This helpful software is a free launch from Eric Lawrence and Microsoft, and it’s the most effective nonJava freeware HTTP proxy we’ve seen. It is kind of adept at manipulating HTTP and HTTPS requests. Fiddler runs solely on Windows and requires Microsoft’s .NET Framework 2.0 or later to be put in.
Fiddler’s interface is split into three panes: on the left, you’ll see an inventory of periods intercepted by Fiddler; the upper-right pane comprises detailed details about the request; and the decrease tracks information for the response. While shopping the Web as traditional in an exterior browser, Fiddler data every request and response within the left pane (each are included on one line as a session). When clicking on a session, the right-hand panes show the request and response particulars.
In order to tamper with requests and responses, it’s a must to allow Fiddler’s “breakpoints” function, which is accessed utilizing the Automatic Breakpoints entry underneath the Rules menu. Breakpoints are roughly analogous to Paros’ “trap” and WebScarab’s “intercept” performance.
Breakpoints are disabled by default, and they are often set to happen robotically earlier than every request or after every response. We usually set “before request,” which is able to then trigger the browser to pause earlier than every request, whereupon the final entry within the Fiddler session listing will likely be visually highlighted in pink. When choosing this session, a brand new vibrant pink bar seems between the request and response panes on theright aspect. This bar has two buttons that management subsequent circulate of the session: “break after response” or “run to completion.”
Now you possibly can tamper with any of the information within the request earlier than urgent both of those buttons to submit the manipulated request.
Fiddler robotically configures Internet Explorer to make use of its native proxy, however different browsers like Firefox could should be manually configured to localhost:8888.