views:

151

answers:

10

It's probably some browser plugin or a proxy.

For example, I open google.com, and type something and press 'Search'. And I want to see all params of http-request (like, method, domain, params etc)

A: 

Here is the one and really cool one:

web-sniffer.net/

Sarfraz
really nice site for learning http
Roman
+5  A: 

Fiddler2

It will show all the HTTP requests leaving your computer. Covering all the browsers, and all the other applications.

Ivan Krechetov
This isn't a mozilla-plugin, however.
Broam
+1  A: 

WIRESHARK

TheMachineCharmer
probably a bit heavy-duty for web dev, or the use case here
Richard
Wireshark is the one tool to rule them all. Webdevs are smart guys(or girls) by the way ;-)
TheMachineCharmer
+1  A: 

If you're using Firefox, HttpFox is excellent for this. Can inspect all GET/POST content, headers etc.

Richard
I will recommend HttpFox too, I like it.
Steve Zhang
A: 

httpwatch An HTTP Viewer and HTTP Sniffer for IE and Firefox

Clover
+1  A: 

If using Firefox, Live HTTP Headers is a nice add-on:

https://addons.mozilla.org/en-US/firefox/addon/3829

stusmith
A: 

Firebug's Net section has some of the relevant information, but it's more of response/time loading time. The headers are present however.

Broam
A: 

I use Live HTTP Headers and Firebug plugins for Firefox to see live data coming from a website.

If you're just looking for what could be in it, take a look at the w3c standard here, the original RFC, or the updated RFC.

Ed Griebel
A: 

If you're not using Windows, disregard this answer.

I used to use Wireshark, but I recently started using Microsoft Network Monitor which is very nice as well. If you have your own custom protocol (which I know the OP does not), it is very easy to write your own protocol parser, which is a big PITA with Wireshark.

Graeme Perrow
A: 

Firebug

If you are going to do monitoring and debugging in Firefox only.

Simple, lightweight, clean, and easy to use

Dennis Cheung