Can localhost be both client and server for development?

Question

Referring to a question I asked on SuperUser, which is recommended to be ask on SO.

I am developing a console application that sends packet to a remote server on a specific TCP Port (55000). I only have one computer to develop and test on. Is it still possible to debug my program; i.e. when I F5 debug, I send a test packet (from localhost) to localhost which is listening.

Also, I need to open up a port for development. I follow the this instruction to open a port (55000) in Window 7.

But when I netstat, the port 55000 is not even listed (i.e. the Local Address of 0.0.0.0:55000 is not there...). I also tried restarting the computer, but persist the problem.

Answer 1

Yes, of course you can. Just run the server to listen on port 55000, and then connect to localhost on port 55000.