I have tested out mosquitto an open source implementation of mqtt protocol. The protocol runs over tcp/ip protocol. In the source code, there are 3 components. 1> mosquitto server. It is responsible for receiving the messages from publisher and sending the message to subscriber.
2>mosquitto_pub: publishes the message.
3>mosquitto_sub: subscriber. It receives the message.
Currently it has been tested in unauthenticated mode.
The above components are working fine.
Ruckus client has provided a jar file and script (execute-normal.sh) in MockSCI-TLS.tar(subscriber).
The script is unable to connect and receive messages from the mosquitto broker.