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Testing MQTT for dot net sample from two windows computer [message #1840517]

Sat, 17 April 2021 05:16

Eclipse User

I was testing a windows sample for MQTT found at hemelix automation/structured-text-mqtt/

The sample works fine on the same machine but if I try to run the same application from a different computer it does not work. The sample is using mosquitto as a broker.
Are there any settings that I should use so the client running on a different computer can receive the data?

Re: Testing MQTT for dot net sample from two windows computer [message #1840536 is a reply to message #1840517]

Sun, 18 April 2021 04:50

Eclipse User

It might be this. Two applications connecting to the same broker must have different MQTT client ids. If they are the same, one will be kicked off when the other connects.

Re: Testing MQTT for dot net sample from two windows computer [message #1840537 is a reply to message #1840536]

Sun, 18 April 2021 05:17

Eclipse User

Hi,
Thank you for the response, it looks client id is different for each client
as it is generated by the GUID.
// use a unique id as client id, each time we start the application
clientId = Guid.NewGuid().ToString();
client.Connect(clientId);

Any further thoughts or options?
Since the last post was my first post, I could not show the source link, now I hope I can show it and that is https://www.hemelix.com/automation/structured-text-mqtt/

Re: Testing MQTT for dot net sample from two windows computer [message #1840538 is a reply to message #1840537]

Sun, 18 April 2021 05:17

Eclipse User

It works, there was some minor problem in the subscription part of the application.

[Updated on: Mon, 19 April 2021 08:21] by Moderator

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