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MQTT server is designed for communication in Machine to Machine (M2M) and Internet of Things (IoT) contexts and implements MQTT protocol versions 3.1 and 3.1.1. The server is written in Erlang as OTP application.
OSERL (Open SMPP Erlang Library) is an erlang implementation of the Short Message Peer to Peer protocol, covering the entire specification (version 5.0).
Forward and backward compatibilities guidelines were adopted.