The HTTP version can only be viewed using the Console tab (make sure Net is selected)В вЂ“ click on the object name to view the response version.

Once you have some output simply click on the nameВ of any object to view the HTTP headers (as well as Request Method and Response Status Code) related to it.Д¬lick on the Cookies tab/panel for well formatted Cookie details.Д«rowsing to a new page or refreshing the page clears the current data. You can also use + + ] to move between tool tabsДata collection starts when you hit or browse to something within that tab. You can save time using + + Q instead this will take you straight to the Network tool.

Launch FirefoxвЂ™s built-in developer toolsВ using or + + I. Update: I finally did in this article: What The Heck Is SPDY? Firefox This relates to SPDY вЂ“ something IвЂ™m hoping to cover here sometime soon. Just one more thing вЂ“ youвЂ™ll note in the response headers of many sites (Google and Twitter for instance), the Alternate-Protocol header and value. I highly recommend you take a closer,В longer look at what is available if HTTP isВ part of your technical world. I can never remember the necessary details to launch and use them so I thought IвЂ™d publish this for my benefit and that of others (at least thatвЂ™s what my brain told me).ДЄs youвЂ™ll see if you ever use these tools, they offer farВ more in terms of features, filters and other uses than those IвЂ™ve described here. Handily enough recent versions of mostВ browsers now include built-in developer tools that offer all IВ need and avoid all the hassle. Installing browser plug-ins or stand-alone applications for this purpose is a pain, particularly in locked-down corporateВ and other highly secure environments. Checking for redirects (or redirect loops).Checking other header values, often for information leakage (CloudflareвЂ™s Server header for instance has a value of: cloudflare-nginx).Checking Cookies are sent or received, mostly in relation to load balancer persistence.Checking the correct HTTP version is used, this alone has solved many a performance issue.With the use of SSL/TLSВ growing rapidly even within private networks and the inability to decrypt PFS/DHE protected traffic, this can often be the only way to troubleshoot.В The reasons I may want to are many-fold and include I often find myself viewing HTTP headers (request and response) at the вЂclient sideвЂ™,В which are often muchВ quicker (and safer) than decrypting SSL/TLS traffic on a load balancer/ADC.

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