#!/usr/bin/env python3
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# Test whether a bridge can cope with an unknown PUBACK
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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-u-test\n")
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f.write("remote_clientid bridge-u-test\n")
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f.write("address 127.0.0.1:%d\n" % (port1))
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f.write("topic bridge/# out\n")
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f.write("\n")
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f.write("cleansession true\n")
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f.write("notifications false\n")
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f.write("restart_timeout 5\n")
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f.write("try_private false\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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connect_packet = mosq_test.gen_connect("bridge-u-test", keepalive=keepalive)
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connack_packet = mosq_test.gen_connack(rc=0)
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mid = 180
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mid_unknown = 2000
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publish_packet = mosq_test.gen_publish("bridge/unknown/qos2", qos=1, payload="bridge-message", mid=mid)
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puback_packet = mosq_test.gen_puback(mid)
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pubrec_packet_unknown1 = mosq_test.gen_pubrec(mid_unknown+1)
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pubrel_packet_unknown1 = mosq_test.gen_pubrel(mid_unknown+1)
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pubrel_packet_unknown2 = mosq_test.gen_pubrel(mid_unknown+2)
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pubcomp_packet_unknown2 = mosq_test.gen_pubcomp(mid_unknown+2)
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pubcomp_packet_unknown3 = mosq_test.gen_pubcomp(mid_unknown+3)
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unsubscribe_packet = mosq_test.gen_unsubscribe(1, "bridge/#")
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unsuback_packet = mosq_test.gen_unsuback(1)
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if os.environ.get('MOSQ_USE_VALGRIND') is not None:
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sleep_time = 5
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else:
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sleep_time = 0.5
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sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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sock.settimeout(10)
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sock.bind(('', port1))
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sock.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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time.sleep(sleep_time)
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try:
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(conn, address) = sock.accept()
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conn.settimeout(20)
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if mosq_test.expect_packet(conn, "connect", connect_packet):
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conn.send(connack_packet)
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if mosq_test.expect_packet(conn, "unsubscribe", unsubscribe_packet):
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conn.send(unsuback_packet)
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# Send the unexpected pubrec packet
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conn.send(pubrec_packet_unknown1)
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if mosq_test.expect_packet(conn, "pubrel", pubrel_packet_unknown1):
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conn.send(pubrel_packet_unknown2)
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if mosq_test.expect_packet(conn, "pubcomp", pubcomp_packet_unknown2):
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conn.send(pubcomp_packet_unknown3)
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# Send a legitimate publish packet to verify everything is still ok
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conn.send(publish_packet)
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if mosq_test.expect_packet(conn, "puback", puback_packet):
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rc = 0
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finally:
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os.remove(conf_file)
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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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sock.close()
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exit(rc)
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