This is the first release of the Java, C, JavaScript and Python MQTT client libraries. They allow application programs to communicate with MQTT servers using the existing MQTT specification, 3.1. The MQTT standard currently being drafted, 3.1.1, will be supported in a later release.
Each library supports the full MQTT 3.1 specification including:
- QoS 0, 1 and 2
- payloads up to 256MB (MQTT server support needed)
- will messages.