#!/usr/bin/env python3
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# Test whether a PUBLISH to a topic with QoS 2 results in the correct packet
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# flow. This test introduces delays into the flow in order to force the broker
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# to send duplicate PUBREC and PUBCOMP messages.
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from mosq_test_helper import *
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rc = 1
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keepalive = 600
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connect_packet = mosq_test.gen_connect("pub-qos2-timeout-test", keepalive=keepalive)
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connack_packet = mosq_test.gen_connack(rc=0)
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mid = 1926
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publish_packet = mosq_test.gen_publish("pub/qos2/test", qos=2, mid=mid, payload="timeout-message")
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pubrec_packet = mosq_test.gen_pubrec(mid)
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pubrel_packet = mosq_test.gen_pubrel(mid)
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pubcomp_packet = mosq_test.gen_pubcomp(mid)
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broker = mosq_test.start_broker(filename=os.path.basename(__file__))
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try:
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sock = mosq_test.do_client_connect(connect_packet, connack_packet)
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mosq_test.do_send_receive(sock, publish_packet, pubrec_packet, "pubrec")
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# Timeout is 8 seconds which means the broker should repeat the PUBREC.
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if mosq_test.expect_packet(sock, "pubrec", pubrec_packet):
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mosq_test.do_send_receive(sock, pubrel_packet, pubcomp_packet, "pubcomp")
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rc = 0
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sock.close()
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finally:
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broker.terminate()
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broker.wait()
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(stdo, stde) = broker.communicate()
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if rc:
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print(stde.decode('utf-8'))
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exit(rc)
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