Tomoya Fujita

To be honest, i really do not know. Something i would try is, - enable log level debug for talker and listener, and see if anything happens on those nodes....

> but executing systemctl stop user-1000.slice still causes the same issue. that stops user slice, so it affects everything under this user id. and then removes user's runtime directory /run/user/UID...

@skemp117 can you provide minimal reproducible example? i cannot reproduce the issue with following sample. - https://github.com/fujitatomoya/ros2_test_prover/blob/master/prover_rclpy/src/rclpy_1046.py ```bash ### start count publishers and subscriber sample above root@tomoyafujita:~/ros2_ws/colcon_ws# ros2 run prover_rclpy...

> I am calling this from a launch file. Could that be the issue? No i do not think so. the executable process space will be the same, it does...

> ActionClient::wait_for_action_server never actually waits and always returns [here](https://github.com/ros2/rclcpp/blob/ba175922d3008704c67b10fe82a2f7c0cbee2be4/rclcpp/src/rclcpp/client.cpp#L154) isn't that here? according to your fix. https://github.com/ros2/rclcpp/blob/ba175922d3008704c67b10fe82a2f7c0cbee2be4/rclcpp_action/src/client.cpp#L192 https://github.com/ros2/rclcpp/blob/ba175922d3008704c67b10fe82a2f7c0cbee2be4/rclcpp/src/rclcpp/client.cpp#L154 seems to be no problem for me, since `context_` is stored here?...

CC: @MiguelCompany @eboasson @asorbini @clalancette @wjwwood

@eboasson @ciandonovan really appreciate for sharing experience and information, that is really good information for us and ROS 2 users. (and thanks for being responsive too 👍 ) I think...

@EduPonz > The important bit is to add the true tag to the UDPv4 transport descriptor. This will make the call to write to the socket non-blocking. is this the...

@tonynajjar i think this is useful for supporting 3rd party application when we do debugging. besides a list of `topics` and `services`, maybe the following could be also considered in...

@asorbini we would like to request the another review on this.