MQTT client.isConnected() always returns true

[dreamER]

Hi,
try this one:

MQTT Library and SEMI_AUTOMATIC

hi, If you running SYSTEM_THREAD(ENABLED) you have to set 4-th parameter in your client initialization MQTT client("sample.com", 1883, callback, true); here from official example: [sys_thread_en] In this case even if your broker is not available the code will not block

and consider to use millis() instead of any long delay() like this:

@alon

delay(35000);