[NBLUG/talk] Want to see what HTTP is leaving my system

[Roger House]

I'm writing Java code to access a web service, using HttpCore and 
HttpClient to create and send HTTP.  This is the first time I've done 
this, so I'm taking two steps forward and one back (or vice versa at 
times).  I'd
like to see exactly what request line and header lines are being sent to 
the web server.  I would appreciate
any recommendations for an app which will show me this information.

Thanks.

Roger House