C#中用socket连接web服务器出现“远程主机强迫关闭了一个现有的连接”的错误，怎么处理

[nickelzhang]

  public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnDownload_Click(object sender, EventArgs e)
        {
            string host = "www.baidu.com";
            int port = 80;

            string result = SocketSendReceive(host, port);
            Console.WriteLine(result);
        }
        private static Socket ConnectSocket(string server, int port)
        {
            Socket s = null;
            IPHostEntry hostEntry = null;

            // Get host related information.
            hostEntry = Dns.GetHostEntry(server);

            // Loop through the AddressList to obtain the supported AddressFamily. This is to avoid
            // an exception that occurs when the host IP Address is not compatible with the address family
            // (typical in the IPv6 case).
            foreach (IPAddress address in hostEntry.AddressList)
            {
                IPEndPoint ipe = new IPEndPoint(address, port);
                Socket tempSocket =
                    new Socket(ipe.AddressFamily, SocketType.Stream, ProtocolType.Tcp);

                tempSocket.Connect(ipe);

                if (tempSocket.Connected)
                {
                    s = tempSocket;
                    break;
                }
                else
                {
                    continue;
                }
            }
            return s;
        }

        // This method requests the home page content for the specified server.
        private static string SocketSendReceive(string server, int port)
        {
            string request = @"GET / HTTP/1.1
Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/msword, application/x-shockwave-flash, */*
Accept-Language: zh-cn
UA-CPU: x86
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)
Host: www.baidu.com.cn
Connection: Keep-Alive";
            Byte[] bytesSent = Encoding.ASCII.GetBytes(request);
            Byte[] bytesReceived = new Byte[1024];

            // Create a socket connection with the specified server and port.
            Socket s = ConnectSocket(server, port);

            if (s == null)
                return ("Connection failed");


            // Send request to the server.


            // Receive the server home page content.
            int bytes = 0;
            string page = "Default HTML page on " + server + ":\r\n";

            // The following will block until te page is transmitted.
            s.Send(bytesSent, bytesSent.Length, 0);
            //do
            {
                bytes = s.Receive(bytesReceived, bytesReceived.Length, 0);//运行到这里卡住！一段时间后出现错误
                page = page + Encoding.ASCII.GetString(bytesReceived, 0, bytes);
            }
            //while (bytes == 1024);

            return page;
        }

[zouqiang122]

顶

[zouqiang122]

up

[向着朝阳出发]

俺也遇到这样的问题了， 不知道该怎么解决， 应该是线程间的互斥吧。