1# lws minimal MQTT client 2 3The application connects to a broker at localhost 1883 (unencrypted) or 48883 (tls) 5 6## build 7 8``` 9 $ cmake . && make 10``` 11 12## usage 13 14Commandline option|Meaning 15---|--- 16-d <loglevel>|Debug verbosity in decimal, eg, -d15 17-s| Use tls and connect to port 8883 instead of 1883 18 19Start mosquitto server locally 20 21``` 22$ mosquitto 23``` 24 25Run the example 26 27``` 28[2020/01/31 10:40:23:7789] U: LWS minimal MQTT client unencrypted [-d<verbosity>][-s] 29[2020/01/31 10:40:23:8539] N: lws_mqtt_generate_id: User space provided a client ID 'lwsMqttClient' 30[2020/01/31 10:40:23:9893] N: _lws_mqtt_rx_parser: migrated nwsi 0x50febd0 to sid 1 0x5106820 31[2020/01/31 10:40:23:9899] U: callback_mqtt: MQTT_CLIENT_ESTABLISHED 32[2020/01/31 10:40:23:9967] U: callback_mqtt: WRITEABLE: Subscribing 33[2020/01/31 10:40:24:0068] U: callback_mqtt: MQTT_SUBSCRIBED 34``` 35 36Send something to the test client 37 38 39``` 40mosquitto_pub -h 127.0.0.1 -p 1883 -t test/topic0 -m "hello" 41``` 42 43Observe it received at the test client 44 45``` 46[2020/01/31 10:40:27:1845] U: callback_mqtt: MQTT_CLIENT_RX 47[2020/01/31 10:40:27:1870] N: 48[2020/01/31 10:40:27:1945] N: 0000: 74 65 73 74 2F 74 6F 70 69 63 30 test/topic0 49[2020/01/31 10:40:27:1952] N: 50 51``` 52