APUE Learning Example Source Code
guowenxue
2019-06-26 157be0b0d4c7d4809cfcafc76235cc18388378c8
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#!/usr/bin/env python3
 
# Test whether a client subscribed to a topic receives its own message sent to that topic.
 
from mosq_test_helper import *
 
rc = 1
mid = 530
keepalive = 60
connect_packet = mosq_test.gen_connect("subpub-qos2-test", keepalive=keepalive)
connack_packet = mosq_test.gen_connack(rc=0)
 
subscribe_packet = mosq_test.gen_subscribe(mid, "subpub/qos2", 2)
suback_packet = mosq_test.gen_suback(mid, 2)
 
mid = 301
publish_packet = mosq_test.gen_publish("subpub/qos2", qos=2, mid=mid, payload="message")
pubrec_packet = mosq_test.gen_pubrec(mid)
pubrel_packet = mosq_test.gen_pubrel(mid)
pubcomp_packet = mosq_test.gen_pubcomp(mid)
 
mid = 1
publish_packet2 = mosq_test.gen_publish("subpub/qos2", qos=2, mid=mid, payload="message")
pubrec_packet2 = mosq_test.gen_pubrec(mid)
pubrel_packet2 = mosq_test.gen_pubrel(mid)
pubcomp_packet2 = mosq_test.gen_pubcomp(mid)
 
 
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, connack_packet, timeout=20, port=port)
 
    mosq_test.do_send_receive(sock, subscribe_packet, suback_packet, "suback")
    mosq_test.do_send_receive(sock, publish_packet, pubrec_packet, "pubrec")
    mosq_test.do_send_receive(sock, pubrel_packet, pubcomp_packet, "pubcomp")
 
    if mosq_test.expect_packet(sock, "publish2", publish_packet2):
        mosq_test.do_send_receive(sock, pubrec_packet2, pubrel_packet2, "pubrel2")
        # Broker side of flow complete so can quit here.
        rc = 0
 
    sock.close()
finally:
    broker.terminate()
    broker.wait()
    (stdo, stde) = broker.communicate()
    if rc:
        print(stde.decode('utf-8'))
 
exit(rc)