subscribe topic does not work when the client connects to an external broker

[Jsk1962]

example:

mqx_client.connect("192.168.1.2", 1883);
mqx_client.setCallback(mqtt_mesage_received2);
mqx_client.subscribe("topic_abc/#"); // subscription is not working and mqx_client.mqx_2.connected()==false !!!

[Jsk1962]

mqx_client.subscribe("topic_abc/#"); // subscription is not working and mqx_client.connected()==false !!!

[hsaturn]

Hello, what is the broker you are using ? And is any other Mqtt client can connect to it ?

[Jsk1962]

Hi

I use RTU 950 (mqtt mosquitto).
This is strange because:
//--
mqx_client.connect("192.168.1.2", 1883);
mqx_client.setCallback(mqtt_mesage_received2);
//mqx_client.subscribe("topic_abc/#");
//---
When there is no subscribe to client works)
and when there is a call
mqx_client.subscribe("topic_abc/#");
it stops working.

Additional call
mqx_client.connect("192.168.1.2", 1883);
restores the connection but after publishing some information it disconnects.

Regards, Jurek

[Jsk1962]

I tested the sketch with ESP8266 uMQTTBroker
and everything works here.