ESP8266 Community Forum

Posted: **Tue Aug 04, 2015 6:45 am**

The MQTT client cannot connect to AMQ running with MQTT enabled. AMQ responds with

Code: Select allTransport Connection to: tcp://10.0.2.2:40948 failed: java.net.ProtocolException: Invalid CONNECT encoding

It appears that the MQTT client within nodemcu is not setting protocol correctly

Posted: **Wed Aug 05, 2015 3:56 pm**

Hello,

I had the same problem with mosquitto from Arduino IDE.
The problem was I needed a broker fully 3.1.1 compliant. You can see here a solution. For me, updating mosquitto from the last available version in the website was successful.

churchill

ESP8266 Community Forum

MQTT Protocol Name error

MQTT Protocol Name error

Re: MQTT Protocol Name error