C#如何通过Socket的方式获取httponly cookie_.NET_编程开发_程序员俱乐部

正常情况下C#可以使用HttpWebRequest、HttpWebResponse和CookieContainer类来获取Cookie，但是当Cookie设置为httponly，我们就不能用上面的方法获取。这时候可以用Socket来模拟http提交。具体如下:

1.先取得默认DNS服务器地址：

class="brush:csharp;gutter:false;">IPEndPoint endPoint;
IPAddress IpList;
IpList = Dns.GetHostAddresses("www.7fenx.com")[0];

2.模拟http请求，设置http头：

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.发送请求

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.获取服务器的返回信息

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

5.提取Cookie内容

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

提取后需要做的就是解析Cookie就是一些字符串的处理。

附上网络编程基础知识地址：

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

初接触网络编程，如果哪里说错请指出。

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