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https://gitlab.com/MoonTestUse1/AdministrationItDepartmens.git
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Initial commit
This commit is contained in:
MoonTestUse1
19
venv/Lib/site-packages/uvicorn/protocols/websockets/auto.py
Normal file
19
venv/Lib/site-packages/uvicorn/protocols/websockets/auto.py
Normal file
@@ -0,0 +1,19 @@
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import asyncio
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import typing
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AutoWebSocketsProtocol: typing.Optional[typing.Callable[..., asyncio.Protocol]]
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try:
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import websockets # noqa
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except ImportError: # pragma: no cover
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try:
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import wsproto # noqa
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except ImportError:
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AutoWebSocketsProtocol = None
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else:
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from uvicorn.protocols.websockets.wsproto_impl import WSProtocol
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AutoWebSocketsProtocol = WSProtocol
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else:
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from uvicorn.protocols.websockets.websockets_impl import WebSocketProtocol
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AutoWebSocketsProtocol = WebSocketProtocol
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@@ -0,0 +1,417 @@
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from __future__ import annotations
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import asyncio
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import http
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import logging
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from typing import (
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Any,
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List,
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Literal,
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Optional,
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Sequence,
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Tuple,
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Union,
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cast,
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)
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from urllib.parse import unquote
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import websockets
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from websockets.datastructures import Headers
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from websockets.exceptions import ConnectionClosed
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from websockets.extensions.permessage_deflate import ServerPerMessageDeflateFactory
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from websockets.legacy.server import HTTPResponse
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from websockets.server import WebSocketServerProtocol
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from websockets.typing import Subprotocol
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from uvicorn._types import (
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ASGISendEvent,
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WebSocketAcceptEvent,
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WebSocketCloseEvent,
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WebSocketConnectEvent,
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WebSocketDisconnectEvent,
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WebSocketReceiveEvent,
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WebSocketResponseBodyEvent,
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WebSocketResponseStartEvent,
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WebSocketScope,
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WebSocketSendEvent,
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)
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from uvicorn.config import Config
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from uvicorn.logging import TRACE_LOG_LEVEL
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from uvicorn.protocols.utils import (
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ClientDisconnected,
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get_local_addr,
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get_path_with_query_string,
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get_remote_addr,
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is_ssl,
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)
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from uvicorn.server import ServerState
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class Server:
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closing = False
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def register(self, ws: WebSocketServerProtocol) -> None:
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pass
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def unregister(self, ws: WebSocketServerProtocol) -> None:
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pass
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def is_serving(self) -> bool:
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return not self.closing
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class WebSocketProtocol(WebSocketServerProtocol):
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extra_headers: List[Tuple[str, str]]
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def __init__(
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self,
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config: Config,
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server_state: ServerState,
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app_state: dict[str, Any],
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_loop: asyncio.AbstractEventLoop | None = None,
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):
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if not config.loaded:
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config.load()
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self.config = config
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self.app = config.loaded_app
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self.loop = _loop or asyncio.get_event_loop()
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self.root_path = config.root_path
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self.app_state = app_state
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# Shared server state
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self.connections = server_state.connections
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self.tasks = server_state.tasks
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# Connection state
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self.transport: asyncio.Transport = None # type: ignore[assignment]
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self.server: tuple[str, int] | None = None
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self.client: tuple[str, int] | None = None
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self.scheme: Literal["wss", "ws"] = None # type: ignore[assignment]
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# Connection events
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self.scope: WebSocketScope
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self.handshake_started_event = asyncio.Event()
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self.handshake_completed_event = asyncio.Event()
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self.closed_event = asyncio.Event()
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self.initial_response: HTTPResponse | None = None
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self.connect_sent = False
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self.lost_connection_before_handshake = False
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self.accepted_subprotocol: Subprotocol | None = None
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self.ws_server: Server = Server() # type: ignore[assignment]
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extensions = []
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if self.config.ws_per_message_deflate:
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extensions.append(ServerPerMessageDeflateFactory())
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super().__init__(
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ws_handler=self.ws_handler,
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ws_server=self.ws_server, # type: ignore[arg-type]
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max_size=self.config.ws_max_size,
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max_queue=self.config.ws_max_queue,
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ping_interval=self.config.ws_ping_interval,
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ping_timeout=self.config.ws_ping_timeout,
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extensions=extensions,
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logger=logging.getLogger("uvicorn.error"),
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)
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self.server_header = None
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self.extra_headers = [
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(name.decode("latin-1"), value.decode("latin-1"))
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for name, value in server_state.default_headers
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]
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def connection_made( # type: ignore[override]
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self, transport: asyncio.Transport
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) -> None:
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self.connections.add(self)
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self.transport = transport
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self.server = get_local_addr(transport)
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self.client = get_remote_addr(transport)
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self.scheme = "wss" if is_ssl(transport) else "ws"
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if self.logger.isEnabledFor(TRACE_LOG_LEVEL):
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prefix = "%s:%d - " % self.client if self.client else ""
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self.logger.log(TRACE_LOG_LEVEL, "%sWebSocket connection made", prefix)
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super().connection_made(transport)
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def connection_lost(self, exc: Optional[Exception]) -> None:
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self.connections.remove(self)
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if self.logger.isEnabledFor(TRACE_LOG_LEVEL):
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prefix = "%s:%d - " % self.client if self.client else ""
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self.logger.log(TRACE_LOG_LEVEL, "%sWebSocket connection lost", prefix)
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self.lost_connection_before_handshake = (
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not self.handshake_completed_event.is_set()
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)
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self.handshake_completed_event.set()
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super().connection_lost(exc)
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if exc is None:
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self.transport.close()
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def shutdown(self) -> None:
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self.ws_server.closing = True
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if self.handshake_completed_event.is_set():
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self.fail_connection(1012)
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else:
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self.send_500_response()
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self.transport.close()
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def on_task_complete(self, task: asyncio.Task) -> None:
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self.tasks.discard(task)
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async def process_request(
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self, path: str, headers: Headers
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) -> Optional[HTTPResponse]:
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"""
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This hook is called to determine if the websocket should return
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an HTTP response and close.
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Our behavior here is to start the ASGI application, and then wait
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for either `accept` or `close` in order to determine if we should
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close the connection.
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"""
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path_portion, _, query_string = path.partition("?")
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websockets.legacy.handshake.check_request(headers)
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subprotocols = []
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for header in headers.get_all("Sec-WebSocket-Protocol"):
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subprotocols.extend([token.strip() for token in header.split(",")])
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asgi_headers = [
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(name.encode("ascii"), value.encode("ascii", errors="surrogateescape"))
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for name, value in headers.raw_items()
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]
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path = unquote(path_portion)
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full_path = self.root_path + path
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full_raw_path = self.root_path.encode("ascii") + path_portion.encode("ascii")
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self.scope = {
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"type": "websocket",
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"asgi": {"version": self.config.asgi_version, "spec_version": "2.4"},
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"http_version": "1.1",
|
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"scheme": self.scheme,
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"server": self.server,
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"client": self.client,
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"root_path": self.root_path,
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"path": full_path,
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"raw_path": full_raw_path,
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"query_string": query_string.encode("ascii"),
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"headers": asgi_headers,
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"subprotocols": subprotocols,
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"state": self.app_state.copy(),
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"extensions": {"websocket.http.response": {}},
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}
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task = self.loop.create_task(self.run_asgi())
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task.add_done_callback(self.on_task_complete)
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self.tasks.add(task)
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await self.handshake_started_event.wait()
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return self.initial_response
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|
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def process_subprotocol(
|
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self, headers: Headers, available_subprotocols: Optional[Sequence[Subprotocol]]
|
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) -> Optional[Subprotocol]:
|
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"""
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We override the standard 'process_subprotocol' behavior here so that
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we return whatever subprotocol is sent in the 'accept' message.
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"""
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return self.accepted_subprotocol
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def send_500_response(self) -> None:
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msg = b"Internal Server Error"
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content = [
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b"HTTP/1.1 500 Internal Server Error\r\n"
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b"content-type: text/plain; charset=utf-8\r\n",
|
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b"content-length: " + str(len(msg)).encode("ascii") + b"\r\n",
|
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b"connection: close\r\n",
|
||||
b"\r\n",
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msg,
|
||||
]
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self.transport.write(b"".join(content))
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# Allow handler task to terminate cleanly, as websockets doesn't cancel it by
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# itself (see https://github.com/encode/uvicorn/issues/920)
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self.handshake_started_event.set()
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|
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async def ws_handler( # type: ignore[override]
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self, protocol: WebSocketServerProtocol, path: str
|
||||
) -> Any:
|
||||
"""
|
||||
This is the main handler function for the 'websockets' implementation
|
||||
to call into. We just wait for close then return, and instead allow
|
||||
'send' and 'receive' events to drive the flow.
|
||||
"""
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||||
self.handshake_completed_event.set()
|
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await self.wait_closed()
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||||
|
||||
async def run_asgi(self) -> None:
|
||||
"""
|
||||
Wrapper around the ASGI callable, handling exceptions and unexpected
|
||||
termination states.
|
||||
"""
|
||||
try:
|
||||
result = await self.app(self.scope, self.asgi_receive, self.asgi_send)
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||||
except ClientDisconnected:
|
||||
self.closed_event.set()
|
||||
self.transport.close()
|
||||
except BaseException as exc:
|
||||
self.closed_event.set()
|
||||
msg = "Exception in ASGI application\n"
|
||||
self.logger.error(msg, exc_info=exc)
|
||||
if not self.handshake_started_event.is_set():
|
||||
self.send_500_response()
|
||||
else:
|
||||
await self.handshake_completed_event.wait()
|
||||
self.transport.close()
|
||||
else:
|
||||
self.closed_event.set()
|
||||
if not self.handshake_started_event.is_set():
|
||||
msg = "ASGI callable returned without sending handshake."
|
||||
self.logger.error(msg)
|
||||
self.send_500_response()
|
||||
self.transport.close()
|
||||
elif result is not None:
|
||||
msg = "ASGI callable should return None, but returned '%s'."
|
||||
self.logger.error(msg, result)
|
||||
await self.handshake_completed_event.wait()
|
||||
self.transport.close()
|
||||
|
||||
async def asgi_send(self, message: "ASGISendEvent") -> None:
|
||||
message_type = message["type"]
|
||||
|
||||
if not self.handshake_started_event.is_set():
|
||||
if message_type == "websocket.accept":
|
||||
message = cast("WebSocketAcceptEvent", message)
|
||||
self.logger.info(
|
||||
'%s - "WebSocket %s" [accepted]',
|
||||
self.scope["client"],
|
||||
get_path_with_query_string(self.scope),
|
||||
)
|
||||
self.initial_response = None
|
||||
self.accepted_subprotocol = cast(
|
||||
Optional[Subprotocol], message.get("subprotocol")
|
||||
)
|
||||
if "headers" in message:
|
||||
self.extra_headers.extend(
|
||||
# ASGI spec requires bytes
|
||||
# But for compatibility we need to convert it to strings
|
||||
(name.decode("latin-1"), value.decode("latin-1"))
|
||||
for name, value in message["headers"]
|
||||
)
|
||||
self.handshake_started_event.set()
|
||||
|
||||
elif message_type == "websocket.close":
|
||||
message = cast("WebSocketCloseEvent", message)
|
||||
self.logger.info(
|
||||
'%s - "WebSocket %s" 403',
|
||||
self.scope["client"],
|
||||
get_path_with_query_string(self.scope),
|
||||
)
|
||||
self.initial_response = (http.HTTPStatus.FORBIDDEN, [], b"")
|
||||
self.handshake_started_event.set()
|
||||
self.closed_event.set()
|
||||
|
||||
elif message_type == "websocket.http.response.start":
|
||||
message = cast("WebSocketResponseStartEvent", message)
|
||||
self.logger.info(
|
||||
'%s - "WebSocket %s" %d',
|
||||
self.scope["client"],
|
||||
get_path_with_query_string(self.scope),
|
||||
message["status"],
|
||||
)
|
||||
# websockets requires the status to be an enum. look it up.
|
||||
status = http.HTTPStatus(message["status"])
|
||||
headers = [
|
||||
(name.decode("latin-1"), value.decode("latin-1"))
|
||||
for name, value in message.get("headers", [])
|
||||
]
|
||||
self.initial_response = (status, headers, b"")
|
||||
self.handshake_started_event.set()
|
||||
|
||||
else:
|
||||
msg = (
|
||||
"Expected ASGI message 'websocket.accept', 'websocket.close', "
|
||||
"or 'websocket.http.response.start' but got '%s'."
|
||||
)
|
||||
raise RuntimeError(msg % message_type)
|
||||
|
||||
elif not self.closed_event.is_set() and self.initial_response is None:
|
||||
await self.handshake_completed_event.wait()
|
||||
|
||||
try:
|
||||
if message_type == "websocket.send":
|
||||
message = cast("WebSocketSendEvent", message)
|
||||
bytes_data = message.get("bytes")
|
||||
text_data = message.get("text")
|
||||
data = text_data if bytes_data is None else bytes_data
|
||||
await self.send(data) # type: ignore[arg-type]
|
||||
|
||||
elif message_type == "websocket.close":
|
||||
message = cast("WebSocketCloseEvent", message)
|
||||
code = message.get("code", 1000)
|
||||
reason = message.get("reason", "") or ""
|
||||
await self.close(code, reason)
|
||||
self.closed_event.set()
|
||||
|
||||
else:
|
||||
msg = (
|
||||
"Expected ASGI message 'websocket.send' or 'websocket.close',"
|
||||
" but got '%s'."
|
||||
)
|
||||
raise RuntimeError(msg % message_type)
|
||||
except ConnectionClosed as exc:
|
||||
raise ClientDisconnected from exc
|
||||
|
||||
elif self.initial_response is not None:
|
||||
if message_type == "websocket.http.response.body":
|
||||
message = cast("WebSocketResponseBodyEvent", message)
|
||||
body = self.initial_response[2] + message["body"]
|
||||
self.initial_response = self.initial_response[:2] + (body,)
|
||||
if not message.get("more_body", False):
|
||||
self.closed_event.set()
|
||||
else:
|
||||
msg = (
|
||||
"Expected ASGI message 'websocket.http.response.body' "
|
||||
"but got '%s'."
|
||||
)
|
||||
raise RuntimeError(msg % message_type)
|
||||
|
||||
else:
|
||||
msg = (
|
||||
"Unexpected ASGI message '%s', after sending 'websocket.close' "
|
||||
"or response already completed."
|
||||
)
|
||||
raise RuntimeError(msg % message_type)
|
||||
|
||||
async def asgi_receive(
|
||||
self,
|
||||
) -> Union[
|
||||
"WebSocketDisconnectEvent", "WebSocketConnectEvent", "WebSocketReceiveEvent"
|
||||
]:
|
||||
if not self.connect_sent:
|
||||
self.connect_sent = True
|
||||
return {"type": "websocket.connect"}
|
||||
|
||||
await self.handshake_completed_event.wait()
|
||||
|
||||
if self.lost_connection_before_handshake:
|
||||
# If the handshake failed or the app closed before handshake completion,
|
||||
# use 1006 Abnormal Closure.
|
||||
return {"type": "websocket.disconnect", "code": 1006}
|
||||
|
||||
if self.closed_event.is_set():
|
||||
return {"type": "websocket.disconnect", "code": 1005}
|
||||
|
||||
try:
|
||||
data = await self.recv()
|
||||
except ConnectionClosed as exc:
|
||||
self.closed_event.set()
|
||||
if self.ws_server.closing:
|
||||
return {"type": "websocket.disconnect", "code": 1012}
|
||||
return {"type": "websocket.disconnect", "code": exc.code}
|
||||
|
||||
if isinstance(data, str):
|
||||
return {"type": "websocket.receive", "text": data}
|
||||
return {"type": "websocket.receive", "bytes": data}
|
||||
@@ -0,0 +1,397 @@
|
||||
from __future__ import annotations
|
||||
|
||||
import asyncio
|
||||
import logging
|
||||
import typing
|
||||
from typing import Literal
|
||||
from urllib.parse import unquote
|
||||
|
||||
import wsproto
|
||||
from wsproto import ConnectionType, events
|
||||
from wsproto.connection import ConnectionState
|
||||
from wsproto.extensions import Extension, PerMessageDeflate
|
||||
from wsproto.utilities import LocalProtocolError, RemoteProtocolError
|
||||
|
||||
from uvicorn._types import (
|
||||
ASGISendEvent,
|
||||
WebSocketAcceptEvent,
|
||||
WebSocketCloseEvent,
|
||||
WebSocketEvent,
|
||||
WebSocketResponseBodyEvent,
|
||||
WebSocketResponseStartEvent,
|
||||
WebSocketScope,
|
||||
WebSocketSendEvent,
|
||||
)
|
||||
from uvicorn.config import Config
|
||||
from uvicorn.logging import TRACE_LOG_LEVEL
|
||||
from uvicorn.protocols.utils import (
|
||||
ClientDisconnected,
|
||||
get_local_addr,
|
||||
get_path_with_query_string,
|
||||
get_remote_addr,
|
||||
is_ssl,
|
||||
)
|
||||
from uvicorn.server import ServerState
|
||||
|
||||
|
||||
class WSProtocol(asyncio.Protocol):
|
||||
def __init__(
|
||||
self,
|
||||
config: Config,
|
||||
server_state: ServerState,
|
||||
app_state: dict[str, typing.Any],
|
||||
_loop: asyncio.AbstractEventLoop | None = None,
|
||||
) -> None:
|
||||
if not config.loaded:
|
||||
config.load()
|
||||
|
||||
self.config = config
|
||||
self.app = config.loaded_app
|
||||
self.loop = _loop or asyncio.get_event_loop()
|
||||
self.logger = logging.getLogger("uvicorn.error")
|
||||
self.root_path = config.root_path
|
||||
self.app_state = app_state
|
||||
|
||||
# Shared server state
|
||||
self.connections = server_state.connections
|
||||
self.tasks = server_state.tasks
|
||||
self.default_headers = server_state.default_headers
|
||||
|
||||
# Connection state
|
||||
self.transport: asyncio.Transport = None # type: ignore[assignment]
|
||||
self.server: tuple[str, int] | None = None
|
||||
self.client: tuple[str, int] | None = None
|
||||
self.scheme: Literal["wss", "ws"] = None # type: ignore[assignment]
|
||||
|
||||
# WebSocket state
|
||||
self.queue: asyncio.Queue[WebSocketEvent] = asyncio.Queue()
|
||||
self.handshake_complete = False
|
||||
self.close_sent = False
|
||||
|
||||
# Rejection state
|
||||
self.response_started = False
|
||||
|
||||
self.conn = wsproto.WSConnection(connection_type=ConnectionType.SERVER)
|
||||
|
||||
self.read_paused = False
|
||||
self.writable = asyncio.Event()
|
||||
self.writable.set()
|
||||
|
||||
# Buffers
|
||||
self.bytes = b""
|
||||
self.text = ""
|
||||
|
||||
# Protocol interface
|
||||
|
||||
def connection_made( # type: ignore[override]
|
||||
self, transport: asyncio.Transport
|
||||
) -> None:
|
||||
self.connections.add(self)
|
||||
self.transport = transport
|
||||
self.server = get_local_addr(transport)
|
||||
self.client = get_remote_addr(transport)
|
||||
self.scheme = "wss" if is_ssl(transport) else "ws"
|
||||
|
||||
if self.logger.level <= TRACE_LOG_LEVEL:
|
||||
prefix = "%s:%d - " % self.client if self.client else ""
|
||||
self.logger.log(TRACE_LOG_LEVEL, "%sWebSocket connection made", prefix)
|
||||
|
||||
def connection_lost(self, exc: Exception | None) -> None:
|
||||
code = 1005 if self.handshake_complete else 1006
|
||||
self.queue.put_nowait({"type": "websocket.disconnect", "code": code})
|
||||
self.connections.remove(self)
|
||||
|
||||
if self.logger.level <= TRACE_LOG_LEVEL:
|
||||
prefix = "%s:%d - " % self.client if self.client else ""
|
||||
self.logger.log(TRACE_LOG_LEVEL, "%sWebSocket connection lost", prefix)
|
||||
|
||||
self.handshake_complete = True
|
||||
if exc is None:
|
||||
self.transport.close()
|
||||
|
||||
def eof_received(self) -> None:
|
||||
pass
|
||||
|
||||
def data_received(self, data: bytes) -> None:
|
||||
try:
|
||||
self.conn.receive_data(data)
|
||||
except RemoteProtocolError as err:
|
||||
# TODO: Remove `type: ignore` when wsproto fixes the type annotation.
|
||||
self.transport.write(self.conn.send(err.event_hint)) # type: ignore[arg-type] # noqa: E501
|
||||
self.transport.close()
|
||||
else:
|
||||
self.handle_events()
|
||||
|
||||
def handle_events(self) -> None:
|
||||
for event in self.conn.events():
|
||||
if isinstance(event, events.Request):
|
||||
self.handle_connect(event)
|
||||
elif isinstance(event, events.TextMessage):
|
||||
self.handle_text(event)
|
||||
elif isinstance(event, events.BytesMessage):
|
||||
self.handle_bytes(event)
|
||||
elif isinstance(event, events.CloseConnection):
|
||||
self.handle_close(event)
|
||||
elif isinstance(event, events.Ping):
|
||||
self.handle_ping(event)
|
||||
|
||||
def pause_writing(self) -> None:
|
||||
"""
|
||||
Called by the transport when the write buffer exceeds the high water mark.
|
||||
"""
|
||||
self.writable.clear()
|
||||
|
||||
def resume_writing(self) -> None:
|
||||
"""
|
||||
Called by the transport when the write buffer drops below the low water mark.
|
||||
"""
|
||||
self.writable.set()
|
||||
|
||||
def shutdown(self) -> None:
|
||||
if self.handshake_complete:
|
||||
self.queue.put_nowait({"type": "websocket.disconnect", "code": 1012})
|
||||
output = self.conn.send(wsproto.events.CloseConnection(code=1012))
|
||||
self.transport.write(output)
|
||||
else:
|
||||
self.send_500_response()
|
||||
self.transport.close()
|
||||
|
||||
def on_task_complete(self, task: asyncio.Task) -> None:
|
||||
self.tasks.discard(task)
|
||||
|
||||
# Event handlers
|
||||
|
||||
def handle_connect(self, event: events.Request) -> None:
|
||||
headers = [(b"host", event.host.encode())]
|
||||
headers += [(key.lower(), value) for key, value in event.extra_headers]
|
||||
raw_path, _, query_string = event.target.partition("?")
|
||||
path = unquote(raw_path)
|
||||
full_path = self.root_path + path
|
||||
full_raw_path = self.root_path.encode("ascii") + raw_path.encode("ascii")
|
||||
self.scope: "WebSocketScope" = {
|
||||
"type": "websocket",
|
||||
"asgi": {"version": self.config.asgi_version, "spec_version": "2.4"},
|
||||
"http_version": "1.1",
|
||||
"scheme": self.scheme,
|
||||
"server": self.server,
|
||||
"client": self.client,
|
||||
"root_path": self.root_path,
|
||||
"path": full_path,
|
||||
"raw_path": full_raw_path,
|
||||
"query_string": query_string.encode("ascii"),
|
||||
"headers": headers,
|
||||
"subprotocols": event.subprotocols,
|
||||
"state": self.app_state.copy(),
|
||||
"extensions": {"websocket.http.response": {}},
|
||||
}
|
||||
self.queue.put_nowait({"type": "websocket.connect"})
|
||||
task = self.loop.create_task(self.run_asgi())
|
||||
task.add_done_callback(self.on_task_complete)
|
||||
self.tasks.add(task)
|
||||
|
||||
def handle_text(self, event: events.TextMessage) -> None:
|
||||
self.text += event.data
|
||||
if event.message_finished:
|
||||
self.queue.put_nowait({"type": "websocket.receive", "text": self.text})
|
||||
self.text = ""
|
||||
if not self.read_paused:
|
||||
self.read_paused = True
|
||||
self.transport.pause_reading()
|
||||
|
||||
def handle_bytes(self, event: events.BytesMessage) -> None:
|
||||
self.bytes += event.data
|
||||
# todo: we may want to guard the size of self.bytes and self.text
|
||||
if event.message_finished:
|
||||
self.queue.put_nowait({"type": "websocket.receive", "bytes": self.bytes})
|
||||
self.bytes = b""
|
||||
if not self.read_paused:
|
||||
self.read_paused = True
|
||||
self.transport.pause_reading()
|
||||
|
||||
def handle_close(self, event: events.CloseConnection) -> None:
|
||||
if self.conn.state == ConnectionState.REMOTE_CLOSING:
|
||||
self.transport.write(self.conn.send(event.response()))
|
||||
self.queue.put_nowait({"type": "websocket.disconnect", "code": event.code})
|
||||
self.transport.close()
|
||||
|
||||
def handle_ping(self, event: events.Ping) -> None:
|
||||
self.transport.write(self.conn.send(event.response()))
|
||||
|
||||
def send_500_response(self) -> None:
|
||||
if self.response_started or self.handshake_complete:
|
||||
return # we cannot send responses anymore
|
||||
headers = [
|
||||
(b"content-type", b"text/plain; charset=utf-8"),
|
||||
(b"connection", b"close"),
|
||||
]
|
||||
output = self.conn.send(
|
||||
wsproto.events.RejectConnection(
|
||||
status_code=500, headers=headers, has_body=True
|
||||
)
|
||||
)
|
||||
output += self.conn.send(
|
||||
wsproto.events.RejectData(data=b"Internal Server Error")
|
||||
)
|
||||
self.transport.write(output)
|
||||
|
||||
async def run_asgi(self) -> None:
|
||||
try:
|
||||
result = await self.app(self.scope, self.receive, self.send)
|
||||
except ClientDisconnected:
|
||||
self.transport.close()
|
||||
except BaseException:
|
||||
self.logger.exception("Exception in ASGI application\n")
|
||||
self.send_500_response()
|
||||
self.transport.close()
|
||||
else:
|
||||
if not self.handshake_complete:
|
||||
msg = "ASGI callable returned without completing handshake."
|
||||
self.logger.error(msg)
|
||||
self.send_500_response()
|
||||
self.transport.close()
|
||||
elif result is not None:
|
||||
msg = "ASGI callable should return None, but returned '%s'."
|
||||
self.logger.error(msg, result)
|
||||
self.transport.close()
|
||||
|
||||
async def send(self, message: ASGISendEvent) -> None:
|
||||
await self.writable.wait()
|
||||
|
||||
message_type = message["type"]
|
||||
|
||||
if not self.handshake_complete:
|
||||
if message_type == "websocket.accept":
|
||||
message = typing.cast(WebSocketAcceptEvent, message)
|
||||
self.logger.info(
|
||||
'%s - "WebSocket %s" [accepted]',
|
||||
self.scope["client"],
|
||||
get_path_with_query_string(self.scope),
|
||||
)
|
||||
subprotocol = message.get("subprotocol")
|
||||
extra_headers = self.default_headers + list(message.get("headers", []))
|
||||
extensions: typing.List[Extension] = []
|
||||
if self.config.ws_per_message_deflate:
|
||||
extensions.append(PerMessageDeflate())
|
||||
if not self.transport.is_closing():
|
||||
self.handshake_complete = True
|
||||
output = self.conn.send(
|
||||
wsproto.events.AcceptConnection(
|
||||
subprotocol=subprotocol,
|
||||
extensions=extensions,
|
||||
extra_headers=extra_headers,
|
||||
)
|
||||
)
|
||||
self.transport.write(output)
|
||||
|
||||
elif message_type == "websocket.close":
|
||||
self.queue.put_nowait({"type": "websocket.disconnect", "code": 1006})
|
||||
self.logger.info(
|
||||
'%s - "WebSocket %s" 403',
|
||||
self.scope["client"],
|
||||
get_path_with_query_string(self.scope),
|
||||
)
|
||||
self.handshake_complete = True
|
||||
self.close_sent = True
|
||||
event = events.RejectConnection(status_code=403, headers=[])
|
||||
output = self.conn.send(event)
|
||||
self.transport.write(output)
|
||||
self.transport.close()
|
||||
|
||||
elif message_type == "websocket.http.response.start":
|
||||
message = typing.cast(WebSocketResponseStartEvent, message)
|
||||
# ensure status code is in the valid range
|
||||
if not (100 <= message["status"] < 600):
|
||||
msg = "Invalid HTTP status code '%d' in response."
|
||||
raise RuntimeError(msg % message["status"])
|
||||
self.logger.info(
|
||||
'%s - "WebSocket %s" %d',
|
||||
self.scope["client"],
|
||||
get_path_with_query_string(self.scope),
|
||||
message["status"],
|
||||
)
|
||||
self.handshake_complete = True
|
||||
event = events.RejectConnection(
|
||||
status_code=message["status"],
|
||||
headers=list(message["headers"]),
|
||||
has_body=True,
|
||||
)
|
||||
output = self.conn.send(event)
|
||||
self.transport.write(output)
|
||||
self.response_started = True
|
||||
|
||||
else:
|
||||
msg = (
|
||||
"Expected ASGI message 'websocket.accept', 'websocket.close' "
|
||||
"or 'websocket.http.response.start' "
|
||||
"but got '%s'."
|
||||
)
|
||||
raise RuntimeError(msg % message_type)
|
||||
|
||||
elif not self.close_sent and not self.response_started:
|
||||
try:
|
||||
if message_type == "websocket.send":
|
||||
message = typing.cast(WebSocketSendEvent, message)
|
||||
bytes_data = message.get("bytes")
|
||||
text_data = message.get("text")
|
||||
data = text_data if bytes_data is None else bytes_data
|
||||
output = self.conn.send(wsproto.events.Message(data=data)) # type: ignore
|
||||
if not self.transport.is_closing():
|
||||
self.transport.write(output)
|
||||
|
||||
elif message_type == "websocket.close":
|
||||
message = typing.cast(WebSocketCloseEvent, message)
|
||||
self.close_sent = True
|
||||
code = message.get("code", 1000)
|
||||
reason = message.get("reason", "") or ""
|
||||
self.queue.put_nowait(
|
||||
{"type": "websocket.disconnect", "code": code}
|
||||
)
|
||||
output = self.conn.send(
|
||||
wsproto.events.CloseConnection(code=code, reason=reason)
|
||||
)
|
||||
if not self.transport.is_closing():
|
||||
self.transport.write(output)
|
||||
self.transport.close()
|
||||
|
||||
else:
|
||||
msg = (
|
||||
"Expected ASGI message 'websocket.send' or 'websocket.close',"
|
||||
" but got '%s'."
|
||||
)
|
||||
raise RuntimeError(msg % message_type)
|
||||
except LocalProtocolError as exc:
|
||||
raise ClientDisconnected from exc
|
||||
elif self.response_started:
|
||||
if message_type == "websocket.http.response.body":
|
||||
message = typing.cast("WebSocketResponseBodyEvent", message)
|
||||
body_finished = not message.get("more_body", False)
|
||||
reject_data = events.RejectData(
|
||||
data=message["body"], body_finished=body_finished
|
||||
)
|
||||
output = self.conn.send(reject_data)
|
||||
self.transport.write(output)
|
||||
|
||||
if body_finished:
|
||||
self.queue.put_nowait(
|
||||
{"type": "websocket.disconnect", "code": 1006}
|
||||
)
|
||||
self.close_sent = True
|
||||
self.transport.close()
|
||||
|
||||
else:
|
||||
msg = (
|
||||
"Expected ASGI message 'websocket.http.response.body' "
|
||||
"but got '%s'."
|
||||
)
|
||||
raise RuntimeError(msg % message_type)
|
||||
|
||||
else:
|
||||
msg = "Unexpected ASGI message '%s', after sending 'websocket.close'."
|
||||
raise RuntimeError(msg % message_type)
|
||||
|
||||
async def receive(self) -> WebSocketEvent:
|
||||
message = await self.queue.get()
|
||||
if self.read_paused and self.queue.empty():
|
||||
self.read_paused = False
|
||||
self.transport.resume_reading()
|
||||
return message
|
||||
Reference in New Issue
Block a user