Tomoya Fujita

related to https://github.com/ros2/ros2/issues/1095

Related to https://discourse.ros.org/t/unconfigured-dds-considered-harmful-to-networks/25689/25

@dabonnie > Implement topic statistics in rcl +1

@dabonnie would you share your thoughts about the followings? - statistics for each publication. I think that this is useful to check which topic and publication is something wrong precisely....

@dabonnie > I'm not sure what you mean if something is wrong with the topic and publication If publisher A and B are publishing data in topic, statistics for each...

using 2 Raspi4 and docker `ros:rolling` image with host network, i am unable to reproduce this issue so far. Just FYI, followings are script and output. I've tried 20 times,...

could be related to https://github.com/ros2/rmw_fastrtps/issues/597 ?

> but essentially that is running all requests in series. the process is instantiated as background. so i think requests are happening in parallel.

> The fact that the exception is not happening with other implementations is that they return OK instead of TIMEOUT, so the race does happen, it's just not detected. i...

@vale unfortunately no, currently no such feature available. as we discussed before, it would be probably best that `rcl_send_request` should return TIMEOUT, so that rclcpp should throw an specific exception...