public void Socket_BeginReceiveFromV4IPEndPointFromV4Client_Throws()
{
Socket socket = new Socket(SocketType.Dgram, ProtocolType.Udp);
socket.DualMode = false;
EndPoint receivedFrom = new IPEndPoint(IPAddress.Loopback, UnusedPort);
Assert.Throws<ArgumentException>(() =>
{
socket.BeginReceiveFrom(new byte[1], 0, 1, SocketFlags.None, ref receivedFrom, null, null);
});
}