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 1-20 of 986 topics
Publishing Sound(.mp/.3gp etc) File problem using MQTT Proxy Hossain 12:55 AM
Is there a way to protect the broker from too many packages originating from one client? Max G 4/20/18
publishing contents of a binary file with Paho 4/13/18
Normative behavior for a client not receiving acknowledgments MD 4/11/18
Clean session flow in mqtt kushal bhatta 4/11/18
How messageArrived() callback and MQTTYield() works in paho-mqtt-embedded-c ? Maunik Patel 4/10/18
MQTT-v5 blockwise transfer Julien Christophe 4/9/18
problem Ekrem Gülcüoğlu 4/6/18
username and password 3/26/18
Using MQTT with expensive data plans (infrequent publishing) Jimmie 3/20/18
Huge IOT Project - Is MQTT right choice? Gourav Goyal 3/17/18
How can i connect MQTT in my webpage? 3/14/18
Does MQTT maintains a queue internally for each topic Nithin B 3/13/18
MQTT with QUIC Vasudev Patel 3/7/18
Subscribing to topics Ulf Holt 3/5/18
How to check the size of the message received from the MQTT broker? user2301 3/1/18
[Paho python] How to set Key store and Trust store with Paho python ? Seung Yul Baek 2/22/18
character,Colon Problem sagar khamkar 2/19/18
Multiple paho publication issues Allen Jakpa 2/19/18
Mosquito vs wolfMQTT vs Paho C vasu 2/16/18
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