public async Task Start()
{
using (var udpClient = new UdpClient(AddressFamily.InterNetworkV6))
{
udpClient.Client.SetSocketOption(SocketOptionLevel.Socket,
SocketOptionName.ReuseAddress, true);
udpClient.Client.SetSocketOption(SocketOptionLevel.Socket,
SocketOptionName.ExclusiveAddressUse, false);
udpClient.Client.Bind(new IPEndPoint(IPAddress.IPv6Any, _localPort));
foreach (var nicIndex in CollectNetworkInterfaceIndexes())
{
try
{
udpClient.JoinMulticastGroup(nicIndex, _mcastGroup);
}
catch
{ }
}
while (true)
{
UdpReceiveResult result = await udpClient.ReceiveAsync().ConfigureAwait(false);
if (_qualifier.All(q => q.IsSourceQualified(result.RemoteEndPoint)))
{
MulticastMsgEventArgs e = new MulticastMsgEventArgs(result.RemoteEndPoint, result.Buffer);
OnMessageReceived(e);
}
}
}
}
protected void OnMessageReceived(MulticastMsgEventArgs e)
{
Volatile.Read(ref MessageReceived)?.Invoke(this, e);
}