Impossible to push MQTT setting : payload request limitation at 256 characters...

[jquenee]

Self-explain example

curl -X POST "http://192.168.1.39/rpc" \
    -H "Content-Type: application/json" \
    -d '{
         "sn": "......",
         "method": "HA.Mqtt.SetConfig",
         "params": {
         "config": {
            "enable": true,
            "server": "192.168.1.88",
            "port":1883,
            "protocol":"mqtt",
            "username": "....",
            "password": "...."
            }
         }
        }'

{"timestamp":1767596058,"messageId":1,"error":"Invalid content length, The maximum request length is 256","code":400}

[dav1dBoy]

Self-explain example

curl -X POST "http://192.168.1.39/rpc" \
    -H "Content-Type: application/json" \
    -d '{
         "sn": "......",
         "method": "HA.Mqtt.SetConfig",
         "params": {
         "config": {
            "enable": true,
            "server": "192.168.1.88",
            "port":1883,
            "protocol":"mqtt",
            "username": "....",
            "password": "...."
            }
         }
        }'

{"timestamp":1767596058,"messageId":1,"error":"Invalid content length, The maximum request length is 256","code":400}

The latest firmware version has been changed to 512 bytes. If it is still too long, please set it separately twice, thank you

[jquenee]

Thanks for the quick reply. Which version, we're talking about.
Latest version I got are

• Smart Meter 3CT V1.0.4 : KO => payload is limited to 256 bytes
• SolarFlow 2400AC V1.0.15 : OK

[jquenee]

Just for information. SolarFlow 2400AC V1.0.15 is responding with

{"timestamp":1767897869,"messageId":1,"success":true,"code":200,"sn":"..."}  

But it doesn't update MQTT setting... It works only through mobile app.