_handler``. - - The handler receives the :class:`WebSocketServerProtocol` and uses it to - send and receive messages. - - Once the handler completes, either normally or with an exception, the - server performs the closing handshake and closes the connection. - - Awaiting :func:`serve` yields a :class:`WebSocketServer`. This object - provides a :meth:`~WebSocketServer.close` method to shut down the server:: - - stop = asyncio.Future() # set this future to exit the server - - server = await serve(...) - await stop - await server.close() - - :func:`serve` can be used as an asynchronous context manager. Then, the - server is shut down automatically when exiting the context:: - - stop = asyncio.Future() # set this future to exit the server - - async with serve(...): - await stop - - Args: - ws_handler: Connection handler. It receives the WebSocket connection, - which is a :class:`WebSocketServerProtocol`, in argument. - host: Network interfaces the server binds to. - See :meth:`~asyncio.loop.create_server` for details. - port: TCP port the server listens on. - See :meth:`~asyncio.loop.create_server` for details. - create_protocol: Factory for the :class:`asyncio.Protocol` managing - the connection. It defaults to :class:`WebSocketServerProtocol`. - Set it to a wrapper or a subclass to customize connection handling. - logger: Logger for this server. - It defaults to ``logging.getLogger("websockets.server")``. - See the :doc:`logging guide <../../topics/logging>` for details. - compression: The "permessage-deflate" extension is enabled by default. - Set ``compression`` to :obj:`None` to disable it. See the - :doc:`compression guide <../../topics/compression>` for details. - origins: Acceptable values of the ``Origin`` header, for defending - against Cross-Site WebSocket Hijacking attacks. Include :obj:`None` - in the list if the lack of an origin is acceptable. - extensions: List of supported extensions, in order in which they - should be negotiated and run. - subprotocols: List of supported subprotocols, in order of decreasing - preference. - extra_headers (Union[HeadersLike, Callable[[str, Headers], HeadersLike]]): - Arbitrary HTTP headers to add to the response. This can be - a :data:`~websockets.datastructures.HeadersLike` or a callable - taking the request path and headers in arguments and returning - a :data:`~websockets.datastructures.HeadersLike`. - server_header: Value of the ``Server`` response header. - It defaults to ``"Python/x.y.z websockets/X.Y"``. - Setting it to :obj:`None` removes the header. - process_request (Optional[Callable[[str, Headers], \ - Awaitable[Optional[Tuple[StatusLike, HeadersLike, bytes]]]]]): - Intercept HTTP request before the opening handshake. - See :meth:`~WebSocketServerProtocol.process_request` for details. - select_subprotocol: Select a subprotocol supported by the client. - See :meth:`~WebSocketServerProtocol.select_subprotocol` for details. - open_timeout: Timeout for opening connections in seconds. - :obj:`None` disables the timeout. - - See :class:`~websockets.legacy.protocol.WebSocketCommonProtocol` for the - documentation of ``ping_interval``, ``ping_timeout``, ``close_timeout``, - ``max_size``, ``max_queue``, ``read_limit``, and ``write_limit``. - - Any other keyword arguments are passed the event loop's - :meth:`~asyncio.loop.create_server` method. - - For example: - - * You can set ``ssl`` to a :class:`~ssl.SSLContext` to enable TLS. - - * You can set ``sock`` to a :obj:`~socket.socket` that you created - outside of websockets. - - Returns: - WebSocketServer: WebSocket server. - - """ - - def __init__( - self, - ws_handler: Union[ - Callable[[WebSocketServerProtocol], Awaitable[Any]], - Callable[[WebSocketServerProtocol, str], Awaitable[Any]], # deprecated - ], - host: Optional[Union[str, Sequence[str]]] = None, - port: Optional[int] = None, - *, - create_protocol: Optional[Callable[..., WebSocketServerProtocol]] = None, - logger: Optional[LoggerLike] = None, - compression: Optional[str] = "deflate", - origins: Optional[Sequence[Optional[Origin]]] = None, - extensions: Optional[Sequence[ServerExtensionFactory]] = None, - subprotocols: Optional[Sequence[Subprotocol]] = None, - extra_headers: Optional[HeadersLikeOrCallable] = None, - server_header: Optional[str] = USER_AGENT, - process_request: Optional[ - Callable[[str, Headers], Awaitable[Optional[HTTPResponse]]] - ] = None, - select_subprotocol: Optional[ - Callable[[Sequence[Subprotocol], Sequence[Subprotocol]], Subprotocol] - ] = None, - open_timeout: Optional[float] = 10, - ping_interval: Optional[float] = 20, - ping_timeout: Optional[float] = 20, - close_timeout: Optional[float] = None, - max_size: Optional[int] = 2**20, - max_queue: Optional[int] = 2**5, - read_limit: int = 2**16, - write_limit: int = 2**16, - **kwargs: Any, - ) -> None: - # Backwards compatibility: close_timeout used to be called timeout. - timeout: Optional[float] = kwargs.pop("timeout", None) - if timeout is None: - timeout = 10 - else: - warnings.warn("rename timeout to close_timeout", DeprecationWarning) - # If both are specified, timeout is ignored. - if close_timeout is None: - close_timeout = timeout - - # Backwards compatibility: create_protocol used to be called klass. - klass: Optional[Type[WebSocketServerProtocol]] = kwargs.pop("klass", None) - if klass is None: - klass = WebSocketServerProtocol - else: - warnings.warn("rename klass to create_protocol", DeprecationWarning) - # If both are specified, klass is ignored. - if create_protocol is None: - create_protocol = klass - - # Backwards compatibility: recv() used to return None on closed connections - legacy_recv: bool = kwargs.pop("legacy_recv", False) - - # Backwards compatibility: the loop parameter used to be supported. - _loop: Optional[asyncio.AbstractEventLoop] = kwargs.pop("loop", None) - if _loop is None: - loop = asyncio.get_event_loop() - else: - loop = _loop - warnings.warn("remove loop argument", DeprecationWarning) - - ws_server = WebSocketServer(logger=logger) - - secure = kwargs.get("ssl") is not None - - if compression == "deflate": - extensions = enable_server_permessage_deflate(extensions) - elif compression is not None: - raise ValueError(f"unsupported compression: {compression}") - - if subprotocols is not None: - validate_subprotocols(subprotocols) - - factory = functools.partial( - create_protocol, - # For backwards compatibility with 10.0 or earlier. Done here in - # addition to WebSocketServerProtocol to trigger the deprecation - # warning once per serve() call rather than once per connection. - remove_path_argument(ws_handler), - ws_server, - host=host, - port=port, - secure=secure, - open_timeout=open_timeout, - ping_interval=ping_interval, - ping_timeout=ping_timeout, - close_timeout=close_timeout, - max_size=max_size, - max_queue=max_queue, - read_limit=read_limit, - write_limit=write_limit, - loop=_loop, - legacy_recv=legacy_recv, - origins=origins, - extensions=extensions, - subprotocols=subprotocols, - extra_headers=extra_headers, - server_header=server_header, - process_request=process_request, - select_subprotocol=select_subprotocol, - logger=logger, - ) - - if kwargs.pop("unix", False): - path: Optional[str] = kwargs.pop("path", None) - # unix_serve(path) must not specify host and port parameters. - assert host is None and port is None - create_server = functools.partial( - loop.create_unix_server, factory, path, **kwargs - ) - else: - create_server = functools.partial( - loop.create_server, factory, host, port, **kwargs - ) - - # This is a coroutine function. - self._create_server = create_server - self.ws_server = ws_server - - # async with serve(...) - - async def __aenter__(self) -> WebSocketServer: - return await self - - async def __aexit__( - self, - exc_type: Optional[Type[BaseException]], - exc_value: Optional[BaseException], - traceback: Optional[TracebackType], - ) -> None: - self.ws_server.close() - await self.ws_server.wait_closed() - - # await serve(...) - - def __await__(self) -> Generator[Any, None, WebSocketServer]: - # Create a suitable iterator by calling __await__ on a coroutine. - return self.__await_impl__().__await__() - - async def __await_impl__(self) -> WebSocketServer: - server = await self._create_server() - self.ws_server.wrap(server) - return self.ws_server - - # yield from serve(...) - remove when dropping Python < 3.10 - - __iter__ = __await__ - - -serve = Serve - - -def unix_serve( - ws_handler: Union[ - Callable[[WebSocketServerProtocol], Awaitable[Any]], - Callable[[WebSocketServerProtocol, str], Awaitable[Any]], # deprecated - ], - path: Optional[str] = None, - **kwargs: Any, -) -> Serve: - """ - Start a WebSocket server listening on a Unix socket. - - This function is identical to :func:`serve`, except the ``host`` and - ``port`` arguments are replaced by ``path``. It is only available on Unix. - - Unrecognized keyword arguments are passed the event loop's - :meth:`~asyncio.loop.create_unix_server` method. - - It's useful for deploying a server behind a reverse proxy such as nginx. - - Args: - path: File system path to the Unix socket. - - """ - return serve(ws_handler, path=path, unix=True, **kwargs) - - -def remove_path_argument( - ws_handler: Union[ - Callable[[WebSocketServerProtocol], Awaitable[Any]], - Callable[[WebSocketServerProtocol, str], Awaitable[Any]], - ] -) -> Callable[[WebSocketServerProtocol], Awaitable[Any]]: - try: - inspect.signature(ws_handler).bind(None) - except TypeError: - try: - inspect.signature(ws_handler).bind(None, "") - except TypeError: # pragma: no cover - # ws_handler accepts neither one nor two arguments; leave it alone. - pass - else: - # ws_handler accepts two arguments; activate backwards compatibility. - - # Enable deprecation warning and announce deprecation in 11.0. - # warnings.warn("remove second argument of ws_handler", DeprecationWarning) - - async def _ws_handler(websocket: WebSocketServerProtocol) -> Any: - return await cast( - Callable[[WebSocketServerProtocol, str], Awaitable[Any]], - ws_handler, - )(websocket, websocket.path) - - return _ws_handler - - return cast( - Callable[[WebSocketServerProtocol], Awaitable[Any]], - ws_handler, - ) diff --git a/venv/lib/python3.11/site-packages/websockets/protocol.py b/venv/lib/python3.11/site-packages/websockets/protocol.py deleted file mode 100644 index 765e6b9..0000000 --- a/venv/lib/python3.11/site-packages/websockets/protocol.py +++ /dev/null @@ -1,708 +0,0 @@ -from __future__ import annotations - -import enum -import logging -import uuid -from typing import Generator, List, Optional, Type, Union - -from .exceptions import ( - ConnectionClosed, - ConnectionClosedError, - ConnectionClosedOK, - InvalidState, - PayloadTooBig, - ProtocolError, -) -from .extensions import Extension -from .frames import ( - OK_CLOSE_CODES, - OP_BINARY, - OP_CLOSE, - OP_CONT, - OP_PING, - OP_PONG, - OP_TEXT, - Close, - CloseCode, - Frame, -) -from .http11 import Request, Response -from .streams import StreamReader -from .typing import LoggerLike, Origin, Subprotocol - - -__all__ = [ - "Protocol", - "Side", - "State", - "SEND_EOF", -] - -Event = Union[Request, Response, Frame] -"""Events that :meth:`~Protocol.events_received` may return.""" - - -class Side(enum.IntEnum): - """A WebSocket connection is either a server or a client.""" - - SERVER, CLIENT = range(2) - - -SERVER = Side.SERVER -CLIENT = Side.CLIENT - - -class State(enum.IntEnum): - """A WebSocket connection is in one of these four states.""" - - CONNECTING, OPEN, CLOSING, CLOSED = range(4) - - -CONNECTING = State.CONNECTING -OPEN = State.OPEN -CLOSING = State.CLOSING -CLOSED = State.CLOSED - - -SEND_EOF = b"" -"""Sentinel signaling that the TCP connection must be half-closed.""" - - -class Protocol: - """ - Sans-I/O implementation of a WebSocket connection. - - Args: - side: :attr:`~Side.CLIENT` or :attr:`~Side.SERVER`. - state: initial state of the WebSocket connection. - max_size: maximum size of incoming messages in bytes; - :obj:`None` disables the limit. - logger: logger for this connection; depending on ``side``, - defaults to ``logging.getLogger("websockets.client")`` - or ``logging.getLogger("websockets.server")``; - see the :doc:`logging guide <../../topics/logging>` for details. - - """ - - def __init__( - self, - side: Side, - *, - state: State = OPEN, - max_size: Optional[int] = 2**20, - logger: Optional[LoggerLike] = None, - ) -> None: - # Unique identifier. For logs. - self.id: uuid.UUID = uuid.uuid4() - """Unique identifier of the connection. Useful in logs.""" - - # Logger or LoggerAdapter for this connection. - if logger is None: - logger = logging.getLogger(f"websockets.{side.name.lower()}") - self.logger: LoggerLike = logger - """Logger for this connection.""" - - # Track if DEBUG is enabled. Shortcut logging calls if it isn't. - self.debug = logger.isEnabledFor(logging.DEBUG) - - # Connection side. CLIENT or SERVER. - self.side = side - - # Connection state. Initially OPEN because subclasses handle CONNECTING. - self.state = state - - # Maximum size of incoming messages in bytes. - self.max_size = max_size - - # Current size of incoming message in bytes. Only set while reading a - # fragmented message i.e. a data frames with the FIN bit not set. - self.cur_size: Optional[int] = None - - # True while sending a fragmented message i.e. a data frames with the - # FIN bit not set. - self.expect_continuation_frame = False - - # WebSocket protocol parameters. - self.origin: Optional[Origin] = None - self.extensions: List[Extension] = [] - self.subprotocol: Optional[Subprotocol] = None - - # Close code and reason, set when a close frame is sent or received. - self.close_rcvd: Optional[Close] = None - self.close_sent: Optional[Close] = None - self.close_rcvd_then_sent: Optional[bool] = None - - # Track if an exception happened during the handshake. - self.handshake_exc: Optional[Exception] = None - """ - Exception to raise if the opening handshake failed. - - :obj:`None` if the opening handshake succeeded. - - """ - - # Track if send_eof() was called. - self.eof_sent = False - - # Parser state. - self.reader = StreamReader() - self.events: List[Event] = [] - self.writes: List[bytes] = [] - self.parser = self.parse() - next(self.parser) # start coroutine - self.parser_exc: Optional[Exception] = None - - @property - def state(self) -> State: - """ - WebSocket connection state. - - Defined in 4.1, 4.2, 7.1.3, and 7.1.4 of :rfc:`6455`. - - """ - return self._state - - @state.setter - def state(self, state: State) -> None: - if self.debug: - self.logger.debug("= connection is %s", state.name) - self._state = state - - @property - def close_code(self) -> Optional[int]: - """ - `WebSocket close code`_. - - .. _WebSocket close code: - https://www.rfc-editor.org/rfc/rfc6455.html#section-7.1.5 - - :obj:`None` if the connection isn't closed yet. - - """ - if self.state is not CLOSED: - return None - elif self.close_rcvd is None: - return CloseCode.ABNORMAL_CLOSURE - else: - return self.close_rcvd.code - - @property - def close_reason(self) -> Optional[str]: - """ - `WebSocket close reason`_. - - .. _WebSocket close reason: - https://www.rfc-editor.org/rfc/rfc6455.html#section-7.1.6 - - :obj:`None` if the connection isn't closed yet. - - """ - if self.state is not CLOSED: - return None - elif self.close_rcvd is None: - return "" - else: - return self.close_rcvd.reason - - @property - def close_exc(self) -> ConnectionClosed: - """ - Exception to raise when trying to interact with a closed connection. - - Don't raise this exception while the connection :attr:`state` - is :attr:`~websockets.protocol.State.CLOSING`; wait until - it's :attr:`~websockets.protocol.State.CLOSED`. - - Indeed, the exception includes the close code and reason, which are - known only once the connection is closed. - - Raises: - AssertionError: if the connection isn't closed yet. - - """ - assert self.state is CLOSED, "connection isn't closed yet" - exc_type: Type[ConnectionClosed] - if ( - self.close_rcvd is not None - and self.close_sent is not None - and self.close_rcvd.code in OK_CLOSE_CODES - and self.close_sent.code in OK_CLOSE_CODES - ): - exc_type = ConnectionClosedOK - else: - exc_type = ConnectionClosedError - exc: ConnectionClosed = exc_type( - self.close_rcvd, - self.close_sent, - self.close_rcvd_then_sent, - ) - # Chain to the exception raised in the parser, if any. - exc.__cause__ = self.parser_exc - return exc - - # Public methods for receiving data. - - def receive_data(self, data: bytes) -> None: - """ - Receive data from the network. - - After calling this method: - - - You must call :meth:`data_to_send` and send this data to the network. - - You should call :meth:`events_received` and process resulting events. - - Raises: - EOFError: if :meth:`receive_eof` was called earlier. - - """ - self.reader.feed_data(data) - next(self.parser) - - def receive_eof(self) -> None: - """ - Receive the end of the data stream from the network. - - After calling this method: - - - You must call :meth:`data_to_send` and send this data to the network; - it will return ``[b""]``, signaling the end of the stream, or ``[]``. - - You aren't expected to call :meth:`events_received`; it won't return - any new events. - - Raises: - EOFError: if :meth:`receive_eof` was called earlier. - - """ - self.reader.feed_eof() - next(self.parser) - - # Public methods for sending events. - - def send_continuation(self, data: bytes, fin: bool) -> None: - """ - Send a `Continuation frame`_. - - .. _Continuation frame: - https://datatracker.ietf.org/doc/html/rfc6455#section-5.6 - - Parameters: - data: payload containing the same kind of data - as the initial frame. - fin: FIN bit; set it to :obj:`True` if this is the last frame - of a fragmented message and to :obj:`False` otherwise. - - Raises: - ProtocolError: if a fragmented message isn't in progress. - - """ - if not self.expect_continuation_frame: - raise ProtocolError("unexpected continuation frame") - self.expect_continuation_frame = not fin - self.send_frame(Frame(OP_CONT, data, fin)) - - def send_text(self, data: bytes, fin: bool = True) -> None: - """ - Send a `Text frame`_. - - .. _Text frame: - https://datatracker.ietf.org/doc/html/rfc6455#section-5.6 - - Parameters: - data: payload containing text encoded with UTF-8. - fin: FIN bit; set it to :obj:`False` if this is the first frame of - a fragmented message. - - Raises: - ProtocolError: if a fragmented message is in progress. - - """ - if self.expect_continuation_frame: - raise ProtocolError("expected a continuation frame") - self.expect_continuation_frame = not fin - self.send_frame(Frame(OP_TEXT, data, fin)) - - def send_binary(self, data: bytes, fin: bool = True) -> None: - """ - Send a `Binary frame`_. - - .. _Binary frame: - https://datatracker.ietf.org/doc/html/rfc6455#section-5.6 - - Parameters: - data: payload containing arbitrary binary data. - fin: FIN bit; set it to :obj:`False` if this is the first frame of - a fragmented message. - - Raises: - ProtocolError: if a fragmented message is in progress. - - """ - if self.expect_continuation_frame: - raise ProtocolError("expected a continuation frame") - self.expect_continuation_frame = not fin - self.send_frame(Frame(OP_BINARY, data, fin)) - - def send_close(self, code: Optional[int] = None, reason: str = "") -> None: - """ - Send a `Close frame`_. - - .. _Close frame: - https://datatracker.ietf.org/doc/html/rfc6455#section-5.5.1 - - Parameters: - code: close code. - reason: close reason. - - Raises: - ProtocolError: if a fragmented message is being sent, if the code - isn't valid, or if a reason is provided without a code - - """ - if self.expect_continuation_frame: - raise ProtocolError("expected a continuation frame") - if code is None: - if reason != "": - raise ProtocolError("cannot send a reason without a code") - close = Close(CloseCode.NO_STATUS_RCVD, "") - data = b"" - else: - close = Close(code, reason) - data = close.serialize() - # send_frame() guarantees that self.state is OPEN at this point. - # 7.1.3. The WebSocket Closing Handshake is Started - self.send_frame(Frame(OP_CLOSE, data)) - self.close_sent = close - self.state = CLOSING - - def send_ping(self, data: bytes) -> None: - """ - Send a `Ping frame`_. - - .. _Ping frame: - https://datatracker.ietf.org/doc/html/rfc6455#section-5.5.2 - - Parameters: - data: payload containing arbitrary binary data. - - """ - self.send_frame(Frame(OP_PING, data)) - - def send_pong(self, data: bytes) -> None: - """ - Send a `Pong frame`_. - - .. _Pong frame: - https://datatracker.ietf.org/doc/html/rfc6455#section-5.5.3 - - Parameters: - data: payload containing arbitrary binary data. - - """ - self.send_frame(Frame(OP_PONG, data)) - - def fail(self, code: int, reason: str = "") -> None: - """ - `Fail the WebSocket connection`_. - - .. _Fail the WebSocket connection: - https://datatracker.ietf.org/doc/html/rfc6455#section-7.1.7 - - Parameters: - code: close code - reason: close reason - - Raises: - ProtocolError: if the code isn't valid. - """ - # 7.1.7. Fail the WebSocket Connection - - # Send a close frame when the state is OPEN (a close frame was already - # sent if it's CLOSING), except when failing the connection because - # of an error reading from or writing to the network. - if self.state is OPEN: - if code != CloseCode.ABNORMAL_CLOSURE: - close = Close(code, reason) - data = close.serialize() - self.send_frame(Frame(OP_CLOSE, data)) - self.close_sent = close - self.state = CLOSING - - # When failing the connection, a server closes the TCP connection - # without waiting for the client to complete the handshake, while a - # client waits for the server to close the TCP connection, possibly - # after sending a close frame that the client will ignore. - if self.side is SERVER and not self.eof_sent: - self.send_eof() - - # 7.1.7. Fail the WebSocket Connection "An endpoint MUST NOT continue - # to attempt to process data(including a responding Close frame) from - # the remote endpoint after being instructed to _Fail the WebSocket - # Connection_." - self.parser = self.discard() - next(self.parser) # start coroutine - - # Public method for getting incoming events after receiving data. - - def events_received(self) -> List[Event]: - """ - Fetch events generated from data received from the network. - - Call this method immediately after any of the ``receive_*()`` methods. - - Process resulting events, likely by passing them to the application. - - Returns: - List[Event]: Events read from the connection. - """ - events, self.events = self.events, [] - return events - - # Public method for getting outgoing data after receiving data or sending events. - - def data_to_send(self) -> List[bytes]: - """ - Obtain data to send to the network. - - Call this method immediately after any of the ``receive_*()``, - ``send_*()``, or :meth:`fail` methods. - - Write resulting data to the connection. - - The empty bytestring :data:`~websockets.protocol.SEND_EOF` signals - the end of the data stream. When you receive it, half-close the TCP - connection. - - Returns: - List[bytes]: Data to write to the connection. - - """ - writes, self.writes = self.writes, [] - return writes - - def close_expected(self) -> bool: - """ - Tell if the TCP connection is expected to close soon. - - Call this method immediately after any of the ``receive_*()``, - ``send_close()``, or :meth:`fail` methods. - - If it returns :obj:`True`, schedule closing the TCP connection after a - short timeout if the other side hasn't already closed it. - - Returns: - bool: Whether the TCP connection is expected to close soon. - - """ - # We expect a TCP close if and only if we sent a close frame: - # * Normal closure: once we send a close frame, we expect a TCP close: - # server waits for client to complete the TCP closing handshake; - # client waits for server to initiate the TCP closing handshake. - # * Abnormal closure: we always send a close frame and the same logic - # applies, except on EOFError where we don't send a close frame - # because we already received the TCP close, so we don't expect it. - # We already got a TCP Close if and only if the state is CLOSED. - return self.state is CLOSING or self.handshake_exc is not None - - # Private methods for receiving data. - - def parse(self) -> Generator[None, None, None]: - """ - Parse incoming data into frames. - - :meth:`receive_data` and :meth:`receive_eof` run this generator - coroutine until it needs more data or reaches EOF. - - :meth:`parse` never raises an exception. Instead, it sets the - :attr:`parser_exc` and yields control. - - """ - try: - while True: - if (yield from self.reader.at_eof()): - if self.debug: - self.logger.debug("< EOF") - # If the WebSocket connection is closed cleanly, with a - # closing handhshake, recv_frame() substitutes parse() - # with discard(). This branch is reached only when the - # connection isn't closed cleanly. - raise EOFError("unexpected end of stream") - - if self.max_size is None: - max_size = None - elif self.cur_size is None: - max_size = self.max_size - else: - max_size = self.max_size - self.cur_size - - # During a normal closure, execution ends here on the next - # iteration of the loop after receiving a close frame. At - # this point, recv_frame() replaced parse() by discard(). - frame = yield from Frame.parse( - self.reader.read_exact, - mask=self.side is SERVER, - max_size=max_size, - extensions=self.extensions, - ) - - if self.debug: - self.logger.debug("< %s", frame) - - self.recv_frame(frame) - - except ProtocolError as exc: - self.fail(CloseCode.PROTOCOL_ERROR, str(exc)) - self.parser_exc = exc - - except EOFError as exc: - self.fail(CloseCode.ABNORMAL_CLOSURE, str(exc)) - self.parser_exc = exc - - except UnicodeDecodeError as exc: - self.fail(CloseCode.INVALID_DATA, f"{exc.reason} at position {exc.start}") - self.parser_exc = exc - - except PayloadTooBig as exc: - self.fail(CloseCode.MESSAGE_TOO_BIG, str(exc)) - self.parser_exc = exc - - except Exception as exc: - self.logger.error("parser failed", exc_info=True) - # Don't include exception details, which may be security-sensitive. - self.fail(CloseCode.INTERNAL_ERROR) - self.parser_exc = exc - - # During an abnormal closure, execution ends here after catching an - # exception. At this point, fail() replaced parse() by discard(). - yield - raise AssertionError("parse() shouldn't step after error") - - def discard(self) -> Generator[None, None, None]: - """ - Discard incoming data. - - This coroutine replaces :meth:`parse`: - - - after receiving a close frame, during a normal closure (1.4); - - after sending a close frame, during an abnormal closure (7.1.7). - - """ - # The server close the TCP connection in the same circumstances where - # discard() replaces parse(). The client closes the connection later, - # after the server closes the connection or a timeout elapses. - # (The latter case cannot be handled in this Sans-I/O layer.) - assert (self.side is SERVER) == (self.eof_sent) - while not (yield from self.reader.at_eof()): - self.reader.discard() - if self.debug: - self.logger.debug("< EOF") - # A server closes the TCP connection immediately, while a client - # waits for the server to close the TCP connection. - if self.side is CLIENT: - self.send_eof() - self.state = CLOSED - # If discard() completes normally, execution ends here. - yield - # Once the reader reaches EOF, its feed_data/eof() methods raise an - # error, so our receive_data/eof() methods don't step the generator. - raise AssertionError("discard() shouldn't step after EOF") - - def recv_frame(self, frame: Frame) -> None: - """ - Process an incoming frame. - - """ - if frame.opcode is OP_TEXT or frame.opcode is OP_BINARY: - if self.cur_size is not None: - raise ProtocolError("expected a continuation frame") - if frame.fin: - self.cur_size = None - else: - self.cur_size = len(frame.data) - - elif frame.opcode is OP_CONT: - if self.cur_size is None: - raise ProtocolError("unexpected continuation frame") - if frame.fin: - self.cur_size = None - else: - self.cur_size += len(frame.data) - - elif frame.opcode is OP_PING: - # 5.5.2. Ping: "Upon receipt of a Ping frame, an endpoint MUST - # send a Pong frame in response" - pong_frame = Frame(OP_PONG, frame.data) - self.send_frame(pong_frame) - - elif frame.opcode is OP_PONG: - # 5.5.3 Pong: "A response to an unsolicited Pong frame is not - # expected." - pass - - elif frame.opcode is OP_CLOSE: - # 7.1.5. The WebSocket Connection Close Code - # 7.1.6. The WebSocket Connection Close Reason - self.close_rcvd = Close.parse(frame.data) - if self.state is CLOSING: - assert self.close_sent is not None - self.close_rcvd_then_sent = False - - if self.cur_size is not None: - raise ProtocolError("incomplete fragmented message") - - # 5.5.1 Close: "If an endpoint receives a Close frame and did - # not previously send a Close frame, the endpoint MUST send a - # Close frame in response. (When sending a Close frame in - # response, the endpoint typically echos the status code it - # received.)" - - if self.state is OPEN: - # Echo the original data instead of re-serializing it with - # Close.serialize() because that fails when the close frame - # is empty and Close.parse() synthesizes a 1005 close code. - # The rest is identical to send_close(). - self.send_frame(Frame(OP_CLOSE, frame.data)) - self.close_sent = self.close_rcvd - self.close_rcvd_then_sent = True - self.state = CLOSING - - # 7.1.2. Start the WebSocket Closing Handshake: "Once an - # endpoint has both sent and received a Close control frame, - # that endpoint SHOULD _Close the WebSocket Connection_" - - # A server closes the TCP connection immediately, while a client - # waits for the server to close the TCP connection. - if self.side is SERVER: - self.send_eof() - - # 1.4. Closing Handshake: "after receiving a control frame - # indicating the connection should be closed, a peer discards - # any further data received." - self.parser = self.discard() - next(self.parser) # start coroutine - - else: - # This can't happen because Frame.parse() validates opcodes. - raise AssertionError(f"unexpected opcode: {frame.opcode:02x}") - - self.events.append(frame) - - # Private methods for sending events. - - def send_frame(self, frame: Frame) -> None: - if self.state is not OPEN: - raise InvalidState( - f"cannot write to a WebSocket in the {self.state.name} state" - ) - - if self.debug: - self.logger.debug("> %s", frame) - self.writes.append( - frame.serialize(mask=self.side is CLIENT, extensions=self.extensions) - ) - - def send_eof(self) -> None: - assert not self.eof_sent - self.eof_sent = True - if self.debug: - self.logger.debug("> EOF") - self.writes.append(SEND_EOF) diff --git a/venv/lib/python3.11/site-packages/websockets/py.typed b/venv/lib/python3.11/site-packages/websockets/py.typed deleted file mode 100644 index e69de29..0000000 --- a/venv/lib/python3.11/site-packages/websockets/py.typed +++ /dev/null diff --git a/venv/lib/python3.11/site-packages/websockets/server.py b/venv/lib/python3.11/site-packages/websockets/server.py deleted file mode 100644 index 1916605..0000000 --- a/venv/lib/python3.11/site-packages/websockets/server.py +++ /dev/null @@ -1,580 +0,0 @@ -from __future__ import annotations - -import base64 -import binascii -import email.utils -import http -import warnings -from typing import Any, Callable, Generator, List, Optional, Sequence, Tuple, cast - -from .datastructures import Headers, MultipleValuesError -from .exceptions import ( - InvalidHandshake, - InvalidHeader, - InvalidHeaderValue, - InvalidOrigin, - InvalidStatus, - InvalidUpgrade, - NegotiationError, -) -from .extensions import Extension, ServerExtensionFactory -from .headers import ( - build_extension, - parse_connection, - parse_extension, - parse_subprotocol, - parse_upgrade, -) -from .http11 import Request, Response -from .protocol import CONNECTING, OPEN, SERVER, Protocol, State -from .typing import ( - ConnectionOption, - ExtensionHeader, - LoggerLike, - Origin, - StatusLike, - Subprotocol, - UpgradeProtocol, -) -from .utils import accept_key - - -# See #940 for why lazy_import isn't used here for backwards compatibility. -# See #1400 for why listing compatibility imports in __all__ helps PyCharm. -from .legacy.server import * # isort:skip # noqa: I001 -from .legacy.server import __all__ as legacy__all__ - - -__all__ = ["ServerProtocol"] + legacy__all__ - - -class ServerProtocol(Protocol): - """ - Sans-I/O implementation of a WebSocket server connection. - - Args: - origins: acceptable values of the ``Origin`` header; include - :obj:`None` in the list if the lack of an origin is acceptable. - This is useful for defending against Cross-Site WebSocket - Hijacking attacks. - extensions: list of supported extensions, in order in which they - should be tried. - subprotocols: list of supported subprotocols, in order of decreasing - preference. - select_subprotocol: Callback for selecting a subprotocol among - those supported by the client and the server. It has the same - signature as the :meth:`select_subprotocol` method, including a - :class:`ServerProtocol` instance as first argument. - state: initial state of the WebSocket connection. - max_size: maximum size of incoming messages in bytes; - :obj:`None` disables the limit. - logger: logger for this connection; - defaults to ``logging.getLogger("websockets.client")``; - see the :doc:`logging guide <../../topics/logging>` for details. - - """ - - def __init__( - self, - *, - origins: Optional[Sequence[Optional[Origin]]] = None, - extensions: Optional[Sequence[ServerExtensionFactory]] = None, - subprotocols: Optional[Sequence[Subprotocol]] = None, - select_subprotocol: Optional[ - Callable[ - [ServerProtocol, Sequence[Subprotocol]], - Optional[Subprotocol], - ] - ] = None, - state: State = CONNECTING, - max_size: Optional[int] = 2**20, - logger: Optional[LoggerLike] = None, - ): - super().__init__( - side=SERVER, - state=state, - max_size=max_size, - logger=logger, - ) - self.origins = origins - self.available_extensions = extensions - self.available_subprotocols = subprotocols - if select_subprotocol is not None: - # Bind select_subprotocol then shadow self.select_subprotocol. - # Use setattr to work around https://github.com/python/mypy/issues/2427. - setattr( - self, - "select_subprotocol", - select_subprotocol.__get__(self, self.__class__), - ) - - def accept(self, request: Request) -> Response: - """ - Create a handshake response to accept the connection. - - If the connection cannot be established, the handshake response - actually rejects the handshake. - - You must send the handshake response with :meth:`send_response`. - - You may modify it before sending it, for example to add HTTP headers. - - Args: - request: WebSocket handshake request event received from the client. - - Returns: - WebSocket handshake response event to send to the client. - - """ - try: - ( - accept_header, - extensions_header, - protocol_header, - ) = self.process_request(request) - except InvalidOrigin as exc: - request._exception = exc - self.handshake_exc = exc - if self.debug: - self.logger.debug("! invalid origin", exc_info=True) - return self.reject( - http.HTTPStatus.FORBIDDEN, - f"Failed to open a WebSocket connection: {exc}.\n", - ) - except InvalidUpgrade as exc: - request._exception = exc - self.handshake_exc = exc - if self.debug: - self.logger.debug("! invalid upgrade", exc_info=True) - response = self.reject( - http.HTTPStatus.UPGRADE_REQUIRED, - ( - f"Failed to open a WebSocket connection: {exc}.\n" - f"\n" - f"You cannot access a WebSocket server directly " - f"with a browser. You need a WebSocket client.\n" - ), - ) - response.headers["Upgrade"] = "websocket" - return response - except InvalidHandshake as exc: - request._exception = exc - self.handshake_exc = exc - if self.debug: - self.logger.debug("! invalid handshake", exc_info=True) - return self.reject( - http.HTTPStatus.BAD_REQUEST, - f"Failed to open a WebSocket connection: {exc}.\n", - ) - except Exception as exc: - # Handle exceptions raised by user-provided select_subprotocol and - # unexpected errors. - request._exception = exc - self.handshake_exc = exc - self.logger.error("opening handshake failed", exc_info=True) - return self.reject( - http.HTTPStatus.INTERNAL_SERVER_ERROR, - ( - "Failed to open a WebSocket connection.\n" - "See server log for more information.\n" - ), - ) - - headers = Headers() - - headers["Date"] = email.utils.formatdate(usegmt=True) - - headers["Upgrade"] = "websocket" - headers["Connection"] = "Upgrade" - headers["Sec-WebSocket-Accept"] = accept_header - - if extensions_header is not None: - headers["Sec-WebSocket-Extensions"] = extensions_header - - if protocol_header is not None: - headers["Sec-WebSocket-Protocol"] = protocol_header - - self.logger.info("connection open") - return Response(101, "Switching Protocols", headers) - - def process_request( - self, - request: Request, - ) -> Tuple[str, Optional[str], Optional[str]]: - """ - Check a handshake request and negotiate extensions and subprotocol. - - This function doesn't verify that the request is an HTTP/1.1 or higher - GET request and doesn't check the ``Host`` header. These controls are - usually performed earlier in the HTTP request handling code. They're - the responsibility of the caller. - - Args: - request: WebSocket handshake request received from the client. - - Returns: - Tuple[str, Optional[str], Optional[str]]: - ``Sec-WebSocket-Accept``, ``Sec-WebSocket-Extensions``, and - ``Sec-WebSocket-Protocol`` headers for the handshake response. - - Raises: - InvalidHandshake: if the handshake request is invalid; - then the server must return 400 Bad Request error. - - """ - headers = request.headers - - connection: List[ConnectionOption] = sum( - [parse_connection(value) for value in headers.get_all("Connection")], [] - ) - - if not any(value.lower() == "upgrade" for value in connection): - raise InvalidUpgrade( - "Connection", ", ".join(connection) if connection else None - ) - - upgrade: List[UpgradeProtocol] = sum( - [parse_upgrade(value) for value in headers.get_all("Upgrade")], [] - ) - - # For compatibility with non-strict implementations, ignore case when - # checking the Upgrade header. The RFC always uses "websocket", except - # in section 11.2. (IANA registration) where it uses "WebSocket". - if not (len(upgrade) == 1 and upgrade[0].lower() == "websocket"): - raise InvalidUpgrade("Upgrade", ", ".join(upgrade) if upgrade else None) - - try: - key = headers["Sec-WebSocket-Key"] - except KeyError as exc: - raise InvalidHeader("Sec-WebSocket-Key") from exc - except MultipleValuesError as exc: - raise InvalidHeader( - "Sec-WebSocket-Key", "more than one Sec-WebSocket-Key header found" - ) from exc - - try: - raw_key = base64.b64decode(key.encode(), validate=True) - except binascii.Error as exc: - raise InvalidHeaderValue("Sec-WebSocket-Key", key) from exc - if len(raw_key) != 16: - raise InvalidHeaderValue("Sec-WebSocket-Key", key) - - try: - version = headers["Sec-WebSocket-Version"] - except KeyError as exc: - raise InvalidHeader("Sec-WebSocket-Version") from exc - except MultipleValuesError as exc: - raise InvalidHeader( - "Sec-WebSocket-Version", - "more than one Sec-WebSocket-Version header found", - ) from exc - - if version != "13": - raise InvalidHeaderValue("Sec-WebSocket-Version", version) - - accept_header = accept_key(key) - - self.origin = self.process_origin(headers) - - extensions_header, self.extensions = self.process_extensions(headers) - - protocol_header = self.subprotocol = self.process_subprotocol(headers) - - return ( - accept_header, - extensions_header, - protocol_header, - ) - - def process_origin(self, headers: Headers) -> Optional[Origin]: - """ - Handle the Origin HTTP request header. - - Args: - headers: WebSocket handshake request headers. - - Returns: - Optional[Origin]: origin, if it is acceptable. - - Raises: - InvalidHandshake: if the Origin header is invalid. - InvalidOrigin: if the origin isn't acceptable. - - """ - # "The user agent MUST NOT include more than one Origin header field" - # per https://www.rfc-editor.org/rfc/rfc6454.html#section-7.3. - try: - origin = cast(Optional[Origin], headers.get("Origin")) - except MultipleValuesError as exc: - raise InvalidHeader("Origin", "more than one Origin header found") from exc - if self.origins is not None: - if origin not in self.origins: - raise InvalidOrigin(origin) - return origin - - def process_extensions( - self, - headers: Headers, - ) -> Tuple[Optional[str], List[Extension]]: - """ - Handle the Sec-WebSocket-Extensions HTTP request header. - - Accept or reject each extension proposed in the client request. - Negotiate parameters for accepted extensions. - - Per :rfc:`6455`, negotiation rules are defined by the specification of - each extension. - - To provide this level of flexibility, for each extension proposed by - the client, we check for a match with each extension available in the - server configuration. If no match is found, the extension is ignored. - - If several variants of the same extension are proposed by the client, - it may be accepted several times, which won't make sense in general. - Extensions must implement their own requirements. For this purpose, - the list of previously accepted extensions is provided. - - This process doesn't allow the server to reorder extensions. It can - only select a subset of the extensions proposed by the client. - - Other requirements, for example related to mandatory extensions or the - order of extensions, may be implemented by overriding this method. - - Args: - headers: WebSocket handshake request headers. - - Returns: - Tuple[Optional[str], List[Extension]]: ``Sec-WebSocket-Extensions`` - HTTP response header and list of accepted extensions. - - Raises: - InvalidHandshake: if the Sec-WebSocket-Extensions header is invalid. - - """ - response_header_value: Optional[str] = None - - extension_headers: List[ExtensionHeader] = [] - accepted_extensions: List[Extension] = [] - - header_values = headers.get_all("Sec-WebSocket-Extensions") - - if header_values and self.available_extensions: - parsed_header_values: List[ExtensionHeader] = sum( - [parse_extension(header_value) for header_value in header_values], [] - ) - - for name, request_params in parsed_header_values: - for ext_factory in self.available_extensions: - # Skip non-matching extensions based on their name. - if ext_factory.name != name: - continue - - # Skip non-matching extensions based on their params. - try: - response_params, extension = ext_factory.process_request_params( - request_params, accepted_extensions - ) - except NegotiationError: - continue - - # Add matching extension to the final list. - extension_headers.append((name, response_params)) - accepted_extensions.append(extension) - - # Break out of the loop once we have a match. - break - - # If we didn't break from the loop, no extension in our list - # matched what the client sent. The extension is declined. - - # Serialize extension header. - if extension_headers: - response_header_value = build_extension(extension_headers) - - return response_header_value, accepted_extensions - - def process_subprotocol(self, headers: Headers) -> Optional[Subprotocol]: - """ - Handle the Sec-WebSocket-Protocol HTTP request header. - - Args: - headers: WebSocket handshake request headers. - - Returns: - Optional[Subprotocol]: Subprotocol, if one was selected; this is - also the value of the ``Sec-WebSocket-Protocol`` response header. - - Raises: - InvalidHandshake: if the Sec-WebSocket-Subprotocol header is invalid. - - """ - subprotocols: Sequence[Subprotocol] = sum( - [ - parse_subprotocol(header_value) - for header_value in headers.get_all("Sec-WebSocket-Protocol") - ], - [], - ) - - return self.select_subprotocol(subprotocols) - - def select_subprotocol( - self, - subprotocols: Sequence[Subprotocol], - ) -> Optional[Subprotocol]: - """ - Pick a subprotocol among those offered by the client. - - If several subprotocols are supported by both the client and the server, - pick the first one in the list declared the server. - - If the server doesn't support any subprotocols, continue without a - subprotocol, regardless of what the client offers. - - If the server supports at least one subprotocol and the client doesn't - offer any, abort the handshake with an HTTP 400 error. - - You provide a ``select_subprotocol`` argument to :class:`ServerProtocol` - to override this logic. For example, you could accept the connection - even if client doesn't offer a subprotocol, rather than reject it. - - Here's how to negotiate the ``chat`` subprotocol if the client supports - it and continue without a subprotocol otherwise:: - - def select_subprotocol(protocol, subprotocols): - if "chat" in subprotocols: - return "chat" - - Args: - subprotocols: list of subprotocols offered by the client. - - Returns: - Optional[Subprotocol]: Selected subprotocol, if a common subprotocol - was found. - - :obj:`None` to continue without a subprotocol. - - Raises: - NegotiationError: custom implementations may raise this exception - to abort the handshake with an HTTP 400 error. - - """ - # Server doesn't offer any subprotocols. - if not self.available_subprotocols: # None or empty list - return None - - # Server offers at least one subprotocol but client doesn't offer any. - if not subprotocols: - raise NegotiationError("missing subprotocol") - - # Server and client both offer subprotocols. Look for a shared one. - proposed_subprotocols = set(subprotocols) - for subprotocol in self.available_subprotocols: - if subprotocol in proposed_subprotocols: - return subprotocol - - # No common subprotocol was found. - raise NegotiationError( - "invalid subprotocol; expected one of " - + ", ".join(self.available_subprotocols) - ) - - def reject( - self, - status: StatusLike, - text: str, - ) -> Response: - """ - Create a handshake response to reject the connection. - - A short plain text response is the best fallback when failing to - establish a WebSocket connection. - - You must send the handshake response with :meth:`send_response`. - - You can modify it before sending it, for example to alter HTTP headers. - - Args: - status: HTTP status code. - text: HTTP response body; will be encoded to UTF-8. - - Returns: - Response: WebSocket handshake response event to send to the client. - - """ - # If a user passes an int instead of a HTTPStatus, fix it automatically. - status = http.HTTPStatus(status) - body = text.encode() - headers = Headers( - [ - ("Date", email.utils.formatdate(usegmt=True)), - ("Connection", "close"), - ("Content-Length", str(len(body))), - ("Content-Type", "text/plain; charset=utf-8"), - ] - ) - response = Response(status.value, status.phrase, headers, body) - # When reject() is called from accept(), handshake_exc is already set. - # If a user calls reject(), set handshake_exc to guarantee invariant: - # "handshake_exc is None if and only if opening handshake succeeded." - if self.handshake_exc is None: - self.handshake_exc = InvalidStatus(response) - self.logger.info("connection rejected (%d %s)", status.value, status.phrase) - return response - - def send_response(self, response: Response) -> None: - """ - Send a handshake response to the client. - - Args: - response: WebSocket handshake response event to send. - - """ - if self.debug: - code, phrase = response.status_code, response.reason_phrase - self.logger.debug("> HTTP/1.1 %d %s", code, phrase) - for key, value in response.headers.raw_items(): - self.logger.debug("> %s: %s", key, value) - if response.body is not None: - self.logger.debug("> [body] (%d bytes)", len(response.body)) - - self.writes.append(response.serialize()) - - if response.status_code == 101: - assert self.state is CONNECTING - self.state = OPEN - else: - self.send_eof() - self.parser = self.discard() - next(self.parser) # start coroutine - - def parse(self) -> Generator[None, None, None]: - if self.state is CONNECTING: - try: - request = yield from Request.parse( - self.reader.read_line, - ) - except Exception as exc: - self.handshake_exc = exc - self.send_eof() - self.parser = self.discard() - next(self.parser) # start coroutine - yield - - if self.debug: - self.logger.debug("< GET %s HTTP/1.1", request.path) - for key, value in request.headers.raw_items(): - self.logger.debug("< %s: %s", key, value) - - self.events.append(request) - - yield from super().parse() - - -class ServerConnection(ServerProtocol): - def __init__(self, *args: Any, **kwargs: Any) -> None: - warnings.warn( - "ServerConnection was renamed to ServerProtocol", - DeprecationWarning, - ) - super().__init__(*args, **kwargs) diff --git a/venv/lib/python3.11/site-packages/websockets/speedups.c b/venv/lib/python3.11/site-packages/websockets/speedups.c deleted file mode 100644 index a195904..0000000 --- a/venv/lib/python3.11/site-packages/websockets/speedups.c +++ /dev/null @@ -1,223 +0,0 @@ -/* C implementation of performance sensitive functions. */ - -#define PY_SSIZE_T_CLEAN -#include <Python.h> -#include <stdint.h> /* uint8_t, uint32_t, uint64_t */ - -#if __ARM_NEON -#include <arm_neon.h> -#elif __SSE2__ -#include <emmintrin.h> -#endif - -static const Py_ssize_t MASK_LEN = 4; - -/* Similar to PyBytes_AsStringAndSize, but accepts more types */ - -static int -_PyBytesLike_AsStringAndSize(PyObject *obj, PyObject **tmp, char **buffer, Py_ssize_t *length) -{ - // This supports bytes, bytearrays, and memoryview objects, - // which are common data structures for handling byte streams. - // websockets.framing.prepare_data() returns only these types. - // If *tmp isn't NULL, the caller gets a new reference. - if (PyBytes_Check(obj)) - { - *tmp = NULL; - *buffer = PyBytes_AS_STRING(obj); - *length = PyBytes_GET_SIZE(obj); - } - else if (PyByteArray_Check(obj)) - { - *tmp = NULL; - *buffer = PyByteArray_AS_STRING(obj); - *length = PyByteArray_GET_SIZE(obj); - } - else if (PyMemoryView_Check(obj)) - { - *tmp = PyMemoryView_GetContiguous(obj, PyBUF_READ, 'C'); - if (*tmp == NULL) - { - return -1; - } - Py_buffer *mv_buf; - mv_buf = PyMemoryView_GET_BUFFER(*tmp); - *buffer = mv_buf->buf; - *length = mv_buf->len; - } - else - { - PyErr_Format( - PyExc_TypeError, - "expected a bytes-like object, %.200s found", - Py_TYPE(obj)->tp_name); - return -1; - } - - return 0; -} - -/* C implementation of websockets.utils.apply_mask */ - -static PyObject * -apply_mask(PyObject *self, PyObject *args, PyObject *kwds) -{ - - // In order to support various bytes-like types, accept any Python object. - - static char *kwlist[] = {"data", "mask", NULL}; - PyObject *input_obj; - PyObject *mask_obj; - - // A pointer to a char * + length will be extracted from the data and mask - // arguments, possibly via a Py_buffer. - - PyObject *input_tmp = NULL; - char *input; - Py_ssize_t input_len; - PyObject *mask_tmp = NULL; - char *mask; - Py_ssize_t mask_len; - - // Initialize a PyBytesObject then get a pointer to the underlying char * - // in order to avoid an extra memory copy in PyBytes_FromStringAndSize. - - PyObject *result = NULL; - char *output; - - // Other variables. - - Py_ssize_t i = 0; - - // Parse inputs. - - if (!PyArg_ParseTupleAndKeywords( - args, kwds, "OO", kwlist, &input_obj, &mask_obj)) - { - goto exit; - } - - if (_PyBytesLike_AsStringAndSize(input_obj, &input_tmp, &input, &input_len) == -1) - { - goto exit; - } - - if (_PyBytesLike_AsStringAndSize(mask_obj, &mask_tmp, &mask, &mask_len) == -1) - { - goto exit; - } - - if (mask_len != MASK_LEN) - { - PyErr_SetString(PyExc_ValueError, "mask must contain 4 bytes"); - goto exit; - } - - // Create output. - - result = PyBytes_FromStringAndSize(NULL, input_len); - if (result == NULL) - { - goto exit; - } - - // Since we just created result, we don't need error checks. - output = PyBytes_AS_STRING(result); - - // Perform the masking operation. - - // Apparently GCC cannot figure out the following optimizations by itself. - - // We need a new scope for MSVC 2010 (non C99 friendly) - { -#if __ARM_NEON - - // With NEON support, XOR by blocks of 16 bytes = 128 bits. - - Py_ssize_t input_len_128 = input_len & ~15; - uint8x16_t mask_128 = vreinterpretq_u8_u32(vdupq_n_u32(*(uint32_t *)mask)); - - for (; i < input_len_128; i += 16) - { - uint8x16_t in_128 = vld1q_u8((uint8_t *)(input + i)); - uint8x16_t out_128 = veorq_u8(in_128, mask_128); - vst1q_u8((uint8_t *)(output + i), out_128); - } - -#elif __SSE2__ - - // With SSE2 support, XOR by blocks of 16 bytes = 128 bits. - - // Since we cannot control the 16-bytes alignment of input and output - // buffers, we rely on loadu/storeu rather than load/store. - - Py_ssize_t input_len_128 = input_len & ~15; - __m128i mask_128 = _mm_set1_epi32(*(uint32_t *)mask); - - for (; i < input_len_128; i += 16) - { - __m128i in_128 = _mm_loadu_si128((__m128i *)(input + i)); - __m128i out_128 = _mm_xor_si128(in_128, mask_128); - _mm_storeu_si128((__m128i *)(output + i), out_128); - } - -#else - - // Without SSE2 support, XOR by blocks of 8 bytes = 64 bits. - - // We assume the memory allocator aligns everything on 8 bytes boundaries. - - Py_ssize_t input_len_64 = input_len & ~7; - uint32_t mask_32 = *(uint32_t *)mask; - uint64_t mask_64 = ((uint64_t)mask_32 << 32) | (uint64_t)mask_32; - - for (; i < input_len_64; i += 8) - { - *(uint64_t *)(output + i) = *(uint64_t *)(input + i) ^ mask_64; - } - -#endif - } - - // XOR the remainder of the input byte by byte. - - for (; i < input_len; i++) - { - output[i] = input[i] ^ mask[i & (MASK_LEN - 1)]; - } - -exit: - Py_XDECREF(input_tmp); - Py_XDECREF(mask_tmp); - return result; - -} - -static PyMethodDef speedups_methods[] = { - { - "apply_mask", - (PyCFunction)apply_mask, - METH_VARARGS | METH_KEYWORDS, - "Apply masking to the data of a WebSocket message.", - }, - {NULL, NULL, 0, NULL}, /* Sentinel */ -}; - -static struct PyModuleDef speedups_module = { - PyModuleDef_HEAD_INIT, - "websocket.speedups", /* m_name */ - "C implementation of performance sensitive functions.", - /* m_doc */ - -1, /* m_size */ - speedups_methods, /* m_methods */ - NULL, - NULL, - NULL, - NULL -}; - -PyMODINIT_FUNC -PyInit_speedups(void) -{ - return PyModule_Create(&speedups_module); -} diff --git a/venv/lib/python3.11/site-packages/websockets/speedups.cpython-311-x86_64-linux-gnu.so b/venv/lib/python3.11/site-packages/websockets/speedups.cpython-311-x86_64-linux-gnu.so Binary files differdeleted file mode 100755 index 6a15c5d..0000000 --- a/venv/lib/python3.11/site-packages/websockets/speedups.cpython-311-x86_64-linux-gnu.so +++ /dev/null diff --git a/venv/lib/python3.11/site-packages/websockets/streams.py b/venv/lib/python3.11/site-packages/websockets/streams.py deleted file mode 100644 index f861d4b..0000000 --- a/venv/lib/python3.11/site-packages/websockets/streams.py +++ /dev/null @@ -1,151 +0,0 @@ -from __future__ import annotations - -from typing import Generator - - -class StreamReader: - """ - Generator-based stream reader. - - This class doesn't support concurrent calls to :meth:`read_line`, - :meth:`read_exact`, or :meth:`read_to_eof`. Make sure calls are - serialized. - - """ - - def __init__(self) -> None: - self.buffer = bytearray() - self.eof = False - - def read_line(self, m: int) -> Generator[None, None, bytes]: - """ - Read a LF-terminated line from the stream. - - This is a generator-based coroutine. - - The return value includes the LF character. - - Args: - m: maximum number bytes to read; this is a security limit. - - Raises: - EOFError: if the stream ends without a LF. - RuntimeError: if the stream ends in more than ``m`` bytes. - - """ - n = 0 # number of bytes to read - p = 0 # number of bytes without a newline - while True: - n = self.buffer.find(b"\n", p) + 1 - if n > 0: - break - p = len(self.buffer) - if p > m: - raise RuntimeError(f"read {p} bytes, expected no more than {m} bytes") - if self.eof: - raise EOFError(f"stream ends after {p} bytes, before end of line") - yield - if n > m: - raise RuntimeError(f"read {n} bytes, expected no more than {m} bytes") - r = self.buffer[:n] - del self.buffer[:n] - return r - - def read_exact(self, n: int) -> Generator[None, None, bytes]: - """ - Read a given number of bytes from the stream. - - This is a generator-based coroutine. - - Args: - n: how many bytes to read. - - Raises: - EOFError: if the stream ends in less than ``n`` bytes. - - """ - assert n >= 0 - while len(self.buffer) < n: - if self.eof: - p = len(self.buffer) - raise EOFError(f"stream ends after {p} bytes, expected {n} bytes") - yield - r = self.buffer[:n] - del self.buffer[:n] - return r - - def read_to_eof(self, m: int) -> Generator[None, None, bytes]: - """ - Read all bytes from the stream. - - This is a generator-based coroutine. - - Args: - m: maximum number bytes to read; this is a security limit. - - Raises: - RuntimeError: if the stream ends in more than ``m`` bytes. - - """ - while not self.eof: - p = len(self.buffer) - if p > m: - raise RuntimeError(f"read {p} bytes, expected no more than {m} bytes") - yield - r = self.buffer[:] - del self.buffer[:] - return r - - def at_eof(self) -> Generator[None, None, bool]: - """ - Tell whether the stream has ended and all data was read. - - This is a generator-based coroutine. - - """ - while True: - if self.buffer: - return False - if self.eof: - return True - # When all data was read but the stream hasn't ended, we can't - # tell if until either feed_data() or feed_eof() is called. - yield - - def feed_data(self, data: bytes) -> None: - """ - Write data to the stream. - - :meth:`feed_data` cannot be called after :meth:`feed_eof`. - - Args: - data: data to write. - - Raises: - EOFError: if the stream has ended. - - """ - if self.eof: - raise EOFError("stream ended") - self.buffer += data - - def feed_eof(self) -> None: - """ - End the stream. - - :meth:`feed_eof` cannot be called more than once. - - Raises: - EOFError: if the stream has ended. - - """ - if self.eof: - raise EOFError("stream ended") - self.eof = True - - def discard(self) -> None: - """ - Discard all buffered data, but don't end the stream. - - """ - del self.buffer[:] diff --git a/venv/lib/python3.11/site-packages/websockets/sync/__init__.py b/venv/lib/python3.11/site-packages/websockets/sync/__init__.py deleted file mode 100644 index e69de29..0000000 --- a/venv/lib/python3.11/site-packages/websockets/sync/__init__.py +++ /dev/null diff --git a/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/__init__.cpython-311.pyc b/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/__init__.cpython-311.pyc Binary files differdeleted file mode 100644 index 7d70e67..0000000 --- a/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/__init__.cpython-311.pyc +++ /dev/null diff --git a/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/client.cpython-311.pyc b/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/client.cpython-311.pyc Binary files differdeleted file mode 100644 index 79bd716..0000000 --- a/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/client.cpython-311.pyc +++ /dev/null diff --git a/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/connection.cpython-311.pyc b/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/connection.cpython-311.pyc Binary files differdeleted file mode 100644 index ae821c1..0000000 --- a/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/connection.cpython-311.pyc +++ /dev/null diff --git a/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/messages.cpython-311.pyc b/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/messages.cpython-311.pyc Binary files differdeleted file mode 100644 index e9aadf8..0000000 --- a/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/messages.cpython-311.pyc +++ /dev/null diff --git a/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/server.cpython-311.pyc b/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/server.cpython-311.pyc Binary files differdeleted file mode 100644 index 4d8d13f..0000000 --- a/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/server.cpython-311.pyc +++ /dev/null diff --git a/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/utils.cpython-311.pyc b/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/utils.cpython-311.pyc Binary files differdeleted file mode 100644 index 683704e..0000000 --- a/venv/lib/python3.11/site-packages/websockets/sync/__pycache__/utils.cpython-311.pyc +++ /dev/null diff --git a/venv/lib/python3.11/site-packages/websockets/sync/client.py b/venv/lib/python3.11/site-packages/websockets/sync/client.py deleted file mode 100644 index 087ff5f..0000000 --- a/venv/lib/python3.11/site-packages/websockets/sync/client.py +++ /dev/null @@ -1,328 +0,0 @@ -from __future__ import annotations - -import socket -import ssl -import threading -from typing import Any, Optional, Sequence, Type - -from ..client import ClientProtocol -from ..datastructures import HeadersLike -from ..extensions.base import ClientExtensionFactory -from ..extensions.permessage_deflate import enable_client_permessage_deflate -from ..headers import validate_subprotocols -from ..http import USER_AGENT -from ..http11 import Response -from ..protocol import CONNECTING, OPEN, Event -from ..typing import LoggerLike, Origin, Subprotocol -from ..uri import parse_uri -from .connection import Connection -from .utils import Deadline - - -__all__ = ["connect", "unix_connect", "ClientConnection"] - - -class ClientConnection(Connection): - """ - Threaded implementation of a WebSocket client connection. - - :class:`ClientConnection` provides :meth:`recv` and :meth:`send` methods for - receiving and sending messages. - - It supports iteration to receive messages:: - - for message in websocket: - process(message) - - The iterator exits normally when the connection is closed with close code - 1000 (OK) or 1001 (going away) or without a close code. It raises a - :exc:`~websockets.exceptions.ConnectionClosedError` when the connection is - closed with any other code. - - Args: - socket: Socket connected to a WebSocket server. - protocol: Sans-I/O connection. - close_timeout: Timeout for closing the connection in seconds. - - """ - - def __init__( - self, - socket: socket.socket, - protocol: ClientProtocol, - *, - close_timeout: Optional[float] = 10, - ) -> None: - self.protocol: ClientProtocol - self.response_rcvd = threading.Event() - super().__init__( - socket, - protocol, - close_timeout=close_timeout, - ) - - def handshake( - self, - additional_headers: Optional[HeadersLike] = None, - user_agent_header: Optional[str] = USER_AGENT, - timeout: Optional[float] = None, - ) -> None: - """ - Perform the opening handshake. - - """ - with self.send_context(expected_state=CONNECTING): - self.request = self.protocol.connect() - if additional_headers is not None: - self.request.headers.update(additional_headers) - if user_agent_header is not None: - self.request.headers["User-Agent"] = user_agent_header - self.protocol.send_request(self.request) - - if not self.response_rcvd.wait(timeout): - self.close_socket() - self.recv_events_thread.join() - raise TimeoutError("timed out during handshake") - - if self.response is None: - self.close_socket() - self.recv_events_thread.join() - raise ConnectionError("connection closed during handshake") - - if self.protocol.state is not OPEN: - self.recv_events_thread.join(self.close_timeout) - self.close_socket() - self.recv_events_thread.join() - - if self.protocol.handshake_exc is not None: - raise self.protocol.handshake_exc - - def process_event(self, event: Event) -> None: - """ - Process one incoming event. - - """ - # First event - handshake response. - if self.response is None: - assert isinstance(event, Response) - self.response = event - self.response_rcvd.set() - # Later events - frames. - else: - super().process_event(event) - - def recv_events(self) -> None: - """ - Read incoming data from the socket and process events. - - """ - try: - super().recv_events() - finally: - # If the connection is closed during the handshake, unblock it. - self.response_rcvd.set() - - -def connect( - uri: str, - *, - # TCP/TLS — unix and path are only for unix_connect() - sock: Optional[socket.socket] = None, - ssl_context: Optional[ssl.SSLContext] = None, - server_hostname: Optional[str] = None, - unix: bool = False, - path: Optional[str] = None, - # WebSocket - origin: Optional[Origin] = None, - extensions: Optional[Sequence[ClientExtensionFactory]] = None, - subprotocols: Optional[Sequence[Subprotocol]] = None, - additional_headers: Optional[HeadersLike] = None, - user_agent_header: Optional[str] = USER_AGENT, - compression: Optional[str] = "deflate", - # Timeouts - open_timeout: Optional[float] = 10, - close_timeout: Optional[float] = 10, - # Limits - max_size: Optional[int] = 2**20, - # Logging - logger: Optional[LoggerLike] = None, - # Escape hatch for advanced customization - create_connection: Optional[Type[ClientConnection]] = None, -) -> ClientConnection: - """ - Connect to the WebSocket server at ``uri``. - - This function returns a :class:`ClientConnection` instance, which you can - use to send and receive messages. - - :func:`connect` may be used as a context manager:: - - async with websockets.sync.client.connect(...) as websocket: - ... - - The connection is closed automatically when exiting the context. - - Args: - uri: URI of the WebSocket server. - sock: Preexisting TCP socket. ``sock`` overrides the host and port - from ``uri``. You may call :func:`socket.create_connection` to - create a suitable TCP socket. - ssl_context: Configuration for enabling TLS on the connection. - server_hostname: Host name for the TLS handshake. ``server_hostname`` - overrides the host name from ``uri``. - origin: Value of the ``Origin`` header, for servers that require it. - extensions: List of supported extensions, in order in which they - should be negotiated and run. - subprotocols: List of supported subprotocols, in order of decreasing - preference. - additional_headers (HeadersLike | None): Arbitrary HTTP headers to add - to the handshake request. - user_agent_header: Value of the ``User-Agent`` request header. - It defaults to ``"Python/x.y.z websockets/X.Y"``. - Setting it to :obj:`None` removes the header. - compression: The "permessage-deflate" extension is enabled by default. - Set ``compression`` to :obj:`None` to disable it. See the - :doc:`compression guide <../../topics/compression>` for details. - open_timeout: Timeout for opening the connection in seconds. - :obj:`None` disables the timeout. - close_timeout: Timeout for closing the connection in seconds. - :obj:`None` disables the timeout. - max_size: Maximum size of incoming messages in bytes. - :obj:`None` disables the limit. - logger: Logger for this client. - It defaults to ``logging.getLogger("websockets.client")``. - See the :doc:`logging guide <../../topics/logging>` for details. - create_connection: Factory for the :class:`ClientConnection` managing - the connection. Set it to a wrapper or a subclass to customize - connection handling. - - Raises: - InvalidURI: If ``uri`` isn't a valid WebSocket URI. - OSError: If the TCP connection fails. - InvalidHandshake: If the opening handshake fails. - TimeoutError: If the opening handshake times out. - - """ - - # Process parameters - - wsuri = parse_uri(uri) - if not wsuri.secure and ssl_context is not None: - raise TypeError("ssl_context argument is incompatible with a ws:// URI") - - if unix: - if path is None and sock is None: - raise TypeError("missing path argument") - elif path is not None and sock is not None: - raise TypeError("path and sock arguments are incompatible") - else: - assert path is None # private argument, only set by unix_connect() - - if subprotocols is not None: - validate_subprotocols(subprotocols) - - if compression == "deflate": - extensions = enable_client_permessage_deflate(extensions) - elif compression is not None: - raise ValueError(f"unsupported compression: {compression}") - - # Calculate timeouts on the TCP, TLS, and WebSocket handshakes. - # The TCP and TLS timeouts must be set on the socket, then removed - # to avoid conflicting with the WebSocket timeout in handshake(). - deadline = Deadline(open_timeout) - - if create_connection is None: - create_connection = ClientConnection - - try: - # Connect socket - - if sock is None: - if unix: - sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) - sock.settimeout(deadline.timeout()) - assert path is not None # validated above -- this is for mpypy - sock.connect(path) - else: - sock = socket.create_connection( - (wsuri.host, wsuri.port), - deadline.timeout(), - ) - sock.settimeout(None) - - # Disable Nagle algorithm - - if not unix: - sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, True) - - # Initialize TLS wrapper and perform TLS handshake - - if wsuri.secure: - if ssl_context is None: - ssl_context = ssl.create_default_context() - if server_hostname is None: - server_hostname = wsuri.host - sock.settimeout(deadline.timeout()) - sock = ssl_context.wrap_socket(sock, server_hostname=server_hostname) - sock.settimeout(None) - - # Initialize WebSocket connection - - protocol = ClientProtocol( - wsuri, - origin=origin, - extensions=extensions, - subprotocols=subprotocols, - state=CONNECTING, - max_size=max_size, - logger=logger, - ) - - # Initialize WebSocket protocol - - connection = create_connection( - sock, - protocol, - close_timeout=close_timeout, - ) - # On failure, handshake() closes the socket and raises an exception. - connection.handshake( - additional_headers, - user_agent_header, - deadline.timeout(), - ) - - except Exception: - if sock is not None: - sock.close() - raise - - return connection - - -def unix_connect( - path: Optional[str] = None, - uri: Optional[str] = None, - **kwargs: Any, -) -> ClientConnection: - """ - Connect to a WebSocket server listening on a Unix socket. - - This function is identical to :func:`connect`, except for the additional - ``path`` argument. It's only available on Unix. - - It's mainly useful for debugging servers listening on Unix sockets. - - Args: - path: File system path to the Unix socket. - uri: URI of the WebSocket server. ``uri`` defaults to - ``ws://localhost/`` or, when a ``ssl_context`` is provided, to - ``wss://localhost/``. - - """ - if uri is None: - if kwargs.get("ssl_context") is None: - uri = "ws://localhost/" - else: - uri = "wss://localhost/" - return connect(uri=uri, unix=True, path=path, **kwargs) diff --git a/venv/lib/python3.11/site-packages/websockets/sync/connection.py b/venv/lib/python3.11/site-packages/websockets/sync/connection.py deleted file mode 100644 index 4a8879e..0000000 --- a/venv/lib/python3.11/site-packages/websockets/sync/connection.py +++ /dev/null @@ -1,773 +0,0 @@ -from __future__ import annotations - -import contextlib -import logging -import random -import socket -import struct -import threading -import uuid -from types import TracebackType -from typing import Any, Dict, Iterable, Iterator, Mapping, Optional, Type, Union - -from ..exceptions import ConnectionClosed, ConnectionClosedOK, ProtocolError -from ..frames import DATA_OPCODES, BytesLike, CloseCode, Frame, Opcode, prepare_ctrl -from ..http11 import Request, Response -from ..protocol import CLOSED, OPEN, Event, Protocol, State -from ..typing import Data, LoggerLike, Subprotocol -from .messages import Assembler -from .utils import Deadline - - -__all__ = ["Connection"] - -logger = logging.getLogger(__name__) - - -class Connection: - """ - Threaded implementation of a WebSocket connection. - - :class:`Connection` provides APIs shared between WebSocket servers and - clients. - - You shouldn't use it directly. Instead, use - :class:`~websockets.sync.client.ClientConnection` or - :class:`~websockets.sync.server.ServerConnection`. - - """ - - recv_bufsize = 65536 - - def __init__( - self, - socket: socket.socket, - protocol: Protocol, - *, - close_timeout: Optional[float] = 10, - ) -> None: - self.socket = socket - self.protocol = protocol - self.close_timeout = close_timeout - - # Inject reference to this instance in the protocol's logger. - self.protocol.logger = logging.LoggerAdapter( - self.protocol.logger, - {"websocket": self}, - ) - - # Copy attributes from the protocol for convenience. - self.id: uuid.UUID = self.protocol.id - """Unique identifier of the connection. Useful in logs.""" - self.logger: LoggerLike = self.protocol.logger - """Logger for this connection.""" - self.debug = self.protocol.debug - - # HTTP handshake request and response. - self.request: Optional[Request] = None - """Opening handshake request.""" - self.response: Optional[Response] = None - """Opening handshake response.""" - - # Mutex serializing interactions with the protocol. - self.protocol_mutex = threading.Lock() - - # Assembler turning frames into messages and serializing reads. - self.recv_messages = Assembler() - - # Whether we are busy sending a fragmented message. - self.send_in_progress = False - - # Deadline for the closing handshake. - self.close_deadline: Optional[Deadline] = None - - # Mapping of ping IDs to pong waiters, in chronological order. - self.pings: Dict[bytes, threading.Event] = {} - - # Receiving events from the socket. - self.recv_events_thread = threading.Thread(target=self.recv_events) - self.recv_events_thread.start() - - # Exception raised in recv_events, to be chained to ConnectionClosed - # in the user thread in order to show why the TCP connection dropped. - self.recv_events_exc: Optional[BaseException] = None - - # Public attributes - - @property - def local_address(self) -> Any: - """ - Local address of the connection. - - For IPv4 connections, this is a ``(host, port)`` tuple. - - The format of the address depends on the address family. - See :meth:`~socket.socket.getsockname`. - - """ - return self.socket.getsockname() - - @property - def remote_address(self) -> Any: - """ - Remote address of the connection. - - For IPv4 connections, this is a ``(host, port)`` tuple. - - The format of the address depends on the address family. - See :meth:`~socket.socket.getpeername`. - - """ - return self.socket.getpeername() - - @property - def subprotocol(self) -> Optional[Subprotocol]: - """ - Subprotocol negotiated during the opening handshake. - - :obj:`None` if no subprotocol was negotiated. - - """ - return self.protocol.subprotocol - - # Public methods - - def __enter__(self) -> Connection: - return self - - def __exit__( - self, - exc_type: Optional[Type[BaseException]], - exc_value: Optional[BaseException], - traceback: Optional[TracebackType], - ) -> None: - if exc_type is None: - self.close() - else: - self.close(CloseCode.INTERNAL_ERROR) - - def __iter__(self) -> Iterator[Data]: - """ - Iterate on incoming messages. - - The iterator calls :meth:`recv` and yields messages in an infinite loop. - - It exits when the connection is closed normally. It raises a - :exc:`~websockets.exceptions.ConnectionClosedError` exception after a - protocol error or a network failure. - - """ - try: - while True: - yield self.recv() - except ConnectionClosedOK: - return - - def recv(self, timeout: Optional[float] = None) -> Data: - """ - Receive the next message. - - When the connection is closed, :meth:`recv` raises - :exc:`~websockets.exceptions.ConnectionClosed`. Specifically, it raises - :exc:`~websockets.exceptions.ConnectionClosedOK` after a normal closure - and :exc:`~websockets.exceptions.ConnectionClosedError` after a protocol - error or a network failure. This is how you detect the end of the - message stream. - - If ``timeout`` is :obj:`None`, block until a message is received. If - ``timeout`` is set and no message is received within ``timeout`` - seconds, raise :exc:`TimeoutError`. Set ``timeout`` to ``0`` to check if - a message was already received. - - If the message is fragmented, wait until all fragments are received, - reassemble them, and return the whole message. - - Returns: - A string (:class:`str`) for a Text_ frame or a bytestring - (:class:`bytes`) for a Binary_ frame. - - .. _Text: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.6 - .. _Binary: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.6 - - Raises: - ConnectionClosed: When the connection is closed. - RuntimeError: If two threads call :meth:`recv` or - :meth:`recv_streaming` concurrently. - - """ - try: - return self.recv_messages.get(timeout) - except EOFError: - raise self.protocol.close_exc from self.recv_events_exc - except RuntimeError: - raise RuntimeError( - "cannot call recv while another thread " - "is already running recv or recv_streaming" - ) from None - - def recv_streaming(self) -> Iterator[Data]: - """ - Receive the next message frame by frame. - - If the message is fragmented, yield each fragment as it is received. - The iterator must be fully consumed, or else the connection will become - unusable. - - :meth:`recv_streaming` raises the same exceptions as :meth:`recv`. - - Returns: - An iterator of strings (:class:`str`) for a Text_ frame or - bytestrings (:class:`bytes`) for a Binary_ frame. - - .. _Text: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.6 - .. _Binary: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.6 - - Raises: - ConnectionClosed: When the connection is closed. - RuntimeError: If two threads call :meth:`recv` or - :meth:`recv_streaming` concurrently. - - """ - try: - yield from self.recv_messages.get_iter() - except EOFError: - raise self.protocol.close_exc from self.recv_events_exc - except RuntimeError: - raise RuntimeError( - "cannot call recv_streaming while another thread " - "is already running recv or recv_streaming" - ) from None - - def send(self, message: Union[Data, Iterable[Data]]) -> None: - """ - Send a message. - - A string (:class:`str`) is sent as a Text_ frame. A bytestring or - bytes-like object (:class:`bytes`, :class:`bytearray`, or - :class:`memoryview`) is sent as a Binary_ frame. - - .. _Text: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.6 - .. _Binary: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.6 - - :meth:`send` also accepts an iterable of strings, bytestrings, or - bytes-like objects to enable fragmentation_. Each item is treated as a - message fragment and sent in its own frame. All items must be of the - same type, or else :meth:`send` will raise a :exc:`TypeError` and the - connection will be closed. - - .. _fragmentation: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.4 - - :meth:`send` rejects dict-like objects because this is often an error. - (If you really want to send the keys of a dict-like object as fragments, - call its :meth:`~dict.keys` method and pass the result to :meth:`send`.) - - When the connection is closed, :meth:`send` raises - :exc:`~websockets.exceptions.ConnectionClosed`. Specifically, it - raises :exc:`~websockets.exceptions.ConnectionClosedOK` after a normal - connection closure and - :exc:`~websockets.exceptions.ConnectionClosedError` after a protocol - error or a network failure. - - Args: - message: Message to send. - - Raises: - ConnectionClosed: When the connection is closed. - RuntimeError: If a connection is busy sending a fragmented message. - TypeError: If ``message`` doesn't have a supported type. - - """ - # Unfragmented message -- this case must be handled first because - # strings and bytes-like objects are iterable. - - if isinstance(message, str): - with self.send_context(): - if self.send_in_progress: - raise RuntimeError( - "cannot call send while another thread " - "is already running send" - ) - self.protocol.send_text(message.encode("utf-8")) - - elif isinstance(message, BytesLike): - with self.send_context(): - if self.send_in_progress: - raise RuntimeError( - "cannot call send while another thread " - "is already running send" - ) - self.protocol.send_binary(message) - - # Catch a common mistake -- passing a dict to send(). - - elif isinstance(message, Mapping): - raise TypeError("data is a dict-like object") - - # Fragmented message -- regular iterator. - - elif isinstance(message, Iterable): - chunks = iter(message) - try: - chunk = next(chunks) - except StopIteration: - return - - try: - # First fragment. - if isinstance(chunk, str): - text = True - with self.send_context(): - if self.send_in_progress: - raise RuntimeError( - "cannot call send while another thread " - "is already running send" - ) - self.send_in_progress = True - self.protocol.send_text( - chunk.encode("utf-8"), - fin=False, - ) - elif isinstance(chunk, BytesLike): - text = False - with self.send_context(): - if self.send_in_progress: - raise RuntimeError( - "cannot call send while another thread " - "is already running send" - ) - self.send_in_progress = True - self.protocol.send_binary( - chunk, - fin=False, - ) - else: - raise TypeError("data iterable must contain bytes or str") - - # Other fragments - for chunk in chunks: - if isinstance(chunk, str) and text: - with self.send_context(): - assert self.send_in_progress - self.protocol.send_continuation( - chunk.encode("utf-8"), - fin=False, - ) - elif isinstance(chunk, BytesLike) and not text: - with self.send_context(): - assert self.send_in_progress - self.protocol.send_continuation( - chunk, - fin=False, - ) - else: - raise TypeError("data iterable must contain uniform types") - - # Final fragment. - with self.send_context(): - self.protocol.send_continuation(b"", fin=True) - self.send_in_progress = False - - except RuntimeError: - # We didn't start sending a fragmented message. - raise - - except Exception: - # We're half-way through a fragmented message and we can't - # complete it. This makes the connection unusable. - with self.send_context(): - self.protocol.fail( - CloseCode.INTERNAL_ERROR, - "error in fragmented message", - ) - raise - - else: - raise TypeError("data must be bytes, str, or iterable") - - def close(self, code: int = CloseCode.NORMAL_CLOSURE, reason: str = "") -> None: - """ - Perform the closing handshake. - - :meth:`close` waits for the other end to complete the handshake, for the - TCP connection to terminate, and for all incoming messages to be read - with :meth:`recv`. - - :meth:`close` is idempotent: it doesn't do anything once the - connection is closed. - - Args: - code: WebSocket close code. - reason: WebSocket close reason. - - """ - try: - # The context manager takes care of waiting for the TCP connection - # to terminate after calling a method that sends a close frame. - with self.send_context(): - if self.send_in_progress: - self.protocol.fail( - CloseCode.INTERNAL_ERROR, - "close during fragmented message", - ) - else: - self.protocol.send_close(code, reason) - except ConnectionClosed: - # Ignore ConnectionClosed exceptions raised from send_context(). - # They mean that the connection is closed, which was the goal. - pass - - def ping(self, data: Optional[Data] = None) -> threading.Event: - """ - Send a Ping_. - - .. _Ping: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.5.2 - - A ping may serve as a keepalive or as a check that the remote endpoint - received all messages up to this point - - Args: - data: Payload of the ping. A :class:`str` will be encoded to UTF-8. - If ``data`` is :obj:`None`, the payload is four random bytes. - - Returns: - An event that will be set when the corresponding pong is received. - You can ignore it if you don't intend to wait. - - :: - - pong_event = ws.ping() - pong_event.wait() # only if you want to wait for the pong - - Raises: - ConnectionClosed: When the connection is closed. - RuntimeError: If another ping was sent with the same data and - the corresponding pong wasn't received yet. - - """ - if data is not None: - data = prepare_ctrl(data) - - with self.send_context(): - # Protect against duplicates if a payload is explicitly set. - if data in self.pings: - raise RuntimeError("already waiting for a pong with the same data") - - # Generate a unique random payload otherwise. - while data is None or data in self.pings: - data = struct.pack("!I", random.getrandbits(32)) - - pong_waiter = threading.Event() - self.pings[data] = pong_waiter - self.protocol.send_ping(data) - return pong_waiter - - def pong(self, data: Data = b"") -> None: - """ - Send a Pong_. - - .. _Pong: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.5.3 - - An unsolicited pong may serve as a unidirectional heartbeat. - - Args: - data: Payload of the pong. A :class:`str` will be encoded to UTF-8. - - Raises: - ConnectionClosed: When the connection is closed. - - """ - data = prepare_ctrl(data) - - with self.send_context(): - self.protocol.send_pong(data) - - # Private methods - - def process_event(self, event: Event) -> None: - """ - Process one incoming event. - - This method is overridden in subclasses to handle the handshake. - - """ - assert isinstance(event, Frame) - if event.opcode in DATA_OPCODES: - self.recv_messages.put(event) - - if event.opcode is Opcode.PONG: - self.acknowledge_pings(bytes(event.data)) - - def acknowledge_pings(self, data: bytes) -> None: - """ - Acknowledge pings when receiving a pong. - - """ - with self.protocol_mutex: - # Ignore unsolicited pong. - if data not in self.pings: - return - # Sending a pong for only the most recent ping is legal. - # Acknowledge all previous pings too in that case. - ping_id = None - ping_ids = [] - for ping_id, ping in self.pings.items(): - ping_ids.append(ping_id) - ping.set() - if ping_id == data: - break - else: - raise AssertionError("solicited pong not found in pings") - # Remove acknowledged pings from self.pings. - for ping_id in ping_ids: - del self.pings[ping_id] - - def recv_events(self) -> None: - """ - Read incoming data from the socket and process events. - - Run this method in a thread as long as the connection is alive. - - ``recv_events()`` exits immediately when the ``self.socket`` is closed. - - """ - try: - while True: - try: - if self.close_deadline is not None: - self.socket.settimeout(self.close_deadline.timeout()) - data = self.socket.recv(self.recv_bufsize) - except Exception as exc: - if self.debug: - self.logger.debug("error while receiving data", exc_info=True) - # When the closing handshake is initiated by our side, - # recv() may block until send_context() closes the socket. - # In that case, send_context() already set recv_events_exc. - # Calling set_recv_events_exc() avoids overwriting it. - with self.protocol_mutex: - self.set_recv_events_exc(exc) - break - - if data == b"": - break - - # Acquire the connection lock. - with self.protocol_mutex: - # Feed incoming data to the connection. - self.protocol.receive_data(data) - - # This isn't expected to raise an exception. - events = self.protocol.events_received() - - # Write outgoing data to the socket. - try: - self.send_data() - except Exception as exc: - if self.debug: - self.logger.debug("error while sending data", exc_info=True) - # Similarly to the above, avoid overriding an exception - # set by send_context(), in case of a race condition - # i.e. send_context() closes the socket after recv() - # returns above but before send_data() calls send(). - self.set_recv_events_exc(exc) - break - - if self.protocol.close_expected(): - # If the connection is expected to close soon, set the - # close deadline based on the close timeout. - if self.close_deadline is None: - self.close_deadline = Deadline(self.close_timeout) - - # Unlock conn_mutex before processing events. Else, the - # application can't send messages in response to events. - - # If self.send_data raised an exception, then events are lost. - # Given that automatic responses write small amounts of data, - # this should be uncommon, so we don't handle the edge case. - - try: - for event in events: - # This may raise EOFError if the closing handshake - # times out while a message is waiting to be read. - self.process_event(event) - except EOFError: - break - - # Breaking out of the while True: ... loop means that we believe - # that the socket doesn't work anymore. - with self.protocol_mutex: - # Feed the end of the data stream to the connection. - self.protocol.receive_eof() - - # This isn't expected to generate events. - assert not self.protocol.events_received() - - # There is no error handling because send_data() can only write - # the end of the data stream here and it handles errors itself. - self.send_data() - - except Exception as exc: - # This branch should never run. It's a safety net in case of bugs. - self.logger.error("unexpected internal error", exc_info=True) - with self.protocol_mutex: - self.set_recv_events_exc(exc) - # We don't know where we crashed. Force protocol state to CLOSED. - self.protocol.state = CLOSED - finally: - # This isn't expected to raise an exception. - self.close_socket() - - @contextlib.contextmanager - def send_context( - self, - *, - expected_state: State = OPEN, # CONNECTING during the opening handshake - ) -> Iterator[None]: - """ - Create a context for writing to the connection from user code. - - On entry, :meth:`send_context` acquires the connection lock and checks - that the connection is open; on exit, it writes outgoing data to the - socket:: - - with self.send_context(): - self.protocol.send_text(message.encode("utf-8")) - - When the connection isn't open on entry, when the connection is expected - to close on exit, or when an unexpected error happens, terminating the - connection, :meth:`send_context` waits until the connection is closed - then raises :exc:`~websockets.exceptions.ConnectionClosed`. - - """ - # Should we wait until the connection is closed? - wait_for_close = False - # Should we close the socket and raise ConnectionClosed? - raise_close_exc = False - # What exception should we chain ConnectionClosed to? - original_exc: Optional[BaseException] = None - - # Acquire the protocol lock. - with self.protocol_mutex: - if self.protocol.state is expected_state: - # Let the caller interact with the protocol. - try: - yield - except (ProtocolError, RuntimeError): - # The protocol state wasn't changed. Exit immediately. - raise - except Exception as exc: - self.logger.error("unexpected internal error", exc_info=True) - # This branch should never run. It's a safety net in case of - # bugs. Since we don't know what happened, we will close the - # connection and raise the exception to the caller. - wait_for_close = False - raise_close_exc = True - original_exc = exc - else: - # Check if the connection is expected to close soon. - if self.protocol.close_expected(): - wait_for_close = True - # If the connection is expected to close soon, set the - # close deadline based on the close timeout. - - # Since we tested earlier that protocol.state was OPEN - # (or CONNECTING) and we didn't release protocol_mutex, - # it is certain that self.close_deadline is still None. - assert self.close_deadline is None - self.close_deadline = Deadline(self.close_timeout) - # Write outgoing data to the socket. - try: - self.send_data() - except Exception as exc: - if self.debug: - self.logger.debug("error while sending data", exc_info=True) - # While the only expected exception here is OSError, - # other exceptions would be treated identically. - wait_for_close = False - raise_close_exc = True - original_exc = exc - - else: # self.protocol.state is not expected_state - # Minor layering violation: we assume that the connection - # will be closing soon if it isn't in the expected state. - wait_for_close = True - raise_close_exc = True - - # To avoid a deadlock, release the connection lock by exiting the - # context manager before waiting for recv_events() to terminate. - - # If the connection is expected to close soon and the close timeout - # elapses, close the socket to terminate the connection. - if wait_for_close: - if self.close_deadline is None: - timeout = self.close_timeout - else: - # Thread.join() returns immediately if timeout is negative. - timeout = self.close_deadline.timeout(raise_if_elapsed=False) - self.recv_events_thread.join(timeout) - - if self.recv_events_thread.is_alive(): - # There's no risk to overwrite another error because - # original_exc is never set when wait_for_close is True. - assert original_exc is None - original_exc = TimeoutError("timed out while closing connection") - # Set recv_events_exc before closing the socket in order to get - # proper exception reporting. - raise_close_exc = True - with self.protocol_mutex: - self.set_recv_events_exc(original_exc) - - # If an error occurred, close the socket to terminate the connection and - # raise an exception. - if raise_close_exc: - self.close_socket() - self.recv_events_thread.join() - raise self.protocol.close_exc from original_exc - - def send_data(self) -> None: - """ - Send outgoing data. - - This method requires holding protocol_mutex. - - Raises: - OSError: When a socket operations fails. - - """ - assert self.protocol_mutex.locked() - for data in self.protocol.data_to_send(): - if data: - if self.close_deadline is not None: - self.socket.settimeout(self.close_deadline.timeout()) - self.socket.sendall(data) - else: - try: - self.socket.shutdown(socket.SHUT_WR) - except OSError: # socket already closed - pass - - def set_recv_events_exc(self, exc: Optional[BaseException]) -> None: - """ - Set recv_events_exc, if not set yet. - - This method requires holding protocol_mutex. - - """ - assert self.protocol_mutex.locked() - if self.recv_events_exc is None: - self.recv_events_exc = exc - - def close_socket(self) -> None: - """ - Shutdown and close socket. Close message assembler. - - Calling close_socket() guarantees that recv_events() terminates. Indeed, - recv_events() may block only on socket.recv() or on recv_messages.put(). - - """ - # shutdown() is required to interrupt recv() on Linux. - try: - self.socket.shutdown(socket.SHUT_RDWR) - except OSError: - pass # socket is already closed - self.socket.close() - self.recv_messages.close() diff --git a/venv/lib/python3.11/site-packages/websockets/sync/messages.py b/venv/lib/python3.11/site-packages/websockets/sync/messages.py deleted file mode 100644 index 67a2231..0000000 --- a/venv/lib/python3.11/site-packages/websockets/sync/messages.py +++ /dev/null @@ -1,281 +0,0 @@ -from __future__ import annotations - -import codecs -import queue -import threading -from typing import Iterator, List, Optional, cast - -from ..frames import Frame, Opcode -from ..typing import Data - - -__all__ = ["Assembler"] - -UTF8Decoder = codecs.getincrementaldecoder("utf-8") - - -class Assembler: - """ - Assemble messages from frames. - - """ - - def __init__(self) -> None: - # Serialize reads and writes -- except for reads via synchronization - # primitives provided by the threading and queue modules. - self.mutex = threading.Lock() - - # We create a latch with two events to ensure proper interleaving of - # writing and reading messages. - # put() sets this event to tell get() that a message can be fetched. - self.message_complete = threading.Event() - # get() sets this event to let put() that the message was fetched. - self.message_fetched = threading.Event() - - # This flag prevents concurrent calls to get() by user code. - self.get_in_progress = False - # This flag prevents concurrent calls to put() by library code. - self.put_in_progress = False - - # Decoder for text frames, None for binary frames. - self.decoder: Optional[codecs.IncrementalDecoder] = None - - # Buffer of frames belonging to the same message. - self.chunks: List[Data] = [] - - # When switching from "buffering" to "streaming", we use a thread-safe - # queue for transferring frames from the writing thread (library code) - # to the reading thread (user code). We're buffering when chunks_queue - # is None and streaming when it's a SimpleQueue. None is a sentinel - # value marking the end of the stream, superseding message_complete. - - # Stream data from frames belonging to the same message. - # Remove quotes around type when dropping Python < 3.9. - self.chunks_queue: Optional["queue.SimpleQueue[Optional[Data]]"] = None - - # This flag marks the end of the stream. - self.closed = False - - def get(self, timeout: Optional[float] = None) -> Data: - """ - Read the next message. - - :meth:`get` returns a single :class:`str` or :class:`bytes`. - - If the message is fragmented, :meth:`get` waits until the last frame is - received, then it reassembles the message and returns it. To receive - messages frame by frame, use :meth:`get_iter` instead. - - Args: - timeout: If a timeout is provided and elapses before a complete - message is received, :meth:`get` raises :exc:`TimeoutError`. - - Raises: - EOFError: If the stream of frames has ended. - RuntimeError: If two threads run :meth:`get` or :meth:``get_iter` - concurrently. - - """ - with self.mutex: - if self.closed: - raise EOFError("stream of frames ended") - - if self.get_in_progress: - raise RuntimeError("get or get_iter is already running") - - self.get_in_progress = True - - # If the message_complete event isn't set yet, release the lock to - # allow put() to run and eventually set it. - # Locking with get_in_progress ensures only one thread can get here. - completed = self.message_complete.wait(timeout) - - with self.mutex: - self.get_in_progress = False - - # Waiting for a complete message timed out. - if not completed: - raise TimeoutError(f"timed out in {timeout:.1f}s") - - # get() was unblocked by close() rather than put(). - if self.closed: - raise EOFError("stream of frames ended") - - assert self.message_complete.is_set() - self.message_complete.clear() - - joiner: Data = b"" if self.decoder is None else "" - # mypy cannot figure out that chunks have the proper type. - message: Data = joiner.join(self.chunks) # type: ignore - - assert not self.message_fetched.is_set() - self.message_fetched.set() - - self.chunks = [] - assert self.chunks_queue is None - - return message - - def get_iter(self) -> Iterator[Data]: - """ - Stream the next message. - - Iterating the return value of :meth:`get_iter` yields a :class:`str` or - :class:`bytes` for each frame in the message. - - The iterator must be fully consumed before calling :meth:`get_iter` or - :meth:`get` again. Else, :exc:`RuntimeError` is raised. - - This method only makes sense for fragmented messages. If messages aren't - fragmented, use :meth:`get` instead. - - Raises: - EOFError: If the stream of frames has ended. - RuntimeError: If two threads run :meth:`get` or :meth:``get_iter` - concurrently. - - """ - with self.mutex: - if self.closed: - raise EOFError("stream of frames ended") - - if self.get_in_progress: - raise RuntimeError("get or get_iter is already running") - - chunks = self.chunks - self.chunks = [] - self.chunks_queue = cast( - # Remove quotes around type when dropping Python < 3.9. - "queue.SimpleQueue[Optional[Data]]", - queue.SimpleQueue(), - ) - - # Sending None in chunk_queue supersedes setting message_complete - # when switching to "streaming". If message is already complete - # when the switch happens, put() didn't send None, so we have to. - if self.message_complete.is_set(): - self.chunks_queue.put(None) - - self.get_in_progress = True - - # Locking with get_in_progress ensures only one thread can get here. - yield from chunks - while True: - chunk = self.chunks_queue.get() - if chunk is None: - break - yield chunk - - with self.mutex: - self.get_in_progress = False - - assert self.message_complete.is_set() - self.message_complete.clear() - - # get_iter() was unblocked by close() rather than put(). - if self.closed: - raise EOFError("stream of frames ended") - - assert not self.message_fetched.is_set() - self.message_fetched.set() - - assert self.chunks == [] - self.chunks_queue = None - - def put(self, frame: Frame) -> None: - """ - Add ``frame`` to the next message. - - When ``frame`` is the final frame in a message, :meth:`put` waits until - the message is fetched, either by calling :meth:`get` or by fully - consuming the return value of :meth:`get_iter`. - - :meth:`put` assumes that the stream of frames respects the protocol. If - it doesn't, the behavior is undefined. - - Raises: - EOFError: If the stream of frames has ended. - RuntimeError: If two threads run :meth:`put` concurrently. - - """ - with self.mutex: - if self.closed: - raise EOFError("stream of frames ended") - - if self.put_in_progress: - raise RuntimeError("put is already running") - - if frame.opcode is Opcode.TEXT: - self.decoder = UTF8Decoder(errors="strict") - elif frame.opcode is Opcode.BINARY: - self.decoder = None - elif frame.opcode is Opcode.CONT: - pass - else: - # Ignore control frames. - return - - data: Data - if self.decoder is not None: - data = self.decoder.decode(frame.data, frame.fin) - else: - data = frame.data - - if self.chunks_queue is None: - self.chunks.append(data) - else: - self.chunks_queue.put(data) - - if not frame.fin: - return - - # Message is complete. Wait until it's fetched to return. - - assert not self.message_complete.is_set() - self.message_complete.set() - - if self.chunks_queue is not None: - self.chunks_queue.put(None) - - assert not self.message_fetched.is_set() - - self.put_in_progress = True - - # Release the lock to allow get() to run and eventually set the event. - self.message_fetched.wait() - - with self.mutex: - self.put_in_progress = False - - assert self.message_fetched.is_set() - self.message_fetched.clear() - - # put() was unblocked by close() rather than get() or get_iter(). - if self.closed: - raise EOFError("stream of frames ended") - - self.decoder = None - - def close(self) -> None: - """ - End the stream of frames. - - Callling :meth:`close` concurrently with :meth:`get`, :meth:`get_iter`, - or :meth:`put` is safe. They will raise :exc:`EOFError`. - - """ - with self.mutex: - if self.closed: - return - - self.closed = True - - # Unblock get or get_iter. - if self.get_in_progress: - self.message_complete.set() - if self.chunks_queue is not None: - self.chunks_queue.put(None) - - # Unblock put(). - if self.put_in_progress: - self.message_fetched.set() diff --git a/venv/lib/python3.11/site-packages/websockets/sync/server.py b/venv/lib/python3.11/site-packages/websockets/sync/server.py deleted file mode 100644 index 1476796..0000000 --- a/venv/lib/python3.11/site-packages/websockets/sync/server.py +++ /dev/null @@ -1,530 +0,0 @@ -from __future__ import annotations - -import http -import logging -import os -import selectors -import socket -import ssl -import sys -import threading -from types import TracebackType -from typing import Any, Callable, Optional, Sequence, Type - -from websockets.frames import CloseCode - -from ..extensions.base import ServerExtensionFactory -from ..extensions.permessage_deflate import enable_server_permessage_deflate -from ..headers import validate_subprotocols -from ..http import USER_AGENT -from ..http11 import Request, Response -from ..protocol import CONNECTING, OPEN, Event -from ..server import ServerProtocol -from ..typing import LoggerLike, Origin, Subprotocol -from .connection import Connection -from .utils import Deadline - - -__all__ = ["serve", "unix_serve", "ServerConnection", "WebSocketServer"] - - -class ServerConnection(Connection): - """ - Threaded implementation of a WebSocket server connection. - - :class:`ServerConnection` provides :meth:`recv` and :meth:`send` methods for - receiving and sending messages. - - It supports iteration to receive messages:: - - for message in websocket: - process(message) - - The iterator exits normally when the connection is closed with close code - 1000 (OK) or 1001 (going away) or without a close code. It raises a - :exc:`~websockets.exceptions.ConnectionClosedError` when the connection is - closed with any other code. - - Args: - socket: Socket connected to a WebSocket client. - protocol: Sans-I/O connection. - close_timeout: Timeout for closing the connection in seconds. - - """ - - def __init__( - self, - socket: socket.socket, - protocol: ServerProtocol, - *, - close_timeout: Optional[float] = 10, - ) -> None: - self.protocol: ServerProtocol - self.request_rcvd = threading.Event() - super().__init__( - socket, - protocol, - close_timeout=close_timeout, - ) - - def handshake( - self, - process_request: Optional[ - Callable[ - [ServerConnection, Request], - Optional[Response], - ] - ] = None, - process_response: Optional[ - Callable[ - [ServerConnection, Request, Response], - Optional[Response], - ] - ] = None, - server_header: Optional[str] = USER_AGENT, - timeout: Optional[float] = None, - ) -> None: - """ - Perform the opening handshake. - - """ - if not self.request_rcvd.wait(timeout): - self.close_socket() - self.recv_events_thread.join() - raise TimeoutError("timed out during handshake") - - if self.request is None: - self.close_socket() - self.recv_events_thread.join() - raise ConnectionError("connection closed during handshake") - - with self.send_context(expected_state=CONNECTING): - self.response = None - - if process_request is not None: - try: - self.response = process_request(self, self.request) - except Exception as exc: - self.protocol.handshake_exc = exc - self.logger.error("opening handshake failed", exc_info=True) - self.response = self.protocol.reject( - http.HTTPStatus.INTERNAL_SERVER_ERROR, - ( - "Failed to open a WebSocket connection.\n" - "See server log for more information.\n" - ), - ) - - if self.response is None: - self.response = self.protocol.accept(self.request) - - if server_header is not None: - self.response.headers["Server"] = server_header - - if process_response is not None: - try: - response = process_response(self, self.request, self.response) - except Exception as exc: - self.protocol.handshake_exc = exc - self.logger.error("opening handshake failed", exc_info=True) - self.response = self.protocol.reject( - http.HTTPStatus.INTERNAL_SERVER_ERROR, - ( - "Failed to open a WebSocket connection.\n" - "See server log for more information.\n" - ), - ) - else: - if response is not None: - self.response = response - - self.protocol.send_response(self.response) - - if self.protocol.state is not OPEN: - self.recv_events_thread.join(self.close_timeout) - self.close_socket() - self.recv_events_thread.join() - - if self.protocol.handshake_exc is not None: - raise self.protocol.handshake_exc - - def process_event(self, event: Event) -> None: - """ - Process one incoming event. - - """ - # First event - handshake request. - if self.request is None: - assert isinstance(event, Request) - self.request = event - self.request_rcvd.set() - # Later events - frames. - else: - super().process_event(event) - - def recv_events(self) -> None: - """ - Read incoming data from the socket and process events. - - """ - try: - super().recv_events() - finally: - # If the connection is closed during the handshake, unblock it. - self.request_rcvd.set() - - -class WebSocketServer: - """ - WebSocket server returned by :func:`serve`. - - This class mirrors the API of :class:`~socketserver.BaseServer`, notably the - :meth:`~socketserver.BaseServer.serve_forever` and - :meth:`~socketserver.BaseServer.shutdown` methods, as well as the context - manager protocol. - - Args: - socket: Server socket listening for new connections. - handler: Handler for one connection. Receives the socket and address - returned by :meth:`~socket.socket.accept`. - logger: Logger for this server. - - """ - - def __init__( - self, - socket: socket.socket, - handler: Callable[[socket.socket, Any], None], - logger: Optional[LoggerLike] = None, - ): - self.socket = socket - self.handler = handler - if logger is None: - logger = logging.getLogger("websockets.server") - self.logger = logger - if sys.platform != "win32": - self.shutdown_watcher, self.shutdown_notifier = os.pipe() - - def serve_forever(self) -> None: - """ - See :meth:`socketserver.BaseServer.serve_forever`. - - This method doesn't return. Calling :meth:`shutdown` from another thread - stops the server. - - Typical use:: - - with serve(...) as server: - server.serve_forever() - - """ - poller = selectors.DefaultSelector() - poller.register(self.socket, selectors.EVENT_READ) - if sys.platform != "win32": - poller.register(self.shutdown_watcher, selectors.EVENT_READ) - - while True: - poller.select() - try: - # If the socket is closed, this will raise an exception and exit - # the loop. So we don't need to check the return value of select(). - sock, addr = self.socket.accept() - except OSError: - break - thread = threading.Thread(target=self.handler, args=(sock, addr)) - thread.start() - - def shutdown(self) -> None: - """ - See :meth:`socketserver.BaseServer.shutdown`. - - """ - self.socket.close() - if sys.platform != "win32": - os.write(self.shutdown_notifier, b"x") - - def fileno(self) -> int: - """ - See :meth:`socketserver.BaseServer.fileno`. - - """ - return self.socket.fileno() - - def __enter__(self) -> WebSocketServer: - return self - - def __exit__( - self, - exc_type: Optional[Type[BaseException]], - exc_value: Optional[BaseException], - traceback: Optional[TracebackType], - ) -> None: - self.shutdown() - - -def serve( - handler: Callable[[ServerConnection], None], - host: Optional[str] = None, - port: Optional[int] = None, - *, - # TCP/TLS — unix and path are only for unix_serve() - sock: Optional[socket.socket] = None, - ssl_context: Optional[ssl.SSLContext] = None, - unix: bool = False, - path: Optional[str] = None, - # WebSocket - origins: Optional[Sequence[Optional[Origin]]] = None, - extensions: Optional[Sequence[ServerExtensionFactory]] = None, - subprotocols: Optional[Sequence[Subprotocol]] = None, - select_subprotocol: Optional[ - Callable[ - [ServerConnection, Sequence[Subprotocol]], - Optional[Subprotocol], - ] - ] = None, - process_request: Optional[ - Callable[ - [ServerConnection, Request], - Optional[Response], - ] - ] = None, - process_response: Optional[ - Callable[ - [ServerConnection, Request, Response], - Optional[Response], - ] - ] = None, - server_header: Optional[str] = USER_AGENT, - compression: Optional[str] = "deflate", - # Timeouts - open_timeout: Optional[float] = 10, - close_timeout: Optional[float] = 10, - # Limits - max_size: Optional[int] = 2**20, - # Logging - logger: Optional[LoggerLike] = None, - # Escape hatch for advanced customization - create_connection: Optional[Type[ServerConnection]] = None, -) -> WebSocketServer: - """ - Create a WebSocket server listening on ``host`` and ``port``. - - Whenever a client connects, the server creates a :class:`ServerConnection`, - performs the opening handshake, and delegates to the ``handler``. - - The handler receives a :class:`ServerConnection` instance, which you can use - to send and receive messages. - - Once the handler completes, either normally or with an exception, the server - performs the closing handshake and closes the connection. - - :class:`WebSocketServer` mirrors the API of - :class:`~socketserver.BaseServer`. Treat it as a context manager to ensure - that it will be closed and call the :meth:`~WebSocketServer.serve_forever` - method to serve requests:: - - def handler(websocket): - ... - - with websockets.sync.server.serve(handler, ...) as server: - server.serve_forever() - - Args: - handler: Connection handler. It receives the WebSocket connection, - which is a :class:`ServerConnection`, in argument. - host: Network interfaces the server binds to. - See :func:`~socket.create_server` for details. - port: TCP port the server listens on. - See :func:`~socket.create_server` for details. - sock: Preexisting TCP socket. ``sock`` replaces ``host`` and ``port``. - You may call :func:`socket.create_server` to create a suitable TCP - socket. - ssl_context: Configuration for enabling TLS on the connection. - origins: Acceptable values of the ``Origin`` header, for defending - against Cross-Site WebSocket Hijacking attacks. Include :obj:`None` - in the list if the lack of an origin is acceptable. - extensions: List of supported extensions, in order in which they - should be negotiated and run. - subprotocols: List of supported subprotocols, in order of decreasing - preference. - select_subprotocol: Callback for selecting a subprotocol among - those supported by the client and the server. It receives a - :class:`ServerConnection` (not a - :class:`~websockets.server.ServerProtocol`!) instance and a list of - subprotocols offered by the client. Other than the first argument, - it has the same behavior as the - :meth:`ServerProtocol.select_subprotocol - <websockets.server.ServerProtocol.select_subprotocol>` method. - process_request: Intercept the request during the opening handshake. - Return an HTTP response to force the response or :obj:`None` to - continue normally. When you force an HTTP 101 Continue response, - the handshake is successful. Else, the connection is aborted. - process_response: Intercept the response during the opening handshake. - Return an HTTP response to force the response or :obj:`None` to - continue normally. When you force an HTTP 101 Continue response, - the handshake is successful. Else, the connection is aborted. - server_header: Value of the ``Server`` response header. - It defaults to ``"Python/x.y.z websockets/X.Y"``. Setting it to - :obj:`None` removes the header. - compression: The "permessage-deflate" extension is enabled by default. - Set ``compression`` to :obj:`None` to disable it. See the - :doc:`compression guide <../../topics/compression>` for details. - open_timeout: Timeout for opening connections in seconds. - :obj:`None` disables the timeout. - close_timeout: Timeout for closing connections in seconds. - :obj:`None` disables the timeout. - max_size: Maximum size of incoming messages in bytes. - :obj:`None` disables the limit. - logger: Logger for this server. - It defaults to ``logging.getLogger("websockets.server")``. See the - :doc:`logging guide <../../topics/logging>` for details. - create_connection: Factory for the :class:`ServerConnection` managing - the connection. Set it to a wrapper or a subclass to customize - connection handling. - """ - - # Process parameters - - if subprotocols is not None: - validate_subprotocols(subprotocols) - - if compression == "deflate": - extensions = enable_server_permessage_deflate(extensions) - elif compression is not None: - raise ValueError(f"unsupported compression: {compression}") - - if create_connection is None: - create_connection = ServerConnection - - # Bind socket and listen - - if sock is None: - if unix: - if path is None: - raise TypeError("missing path argument") - sock = socket.create_server(path, family=socket.AF_UNIX) - else: - sock = socket.create_server((host, port)) - else: - if path is not None: - raise TypeError("path and sock arguments are incompatible") - - # Initialize TLS wrapper - - if ssl_context is not None: - sock = ssl_context.wrap_socket( - sock, - server_side=True, - # Delay TLS handshake until after we set a timeout on the socket. - do_handshake_on_connect=False, - ) - - # Define request handler - - def conn_handler(sock: socket.socket, addr: Any) -> None: - # Calculate timeouts on the TLS and WebSocket handshakes. - # The TLS timeout must be set on the socket, then removed - # to avoid conflicting with the WebSocket timeout in handshake(). - deadline = Deadline(open_timeout) - - try: - # Disable Nagle algorithm - - if not unix: - sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, True) - - # Perform TLS handshake - - if ssl_context is not None: - sock.settimeout(deadline.timeout()) - assert isinstance(sock, ssl.SSLSocket) # mypy cannot figure this out - sock.do_handshake() - sock.settimeout(None) - - # Create a closure so that select_subprotocol has access to self. - - protocol_select_subprotocol: Optional[ - Callable[ - [ServerProtocol, Sequence[Subprotocol]], - Optional[Subprotocol], - ] - ] = None - - if select_subprotocol is not None: - - def protocol_select_subprotocol( - protocol: ServerProtocol, - subprotocols: Sequence[Subprotocol], - ) -> Optional[Subprotocol]: - # mypy doesn't know that select_subprotocol is immutable. - assert select_subprotocol is not None - # Ensure this function is only used in the intended context. - assert protocol is connection.protocol - return select_subprotocol(connection, subprotocols) - - # Initialize WebSocket connection - - protocol = ServerProtocol( - origins=origins, - extensions=extensions, - subprotocols=subprotocols, - select_subprotocol=protocol_select_subprotocol, - state=CONNECTING, - max_size=max_size, - logger=logger, - ) - - # Initialize WebSocket protocol - - assert create_connection is not None # help mypy - connection = create_connection( - sock, - protocol, - close_timeout=close_timeout, - ) - # On failure, handshake() closes the socket, raises an exception, and - # logs it. - connection.handshake( - process_request, - process_response, - server_header, - deadline.timeout(), - ) - - except Exception: - sock.close() - return - - try: - handler(connection) - except Exception: - protocol.logger.error("connection handler failed", exc_info=True) - connection.close(CloseCode.INTERNAL_ERROR) - else: - connection.close() - - # Initialize server - - return WebSocketServer(sock, conn_handler, logger) - - -def unix_serve( - handler: Callable[[ServerConnection], Any], - path: Optional[str] = None, - **kwargs: Any, -) -> WebSocketServer: - """ - Create a WebSocket server listening on a Unix socket. - - This function is identical to :func:`serve`, except the ``host`` and - ``port`` arguments are replaced by ``path``. It's only available on Unix. - - It's useful for deploying a server behind a reverse proxy such as nginx. - - Args: - handler: Connection handler. It receives the WebSocket connection, - which is a :class:`ServerConnection`, in argument. - path: File system path to the Unix socket. - - """ - return serve(handler, path=path, unix=True, **kwargs) diff --git a/venv/lib/python3.11/site-packages/websockets/sync/utils.py b/venv/lib/python3.11/site-packages/websockets/sync/utils.py deleted file mode 100644 index 471f32e..0000000 --- a/venv/lib/python3.11/site-packages/websockets/sync/utils.py +++ /dev/null @@ -1,46 +0,0 @@ -from __future__ import annotations - -import time -from typing import Optional - - -__all__ = ["Deadline"] - - -class Deadline: - """ - Manage timeouts across multiple steps. - - Args: - timeout: Time available in seconds or :obj:`None` if there is no limit. - - """ - - def __init__(self, timeout: Optional[float]) -> None: - self.deadline: Optional[float] - if timeout is None: - self.deadline = None - else: - self.deadline = time.monotonic() + timeout - - def timeout(self, *, raise_if_elapsed: bool = True) -> Optional[float]: - """ - Calculate a timeout from a deadline. - - Args: - raise_if_elapsed (bool): Whether to raise :exc:`TimeoutError` - if the deadline lapsed. - - Raises: - TimeoutError: If the deadline lapsed. - - Returns: - Time left in seconds or :obj:`None` if there is no limit. - - """ - if self.deadline is None: - return None - timeout = self.deadline - time.monotonic() - if raise_if_elapsed and timeout <= 0: - raise TimeoutError("timed out") - return timeout diff --git a/venv/lib/python3.11/site-packages/websockets/typing.py b/venv/lib/python3.11/site-packages/websockets/typing.py deleted file mode 100644 index cc3e3ec..0000000 --- a/venv/lib/python3.11/site-packages/websockets/typing.py +++ /dev/null @@ -1,67 +0,0 @@ -from __future__ import annotations - -import http -import logging -from typing import List, NewType, Optional, Tuple, Union - - -__all__ = [ - "Data", - "LoggerLike", - "StatusLike", - "Origin", - "Subprotocol", - "ExtensionName", - "ExtensionParameter", -] - - -# Public types used in the signature of public APIs - -Data = Union[str, bytes] -"""Types supported in a WebSocket message: -:class:`str` for a Text_ frame, :class:`bytes` for a Binary_. - -.. _Text: https://www.rfc-editor.org/rfc/rfc6455.html#section-5.6 -.. _Binary : https://www.rfc-editor.org/rfc/rfc6455.html#section-5.6 - -""" - - -LoggerLike = Union[logging.Logger, logging.LoggerAdapter] -"""Types accepted where a :class:`~logging.Logger` is expected.""" - - -StatusLike = Union[http.HTTPStatus, int] -""" -Types accepted where an :class:`~http.HTTPStatus` is expected.""" - - -Origin = NewType("Origin", str) -"""Value of a ``Origin`` header.""" - - -Subprotocol = NewType("Subprotocol", str) -"""Subprotocol in a ``Sec-WebSocket-Protocol`` header.""" - - -ExtensionName = NewType("ExtensionName", str) -"""Name of a WebSocket extension.""" - - -ExtensionParameter = Tuple[str, Optional[str]] -"""Parameter of a WebSocket extension.""" - - -# Private types - -ExtensionHeader = Tuple[ExtensionName, List[ExtensionParameter]] -"""Extension in a ``Sec-WebSocket-Extensions`` header.""" - - -ConnectionOption = NewType("ConnectionOption", str) -"""Connection option in a ``Connection`` header.""" - - -UpgradeProtocol = NewType("UpgradeProtocol", str) -"""Upgrade protocol in an ``Upgrade`` header.""" diff --git a/venv/lib/python3.11/site-packages/websockets/uri.py b/venv/lib/python3.11/site-packages/websockets/uri.py deleted file mode 100644 index 385090f..0000000 --- a/venv/lib/python3.11/site-packages/websockets/uri.py +++ /dev/null @@ -1,108 +0,0 @@ -from __future__ import annotations - -import dataclasses -import urllib.parse -from typing import Optional, Tuple - -from . import exceptions - - -__all__ = ["parse_uri", "WebSocketURI"] - - -@dataclasses.dataclass -class WebSocketURI: - """ - WebSocket URI. - - Attributes: - secure: :obj:`True` for a ``wss`` URI, :obj:`False` for a ``ws`` URI. - host: Normalized to lower case. - port: Always set even if it's the default. - path: May be empty. - query: May be empty if the URI doesn't include a query component. - username: Available when the URI contains `User Information`_. - password: Available when the URI contains `User Information`_. - - .. _User Information: https://www.rfc-editor.org/rfc/rfc3986.html#section-3.2.1 - - """ - - secure: bool - host: str - port: int - path: str - query: str - username: Optional[str] = None - password: Optional[str] = None - - @property - def resource_name(self) -> str: - if self.path: - resource_name = self.path - else: - resource_name = "/" - if self.query: - resource_name += "?" + self.query - return resource_name - - @property - def user_info(self) -> Optional[Tuple[str, str]]: - if self.username is None: - return None - assert self.password is not None - return (self.username, self.password) - - -# All characters from the gen-delims and sub-delims sets in RFC 3987. -DELIMS = ":/?#[]@!$&'()*+,;=" - - -def parse_uri(uri: str) -> WebSocketURI: - """ - Parse and validate a WebSocket URI. - - Args: - uri: WebSocket URI. - - Returns: - WebSocketURI: Parsed WebSocket URI. - - Raises: - InvalidURI: if ``uri`` isn't a valid WebSocket URI. - - """ - parsed = urllib.parse.urlparse(uri) - if parsed.scheme not in ["ws", "wss"]: - raise exceptions.InvalidURI(uri, "scheme isn't ws or wss") - if parsed.hostname is None: - raise exceptions.InvalidURI(uri, "hostname isn't provided") - if parsed.fragment != "": - raise exceptions.InvalidURI(uri, "fragment identifier is meaningless") - - secure = parsed.scheme == "wss" - host = parsed.hostname - port = parsed.port or (443 if secure else 80) - path = parsed.path - query = parsed.query - username = parsed.username - password = parsed.password - # urllib.parse.urlparse accepts URLs with a username but without a - # password. This doesn't make sense for HTTP Basic Auth credentials. - if username is not None and password is None: - raise exceptions.InvalidURI(uri, "username provided without password") - - try: - uri.encode("ascii") - except UnicodeEncodeError: - # Input contains non-ASCII characters. - # It must be an IRI. Convert it to a URI. - host = host.encode("idna").decode() - path = urllib.parse.quote(path, safe=DELIMS) - query = urllib.parse.quote(query, safe=DELIMS) - if username is not None: - assert password is not None - username = urllib.parse.quote(username, safe=DELIMS) - password = urllib.parse.quote(password, safe=DELIMS) - - return WebSocketURI(secure, host, port, path, query, username, password) diff --git a/venv/lib/python3.11/site-packages/websockets/utils.py b/venv/lib/python3.11/site-packages/websockets/utils.py deleted file mode 100644 index c404049..0000000 --- a/venv/lib/python3.11/site-packages/websockets/utils.py +++ /dev/null @@ -1,51 +0,0 @@ -from __future__ import annotations - -import base64 -import hashlib -import secrets -import sys - - -__all__ = ["accept_key", "apply_mask"] - - -GUID = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11" - - -def generate_key() -> str: - """ - Generate a random key for the Sec-WebSocket-Key header. - - """ - key = secrets.token_bytes(16) - return base64.b64encode(key).decode() - - -def accept_key(key: str) -> str: - """ - Compute the value of the Sec-WebSocket-Accept header. - - Args: - key: value of the Sec-WebSocket-Key header. - - """ - sha1 = hashlib.sha1((key + GUID).encode()).digest() - return base64.b64encode(sha1).decode() - - -def apply_mask(data: bytes, mask: bytes) -> bytes: - """ - Apply masking to the data of a WebSocket message. - - Args: - data: data to mask. - mask: 4-bytes mask. - - """ - if len(mask) != 4: - raise ValueError("mask must contain 4 bytes") - - data_int = int.from_bytes(data, sys.byteorder) - mask_repeated = mask * (len(data) // 4) + mask[: len(data) % 4] - mask_int = int.from_bytes(mask_repeated, sys.byteorder) - return (data_int ^ mask_int).to_bytes(len(data), sys.byteorder) diff --git a/venv/lib/python3.11/site-packages/websockets/version.py b/venv/lib/python3.11/site-packages/websockets/version.py deleted file mode 100644 index d1c9945..0000000 --- a/venv/lib/python3.11/site-packages/websockets/version.py +++ /dev/null @@ -1,82 +0,0 @@ -from __future__ import annotations - -import importlib.metadata - - -__all__ = ["tag", "version", "commit"] - - -# ========= =========== =================== -# release development -# ========= =========== =================== -# tag X.Y X.Y (upcoming) -# version X.Y X.Y.dev1+g5678cde -# commit X.Y 5678cde -# ========= =========== =================== - - -# When tagging a release, set `released = True`. -# After tagging a release, set `released = False` and increment `tag`. - -released = True - -tag = version = commit = "12.0" - - -if not released: # pragma: no cover - import pathlib - import re - import subprocess - - def get_version(tag: str) -> str: - # Since setup.py executes the contents of src/websockets/version.py, - # __file__ can point to either of these two files. - file_path = pathlib.Path(__file__) - root_dir = file_path.parents[0 if file_path.name == "setup.py" else 2] - - # Read version from git if available. This prevents reading stale - # information from src/websockets.egg-info after building a sdist. - try: - description = subprocess.run( - ["git", "describe", "--dirty", "--tags", "--long"], - capture_output=True, - cwd=root_dir, - timeout=1, - check=True, - text=True, - ).stdout.strip() - # subprocess.run raises FileNotFoundError if git isn't on $PATH. - except ( - FileNotFoundError, - subprocess.CalledProcessError, - subprocess.TimeoutExpired, - ): - pass - else: - description_re = r"[0-9.]+-([0-9]+)-(g[0-9a-f]{7,}(?:-dirty)?)" - match = re.fullmatch(description_re, description) - assert match is not None - distance, remainder = match.groups() - remainder = remainder.replace("-", ".") # required by PEP 440 - return f"{tag}.dev{distance}+{remainder}" - - # Read version from package metadata if it is installed. - try: - return importlib.metadata.version("websockets") - except ImportError: - pass - - # Avoid crashing if the development version cannot be determined. - return f"{tag}.dev0+gunknown" - - version = get_version(tag) - - def get_commit(tag: str, version: str) -> str: - # Extract commit from version, falling back to tag if not available. - version_re = r"[0-9.]+\.dev[0-9]+\+g([0-9a-f]{7,}|unknown)(?:\.dirty)?" - match = re.fullmatch(version_re, version) - assert match is not None - (commit,) = match.groups() - return tag if commit == "unknown" else commit - - commit = get_commit(tag, version) |