bs结构socket(udp)通信

      以前我所做的基于socket通信都是采用cs结构，现公司有一个项目需要在bs中反控设备，于是研究了一番，现将成果公布，方便以后查阅。

      服务端：

      

            #region udp

            int recv;
            byte[] data = new byte[1024];

            //得到本机IP，设置TCP端口号         
            IPEndPoint ip = new IPEndPoint(IPAddress.Any, 2000);
            Socket newsock = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);

            //绑定网络地址
            newsock.Bind(ip);
            //等待客户机连接
            Console.WriteLine("This is a Server,Waiting for a client);

            //得到客户机IP
            IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
            EndPoint Remote = (EndPoint)(sender);
            recv = newsock.ReceiveFrom(data, ref Remote);
            Console.WriteLine("Message{0}: ", Remote.ToString());
            Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));

            //客户机连接成功后，发送信息
            string welcome = "hello,sean! ";

            //字符串与字节数组相互转换
            data = Encoding.ASCII.GetBytes(welcome);

            //发送信息
            newsock.SendTo(data, data.Length, SocketFlags.None, Remote);
            while (true)
            {
                data = new byte[1024];
                //发送接收信息
                recv = newsock.ReceiveFrom(data, ref Remote);
                Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));
                newsock.SendTo(data, recv, SocketFlags.None, Remote);
            }
        
            #endregion

 bs客户端(实际是发布iis所在的服务器)：

    public partial class _Default : System.Web.UI.Page
    {
        string host = "";
        int port = 0;
        protected void Page_Load(object sender, EventArgs e)
        {
           
        }        
        protected void Button2_Click(object sender, EventArgs e)
        {
            
            //int port = 5154;
            //host = "172.16.2.245";
            port = Int32.Parse(this.txt_port.Value.Trim());
            host = this.txt_ip.Value.Trim();

            //创建终结点EndPoint
            IPAddress ip = IPAddress.Parse(host);

            IPEndPoint ipe = new IPEndPoint(ip, port);   //把ip和端口转化为IPEndPoint的实例

            UdpClient sender1 = new UdpClient(); 
            //向服务器发送信息
            string sendStr = this.txt_info.Value; 
            byte[] bs = Encoding.ASCII.GetBytes(sendStr);   //把字符串编码为字节  
            lock (this)
            {
                sender1.Send(bs, bs.Length, ipe);
                this.txt_info.Value = "";
                Thread.Sleep(200);
                Receive(sender1);
            }            
            
        }

        public void Receive(UdpClient sender1)
        {          

            IPEndPoint RemoteIpEndPoint = new IPEndPoint(IPAddress.Any,2000);
            try
            {
                Byte[] receiveBytes = sender1.Receive(ref RemoteIpEndPoint);

                string returnData = Encoding.ASCII.GetString(receiveBytes);

                 this.txt_info.Value=("message received " +returnData.ToString());
            }
            catch (Exception e)
            {
               
            }
        }

    }

需要考虑并发操作，我在前台有相关操作限制，特殊情况特殊考虑