title: Fiddler style application in C#
body: <p>I need to write a fiddler "lite" Windows forms application to perform some HTTP tracing of messages. Specifically I need to show the request/response XMLs to a server as they are occurring, highlighting certain elements etc. </p>
  
  <p>Could anyone point me to a F/OSS application doing something similar as a starter, or perhaps outline the classes I need to use? I am a bit of a newbie with networking classes in C# and appreciate all help. </p>
  
  <p>p.s. I cannot use Fiddler directly for several reasons, so that's not a valid answer. Thanks. </p>