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 730 topics
Looping on connect-disconnect Andrea 10/2/16
HA strategy sanity check Bill Marriott 10/1/16
Client is not subcribing in Paho C shakti gupta 9/29/16
Problem in MQTT paho C shakti gupta 9/28/16
Native MQTT support for browsers? Nicholas Humfrey 9/24/16
MQTT Comparison with HTTP for Huge payalods Ankit Srivastava 9/23/16
Client not publishing to the broker. 9/22/16
mqttClient.publish() not working outside callback loop 9/21/16
Broker validation Israel Lopez 9/19/16
MQTT: What is the general practice adopted in big scale application? manish kumar 9/17/16
Device bus to aggregate data at edge. cogitoergosum 9/16/16
MQTT over GSM 9/16/16
MQTT brokers behind a load balancer Ian Su 9/15/16
Out of office Greg Conley 9/15/16
mosquitto over TLS rezvan rezaei 9/13/16
Topic authorization V Z 9/11/16
Why does consumer have to specify QoS? V Z 9/10/16
Embedded Server Paul Fremantle 9/9/16
0mqtt Nicholas Humfrey 9/9/16
persistence does not work - all topics lost upon reboot or poweroff Giovanni Castania 9/8/16
More topics »