Networking 使用Windows Phone 8 emulator的多播网络应用程序

我正在使用多播网络为WindowsPhone8实现一个多人纸牌游戏。 但是，当我尝试链接windows phone和emulator时，什么也没有发生（也没有错误）

我可以使用internet explorer上网冲浪，这样我的模拟器就可以连接到internet

我是否必须在模拟器上执行特殊操作才能使其执行多播操作？ 还是代码中缺少了什么

代码如下：

初始化

channel = new UdpChannel(IPAddress.Parse("224.109.108.106"), 3000);

this.channel.OnAfterOpened += new EventHandler<UdpPacketEventArgs>(channel_OnAfterOpen);

this.channel.OnPacketReceived += new EventHandler<UdpPacketEventArgs(Channel_PacketReceived);

this.channel.Open();

我的事件处理程序

private void Channel_PacketReceived(object sender, UdpPacketEventArgs e)
{
    MessageBox.Show("Something Received");
}

private void channel_OnAfterOpen(object sender, UdpPacketEventArgs e)
{
    this.Status.Text = "Connected";
}

有两个很好的样品：你看到了吗？

public class UdpPacketEventArgs : EventArgs
{
    public string Message { get; private set; }
    public string Source { get; private set; }

    public UdpPacketEventArgs(string source, string data)
    {
        this.Message = data;
        this.Source = source;
    }
}

private void Channel_PacketReceived(object sender, UdpPacketEventArgs e)
{
    MessageBox.Show("Something Received");
}

private void channel_OnAfterOpen(object sender, UdpPacketEventArgs e)
{
    this.Status.Text = "Connected";
}