Method _echo

Lib/test/_test_multiprocessing.py:3680–3683

(cls, conn)

    @classmethod
    def _echo(cls, conn):
        for msg in iter(conn.recv_bytes, SENTINEL):
            conn.send_bytes(msg)
        conn.close()

    @warnings_helper.ignore_fork_in_thread_deprecation_warnings()
    def test_connection(self):