I'm using Ruby+Watir to request pages through Firefox.

I would like to record the headers and content of every http request made through the browser.

Would it be possible to configure a proxy solution to store this information, either in a file or pipe it into an application?

I'm running Ubuntu x64.

// Edit:

I would like to store the data in logs because I would like to view it later. Preferably, I am looking for a solution that runs quietly in the background and stores the headers/content in files.

  • 1
    Do you need to save it for later, or do you just want to view the data?
    – user1931
    Feb 5, 2010 at 20:39

7 Answers 7


If you have access to a Windows virtual machine or any other Windows physical machine, you can run Fiddler which should do exactly what you want.

After a brief look, I did find a program called Charles which some people refer to as "Fiddler for Linux", but I have no experience using it.

  • Last time I installed Fiddler it installed something called FiddlerHook on FF. Maybe that does what he's looking for?
    – hyperslug
    Apr 4, 2010 at 13:38

Check Proxy Sniffer - it has free edition.


Try to use this Free HTTP Testing tool.


Burp Proxy

You can also try the Wireshark sniffer with appropriate filtering options. One general note on Windows self sniffing (sniffing on the loopback device) is that it is hard. But you use Ubuntu so it should work fine.


If it's just Firefox you want, you can use the Tamper Data addon to view (and edit) these requests.


I use the HttpFox extension for this sort of thing.

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  • 1
    Doesn't appear to support logging. Sep 6, 2011 at 11:45

You can access the firefox log to trace each http request. It is not done by default. Instructions are available at Mozilla

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