UDP sender limits payloads to 24 bytes on ROS 2 Jazzy udp_driver package installed from apt

[lreiher]

Steps to reproduce

1. Install UDP driver from apt on ROS 2 Jazzy: sudo apt install ros-jazzy-udp-driver.
2. Run UDP sender.
3. Send a UdpPacket message with a data payload of, e.g., [1, 2, 3], or something longer than 24 bytes / 24 uint8.
4. Check Wireshark to observe that the UDP payload going out always has length 24, either padding with zeroes or cutting actual payload.

Troubleshooting

• the issue is fixed if the current main 9fff59f is built from source instead of installing from apt
• could have something to do with Fix udp_msgs conversion #90
• I couldn't figure out which version is released on apt
  • ROS Index says that the Jazzy release is following the main branch
  • I couldn't find the rosdistro PR that initally released the package for Jazzy

Potential Solution

Re-release for ROS 2 Jazzy (and potentially others, e.g., see this Humble PR #100)?

[a-strong-python]

I have the same problem.

Send a UdpPacket message with a data payload of, e.g., [1, 2, 3], or something longer than 24 bytes / 24 uint8.