Is there an open source (read free) tool that allows me to see my browser's HTTP commands? [closed]

Question

I am getting into HTTP protocol specifics and I would like to see/understand the calls my browser makes as it is being used. I use Firebug (with Firefox) to look at/debug AJAX interactions, etc, but don't see the full HTTP conversation.

Is there something similar for viewing HTTP commands issued by a browser?

Answer 1

Fiddler is pretty good for looking at the HTTP level, and wireshark will let you look at whats going on at the TCP level.

Answer 2

HttpFox or the venerable LiveHttpHeaders

Answer 3

Yes, you can monitor your connection with Wireshark.

Answer 4

I use Tamper Data, a Firefox add-on, to see HTTP requests and responses, and to manipulate them.