Method pin

pymongo/asynchronous/client_session.py:451–456

(self, server: Server, conn: AsyncConnection)

        return None

    def pin(self, server: Server, conn: AsyncConnection) -> None:
        self.sharded = True
        self.pinned_address = server.description.address
        if server.description.server_type == SERVER_TYPE.LoadBalancer:
            conn.pin_txn()
            self.conn_mgr = _ConnectionManager(conn, False)

    async def unpin(self) -> None:
        self.pinned_address = None