C#如何通過Socket的方式獲取httponly cookie

正常情況下C#可以使用HttpWebRequest、HttpWebResponse和CookieContainer類來獲取Cookie，但是當Cookie設置為httponly，我們就不能用上面的方法獲取。這時候可以用Socket來模擬http提交。具體如下:

1.先取得默認DNS服務器地址：

IPEndPoint endPoint;
IPAddress IpList;
IpList = Dns.GetHostAddresses("www.7fenx.com")[0];

　　

2.模擬http請求，設置http頭：

 

 

StringBuilder sendString=new StringBuilder(200);
sendString.Append("POST "+ "/" + " HTTP/1.1\r\n");
sendString.Append("Accept: */*\r\n");
sendString.Append("Host: "+host+"\r\n");
sendString.Append("User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/28.0.1500.72 Safari/537.36\r\n");
sendString.Append("Content-Type: application/x-www-form-urlencoded\r\n");
sendString.Append("Content-Length: "+sendData.Length+"\r\n");
sendString.Append("Connection: keep-alive\r\n\r\n");
sendString.Append(postData+"\r\n");

3.發送請求

byte[] sendBytes = Encoding.GetEncoding(endcoding).GetBytes(sendString.ToString());
int httpPoint = 80;
endPoint = new IPEndPoint(ip, httpPoint);
socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
socket.Connect(endPoint);
socket.Send(sendBytes,sendBytes.Length,0);

 

4.獲取服務器的返回信息

 

Byte[] byteReceive = new Byte[1024];
Int32 bytes = socket.Receive(byteReceive);
string str = Encoding.Default.GetString(byteReceive, 0, bytes);

　　

5.提取Cookie內容

Regex rgxCookie = new Regex("Set-Cookie:.*");
MatchCollection cookies = rgxCookie.Matches(cookie);

提取后需要做的就是解析Cookie就是一些字符串的處理。

附上網絡編程基礎知識地址：

http://www.7fenx.com/%E7%BD%91%E7%BB%9C%E7%BC%96%E7%A8%8B%E5%9F%BA%E7%A1%80%E7%9F%A5%E8%AF%86.html

初接觸網絡編程，如果哪里說錯請指出。

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