//客户端发送数据，等待服务器数据并接收

public static string Client(string cparam,int serverStrNum,string StrIp,string StrPort)
{

            //
            TcpClient tcpclnt = new TcpClient();
            tcpclnt.Connect(StrIp, int.Parse(StrPort));

            //
            NetworkStream stm = tcpclnt.GetStream();

            //

            UTF8Encoding asen = new UTF8Encoding();
            byte[] ba = asen.GetBytes(cparam);
            if (stm.CanWrite)
                stm.Write(ba, 0, ba.Length);
            //
            byte[] bb = new byte[serverStrNum];
            while (stm.Read(bb, 0, serverStrNum).ToString().Trim()=="") { }
            if (stm.DataAvailable)
                stm.Read(bb, 0,serverStrNum);

            //
            string req = System.Text.Encoding.UTF8.GetString(bb);

            //

            stm.Close();
            tcpclnt.Close();
            return req;
}

//服务器类

public class Server
{

                //
                bool ServerRun = true;

                //
                TcpListener tcpListener = null;

                //
                Thread SerTh;

                //
                IPEndPoint SerIpendPoint;

                //

                string[] parameter;
public static string Server(string sparam,string ip,string port)
{

                //
                SerIpendPoint= new IPEndPoint(IPAddress.Parse(ip), Int32.Parse(port));
                tcpListener = new TcpListener(SerIpendPoint);
                tcpListener.Start();

                //
                SerTh = new Thread(new ThreadStart(ServerWorking));
                ServerRun = true;
                SerTh.Start();
}
public bool StopServer()
{
            try
            {
                ServerRun = false;
                tcpListener.Stop();
                SerTh.Abort();
                return (true);
            }
            catch
            {
                return (false);
            }
}
private void ServerWorking()
{
            try
            {
                while (ServerRun)
                {
                    Socket QS;
                    QS = TcpListener.AcceptSocket();
                    Byte[] Stream = new Byte[1024];
                    QS.Receive(Stream);

                    //
                    string clientStr = System.Text.Encoding.UTF8.GetString(Stream);
                    string serverStr = DataConvert(clientStr);

                    //
                    UTF8Encoding SendByte = new UTF8Encoding();
                    QS.Send((SendByte.GetBytes(serverStr)));
                    //string FileUrl;
                    //QS.SendFile(FileUrl);
                    QS.Close();
                }
            }
            catch { }

}

private string  DataConvert(string clientStr);

{

            string serverStr=clientStr;

            return serverStr;

}
        private string[] SplitParam(string str,int ParamNum)
        {
            parameter = new string[ParamNum];//保存接收的参数
            for (int i = 0; i < ParamNum; i++)
            {
                parameter[i] = "";
            }
            int j = 0;//参数指针
            for (int i = 0; i < str.Length; i++)
            {
                if (str[i] != ';')
                {
                    if (str[i] == '/0')
                    {
                        break;
                    }
                    parameter[j] += str[i].ToString().Trim();
                }
                else
                {
                    j++;
                }
            }

         return  parameter;
        }
}