Socket发送问题

Question

以前没做过Socket，一个简单的问题，帮忙实现下：
1.已经有服务端IP和端口
2.有一个待发送的字符串strData
问题：怎样向服务端发送strData，并获得返回值？
谢谢

Answer 1

TcpClient tcpClient = new TcpClient ();
tcpClient.Connect (IPAddress.Parse("192.168.0.1"), 11003);NetworkStream netStream = tcpClient.GetStream ();
Byte[] sendBytes = Encoding.UTF8.GetBytes ("test");
netStream.Write (sendBytes, 0, sendBytes.Length);
byte[] bytes = new byte[tcpClient.ReceiveBufferSize];netStream.Read (bytes, 0, (int)tcpClient.ReceiveBufferSize);string returndata = Encoding.UTF8.GetString (bytes);Console.WriteLine ("服务器返回: " + returndata);netStream.Close();

Answer 2

Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
            IPEndPoint serverPoint = new IPEndPoint(IPAddress.Parse("192.168.2.222"), 8090);
            s.Connect(serverPoint);
            string input;
            while ((input = Console.ReadLine()).Length> 0)
            {
                byte[] data = Encoding.Default.GetBytes(input);
                s.Send(data);
            }

Answer 3

to cpio:
tcpClient不需要close吗，除netStream之外还有什么要close的？

Answer 4

   Thread t_linsten = new Thread(jf_socket.BeginListen);
            jf_socket.PRForm = this;
            t_linsten.Start(); //开始监听
        public void BeginListen()
        {
            IPAddress ServerIp = Dns.GetHostEntry(Dns.GetHostName()).AddressList[0];         
            IPEndPoint iep = new IPEndPoint(ServerIp, 8000);
            Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            byte[] byteMessage = new byte[100];
            socket.Bind(iep);
            while (true)
            {
                try
                {
                    socket.Listen(10);
                    Socket newSocket = socket.Accept();
                    newSocket.Receive(byteMessage);
                    Jf_Opereration oper = new Jf_Opereration();
                    oper.Tr_Serverinfo(Encoding.Default.GetString(byteMessage),out re_message,out re_manageinfo);
                    //跨线程消息处理
                    MethodInvoker mi = new MethodInvoker(FormShow);
                    prform.BeginInvoke(mi);
                }
                catch (SocketException ex)
                {
                    File.AppendAllText(@"log.txt",DateTime.Now.ToString() + ":          " + ex.ToString()  +   "  \n");
                    socket.Close();
                }
            }
        }
 public String Re_Message 
        {
            get { return re_message; }
        }        //主窗体
        public Form PRForm
        {
            get {
                return prform;
            }
            set {
                prform = value;
            }
        }
//发送消息       
        public bool BeginSend(IPAddress serverIp, Int32 port, string msg,out string out_err)
        {
            IPEndPoint iep = new IPEndPoint(serverIp, 8000);
            byte[] byteMessage = Encoding.Default.GetBytes(msg);
            Socket send_socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            out_err = null;
            try
            {
                send_socket.Connect(iep);
                send_socket.Send(byteMessage);
                return true;
            }
            catch (SocketException ex)
            {
                out_err = ex.ToString();
                return false;
            }
            finally
            {
                send_socket.Close();
            }
        }

Answer 5

String re_message, re_manageinfo;  //服务器返回信息和管理员信息
        Form prform;//主窗体  public bool Tr_Serverinfo(string message,out string re_msg,out string re_manageinfo) 
        {
}