windows phone 7 与wifi小车的socket通信

wp7手机要对wifi小车发送控制指令，在建立好wifi连接之后，就要用socket通信了。之前介绍了703n路由里ser2net包的强大功能（能将ttl串口信号和net信号相互转换），下位机仍然只管接收发送串口信号就行。

其实也就是在wp7和703之间建立通信，发送网络指令。

添加这两个引用，原因就不说了

using System.Net;
using System.Net.Sockets;

定义几个变量
        private Socket sock = null;
        private string wifiIP = string.Empty;
        private int wifiPort;

        private ManualResetEvent MyEvent = null;

     private DnsEndPoint hostEntry;

 

在formload里写如下代码

            wifiIP = "路由器ip地址";
            wifiPort = "路由telnet端口";
            //建立一个终结点对像           
            hostEntry = new DnsEndPoint(wifiIP, wifiPort);
            //创建一个Socket对象  
            try
            {
                sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            }
            catch (Exception ex)
            {
               // sysInfo.Text = "与路由器连接失败";
            }
            if (sock != null)
            {
                connectsocket();
            }
            

 private void connectsocket()
        {
            if (sock != null)
            {
                SocketAsyncEventArgs connArg = new SocketAsyncEventArgs();
                // 要连接的远程服务器 
                connArg.RemoteEndPoint = new DnsEndPoint(wifiIP, wifiPort);
                // 操作完成后的回调 
                connArg.Completed += (sendObj, arg) =>
                {
                    if (arg.SocketError == SocketError.Success) //连接成功 
                    {
                        //Dispatcher.BeginInvoke(() => sysInfo.Text = "连接成功。");
                        
                    }
                    else
                    {
                        Dispatcher.BeginInvoke(() =>
                        {
                           // sysInfo.Text = "连接失败，错误：" + arg.SocketError.ToString();
                        });
                    }
                    // 向调用线程报告操作结束 
                    MyEvent.Set();
                };
                // 重置线程等待事件 
                MyEvent.Reset();
               // sysInfo.Text = "正在连接，请等候……";
                // 开始异连接 
                sock.ConnectAsync(connArg);
                // 等待连接完成 
                MyEvent.WaitOne(6000);
            }

        }

这样与路由就建立起了连接，接下来写个发送信息的方法：

   private void SendData(string data)
        {

       
            if (sock != null && sock.Connected)
            {
                SocketAsyncEventArgs sendArg = new SocketAsyncEventArgs();
                byte[] buffer = System.Text.Encoding.UTF8.GetBytes(data);
                sendArg.SetBuffer(buffer, 0, buffer.Length);
                // 发送完成后的回调 
                sendArg.Completed += (objSender, mArg) =>
                    {
                        // 如果操作成功 
                        if (mArg.SocketError == SocketError.Success)
                        {
                            //Dispatcher.BeginInvoke(() => sysInfo.Text = "发送成功。");
                            
                        }
                        else
                        {
                            Dispatcher.BeginInvoke(() =>
                                {
                                    //this.sysInfo.Text = "发送失败，错误：" + mArg.SocketError.ToString();
                                });
                        }
                        // 报告异步操作结束 
                        MyEvent.Set();
                    };
                // 重置信号 
                MyEvent.Reset();
               // Dispatcher.BeginInvoke(() => sysInfo.Text = "正在发送，请等候……");
                // 异步发送 
                sock.SendAsync(sendArg);
                // 等待操作完成 
                MyEvent.WaitOne(6000);
            }

        }