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 21-40 of 676 topics
HTTP Proxies and MQTT Dominik Obermaier 6/15/16
Mosquitto on UDP Hagar Sudha 6/14/16
Trying to simulate a large mob of clients using multi-threading. debjeet sarkar 6/10/16
MQTT failover between multiple connections Rich X 6/4/16
Remaining Length encoding John Wilson 5/31/16
MQTT Packets retransmission and PUBACK Shafreeck Sea 5/31/16
Denied publish error Edwin Vinas 5/30/16
acknowledgement - qos = 1 between python and node-red Chris Jefferies 5/30/16
How dose MQTT process the duplicated message when retransmitted. Shafreeck Sea 5/29/16
Problem with cast jmajyo 5/29/16
Mosquitto broker sending message to Azure IoT Hub Mario Barbato 5/19/16
project MQTT PHP Luc Soriano 5/14/16
LWT kaushalender shekhawat 5/11/16
MQTT Dashboard recommendations banjaxed 5/6/16
Two concurrent paho C client programs on the same RPi connecting to local Mosquitto Broker... Pihlung Pang 5/4/16
MQTT-S(N) brokers Filipe Nicoli 5/3/16
regarding websockets in Mosquitto Suman Patro 5/1/16
TLS/SSL certificates generation for broker and client and what config required in mosquitto.conf Shrikant Lahase 4/27/16
setting up a basic mqtt broker on aws ec2 andrew stillie 4/23/16
Test equipment kaushalender shekhawat 4/13/16
More topics »