#!/usr/bin/env python3
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# Does a bridge resend a QoS=1 message correctly after a disconnect?
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from mosq_test_helper import *
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def write_config(filename, port1, port2):
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with open(filename, 'w') as f:
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f.write("port %d\n" % (port2))
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f.write("\n")
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f.write("connection bridge_sample\n")
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f.write("address 127.0.0.1:%d\n" % (port1))
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f.write("topic bridge/# both 1\n")
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f.write("notifications false\n")
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f.write("restart_timeout 5\n")
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(port1, port2) = mosq_test.get_port(2)
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conf_file = os.path.basename(__file__).replace('.py', '.conf')
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write_config(conf_file, port1, port2)
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rc = 1
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keepalive = 60
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client_id = socket.gethostname()+".bridge_sample"
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connect_packet = mosq_test.gen_connect(client_id, keepalive=keepalive, clean_session=False, proto_ver=128+4)
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connack_packet = mosq_test.gen_connack(rc=0)
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mid = 1
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subscribe_packet = mosq_test.gen_subscribe(mid, "bridge/#", 1)
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suback_packet = mosq_test.gen_suback(mid, 1)
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mid = 2
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subscribe2_packet = mosq_test.gen_subscribe(mid, "bridge/#", 1)
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suback2_packet = mosq_test.gen_suback(mid, 1)
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mid = 3
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publish_packet = mosq_test.gen_publish("bridge/disconnect/test", qos=1, mid=mid, payload="disconnect-message")
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publish_dup_packet = mosq_test.gen_publish("bridge/disconnect/test", qos=1, mid=mid, payload="disconnect-message", dup=True)
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puback_packet = mosq_test.gen_puback(mid)
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mid = 20
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publish2_packet = mosq_test.gen_publish("bridge/disconnect/test", qos=1, mid=mid, payload="disconnect-message")
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puback2_packet = mosq_test.gen_puback(mid)
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ssock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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ssock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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ssock.settimeout(40)
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ssock.bind(('', port1))
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ssock.listen(5)
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broker = mosq_test.start_broker(filename=os.path.basename(__file__), port=port2, use_conf=True)
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try:
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(bridge, address) = ssock.accept()
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bridge.settimeout(20)
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if mosq_test.expect_packet(bridge, "connect", connect_packet):
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bridge.send(connack_packet)
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if mosq_test.expect_packet(bridge, "subscribe", subscribe_packet):
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bridge.send(suback_packet)
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bridge.send(publish_packet)
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# Bridge doesn't have time to respond but should expect us to retry
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# and so remove PUBACK.
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bridge.close()
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(bridge, address) = ssock.accept()
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bridge.settimeout(20)
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if mosq_test.expect_packet(bridge, "connect", connect_packet):
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bridge.send(connack_packet)
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if mosq_test.expect_packet(bridge, "2nd subscribe", subscribe2_packet):
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bridge.send(suback2_packet)
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# Send a different publish message to make sure the response isn't to the old one.
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bridge.send(publish2_packet)
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if mosq_test.expect_packet(bridge, "puback", puback2_packet):
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rc = 0
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bridge.close()
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finally:
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os.remove(conf_file)
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try:
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bridge.close()
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except NameError:
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pass
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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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ssock.close()
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exit(rc)
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