Port monitor for Win7 x64, to help debug my app which communicates with a socket server?

I'm developing C# software to talk to a 3rd party socket based server, "socketServer.exe".

There is an existing demo program that I can run which will let me do basic things, such as connect to "socketServer.exe" on localhost, port 5009, and grab some data.

What utility do you recommend to:

• 1) find out what ports "socketServer.exe" is using to communicate to the demo app;
• 2) monitor traffic on port 5009 between my app ("myapp.exe") and socket 5009, both o开发者_运维问答n localhost.

Try nettool @ http://nettool.sourceforge.net/

Hope this helps. Johan