摘自《Asp.Net 本质论》作者：郝冠军
/*
为了简化基于TCP协议的监听程序，.NET在System.Net.Sockets命名空间中提供了TcpListerer类，使用它，在构造函数中传递一组网络端点信息就可以准备好监听参数，而不再需要设置使用的网络协议等细节，调用Start方法之后，监听工作开始。AcceptTcpClient方法将阻塞进程，知道一个客户端的连接到达监听器，这个方法将返回一个代表客户端连接的代理对象
*/
1 class TcpListener_Study 2 { 3 public void CreateTcpLister() 4 { 5 //获得本机的loopback网络地址，即127.0.0.1 6 IPAddress address = IPAddress.Loopback; 7 //创建可以访问的端点，8974 为0表示一个空闲的端口号 8 IPEndPoint endpoint = new IPEndPoint(address, 8974); 9 10 TcpListener newserver = new TcpListener(endpoint); 11 newserver.Start(); 12 Console.WriteLine("开始监听，端口号：{0}", endpoint.Port); 13 while (true) 14 { 15 //等待客户端连接 16 TcpClient newclient = newserver.AcceptTcpClient(); 17 Console.WriteLine("已建立连接"); 18 //得到一个网络流 19 NetworkStream ns = newclient.GetStream(); 20 21 //准被读取客户端请求的数据，读取的数据放在一个数组中 22 byte[] request = new byte[4096]; 23 24 int lentth = ns.Read(request, 0, 4096); 25 26 string requeststring = Encoding.UTF8.GetString(request, 0, lentth); 27 28 Console.WriteLine(requeststring); 29 30 //回应状态行 31 string statusLine = "Http/1.1 200 ok "; 32 byte[] statusLineBytes = Encoding.UTF8.GetBytes(statusLine); 33 //准备发送到客户端的网页 34 string responseBody = "<html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title>Socket Study </title></head><body><form id="form1" runat="server"><div>Hello World ,Socket Study </div> </form></body></html>"; 35 byte[] responseBytes = Encoding.UTF8.GetBytes(responseBody); 36 string responseHeader = string.Format("Content-type:text/html; charset=UTF-8 Content-length:{0} ", responseBody.Length); 37 byte[] responseHeaderBytes = Encoding.UTF8.GetBytes(responseHeader); 38 //向客户端发送状态信息 39 ns.Write(statusLineBytes, 0, statusLineBytes.Length); 40 //发送回应头 41 ns.Write(responseHeaderBytes, 0, statusLineBytes.Length); 42 43 44 ns.Write(new byte[] { 13, 10 },0,2); 45 //发送内容 46 ns.Write(responseBytes, 0, statusLineBytes.Length); 47 newclient.Close(); 48 if (Console.KeyAvailable) 49 { 50 break; 51 } 52 newserver.Stop(); 53 } 54 } 55 }
/*
为了进一步简化http协议的监听器，.Net在命名空间System.Net中提供了HttpListener类，伴随这个对象，.NET提供了一系列相关
* 对象封装了HTTP的处理工作。
*
*/
1 class HttpLisener_Study 2 { 3 public void CreateHTTPLister() 4 { 5 if (!HttpListener.IsSupported) 6 { 7 throw new System.InvalidOperationException("系统必须为xp sp2 server03 以上版本"); 8 } 9 string[] prefixes = new string[] { "http://localhost:8974/" }; 10 11 HttpListener listener = new HttpListener(); 12 foreach (string s in prefixes) 13 { 14 15 listener.Prefixes.Add(s); 16 } 17 listener.Start(); 18 Console.WriteLine("监听中"); 19 while (true) 20 { 21 //阻塞线程，直到请求到达 22 HttpListenerContext context = listener.GetContext(); 23 Console.WriteLine("已建立连接"); 24 25 HttpListenerRequest request = context.Request; 26 Console.WriteLine("{0}{1} http/1.1", request.HttpMethod, request.RawUrl); 27 Console.WriteLine("Accept:{0}", string.Join(",", request.AcceptTypes)); 28 Console.WriteLine("Accept-language:{0}",string.Join(",",request.UserLanguages)); 29 30 Console.WriteLine("User-Agent:{0}", string.Join(",", request.UserAgent)); 31 32 Console.WriteLine("Accept-Encoding:{0}", string.Join(",", request.Headers["Accept-Encoding"])); 33 34 Console.WriteLine("Connection:{0}", request.KeepAlive ? "Keep-Alive" : "close"); 35 36 Console.WriteLine("Host:{0}", request.UserHostName); 37 Console.WriteLine("Pragma:{0}", request.Headers["Pragma"]); 38 39 //取得回应对象 40 HttpListenerResponse response = context.Response; 41 string responseString = "<html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title>Socket Study </title></head><body><form id="form1" runat="server"><div>Hello World ,Socket Study </div> </form></body></html>"; 42 response.ContentLength64 = Encoding.UTF8.GetByteCount(responseString); 43 response.ContentType = "text/html;charset=UTF-8"; 44 //输出回应内容 45 System.IO.Stream output = response.OutputStream; 46 System.IO.StreamWriter writer = new System.IO.StreamWriter(output); 47 writer.Write(responseString); 48 writer.Close(); 49 if (Console.KeyAvailable) 50 { 51 break; 52 } 53 54 listener.Stop(); 55 } 56 } 57 }