#!/usr/bin/env python3
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# Test whether maximum packet size is honoured on a PUBLISH to a client
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# MQTTv5
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from mosq_test_helper import *
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rc = 1
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keepalive = 10
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props = mqtt5_props.gen_uint32_prop(mqtt5_props.PROP_MAXIMUM_PACKET_SIZE, 20)
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connect_packet = mosq_test.gen_connect("test", proto_ver=5, keepalive=keepalive, properties=props)
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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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subscribe_packet = mosq_test.gen_subscribe(mid, "test/topic", 0, proto_ver=5)
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suback_packet = mosq_test.gen_suback(mid, 0, proto_ver=5)
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publish1_packet = mosq_test.gen_publish(topic="test/topic", qos=0, payload="12345678901234567890", proto_ver=5)
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publish2_packet = mosq_test.gen_publish(topic="test/topic", qos=0, payload="67890", proto_ver=5)
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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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sock = mosq_test.do_client_connect(connect_packet, connack_packet, port=port)
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mosq_test.do_send_receive(sock, subscribe_packet, suback_packet)
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sock.send(publish1_packet)
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# We shouldn't receive the publish here because it is > MAXIMUM_PACKET_SIZE
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mosq_test.do_ping(sock, "pingresp1")
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mosq_test.do_send_receive(sock, publish2_packet, publish2_packet)
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mosq_test.do_ping(sock, "pingresp2")
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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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