C\#에서 Socket 을 사용 하여 웹 소스 코드 를 가 져 오 는 코드

WebToolkit 클래스:

 
using System; 
using System.Net.Sockets; 
using System.Text; 

namespace ConsoleApplication1 
{ 
class WebToolkit 
{ 
/// <summary> 
/// Url   
/// </summary> 
struct UrlInfo 
{ 
public string Host; 
public int Port; 
public string File; 
public string Body; 
} 

/// <summary> 
///   URL 
/// </summary> 
/// <param name="url"></param> 
/// <returns></returns> 
private static UrlInfo ParseURL(string url) 
{ 
UrlInfo urlInfo = new UrlInfo(); 
string[] strTemp = null; 
urlInfo.Host = ""; 
urlInfo.Port = 80; 
urlInfo.File = "/"; 
urlInfo.Body = ""; 
int intIndex = url.ToLower().IndexOf("http://"); 
if (intIndex != -1) 
{ 
url = url.Substring(7); 
intIndex = url.IndexOf("/"); 
if (intIndex == -1) 
{ 
urlInfo.Host = url; 
} 
else 
{ 
urlInfo.Host = url.Substring(0, intIndex); 
url = url.Substring(intIndex); 
intIndex = urlInfo.Host.IndexOf(":"); 
if (intIndex != -1) 
{ 
strTemp = urlInfo.Host.Split(':'); 
urlInfo.Host = strTemp[0]; 
int.TryParse(strTemp[1], out urlInfo.Port); 
} 
intIndex = url.IndexOf("?"); 
if (intIndex == -1) 
{ 
urlInfo.File = url; 
} 
else 
{ 
strTemp = url.Split('?'); 
urlInfo.File = strTemp[0]; 
urlInfo.Body = strTemp[1]; 
} 
} 
} 
return urlInfo; 
} 

/// <summary> 
///           
/// </summary> 
/// <param name="host"></param> 
/// <param name="port"></param> 
/// <param name="body"></param> 
/// <param name="encode"></param> 
/// <returns></returns> 
private static string GetResponse(string host, int port, string body, Encoding encode) 
{ 
string strResult = string.Empty; 
byte[] bteSend = Encoding.ASCII.GetBytes(body); 
byte[] bteReceive = new byte[1024]; 
int intLen = 0; 

using (Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)) 
{ 
try 
{ 
socket.Connect(host, port); 
if (socket.Connected) 
{ 
socket.Send(bteSend, bteSend.Length, 0); 
while ((intLen = socket.Receive(bteReceive, bteReceive.Length, 0)) > 0) 
{ 
strResult += encode.GetString(bteReceive, 0, intLen); 
} 
} 
socket.Close(); 
} 
catch { } 
} 

return strResult; 
} 

/// <summary> 
/// GET   
/// </summary> 
/// <param name="url"></param> 
/// <param name="encode"></param> 
/// <returns></returns> 
public static string Get(string url, Encoding encode) 
{ 
UrlInfo urlInfo = ParseURL(url); 
string strRequest = string.Format("GET {0}?{1} HTTP/1.1\r
Host:{2}:{3}\r
Connection:Close\r
\r
", urlInfo.File, urlInfo.Body, urlInfo.Host, urlInfo.Port.ToString()); 
return GetResponse(urlInfo.Host, urlInfo.Port, strRequest, encode); 
} 

/// <summary> 
/// POST   
/// </summary> 
/// <param name="url"></param> 
/// <param name="encode"></param> 
/// <returns></returns> 
public static string Post(string url, Encoding encode) 
{ 
UrlInfo urlInfo = ParseURL(url); 
string strRequest = string.Format("POST {0} HTTP/1.1\r
Host:{1}:{2}\r
Content-Length:{3}\r
Content-Type:application/x-www-form-urlencoded\r
Connection:Close\r
\r
{4}", urlInfo.File, urlInfo.Host, urlInfo.Port.ToString(), urlInfo.Body.Length, urlInfo.Body); 
return GetResponse(urlInfo.Host, urlInfo.Port, strRequest, encode); 
} 
} 
} 

호출 예시:

 
using System; 
using System.Text; 

namespace ConsoleApplication1 
{ 
//     
class Program 
{ 
public static void Main(string[] args) 
{ 
Console.WriteLine(WebToolkit.Get("https://www.jb51.net/t.asp?keyword=vbscript", Encoding.Default)); 
Console.ReadKey(); 
} 
} 
}