def METHOD_NAME(proto_ver):
    rc = 1
    keepalive = 60
    pub_connect_packet = mosq_test.gen_connect("pub", keepalive=keepalive, clean_session=False, proto_ver=proto_ver, session_expiry=60)
    pub_connack1_packet = mosq_test.gen_connack(rc=0, proto_ver=proto_ver)
    pub_connack2_packet = mosq_test.gen_connack(rc=0, flags=1, proto_ver=proto_ver)
    sub1_connect_packet = mosq_test.gen_connect("sub1", keepalive=keepalive, proto_ver=proto_ver)
    sub1_connack_packet = mosq_test.gen_connack(rc=0, proto_ver=proto_ver)
    sub2_connect_packet = mosq_test.gen_connect("sub2", keepalive=keepalive, proto_ver=proto_ver)
    sub2_connack_packet = mosq_test.gen_connack(rc=0, proto_ver=proto_ver)
    mid = 1
    subscribe1_packet = mosq_test.gen_subscribe(mid, "topic1", 0, proto_ver=proto_ver)
    suback1_packet = mosq_test.gen_suback(mid, 0, proto_ver=proto_ver)
    mid = 1
    subscribe2_packet = mosq_test.gen_subscribe(mid, "topic2", 0, proto_ver=proto_ver)
    suback2_packet = mosq_test.gen_suback(mid, 0, proto_ver=proto_ver)
    # All publishes have the same mid
    mid = 1
    pubrec_packet = mosq_test.gen_pubrec(mid, proto_ver=proto_ver)
    pubrel_packet = mosq_test.gen_pubrel(mid, proto_ver=proto_ver)
    pubcomp_packet = mosq_test.gen_pubcomp(mid, proto_ver=proto_ver)
    publish1s_packet = mosq_test.gen_publish("topic1", qos=2, mid=mid, payload="message1", proto_ver=proto_ver)
    publish2s_packet = mosq_test.gen_publish("topic2", qos=2, mid=mid, payload="message2", proto_ver=proto_ver)
    publish3s_packet = mosq_test.gen_publish("topic1", qos=2, mid=mid, payload="message3", proto_ver=proto_ver)
    publish4s_packet = mosq_test.gen_publish("topic1", qos=2, mid=mid, payload="message4", proto_ver=proto_ver)
    publish5s_packet = mosq_test.gen_publish("topic1", qos=2, mid=mid, payload="message5", proto_ver=proto_ver)
    publish1r_packet = mosq_test.gen_publish("topic1", qos=0, payload="message1", proto_ver=proto_ver)
    publish2r_packet = mosq_test.gen_publish("topic2", qos=0, payload="message2", proto_ver=proto_ver)
    publish3r_packet = mosq_test.gen_publish("topic1", qos=0, payload="message3", proto_ver=proto_ver)
    publish4r_packet = mosq_test.gen_publish("topic1", qos=0, payload="message4", proto_ver=proto_ver)
    publish5r_packet = mosq_test.gen_publish("topic1", qos=0, payload="message5", proto_ver=proto_ver)
    port = mosq_test.get_port()
    broker = mosq_test.start_broker(filename=os.path.basename(__file__), port=port)
    try:
        sub1 = mosq_test.do_client_connect(sub1_connect_packet, sub1_connack_packet, timeout=10, port=port)
        mosq_test.do_send_receive(sub1, subscribe1_packet, suback1_packet, "suback1")
        pub = mosq_test.do_client_connect(pub_connect_packet, pub_connack1_packet, timeout=10, port=port)
        mosq_test.do_send_receive(pub, publish1s_packet, pubrec_packet, "pubrec1")
        mosq_test.do_send_receive(pub, pubrel_packet, pubcomp_packet, "pubcomp1")
        pub.close()
        mosq_test.expect_packet(sub1, "publish1", publish1r_packet)
        pub = mosq_test.do_client_connect(pub_connect_packet, pub_connack2_packet, timeout=10, port=port)
        mosq_test.do_send_receive(pub, publish2s_packet, pubrec_packet, "pubrec2")
        mosq_test.do_send_receive(pub, pubrel_packet, pubcomp_packet, "pubcomp2")
        pub.close()
        # We expect nothing on sub1
        mosq_test.do_ping(sub1, error_string="pingresp1")
        pub = mosq_test.do_client_connect(pub_connect_packet, pub_connack2_packet, timeout=10, port=port)
        mosq_test.do_send_receive(pub, publish3s_packet, pubrec_packet, "pubrec3")
        mosq_test.do_send_receive(pub, pubrel_packet, pubcomp_packet, "pubcomp3")
        pub.close()
        mosq_test.expect_packet(sub1, "publish3", publish3r_packet)
        sub2 = mosq_test.do_client_connect(sub2_connect_packet, sub2_connack_packet, timeout=10, port=port)
        mosq_test.do_send_receive(sub2, subscribe2_packet, suback2_packet, "suback2")
        pub = mosq_test.do_client_connect(pub_connect_packet, pub_connack2_packet, timeout=10, port=port)
        mosq_test.do_send_receive(pub, publish4s_packet, pubrec_packet, "pubrec4")
        mosq_test.do_send_receive(pub, pubrel_packet, pubcomp_packet, "pubcomp4")
        pub.close()
        # We expect nothing on sub2
        mosq_test.do_ping(sub2, error_string="pingresp2")
        mosq_test.expect_packet(sub1, "publish4", publish4r_packet)
        pub = mosq_test.do_client_connect(pub_connect_packet, pub_connack2_packet, timeout=10, port=port)
        mosq_test.do_send_receive(pub, publish5s_packet, pubrec_packet, "pubrec5")
        mosq_test.do_send_receive(pub, pubrel_packet, pubcomp_packet, "pubcomp5")
        pub.close()
        # We expect nothing on sub2
        mosq_test.do_ping(sub2, error_string="pingresp2")
        mosq_test.expect_packet(sub1, "publish5", publish5r_packet)
        rc = 0
        sub2.close()
        sub1.close()
    except mosq_test.TestError:
        pass
    finally:
        broker.terminate()
        broker.wait()
        (stdo, stde) = broker.communicate()
        if rc:
            print(stde.decode('utf-8'))
            print("proto_ver=%d" % (proto_ver))
            exit(rc)