mosquitto/test/broker/12-prop-maximum-packet-size-broker.py
2026-05-03 01:17:26 +01:00

50 lines
1.8 KiB
Python
Executable file

#!/usr/bin/env python3
# Check whether the broker disconnects a client nicely when they send a too large packet.
from mosq_test_helper import *
def write_config(filename, port):
with open(filename, 'w') as f:
f.write("listener %d\n" % (port))
f.write("allow_anonymous true\n")
f.write("max_packet_size 50\n")
port = mosq_test.get_port()
conf_file = os.path.basename(__file__).replace('.py', '.conf')
write_config(conf_file, port)
rc = 1
connect_packet = mosq_test.gen_connect("12-max-packet-broker", proto_ver=5)
props = mqtt5_props.gen_uint16_prop(mqtt5_props.TOPIC_ALIAS_MAXIMUM, 10)
props += mqtt5_props.gen_uint32_prop(mqtt5_props.MAXIMUM_PACKET_SIZE, 50)
props += mqtt5_props.gen_uint16_prop(mqtt5_props.RECEIVE_MAXIMUM, 20)
connack_packet = mosq_test.gen_connack(rc=0, proto_ver=5, properties=props, property_helper=False)
publish_packet_ok = mosq_test.gen_publish("12/max/packet/size/broker/test/topic", qos=0, payload="012345678", proto_ver=5)
publish_packet_bad = mosq_test.gen_publish("12/max/packet/size/broker/test/topic", qos=0, payload="0123456789", proto_ver=5)
disconnect_packet = mosq_test.gen_disconnect(reason_code=149, proto_ver=5)
broker = mosq_test.start_broker(filename=os.path.basename(__file__), port=port, use_conf=True)
try:
sock = mosq_test.do_client_connect(connect_packet, connack_packet, port=port)
sock.send(publish_packet_ok)
mosq_test.do_ping(sock)
mosq_test.do_send_receive(sock, publish_packet_bad, disconnect_packet, "disconnect")
rc = 0
except mosq_test.TestError:
pass
finally:
mosq_test.terminate_broker(broker)
if mosq_test.wait_for_subprocess(broker):
print("broker not terminated")
if rc == 0: rc=1
os.remove(conf_file)
if rc:
print(mosq_test.broker_log(broker))
exit(rc)