#!/usr/bin/env python3
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# Test whether the broker reduces the message expiry interval when republishing
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# a retained message, and eventually removes it.
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# MQTT v5
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# Helper publishes a message, with a medium length expiry with retained set. It
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# publishes a second message with retained set but no expiry.
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# Client connects, subscribes, gets messages, disconnects.
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# We wait until the expiry will have expired.
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# Client connects, subscribes, doesn't get expired message, does get
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# non-expired message.
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from mosq_test_helper import *
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rc = 1
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keepalive = 60
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connect_packet = mosq_test.gen_connect("subpub", keepalive=keepalive, proto_ver=5)
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connack_packet = mosq_test.gen_connack(rc=0, proto_ver=5)
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mid = 1
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subscribe1_packet = mosq_test.gen_subscribe(mid, "subpub/expired", 1, proto_ver=5)
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suback1_packet = mosq_test.gen_suback(mid, 1, proto_ver=5)
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mid = 2
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subscribe2_packet = mosq_test.gen_subscribe(mid, "subpub/kept", 1, proto_ver=5)
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suback2_packet = mosq_test.gen_suback(mid, 1, proto_ver=5)
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helper_connect = mosq_test.gen_connect("helper", proto_ver=5)
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helper_connack = mosq_test.gen_connack(rc=0, proto_ver=5)
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mid=1
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props = mqtt5_props.gen_uint32_prop(mqtt5_props.PROP_MESSAGE_EXPIRY_INTERVAL, 4)
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publish1_packet = mosq_test.gen_publish("subpub/expired", mid=mid, qos=1, retain=True, payload="message1", proto_ver=5, properties=props)
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puback1_packet = mosq_test.gen_puback(mid, proto_ver=5, reason_code=mqtt5_rc.MQTT_RC_NO_MATCHING_SUBSCRIBERS)
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mid=2
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publish2s_packet = mosq_test.gen_publish("subpub/kept", mid=mid, qos=1, retain=True, payload="message2", proto_ver=5)
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puback2s_packet = mosq_test.gen_puback(mid, proto_ver=5, reason_code=mqtt5_rc.MQTT_RC_NO_MATCHING_SUBSCRIBERS)
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mid=1
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publish2r_packet = mosq_test.gen_publish("subpub/kept", mid=mid, qos=1, retain=True, payload="message2", proto_ver=5)
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puback2r_packet = mosq_test.gen_puback(mid, proto_ver=5, reason_code=mqtt5_rc.MQTT_RC_NO_MATCHING_SUBSCRIBERS)
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port = mosq_test.get_port()
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broker = mosq_test.start_broker(filename=os.path.basename(__file__), port=port)
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try:
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helper = mosq_test.do_client_connect(helper_connect, helper_connack, timeout=20, port=port)
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mosq_test.do_send_receive(helper, publish1_packet, puback1_packet, "puback 1")
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mosq_test.do_send_receive(helper, publish2s_packet, puback2s_packet, "puback 2")
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helper.close()
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sock = mosq_test.do_client_connect(connect_packet, connack_packet, timeout=20, port=port)
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mosq_test.do_send_receive(sock, subscribe1_packet, suback1_packet, "suback 1-1")
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if mosq_test.expect_packet(sock, "publish 1", publish1_packet):
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sock.send(puback1_packet)
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mosq_test.do_send_receive(sock, subscribe2_packet, suback2_packet, "suback 2-1")
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if mosq_test.expect_packet(sock, "publish 2", publish2s_packet):
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sock.send(puback2s_packet)
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sock.close()
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time.sleep(5)
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sock = mosq_test.do_client_connect(connect_packet, connack_packet, timeout=20, port=port)
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mosq_test.do_send_receive(sock, subscribe1_packet, suback1_packet, "suback 1-2")
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# We shouldn't receive a publish here
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# This will fail if we do receive a publish
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mosq_test.do_send_receive(sock, subscribe2_packet, suback2_packet, "suback 2-2")
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if mosq_test.expect_packet(sock, "publish 2", publish2r_packet):
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sock.send(puback2r_packet)
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sock.close()
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rc = 0
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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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