This testvar must be explicitly defined in the configuration file
Normally, CDRouter will select a new starting TCP/UDP port for TCP/UDP clients when the test run starts. This allows you to start and stop CDRouter and use different client ports each time. However, it is possible to force a specific starting port for test purposes. This can be helpful when you need to force a port to the same value each test run. The starting port number must be an integer from 1 to 65535.