Resource Profile:
Fiddler5Chinese version is a web developer must have website data table capture software, can real-time monitor and analyze the server response data, you can use it to detect the interaction between the web page and the server, to provide data feedback for the testers to understand the operation of the site.
Fiddler5 Software Features
performance testing
Fiddler gives you an at-a-glance view of “total page weight”, HTTP caching and compression. Isolate performance bottlenecks with rules such as “Flag any uncompressed response larger than 25kb”.
Customizable free tools
Benefit from a rich extensibility model, from simple FiddlerScript to powerful extensions that can be developed in any .NET language.
web session operation
Edit web sessions easily: pause session processing and allow changes to requests/responses by simply setting a breakpoint. Write your own HTTP requests and run them through Fiddler.
safety test
Decrypt HTTPS traffic and display and modify web application requests using man-in-the-middle decryption techniques. Configure Fiddler to decrypt all traffic, or only specific sessions.
HTTP / HTTPS traffic logging
Use Fiddler to log all HTTP(S) traffic between your computer and the Internet. Debug the traffic of almost all proxy-enabled applications (IE, chrome, Safari, Firefox, Opera, etc.).
web debugging
Debug traffic from PC, Mac or linux systems and mobile (iOS and Android) devices. Ensure correct cookies, headers and caching instructions are transferred between client and server. Support any framework including .Java, Ruby, etc.
Featured Description
Set a breakpoint to see all of Fiddle's “in” and "out" data.
Easier than other network debuggers
Provide complete http communication and information
Provides a user-friendly format
Ability to record and check all http traffic between your computer and the Internet.
Flexibility is great and can support numerous http debugging tasks
Includes a powerful event-based scripting subsystem
Ability to use .net framework language extensions
Fiddler is what it is:
Fiddler is located on the client and server side of the HTTP proxy , is currently one of the most commonly used http packet capture tool . It can record all HTTP requests between the client and the server , you can target specific HTTP requests , analyze the request data , set breakpoints , debug web applications , modify the requested data , and even modify the data returned by the server , the function is very powerful , it is a web debugging tool .
Since it is a proxy, that is to say: all requests from the client will first go through Fiddler and then forwarded to the corresponding server, and vice versa, all responses from the server side will first go through Fiddler and then sent to the client, based on this reason, Fiddler supports all the browsers and applications that can be set up with an http proxy of 127.0.0.1:8888. applications. After using Fiddler, the web client and server requests are shown below:
Fiddler is a very powerful web debugging tool , in short you can use it to intercept the browser to send packets to the server , and after modification to send out , which is very useful in debugging SQL injection or other website logic attack vulnerabilities , of course, there are other tools can be realized to intercept packets and replay the attack , such as socketexpert+NC or burpsuite can be realized. But in comparison, Fiddler is the most convenient to use.
Fiddler is a free shareware program, you can go to the official website to download (Fiddler official website).The principle of Fiddler is shown in the following figure, as can be seen from the figure, Fiddler acts as an intermediary agent between the Browser (Browser) and Server (Server), so it is not difficult to understand why Fiddler can intercept the packets sent out by the browser and modify the packets returned by the server. packets sent out by the browser and modify the packets returned by the server.
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