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5. Power Tools for Web Developers > 51. Display HTTP Headers

Display HTTP Headers

See the raw information exchanged between Firefox and web servers.

This hack explains how to inspect the HTTP information that goes back and forth between Firefox and web servers. The simplest way to see web requests is, of course, to examine the server’s logs. That strategy doesn’t yield every byte of information, though, so here are some alternatives. There are also many tools that can help with cookies [Hack #52] . You might also want Firefox diagnostics [Hack #96] .

Get the Live HTTP Headers Extension

The Live HTTP Headers extension is available at http://livehttpheaders.mozdev.org/. After installation, HTTP requests and response headers are logged to a separate window. Figure 5-7 shows sample output after a single request. Requests are captured to this window only when the window is open.


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