#!/usr/bin/env python3

# Test whether sending a non zero session expiry interval in DISCONNECT after
# having sent a zero session expiry interval is treated correctly in MQTT v5.

from mosq_test_helper import *

rc = 1

keepalive = 10


connect_packet = mosq_test.gen_connect(None, proto_ver=5, keepalive=keepalive)

props = mqtt5_props.gen_string_prop(mqtt5_props.PROP_ASSIGNED_CLIENT_IDENTIFIER, "auto-00000000-0000-0000-0000-000000000000")
connack_packet = mosq_test.gen_connack(rc=0, proto_ver=5, properties=props)

props = mqtt5_props.gen_uint32_prop(mqtt5_props.PROP_SESSION_EXPIRY_INTERVAL, 1)
disconnect_client_packet = mosq_test.gen_disconnect(proto_ver=5, properties=props)

disconnect_server_packet = mosq_test.gen_disconnect(proto_ver=5, reason_code=130)

port = mosq_test.get_port()
broker = mosq_test.start_broker(filename=os.path.basename(__file__), port=port)

try:
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    sock.settimeout(10)
    sock.connect(("localhost", port))

    sock.send(connect_packet)
    connack_recvd = sock.recv(len(connack_packet))

    if connack_recvd[0:12] == connack_packet[0:12]:
        # FIXME - this test could be tightened up a lot
        rc = 0
    
    sock.close()
finally:
    broker.terminate()
    broker.wait()
    (stdo, stde) = broker.communicate()
    if rc:
        print(stde.decode('utf-8'))

exit(rc)

