1#!/usr/bin/env python3
2
3# Test whether message size limits apply.
4
5from mosq_test_helper import *
6
7def write_config(filename, port):
8    with open(filename, 'w') as f:
9        f.write("listener %d\n" % (port))
10        f.write("allow_anonymous true\n")
11        f.write("message_size_limit 1\n")
12
13def do_test(proto_ver):
14    rc = 1
15    mid = 53
16    keepalive = 60
17    connect_packet = mosq_test.gen_connect("subpub-qos0-test", keepalive=keepalive, proto_ver=proto_ver)
18    connack_packet = mosq_test.gen_connack(rc=0, proto_ver=proto_ver)
19
20    subscribe_packet = mosq_test.gen_subscribe(mid, "subpub/qos0", 0, proto_ver=proto_ver)
21    suback_packet = mosq_test.gen_suback(mid, 0, proto_ver=proto_ver)
22
23    connect2_packet = mosq_test.gen_connect("subpub-qos0-helper", keepalive=keepalive, proto_ver=proto_ver)
24    connack2_packet = mosq_test.gen_connack(rc=0, proto_ver=proto_ver)
25
26    publish_packet_ok = mosq_test.gen_publish("subpub/qos0", qos=0, payload="A", proto_ver=proto_ver)
27    publish_packet_bad = mosq_test.gen_publish("subpub/qos0", qos=0, payload="AB", proto_ver=proto_ver)
28
29    port = mosq_test.get_port()
30    conf_file = os.path.basename(__file__).replace('.py', '.conf')
31    write_config(conf_file, port)
32
33    broker = mosq_test.start_broker(filename=os.path.basename(__file__), use_conf=True, port=port)
34
35    try:
36        sock = mosq_test.do_client_connect(connect_packet, connack_packet, timeout=20, port=port)
37        mosq_test.do_send_receive(sock, subscribe_packet, suback_packet, "suback")
38
39        sock2 = mosq_test.do_client_connect(connect2_packet, connack2_packet, timeout=20, port=port)
40        sock2.send(publish_packet_ok)
41        mosq_test.expect_packet(sock, "publish 1", publish_packet_ok)
42
43        # Check all is still well on the publishing client
44        mosq_test.do_ping(sock2)
45
46        sock2.send(publish_packet_bad)
47
48        # Check all is still well on the publishing client
49        mosq_test.do_ping(sock2)
50
51        # The subscribing client shouldn't have received a PUBLISH
52        mosq_test.do_ping(sock)
53        rc = 0
54
55        sock.close()
56    except SyntaxError:
57        raise
58    except TypeError:
59        raise
60    except mosq_test.TestError:
61        pass
62    finally:
63        os.remove(conf_file)
64        broker.terminate()
65        broker.wait()
66        (stdo, stde) = broker.communicate()
67        if rc:
68            print(stde.decode('utf-8'))
69            print("proto_ver=%d" % (proto_ver))
70            exit(rc)
71
72
73do_test(proto_ver=4)
74do_test(proto_ver=5)
75exit(0)
76