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from __future__ import annotations
import asyncio
import typing
AutoWebSocketsProtocol: typing.Callable[..., asyncio.Protocol] | None
try:
import websockets # noqa
except ImportError: # pragma: no cover
try:
import wsproto # noqa
except ImportError:
AutoWebSocketsProtocol = None
else:
from uvicorn.protocols.websockets.wsproto_impl import WSProtocol
AutoWebSocketsProtocol = WSProtocol
else:
from uvicorn.protocols.websockets.websockets_impl import WebSocketProtocol
AutoWebSocketsProtocol = WebSocketProtocol
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