Method from_envelope

src/mcp/server/connection.py:156–181

A born-ready connection populated from a request's `_meta` envelope. `initialized` is set and the envelope's client info/capabilities (when both supplied) are recorded as `client_params` so capability checks work. `outbound` defaults to the no-channel sentinel for the

(
        cls,
        protocol_version: str,
        client_info: Implementation | None,
        client_capabilities: ClientCapabilities | None,
        *,
        outbound: Outbound = _NO_CHANNEL,
    )

    @classmethod
    def from_envelope(
        cls,
        protocol_version: str,
        client_info: Implementation | None,
        client_capabilities: ClientCapabilities | None,
        *,
        outbound: Outbound = _NO_CHANNEL,
    ) -> Connection:
        """A born-ready connection populated from a request's `_meta` envelope.

        `initialized` is set and the envelope's client info/capabilities (when
        both supplied) are recorded as `client_params` so capability checks
        work. `outbound` defaults to the no-channel sentinel for the
        single-exchange HTTP path; duplex modern transports (e.g. stdio) pass
        the dispatcher so server-initiated messages have a back-channel.
        """
        client_params = None
        if client_info is not None and client_capabilities is not None:
            client_params = InitializeRequestParams(
                protocol_version=protocol_version,
                capabilities=client_capabilities,
                client_info=client_info,
            )
        connection = cls(outbound, protocol_version=protocol_version, client_params=client_params)
        connection.initialized.set()
        return connection

    @classmethod
    def for_loop(