C# Socket

通过socket往一个服务器发送一条数据；

    public class SocketRequest
    {    
        //传入参数 hostname和port,messages是要发送的字符串
        public static string SendSocketRequest(string address, int port, string messages)
        {
            //IPAddress ip = DoGetHostAddresses("www.....com");
            IPAddress ip = DoGetHostAddresses(address);
            //int port = 8000;

            Socket ClientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            IPEndPoint Point = new IPEndPoint(ip, port);
            ClientSocket.Connect(Point);  //与远程主机建立连接

            string requestStr = messages; //要发送的数据的字符串

            byte[] message = Encoding.UTF8.GetBytes(requestStr);
            ClientSocket.Send(message); //发送数据

            byte[] receive = new byte[1024];
            int length = ClientSocket.Receive(receive);  // length 接收字节数组长度

            string responseStr = Encoding.UTF8.GetString(receive).Substring(0, length);

            ClientSocket.Close();  //关闭连接

            return responseStr;

        }

        public static IPAddress DoGetHostAddresses(string hostname)
        {
            IPAddress[] ips;
            ips = Dns.GetHostAddresses(hostname);
            return ips[0];
        }
    }