anonymouse configuration

[christianw]

My config file contains

listener 1883 0.0.0.0
allow_anonymous true

However, no client can connect.

$ mosquitto_pub -h 127.0.0.1 -p 1883 -t test -m foo
Error: The connection was lost

The logfile states

1771435441: New connection from 127.0.0.1:58486 on port 1883.
1771435441: Client 127.0.0.1 [127.0.0.1:58486] disconnected: Permission denied.

Latest version of mosquitto from Ubuntu PPA.

What am I doing wrong?

[ralight]

I've tried to reproduce this but without any luck. The log message Client 127.0.0.1... shows that the broker believes your clientid is 127.0.0.1, which the mosquitto_pub command doesn't include.

Is there anything else you can say about your setup? This is Ubuntu 24.04 running on a VM/in docker/bare metal, version 2.1.0/2.1.1/2.1.2 of mosquitto, ... anything else you can think of that might help.

[christianw]

Thanks for your answer!

I am using Ubuntu 26.04 (not yet released) on bare metal, mosquitto 2.1.2 (but same with 2.0.22).

I don't understand your comment about 127.0.0.1 not included in mosquitto_sub. I thought it was included in the -h switch.

I have another Ubuntu server running 24.04.3, mosquitto 2.0.18-1build3 works perfectly with the identical configuration.

[christianw]

It works when I compile the latest version from Github. So I assume it is an issue for Ubuntu. Very strange though.

[ralight]

Thanks for the extra details. What I meant was that to get the log that you see you would have had to include -i 127.0.0.1 in the command line, which you showed you didn't. So definitely something strange.