ump 中使用ConnectAsync连接服务器出现AccessDenied

            clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            SocketAsyncEventArgs socketEventArg = new SocketAsyncEventArgs();
            socketEventArg.Completed += new EventHandler<SocketAsyncEventArgs>(OnConnect);
            socketEventArg.RemoteEndPoint = new IPEndPoint(IPAddress.Parse(serverIP), serverPort);
            socketEventArg.UserToken = clientSocket;

            clientSocket.ConnectAsync(socketEventArg);

这段代码连接失败，返回AccessDenied。


MSDN的说明是：An attempt was made to access a Socket in a way that is forbidden by its access permissions

权限不够！

那么哪里可以设置权限呢？

1.  Package.appxmanifest => 功能 ，然后勾选即可

2.  Package.appxmanifest => 右键 => 查看代码，然后加入如下代码

  <Capabilities>
    <Capability Name="internetClientServer" />
    <Capability Name="privateNetworkClientServer" />
  </Capabilities>

详细说明：https://msdn.microsoft.com/library/windows/apps/xaml/mt270968.aspx