Fiddler Learning Basics (I.)

Fiddler official website and: Http://www.telerik.com/fiddler

1. Fiddler principle:

As a System agent, all HTTP requests from Microsoft Internet Services (WinInet) go through fiddler before reaching the target Web server, and all HTTP responses flow through fiddler before returning to the client.

So how to test it?

Can be verified by the configuration of IE. My local is IE11 for example, the Operation tool--internet option--Link--LAN settings, as shown when the Fiddler is started automatically tick the proxy server settings, of course, the Shutdown fiddler will be automatically released.

2. Install Fiddlerscript-editor:

: Http://www.telerik.com/download/fiddler/fiddlerscript-editor

After the installation is complete, start fiddler, will be more fiddlerscript function.

3. Simply take a look at the HTTP request.

Reference http://www.cnblogs.com/yin-jingyu/archive/2011/08/01/2123548.html

The HTTP answer code is recorded here for easy viewing

HTTP Status Code list

1**: Request received, continue processing

2**: Successful operation received, analysis, acceptance

3**: Completion of this request must be further processed

4**: request contains an error syntax or cannot be completed

5**: The server failed to perform a fully valid request

100--customer must continue to make a request

101--client requires server to convert HTTP protocol version on request

200--Trading Success

201--prompt to know the URL of the new file

202--accepted and processed, but processing not completed

203--return information is indeterminate or incomplete

204--request received, but return information is empty

205--the server has completed the request, the user agent must reset the files that are currently viewed

206--server has completed a partial user's GET request

300--requested resources can be obtained in multiple places

301--Delete request data

302--found the request data at a different address

303--advising customers to access other URLs or access methods

304--client has performed a get, but the file has not changed

The resource requested by 305--must be obtained from the address specified by the server

306--code used in previous versions of HTTP, no longer used in the current version

307--declaring the requested resource temporary deletion

400--error requests, such as syntax errors

401--Request Authorization failed

402--reserved valid Chargeto header response

403--Request not allowed

404--no files, queries, or URLs found

405--the method defined by the user in the Request-line field does not allow

406--request resource is inaccessible based on accept drag sent by user

407--similar to 401, the user must first be authorized on the proxy server

408--client does not complete the request within the user-specified time of starvation

409--the current resource state, the request cannot be completed

This resource is no longer available on the 410--server and has no further reference address

411--server rejects user-defined Content-length property requests

412--one or more request header fields are incorrect in the current request

413--the requested resource is greater than the size allowed by the server

414--The requested resource URL is longer than the length allowed by the server

415--requesting a resource does not support requesting an item format

The 416--request contains a range request header field that does not have a range indication value within the current request resource, requesting

Also does not contain the If-range request header field

417--server does not meet the expected value specified by the request Expect header field, if it is a proxy server, it may be the next

A primary server does not meet the request

500--Server generates internal error

501--server does not support the requested function

502--server is temporarily unavailable, sometimes to prevent system overloads

503--server overload or pause repair

504--Gateway overload, Server uses another gateway or service to respond to users, waiting time setting value is longer

505--server does not support or deny the HTTP version specified in the request header

Fiddler Learning Basics (I.)