Small C++ or C# App that creates two virtual serial ports using a provided API and then minimizes to the desk tray.
Using a freely available Virtual Serial Port Emulator API.
The API docs with C++ and C# samples are here - [login to view URL]
API and Desktop app can be downloaded here - [login to view URL]
App should start and create to "TcpServer" type ports that connect to COM1 and COM2 and then minimize - that's it! See examples.