Welcome to the MQTT mailing list and discussion group.

MQTT is a lightweight publish/subscribe messaging protocol originally developed for sensor applications. MQTT is extremely useful and widely adopted in mobile environments due to the low power consumption, simplicity of API, and small bandwidth used. Clients and servers are available in various languages including C, Python, Erlang, C#, Java etc - see for more information about the protocol and the community around it.

This group is intended to bring together discussions of the protocol and different implementations. Other discussion media exist (for example, individual software implementations may have their own project resources) but this group is for discussion of the protocol and MQTT ecosystem as a whole. Off-topic debates, discussion around alternative protocols, etc. do not belong in this group. Thanks.

Initial posts will need to be moderated by a group administrator before they appear to the community.

Showing 1-23 of 333 topics
MQTT-S rename to MQTT-SN Ian Craggs 12/2/13
OASIS MQTT Technical Committee kicked off Richard J Coppen 9/16/13
A Tardy, but Hardy Welcome 1/6/12
MQTT licence Владимир Негодов 8:50 AM
Enabling RPC over MQTT, Metadata services, etc... Rick Bullotta 6:12 AM
Deleting retained messages under a topic recursively 3:22 AM
Invalid UTF-8 in topic names Nicholas Humfrey 4/15/14
0mqtt Nicholas Humfrey 4/15/14
Compiling sample program using Paho MQTT c client on raspberry pi rajath ramesh 4/7/14
What's the granted QoS for SUBACK if subscribing to a topic that is NOT permitted (MQTT v3.1 spec) ? 张斌 4/4/14
Android's MqttClients & their MqttServer which Disconnect all the time Guillaume Deloffre 4/2/14
What does MQTT-SN require of the underlying transport? Thorsten von Eicken 4/1/14
Wireshark Dissector for MQTT Dave C-J 4/1/14
MQTT Websockets and Browsers Adam Helbling 3/27/14
topic structure Toby Dickenson 3/26/14
failure to process large messages using IBM's Javascript client Sam Matthews 3/20/14
Disconnection with inflight queue not empty Paolo Patierno 3/19/14
send and receive data in the same session (sleeping client) AlemV 3/13/14
Retrieving published messages on subscribe after disconnect Sam Matthews 3/12/14
Mqtt with visual c++ Fabio Roncato 3/12/14
mosquitto connect bhashkar prakash singh 3/12/14
Change will Simon 3/10/14
Mosquitto / MQTT Guy Dillen 3/7/14
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