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Diffstat (limited to 'venv/lib/python3.11/site-packages/httpx/_transports/default.py')
| -rw-r--r-- | venv/lib/python3.11/site-packages/httpx/_transports/default.py | 385 |
1 files changed, 385 insertions, 0 deletions
diff --git a/venv/lib/python3.11/site-packages/httpx/_transports/default.py b/venv/lib/python3.11/site-packages/httpx/_transports/default.py new file mode 100644 index 0000000..14476a3 --- /dev/null +++ b/venv/lib/python3.11/site-packages/httpx/_transports/default.py @@ -0,0 +1,385 @@ +""" +Custom transports, with nicely configured defaults. + +The following additional keyword arguments are currently supported by httpcore... + +* uds: str +* local_address: str +* retries: int + +Example usages... + +# Disable HTTP/2 on a single specific domain. +mounts = { + "all://": httpx.HTTPTransport(http2=True), + "all://*example.org": httpx.HTTPTransport() +} + +# Using advanced httpcore configuration, with connection retries. +transport = httpx.HTTPTransport(retries=1) +client = httpx.Client(transport=transport) + +# Using advanced httpcore configuration, with unix domain sockets. +transport = httpx.HTTPTransport(uds="socket.uds") +client = httpx.Client(transport=transport) +""" +from __future__ import annotations + +import contextlib +import typing +from types import TracebackType + +import httpcore + +from .._config import DEFAULT_LIMITS, Limits, Proxy, create_ssl_context +from .._exceptions import ( + ConnectError, + ConnectTimeout, + LocalProtocolError, + NetworkError, + PoolTimeout, + ProtocolError, + ProxyError, + ReadError, + ReadTimeout, + RemoteProtocolError, + TimeoutException, + UnsupportedProtocol, + WriteError, + WriteTimeout, +) +from .._models import Request, Response +from .._types import AsyncByteStream, CertTypes, ProxyTypes, SyncByteStream, VerifyTypes +from .._urls import URL +from .base import AsyncBaseTransport, BaseTransport + +T = typing.TypeVar("T", bound="HTTPTransport") +A = typing.TypeVar("A", bound="AsyncHTTPTransport") + +SOCKET_OPTION = typing.Union[ + typing.Tuple[int, int, int], + typing.Tuple[int, int, typing.Union[bytes, bytearray]], + typing.Tuple[int, int, None, int], +] + + +@contextlib.contextmanager +def map_httpcore_exceptions() -> typing.Iterator[None]: + try: + yield + except Exception as exc: + mapped_exc = None + + for from_exc, to_exc in HTTPCORE_EXC_MAP.items(): + if not isinstance(exc, from_exc): + continue + # We want to map to the most specific exception we can find. + # Eg if `exc` is an `httpcore.ReadTimeout`, we want to map to + # `httpx.ReadTimeout`, not just `httpx.TimeoutException`. + if mapped_exc is None or issubclass(to_exc, mapped_exc): + mapped_exc = to_exc + + if mapped_exc is None: # pragma: no cover + raise + + message = str(exc) + raise mapped_exc(message) from exc + + +HTTPCORE_EXC_MAP = { + httpcore.TimeoutException: TimeoutException, + httpcore.ConnectTimeout: ConnectTimeout, + httpcore.ReadTimeout: ReadTimeout, + httpcore.WriteTimeout: WriteTimeout, + httpcore.PoolTimeout: PoolTimeout, + httpcore.NetworkError: NetworkError, + httpcore.ConnectError: ConnectError, + httpcore.ReadError: ReadError, + httpcore.WriteError: WriteError, + httpcore.ProxyError: ProxyError, + httpcore.UnsupportedProtocol: UnsupportedProtocol, + httpcore.ProtocolError: ProtocolError, + httpcore.LocalProtocolError: LocalProtocolError, + httpcore.RemoteProtocolError: RemoteProtocolError, +} + + +class ResponseStream(SyncByteStream): + def __init__(self, httpcore_stream: typing.Iterable[bytes]) -> None: + self._httpcore_stream = httpcore_stream + + def __iter__(self) -> typing.Iterator[bytes]: + with map_httpcore_exceptions(): + for part in self._httpcore_stream: + yield part + + def close(self) -> None: + if hasattr(self._httpcore_stream, "close"): + self._httpcore_stream.close() + + +class HTTPTransport(BaseTransport): + def __init__( + self, + verify: VerifyTypes = True, + cert: CertTypes | None = None, + http1: bool = True, + http2: bool = False, + limits: Limits = DEFAULT_LIMITS, + trust_env: bool = True, + proxy: ProxyTypes | None = None, + uds: str | None = None, + local_address: str | None = None, + retries: int = 0, + socket_options: typing.Iterable[SOCKET_OPTION] | None = None, + ) -> None: + ssl_context = create_ssl_context(verify=verify, cert=cert, trust_env=trust_env) + proxy = Proxy(url=proxy) if isinstance(proxy, (str, URL)) else proxy + + if proxy is None: + self._pool = httpcore.ConnectionPool( + ssl_context=ssl_context, + max_connections=limits.max_connections, + max_keepalive_connections=limits.max_keepalive_connections, + keepalive_expiry=limits.keepalive_expiry, + http1=http1, + http2=http2, + uds=uds, + local_address=local_address, + retries=retries, + socket_options=socket_options, + ) + elif proxy.url.scheme in ("http", "https"): + self._pool = httpcore.HTTPProxy( + proxy_url=httpcore.URL( + scheme=proxy.url.raw_scheme, + host=proxy.url.raw_host, + port=proxy.url.port, + target=proxy.url.raw_path, + ), + proxy_auth=proxy.raw_auth, + proxy_headers=proxy.headers.raw, + ssl_context=ssl_context, + proxy_ssl_context=proxy.ssl_context, + max_connections=limits.max_connections, + max_keepalive_connections=limits.max_keepalive_connections, + keepalive_expiry=limits.keepalive_expiry, + http1=http1, + http2=http2, + socket_options=socket_options, + ) + elif proxy.url.scheme == "socks5": + try: + import socksio # noqa + except ImportError: # pragma: no cover + raise ImportError( + "Using SOCKS proxy, but the 'socksio' package is not installed. " + "Make sure to install httpx using `pip install httpx[socks]`." + ) from None + + self._pool = httpcore.SOCKSProxy( + proxy_url=httpcore.URL( + scheme=proxy.url.raw_scheme, + host=proxy.url.raw_host, + port=proxy.url.port, + target=proxy.url.raw_path, + ), + proxy_auth=proxy.raw_auth, + ssl_context=ssl_context, + max_connections=limits.max_connections, + max_keepalive_connections=limits.max_keepalive_connections, + keepalive_expiry=limits.keepalive_expiry, + http1=http1, + http2=http2, + ) + else: # pragma: no cover + raise ValueError( + "Proxy protocol must be either 'http', 'https', or 'socks5'," + f" but got {proxy.url.scheme!r}." + ) + + def __enter__(self: T) -> T: # Use generics for subclass support. + self._pool.__enter__() + return self + + def __exit__( + self, + exc_type: type[BaseException] | None = None, + exc_value: BaseException | None = None, + traceback: TracebackType | None = None, + ) -> None: + with map_httpcore_exceptions(): + self._pool.__exit__(exc_type, exc_value, traceback) + + def handle_request( + self, + request: Request, + ) -> Response: + assert isinstance(request.stream, SyncByteStream) + + req = httpcore.Request( + method=request.method, + url=httpcore.URL( + scheme=request.url.raw_scheme, + host=request.url.raw_host, + port=request.url.port, + target=request.url.raw_path, + ), + headers=request.headers.raw, + content=request.stream, + extensions=request.extensions, + ) + with map_httpcore_exceptions(): + resp = self._pool.handle_request(req) + + assert isinstance(resp.stream, typing.Iterable) + + return Response( + status_code=resp.status, + headers=resp.headers, + stream=ResponseStream(resp.stream), + extensions=resp.extensions, + ) + + def close(self) -> None: + self._pool.close() + + +class AsyncResponseStream(AsyncByteStream): + def __init__(self, httpcore_stream: typing.AsyncIterable[bytes]) -> None: + self._httpcore_stream = httpcore_stream + + async def __aiter__(self) -> typing.AsyncIterator[bytes]: + with map_httpcore_exceptions(): + async for part in self._httpcore_stream: + yield part + + async def aclose(self) -> None: + if hasattr(self._httpcore_stream, "aclose"): + await self._httpcore_stream.aclose() + + +class AsyncHTTPTransport(AsyncBaseTransport): + def __init__( + self, + verify: VerifyTypes = True, + cert: CertTypes | None = None, + http1: bool = True, + http2: bool = False, + limits: Limits = DEFAULT_LIMITS, + trust_env: bool = True, + proxy: ProxyTypes | None = None, + uds: str | None = None, + local_address: str | None = None, + retries: int = 0, + socket_options: typing.Iterable[SOCKET_OPTION] | None = None, + ) -> None: + ssl_context = create_ssl_context(verify=verify, cert=cert, trust_env=trust_env) + proxy = Proxy(url=proxy) if isinstance(proxy, (str, URL)) else proxy + + if proxy is None: + self._pool = httpcore.AsyncConnectionPool( + ssl_context=ssl_context, + max_connections=limits.max_connections, + max_keepalive_connections=limits.max_keepalive_connections, + keepalive_expiry=limits.keepalive_expiry, + http1=http1, + http2=http2, + uds=uds, + local_address=local_address, + retries=retries, + socket_options=socket_options, + ) + elif proxy.url.scheme in ("http", "https"): + self._pool = httpcore.AsyncHTTPProxy( + proxy_url=httpcore.URL( + scheme=proxy.url.raw_scheme, + host=proxy.url.raw_host, + port=proxy.url.port, + target=proxy.url.raw_path, + ), + proxy_auth=proxy.raw_auth, + proxy_headers=proxy.headers.raw, + ssl_context=ssl_context, + max_connections=limits.max_connections, + max_keepalive_connections=limits.max_keepalive_connections, + keepalive_expiry=limits.keepalive_expiry, + http1=http1, + http2=http2, + socket_options=socket_options, + ) + elif proxy.url.scheme == "socks5": + try: + import socksio # noqa + except ImportError: # pragma: no cover + raise ImportError( + "Using SOCKS proxy, but the 'socksio' package is not installed. " + "Make sure to install httpx using `pip install httpx[socks]`." + ) from None + + self._pool = httpcore.AsyncSOCKSProxy( + proxy_url=httpcore.URL( + scheme=proxy.url.raw_scheme, + host=proxy.url.raw_host, + port=proxy.url.port, + target=proxy.url.raw_path, + ), + proxy_auth=proxy.raw_auth, + ssl_context=ssl_context, + max_connections=limits.max_connections, + max_keepalive_connections=limits.max_keepalive_connections, + keepalive_expiry=limits.keepalive_expiry, + http1=http1, + http2=http2, + ) + else: # pragma: no cover + raise ValueError( + "Proxy protocol must be either 'http', 'https', or 'socks5'," + " but got {proxy.url.scheme!r}." + ) + + async def __aenter__(self: A) -> A: # Use generics for subclass support. + await self._pool.__aenter__() + return self + + async def __aexit__( + self, + exc_type: type[BaseException] | None = None, + exc_value: BaseException | None = None, + traceback: TracebackType | None = None, + ) -> None: + with map_httpcore_exceptions(): + await self._pool.__aexit__(exc_type, exc_value, traceback) + + async def handle_async_request( + self, + request: Request, + ) -> Response: + assert isinstance(request.stream, AsyncByteStream) + + req = httpcore.Request( + method=request.method, + url=httpcore.URL( + scheme=request.url.raw_scheme, + host=request.url.raw_host, + port=request.url.port, + target=request.url.raw_path, + ), + headers=request.headers.raw, + content=request.stream, + extensions=request.extensions, + ) + with map_httpcore_exceptions(): + resp = await self._pool.handle_async_request(req) + + assert isinstance(resp.stream, typing.AsyncIterable) + + return Response( + status_code=resp.status, + headers=resp.headers, + stream=AsyncResponseStream(resp.stream), + extensions=resp.extensions, + ) + + async def aclose(self) -> None: + await self._pool.aclose() |