ROS2 No topic

[fish1sheep]

After compiling the project and running the following command:

./talker -m client -a <zenoh-router-address>

Then opening another terminal and running:

ros2 topic list

The topic /picoros/chatter is not displayed. I don't know where the error is?

ROS2-kilted ubuntu24.04 amd64

[fish1sheep]

Switching the ROS 2 version from Kilted to Jazzy solved the issue, but I’m not sure what the root cause was.

[g4sp3r]

Hi @fish1sheep, thanks for reporting the issue.
Currently I don't have time to test on my side but you could try running with debug logging to see if we can narrow down what is different between versions that is causing failure.

• For rmw_zenoh run with RUST_LOG=debug in your environment. Compare kilted and jazzy logs and see if you can get any more info there (like versions of zenohd and configuration used printed when router starts)
• For pico-ros compile with -DZENOH_DEBUG=3 and -DPICOROS_DEBUG=1 and see if any additional errors get reported when using kilted.

[chat-l18l]

I tracked that down to blocking call on tcp socket. I will added full description and patch to other issue.

[chat-l18l]

I pasted my analyses and solution here, works fine for me now, (greetings from the Netherlands, I am not a robot ;-) )

#23