Function handle

src/mcp/server/runner.py:509–518

(
        dctx: DispatchContext[TransportContext], method: str, params: Mapping[str, Any] | None
    )

    """

    async def handle(
        dctx: DispatchContext[TransportContext], method: str, params: Mapping[str, Any] | None
    ) -> dict[str, Any]:
        meta = (params or {}).get("_meta", {})
        connection = Connection.from_envelope(
            meta.get(PROTOCOL_VERSION_META_KEY, LATEST_MODERN_VERSION),
            meta.get(CLIENT_INFO_META_KEY),
            meta.get(CLIENT_CAPABILITIES_META_KEY),
        )
        return await serve_one(server, dctx, method, params, connection=connection, lifespan_state=lifespan_state)

    return handle