【ASP.NET】编写自己的Web服务器

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　　自己写一个简单的Web服务器，对加深理解Http协议有很好的帮助，下面就看一下一个基于TcpListener的Web服务器：

class Program
    {
        static void Main(string[] args)
        {
            IPAddress address = IPAddress.Loopback;
            IPEndPoint endPoint = new IPEndPoint(address, 49152);

            TcpListener newserver = new TcpListener(endPoint);
            newserver.Start();
            Console.WriteLine("开始监听......");
            
            while (true)
            {
                TcpClient newclient = newserver.AcceptTcpClient();
                Console.WriteLine("已经建立连接");

                NetworkStream ns = newclient.GetStream();

                System.Text.Encoding utf8 = System.Text.Encoding.UTF8;

                byte[] request=new byte[4096];
                int lehgth = ns.Read(request, 0, 4096);
                string requestString = utf8.GetString(request);

                Console.WriteLine(requestString);

                string statusLine = "HTTP/1.1 200 OK\r\n";
                byte[] statusLineBytes = utf8.GetBytes(statusLine);

                string responseBody = "<html><head><body><h1>hello world</h1></body></head></html>";

                byte[] responseBodyBytes = utf8.GetBytes(responseBody);

                //回应头部分
                string responseHeader = string.Format("Content-Type:text/html;charset=UTF-8\r\nContent-Length:{0}\r\n",responseBody.Length);

                byte[] responseHeaderBytes = utf8.GetBytes(responseHeader);

                ns.Write(statusLineBytes, 0, statusLineBytes.Length);
                ns.Write(responseHeaderBytes, 0, responseHeaderBytes.Length);
                ns.Write(new byte[] { 13, 10 }, 0, 2);
                ns.Write(responseBodyBytes, 0, responseBodyBytes.Length);
                newclient.Close();

                if (Console.KeyAvailable)
                    break;
            }
            newserver.Stop();
        }