Solace PubSub+ event brokers support the OASIS MQTT v3.1.1 and v5.0 standards to meet the needs of connected devices and mobile applications that need an efficient way to send and receive information that requires very little bandwidth, client-side processing power and/or bandwidth. The Solace PubSub+ event broker works with any third-party MQTT v3.1.1 or v5.0 compliant client API, including open source APIs available through an Eclipse initiative called Paho.


Solace PubSub+ event brokers support the following transports for the MQTT service:

  • Plain-Text
  • TLS
  • WebSocket
  • WebSocket Secure

MQTT Conformance

For the annotated versions of the MQTT functional specifications, see:

Get Started with MQTT Messaging Tutorials

These tutorials will introduce you to the fundamentals of using MQTT to develop applications using the PubSub+ event brokers. They cover common messaging requirements such as publish/subscribe, message persistence, request/reply, and more.

Start Tutorials