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

Sun, 25 November 2018 08:23

Eclipse User

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.

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 12:03

Eclipse User

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.

Re: Is it possible for a subscriber to know a publisher's client ID? [message #1798878 is a reply to message #1798859]

Mon, 26 November 2018 18:02

Eclipse User

Thank you for your reply. Then I'll add client if in payload.

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