I hope you are aware that the ROS 2 alpha 8 version (of this thread) has been superseded by several new versions. So you might want to make sure to build on top of the latest release which is [ROS Crystal](https://discourse.ros.org/t/ros-2-crystal-clemmys-released/7137). [quote="jwillemsen, post:17, topic:548"] I found out that ROS2 does some tricky things with DDS Guids and InstanceHandle types which are outside of the DDS specification. [/quote] It would be good to point to specific code snippets when making a statement like that to clarify what exactly you are referring to. Also any DDS specific API usage is encapsulated in the RMW implementation for that specific vendor. So each RMW implementation chooses how it wants to implement the RMW interface. If you think some of the implementation could be updated please feel free to fill a ticket (or even better a pull request) in the corresponding repository. --- [Visit Topic](https://discourse.ros.org/t/ros-2-alpha8/548/18) or reply to this email to respond. If you do not want to receive messages from ros-users please use the unsubscribe link below. If you use the one above, you will stop all of ros-users from receiving updates. ______________________________________________________________________________ ros-users mailing list ros-users@lists.ros.org http://lists.ros.org/mailman/listinfo/ros-users Unsubscribe: