Unity client hangs when debugging service

[moccij]

Describe the bug
If an Unity client requests a service on a node running on another process, and this process is being debugged for a certain amount of time while processing the response, then Unity hangs waiting on the service response even after the service process resumes and succesfully sends the response.

To Reproduce
Steps to reproduce the behavior:

1. Create a client on Unity and a compatible rclcpp service on another process
2. Call the service from Unity, waiting for the response
3. Debug service before sending response
4. Resume service after 1 minute
5. Unity client hangs

Expected behavior
Unity client should receive the response

Desktop (please complete the following information):

• OS: Windows 10
• ros2 distro: humble
• ros2-for-unity version: 1.1.0, git-sha 6a4203124f5cc07ecaba5f50185bcc5144118f64
• ros2cs version: git-sha 2a45785b080fffb3ae5e2f645e976a69698810f0
• ros2 dds middleware: cyclonedds
• ros2 environment setup: single pc