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52 lines
1.2 KiB
52 lines
1.2 KiB
# lws minimal MQTT client
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The application connects to a broker at localhost 1883 (unencrypted) or
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8883 (tls)
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## build
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```
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$ cmake . && make
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```
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## usage
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Commandline option|Meaning
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---|---
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-d <loglevel>|Debug verbosity in decimal, eg, -d15
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-s| Use tls and connect to port 8883 instead of 1883
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Start mosquitto server locally
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```
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$ mosquitto
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```
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Run the example
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```
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[2020/01/31 10:40:23:7789] U: LWS minimal MQTT client unencrypted [-d<verbosity>][-s]
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[2020/01/31 10:40:23:8539] N: lws_mqtt_generate_id: User space provided a client ID 'lwsMqttClient'
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[2020/01/31 10:40:23:9893] N: _lws_mqtt_rx_parser: migrated nwsi 0x50febd0 to sid 1 0x5106820
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[2020/01/31 10:40:23:9899] U: callback_mqtt: MQTT_CLIENT_ESTABLISHED
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[2020/01/31 10:40:23:9967] U: callback_mqtt: WRITEABLE: Subscribing
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[2020/01/31 10:40:24:0068] U: callback_mqtt: MQTT_SUBSCRIBED
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```
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Send something to the test client
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```
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mosquitto_pub -h 127.0.0.1 -p 1883 -t test/topic0 -m "hello"
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```
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Observe it received at the test client
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```
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[2020/01/31 10:40:27:1845] U: callback_mqtt: MQTT_CLIENT_RX
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[2020/01/31 10:40:27:1870] N:
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[2020/01/31 10:40:27:1945] N: 0000: 74 65 73 74 2F 74 6F 70 69 63 30 test/topic0
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[2020/01/31 10:40:27:1952] N:
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```
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