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Is it possible for a subscriber to know a publisher's client ID? [message #1798796]

Sun, 25 November 2018 13:23

Yusuke Fukuhara

Messages: 2
Registered: November 2018

Junior Member

I'm using paho as client and mosquitto as broker.

I'm using paho in Python.

Is it possible for a subscriber to know a publisher's client ID?

I appreciate it if you tell me whether it is possible and how to do it.

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Re: Is it possible for a subscriber to know a publisher's client ID? [message #1798859 is a reply to message #1798796]

Mon, 26 November 2018 17:03

Ian Craggs

Messages: 76
Registered: March 2013

Member

In general for MQTT, the answer is no. The publish/subscribe paradigm intentionally isolates publishers from subscribers. If the publishing application is your own, you could add the client id to the payload.

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