8000 fix autopaho Docker example by agebhar1 · Pull Request #300 · eclipse-paho/paho.golang · GitHub
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fix autopaho Docker example #300

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Merged
merged 1 commit into from
May 4, 2025
Merged

fix autopaho Docker example #300

merged 1 commit into from
May 4, 2025

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agebhar1
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@agebhar1 agebhar1 commented May 3, 2025

Fix docker-compose.yml to run properly and update readme.md to current configuration/setup.

@agebhar1
fix autopaho Docker example
63a4fd3 
Run example with Docker and Podman.
@MattBrittan
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Could you please add some detail re what issue this is fixing? (the example runs find for me as-is, I'm not sure why it would need to move to 8080).

@agebhar1
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agebhar1 commented May 4, 2025

Sure @MattBrittan.

Running the example with Podman, despite of the logging entry of Mosquitto

mosquitto-1  | 2025-05-04T12:40:38: Opening websockets listen socket on port 80.

the port is not in use which can be confirmed by

/ # netstat -tulpn
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name    
tcp        0      0 0.0.0.0:1883            0.0.0.0:*               LISTEN      -
tcp        0      0 :::1883                 :::*                    LISTEN      -

The subscribe demo can't connect to Mosquitto via Websocket on port 80 too:

sub-1  | autoPaho:failed to connect to ws://mosquitto:80: websocket connection failed: dial tcp 10.89.13.2:80: connect: connection refused
sub-1  | error whilst attempting connection: failed to connect to ws://mosquitto:80: websocket connection failed: dial tcp 10.89.13.2:80: connect: connection refused

Mosquitto switch from user root to mosquitto. I dont know when it binds to the privileged port. But Podman refuse to use/bind to the privileged port.

Running the example on Docker, everything works as-is.

Changing the port from 80 to 8080 enables the example to run on Docker and Podman.

@MattBrittan
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OK - I guess using non-privilidged ports makes sense. Thanks for the PR.

@MattBrittan MattBrittan merged commit fe504b0 into eclipse-paho:master May 4, 2025
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@agebhar1 @MattBrittan
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