mosquitto/test/broker/06-bridge-fail-persist-resend-qos1.py

#!/usr/bin/env python3

# Test whether a bridge can cope with an unknown PUBACK

from mosq_test_helper import *

def write_config(filename, port1, port2):
    with open(filename, 'w') as f:
        f.write("port %d\n" % (port2))
        f.write("\n")
        f.write("connection bridge-u-test\n")
        f.write("remote_clientid bridge-u-test\n")
        f.write("address 127.0.0.1:%d\n" % (port1))
        f.write("topic bridge/# out\n")
        f.write("\n")
        f.write("cleansession true\n")
        f.write("notifications false\n")
        f.write("restart_timeout 5\n")
        f.write("try_private false\n")

(port1, port2) = mosq_test.get_port(2)
conf_file = os.path.basename(__file__).replace('.py', '.conf')
write_config(conf_file, port1, port2)

rc = 1
keepalive = 60
connect_packet = mosq_test.gen_connect("bridge-u-test", keepalive=keepalive)
connack_packet = mosq_test.gen_connack(rc=0)

mid = 180
mid_unknown = 2000

publish_packet = mosq_test.gen_publish("bridge/unknown/qos1", qos=1, payload="bridge-message", mid=mid)
puback_packet = mosq_test.gen_puback(mid)
puback_packet_unknown = mosq_test.gen_puback(mid_unknown)


unsubscribe_packet = mosq_test.gen_unsubscribe(1, "bridge/#")
unsuback_packet = mosq_test.gen_unsuback(1)


if os.environ.get('MOSQ_USE_VALGRIND') is not None:
    sleep_time = 5
else:
    sleep_time = 0.5


sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.settimeout(10)
sock.bind(('', port1))
sock.listen(5)

broker = mosq_test.start_broker(filename=os.path.basename(__file__), port=port2, use_conf=True)
time.sleep(sleep_time)

try:
    (conn, address) = sock.accept()
    conn.settimeout(20)

    if mosq_test.expect_packet(conn, "connect", connect_packet):
        conn.send(connack_packet)

        if mosq_test.expect_packet(conn, "unsubscribe", unsubscribe_packet):
            conn.send(unsuback_packet)

            # Send the unexpected puback packet
            conn.send(puback_packet_unknown)

            # Send a legitimate publish packet to verify everything is still ok
            conn.send(publish_packet)

            if mosq_test.expect_packet(conn, "puback", puback_packet):
                rc = 0

finally:
    os.remove(conf_file)
    broker.terminate()
    broker.wait()
    (stdo, stde) = broker.communicate()
    if rc:
        print(stde)
    sock.close()

exit(rc)