no venv

6 files changed, 0 insertions, 797 deletions

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
deleted 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
deleted 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
deleted 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