diff options
Diffstat (limited to '.venv/lib/python3.12/site-packages/aiohttp/client_proto.py')
| -rw-r--r-- | .venv/lib/python3.12/site-packages/aiohttp/client_proto.py | 308 |
1 files changed, 308 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/aiohttp/client_proto.py b/.venv/lib/python3.12/site-packages/aiohttp/client_proto.py new file mode 100644 index 00000000..2d64b3f3 --- /dev/null +++ b/.venv/lib/python3.12/site-packages/aiohttp/client_proto.py @@ -0,0 +1,308 @@ +import asyncio +from contextlib import suppress +from typing import Any, Optional, Tuple + +from .base_protocol import BaseProtocol +from .client_exceptions import ( + ClientOSError, + ClientPayloadError, + ServerDisconnectedError, + SocketTimeoutError, +) +from .helpers import ( + _EXC_SENTINEL, + EMPTY_BODY_STATUS_CODES, + BaseTimerContext, + set_exception, +) +from .http import HttpResponseParser, RawResponseMessage +from .http_exceptions import HttpProcessingError +from .streams import EMPTY_PAYLOAD, DataQueue, StreamReader + + +class ResponseHandler(BaseProtocol, DataQueue[Tuple[RawResponseMessage, StreamReader]]): + """Helper class to adapt between Protocol and StreamReader.""" + + def __init__(self, loop: asyncio.AbstractEventLoop) -> None: + BaseProtocol.__init__(self, loop=loop) + DataQueue.__init__(self, loop) + + self._should_close = False + + self._payload: Optional[StreamReader] = None + self._skip_payload = False + self._payload_parser = None + + self._timer = None + + self._tail = b"" + self._upgraded = False + self._parser: Optional[HttpResponseParser] = None + + self._read_timeout: Optional[float] = None + self._read_timeout_handle: Optional[asyncio.TimerHandle] = None + + self._timeout_ceil_threshold: Optional[float] = 5 + + @property + def upgraded(self) -> bool: + return self._upgraded + + @property + def should_close(self) -> bool: + return bool( + self._should_close + or (self._payload is not None and not self._payload.is_eof()) + or self._upgraded + or self._exception is not None + or self._payload_parser is not None + or self._buffer + or self._tail + ) + + def force_close(self) -> None: + self._should_close = True + + def close(self) -> None: + self._exception = None # Break cyclic references + transport = self.transport + if transport is not None: + transport.close() + self.transport = None + self._payload = None + self._drop_timeout() + + def is_connected(self) -> bool: + return self.transport is not None and not self.transport.is_closing() + + def connection_lost(self, exc: Optional[BaseException]) -> None: + self._drop_timeout() + + original_connection_error = exc + reraised_exc = original_connection_error + + connection_closed_cleanly = original_connection_error is None + + if self._payload_parser is not None: + with suppress(Exception): # FIXME: log this somehow? + self._payload_parser.feed_eof() + + uncompleted = None + if self._parser is not None: + try: + uncompleted = self._parser.feed_eof() + except Exception as underlying_exc: + if self._payload is not None: + client_payload_exc_msg = ( + f"Response payload is not completed: {underlying_exc !r}" + ) + if not connection_closed_cleanly: + client_payload_exc_msg = ( + f"{client_payload_exc_msg !s}. " + f"{original_connection_error !r}" + ) + set_exception( + self._payload, + ClientPayloadError(client_payload_exc_msg), + underlying_exc, + ) + + if not self.is_eof(): + if isinstance(original_connection_error, OSError): + reraised_exc = ClientOSError(*original_connection_error.args) + if connection_closed_cleanly: + reraised_exc = ServerDisconnectedError(uncompleted) + # assigns self._should_close to True as side effect, + # we do it anyway below + underlying_non_eof_exc = ( + _EXC_SENTINEL + if connection_closed_cleanly + else original_connection_error + ) + assert underlying_non_eof_exc is not None + assert reraised_exc is not None + self.set_exception(reraised_exc, underlying_non_eof_exc) + + self._should_close = True + self._parser = None + self._payload = None + self._payload_parser = None + self._reading_paused = False + + super().connection_lost(reraised_exc) + + def eof_received(self) -> None: + # should call parser.feed_eof() most likely + self._drop_timeout() + + def pause_reading(self) -> None: + super().pause_reading() + self._drop_timeout() + + def resume_reading(self) -> None: + super().resume_reading() + self._reschedule_timeout() + + def set_exception( + self, + exc: BaseException, + exc_cause: BaseException = _EXC_SENTINEL, + ) -> None: + self._should_close = True + self._drop_timeout() + super().set_exception(exc, exc_cause) + + def set_parser(self, parser: Any, payload: Any) -> None: + # TODO: actual types are: + # parser: WebSocketReader + # payload: WebSocketDataQueue + # but they are not generi enough + # Need an ABC for both types + self._payload = payload + self._payload_parser = parser + + self._drop_timeout() + + if self._tail: + data, self._tail = self._tail, b"" + self.data_received(data) + + def set_response_params( + self, + *, + timer: Optional[BaseTimerContext] = None, + skip_payload: bool = False, + read_until_eof: bool = False, + auto_decompress: bool = True, + read_timeout: Optional[float] = None, + read_bufsize: int = 2**16, + timeout_ceil_threshold: float = 5, + max_line_size: int = 8190, + max_field_size: int = 8190, + ) -> None: + self._skip_payload = skip_payload + + self._read_timeout = read_timeout + + self._timeout_ceil_threshold = timeout_ceil_threshold + + self._parser = HttpResponseParser( + self, + self._loop, + read_bufsize, + timer=timer, + payload_exception=ClientPayloadError, + response_with_body=not skip_payload, + read_until_eof=read_until_eof, + auto_decompress=auto_decompress, + max_line_size=max_line_size, + max_field_size=max_field_size, + ) + + if self._tail: + data, self._tail = self._tail, b"" + self.data_received(data) + + def _drop_timeout(self) -> None: + if self._read_timeout_handle is not None: + self._read_timeout_handle.cancel() + self._read_timeout_handle = None + + def _reschedule_timeout(self) -> None: + timeout = self._read_timeout + if self._read_timeout_handle is not None: + self._read_timeout_handle.cancel() + + if timeout: + self._read_timeout_handle = self._loop.call_later( + timeout, self._on_read_timeout + ) + else: + self._read_timeout_handle = None + + def start_timeout(self) -> None: + self._reschedule_timeout() + + @property + def read_timeout(self) -> Optional[float]: + return self._read_timeout + + @read_timeout.setter + def read_timeout(self, read_timeout: Optional[float]) -> None: + self._read_timeout = read_timeout + + def _on_read_timeout(self) -> None: + exc = SocketTimeoutError("Timeout on reading data from socket") + self.set_exception(exc) + if self._payload is not None: + set_exception(self._payload, exc) + + def data_received(self, data: bytes) -> None: + self._reschedule_timeout() + + if not data: + return + + # custom payload parser - currently always WebSocketReader + if self._payload_parser is not None: + eof, tail = self._payload_parser.feed_data(data) + if eof: + self._payload = None + self._payload_parser = None + + if tail: + self.data_received(tail) + return + + if self._upgraded or self._parser is None: + # i.e. websocket connection, websocket parser is not set yet + self._tail += data + return + + # parse http messages + try: + messages, upgraded, tail = self._parser.feed_data(data) + except BaseException as underlying_exc: + if self.transport is not None: + # connection.release() could be called BEFORE + # data_received(), the transport is already + # closed in this case + self.transport.close() + # should_close is True after the call + if isinstance(underlying_exc, HttpProcessingError): + exc = HttpProcessingError( + code=underlying_exc.code, + message=underlying_exc.message, + headers=underlying_exc.headers, + ) + else: + exc = HttpProcessingError() + self.set_exception(exc, underlying_exc) + return + + self._upgraded = upgraded + + payload: Optional[StreamReader] = None + for message, payload in messages: + if message.should_close: + self._should_close = True + + self._payload = payload + + if self._skip_payload or message.code in EMPTY_BODY_STATUS_CODES: + self.feed_data((message, EMPTY_PAYLOAD), 0) + else: + self.feed_data((message, payload), 0) + + if payload is not None: + # new message(s) was processed + # register timeout handler unsubscribing + # either on end-of-stream or immediately for + # EMPTY_PAYLOAD + if payload is not EMPTY_PAYLOAD: + payload.on_eof(self._drop_timeout) + else: + self._drop_timeout() + + if upgraded and tail: + self.data_received(tail) |