#summary MQTT interface to Prosody's pubsub #labels Stage-Beta = Introduction = [http://mqtt.org/ MQTT] is a lightweight binary pubsub protocol suited to embedded devices. This module provides a way for MQTT clients to connect to Prosody and publish or subscribe to local pubsub nodes. = Details = MQTT has the concept of 'topics' (similar to XMPP's pubsub 'nodes'). mod_pubsub_mqtt maps pubsub nodes to MQTT topics of the form `HOST/NODE', e.g. `pubsub.example.org/mynode`. == Limitations == The current implementation is quite basic, and in particular: * Authentication is not supported * SSL/TLS is not supported * Only QoS level 0 is supported == Payloads == XMPP payloads are always XML, but MQTT does not define a payload format. Therefore mod_pubsub_mqtt will attempt to convert data of certain recognised payload types. Currently supported: * JSON (see [http://xmpp.org/extensions/xep-0335.html XEP-0335] for the format) * Plain UTF-8 text (wrapped inside ``) All other XMPP payload types are sent to the client directly as XML. Data published by MQTT clients is currently never translated, and always treated as UTF-8 text. = Configuration = There is no special configuration for this module. Simply load it on your pubsub host like so: {{{ Component "pubsub.example.org" "pubsub" modules_enabled = { "pubsub_mqtt" } }}} You may also configure which port(s) mod_pubsub_mqtt listens on using Prosody's standard config directives, such as `mqtt_ports`. Network settings *must* be specified in the global section of the config file, not under any particular pubsub component. The default port is 1883 (MQTT's standard port number). = Compatibility = || trunk || Works || || 0.9 || Works || || 0.8 || Doesn't work ||