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[v1.x] Deprecate the WebSocket transport and the experimental tasks entry points (#2828)

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Max 2026-06-11 09:20:19 +01:00 • committed by GitHub
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10
src/mcp/server/websocket.py
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@ -6,6 +6,7 @@ from anyio.streams.memory import MemoryObjectReceiveStream, MemoryObjectSendStre
from pydantic_core import ValidationError
from starlette.types import Receive, Scope, Send
from starlette.websockets import WebSocket
from typing_extensions import deprecated
import mcp.types as types
from mcp.shared.message import SessionMessage
@ -13,11 +14,18 @@ from mcp.shared.message import SessionMessage
logger = logging.getLogger(__name__)
@asynccontextmanager # pragma: no cover
@deprecated( # pragma: no cover
"The WebSocket server transport is deprecated and will be removed in mcp 2.0. WebSocket was never part of"
" the MCP specification; use the streamable HTTP transport instead."
)
@asynccontextmanager
async def websocket_server(scope: Scope, receive: Receive, send: Send):
"""
WebSocket server transport for MCP. This is an ASGI application, suitable to be
used with a framework like Starlette and a server like Hypercorn.
Deprecated: this transport will be removed in mcp 2.0. WebSocket was never
part of the MCP specification; use the streamable HTTP transport instead.
"""
websocket = WebSocket(scope, receive, send)