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Hi there,
I've noticed that Mosquitto doesn't publish Last Will & Testament when I set LWT Delay Interval.
Wireshark ensures setting the LWT within CONNECT packet, and here's a hexdump:
0x00000000 0: 10 8F 01 00 04 4D 51 54 54 05 36 00 12 39 11 00 .....MQTT.6..9.. 0x00000010 16: 00 0E 10 21 00 19 27 00 00 14 50 22 00 32 17 01 ...!..'...P".2.. 0x00000020 32: 19 01 26 00 0A 55 73 65 72 2D 41 67 65 6E 74 00 ..&..User-Agent. 0x00000030 48: 16 48 34 41 73 79 6E 63 4D 51 54 54 20 76 31 2E .H4AsyncMQTT v1. 0x00000040 64: 30 2E 30 2D 72 63 36 00 18 53 53 54 2D 53 6D 61 0.0-rc6..SST-Sma 0x00000050 80: 72 74 53 6F 63 6B 65 74 33 41 2D 30 30 30 30 32 rtSocket3A-00002 0x00000060 96: 30 07 01 01 18 00 00 00 19 00 1E 53 53 54 2D 53 0..........SST-S 0x00000070 112: 6D 61 72 74 53 6F 63 6B 65 74 33 41 2D 30 30 30 martSocket3A-000 0x00000080 128: 30 32 30 2F 73 74 61 74 65 00 07 6F 66 66 6C 69 020/state..offli 0x00000090 144: 6E 65 ne
Image from Wireshark to dump the CONNECT Packet:
* There's a LWT Delay interval of 25 seconds * Retain is enabled for the LW, QoS2. * keepalive: 18 seconds
Mosquitto configuration file:
per_listener_settings true listener 1883 allow_anonymous true listener 8883 0.0.0.0 allow_anonymous true # Path to the PEM encoded server certificate. certfile C:\Program Files\mosquitto-2-0-15\certs\mqtt.crt # Path to the PEM encoded keyfile. keyfile C:\Program Files\mosquitto-2-0-15\certs\mqtt.key
The client sends "online" to "SST-SmartSocketA3-000020/state" (Retain, QoS2) topic when connected. Never received the "offline" LWT.
Eliminated the LW Delay Interval, and the LWT is published immediately.
1696107762: Client SST-SmartSocket3A-000020 has exceeded timeout, disconnecting. 1696107762: Sending PUBLISH to mqtt-explorer-4a8cd6fd (d0, q0, r0, m0, 'SST-SmartSocket3A-000020/state', ... (7 bytes)) 1696107762: Sending PUBLISH to mqttx_4e47ea97 (d0, q2, r0, m7, 'SST-SmartSocket3A-000020/state', ... (7 bytes))
The text was updated successfully, but these errors were encountered:
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Hi there,
I've noticed that Mosquitto doesn't publish Last Will & Testament when I set LWT Delay Interval.
Wireshark ensures setting the LWT within CONNECT packet, and here's a hexdump:
Image from Wireshark to dump the CONNECT Packet:
* There's a LWT Delay interval of 25 seconds
* Retain is enabled for the LW, QoS2.
* keepalive: 18 seconds
Mosquitto configuration file:
The client sends "online" to "SST-SmartSocketA3-000020/state" (Retain, QoS2) topic when connected.
Never received the "offline" LWT.
Eliminated the LW Delay Interval, and the LWT is published immediately.
The text was updated successfully, but these errors were encountered: