[BUG] Cannot run multiple suites simultaneously - Error: No incomming connection from a debugger client

[Pawci3oo]

Describe the bug
Prior to version 1.3.0, I could run multiple test suites simultaneously in VS Code using RobotCode. Since the update, only the first suite runs — any subsequent ones fail to start.

Steps To Reproduce
Steps to reproduce the behavior:

1. Open VS code
2. Create 2 suites with tests
3. Run first suite
4. Run second suite

Expected behavior
Expected behavior: same as in version 1.2.0, where I was able to run multiple suites simultaneously.

Logs
Logs from output (RobotCode):
Starting debug launcher in stdio mode: c:\Python311\python.exe -u c:\Users\user\.vscode\extensions\d-biehl.robotcode-1.4.0\bundled\tool\robotcode debug-launch --stdio

Output from Terminal:
Error: No incomming connection from a debugger client

Desktop (please complete the following information):

• VS Code Version - 1.101.2
• RobotCode Version 1.4.0
• OS: Windows
• Python Version 3.11
• RobotFramework Version 7.2.2

[d-biehl]

You’re right—it isn’t working properly anymore. I suspect it’s because I “improved” the free-port detection logic to fix a macOS-specific issue.

That said, I’ve noticed it sometimes succeeds if I add a bit more delay—around 10 seconds—between starting each run. Do you see the same behavior on your end?