mosquitto/test/broker/07-will-null-topic.py

#!/usr/bin/env python3

import struct

from mosq_test_helper import *

def do_test(proto_ver):
    rc = 1
    keepalive = 60
    connect_packet = mosq_test.gen_connect("will-null-topic", keepalive=keepalive, will_topic="", will_payload=struct.pack("!4sB7s", b"will", 0, b"message"), proto_ver=proto_ver)
    connack_packet = mosq_test.gen_connack(rc=2, proto_ver=proto_ver)

    port = mosq_test.get_port()
    broker = mosq_test.start_broker(filename=os.path.basename(__file__), port=port)

    try:
        sock = mosq_test.do_client_connect(connect_packet, b"", timeout=30, port=port)
        rc = 0
        sock.close()
    except socket.error as e:
        if e.errno == errno.ECONNRESET:
            # Connection has been closed by peer, this is the expected behaviour
            rc = 0
    except mosq_test.TestError:
        pass
    finally:
        broker.terminate()
        broker.wait()
        (stdo, stde) = broker.communicate()
        if rc:
            print(stde.decode('utf-8'))
            print("proto_ver=%d" % (proto_ver))
            exit(rc)


do_test(proto_ver=4)
do_test(proto_ver=5)
exit(0)