MQTT implementation in unity3d does not support android platform

How can we handle it.
I used mqtt in unity3d and it is ok on win platform and the editor but I have problems on the android platform
Can I use jar MQTT plugin and use it inside unity3d?

What problems on the Android platform?

it is not connected on the android platform.
I used free MQTT version inside github. one was a dll and the other one had been implemented inside a unity project using net sockets

How do you determine that it is not connected? Please show some code/debug output.

thank you ok I debug it.
but we can use net.sockets on android platform pro? MQTT has used net.socket classes