使用UDP发送数据简单实现

UDP 是无连接传输协议，所以不需要在发送和接收数据前建立远程主机连接.但是需要远程主机绑定一个端口进行监听是否是有发送端的IP和端口发送来的。发送端同样要绑定一个端口向远程IP地址的一个端口发送数据。

这里是一个基本实现，没有使用多线程以及异步等：

namespace UDPSendClient

{

/// <summary>

/// Interaction logic for MainWindow.xaml

/// </summary>

public partial class MainWindow : Window

{

private UdpClient udpClient;

private IPEndPoint ipEndPoint;

public MainWindow()

{

InitializeComponent();

udpClient = new UdpClient(12345);

ipEndPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 2112);

}

private void Button_Click(object sender, RoutedEventArgs e)

{

byte[] bytes = new byte[1024];

bytes=Encoding.Default.GetBytes(this.txbMsg.Text);

udpClient.Send(bytes, bytes.Length, ipEndPoint);

}

}

}

namespace WpfUDPReceiveClient

{

/// <summary>

/// Interaction logic for MainWindow.xaml

/// </summary>

public partial class MainWindow : Window

{

private UdpClient udpServer;

private IPEndPoint ipEndPoint;

private int _abortThread = 0;

public MainWindow()

{

InitializeComponent();

udpServer = new UdpClient(2112);

ipEndPoint = new IPEndPoint(IPAddress.Parse("127.0.0.1"), 12345);

}

private void Window_Loaded(object sender, RoutedEventArgs e)

{

}

private void HandleReceived()

{

byte[] data = null;

while(_abortThread==0)

{

data = udpServer.Receive(ref ipEndPoint);

MessageBox.Show(Encoding.Default.GetString(data));

}

}

private void Button_Click(object sender, RoutedEventArgs e)

{

Thread thread = new Thread(HandleReceived);

thread.IsBackground = true;

thread.Start();

}

private void Button_Click_1(object sender, RoutedEventArgs e)

{

Interlocked.Exchange(ref _abortThread, 1);

}

}

}