我如何监控cookie是否被发送到它起源的其他域?

I am trying to write a program that will verify that all cookies sent out from the machine are in fact going to the domain they came from. This is part of a larger security project to detect cookie based malicious attacks (such as XSS). The main snag for this project is actually detecting the out-going cookies. Can someone point me in the right direction for monitoring out-going HTTP traffic for cookie information? Other information about the project: This is a windows application written in C and numerous scripting languages. Thanks so much for the help.I am trying to write a program that will verify