protected void OnMessageReceived(DatagramSocket sender, DatagramSocketMessageReceivedEventArgs args)
{
string remoteAddress = args.RemoteAddress.CanonicalName;
// Reject messages from this computer
if (remoteAddress == information.LocalAddress)
{
return;
}
DataReader reader = args.GetDataReader();
byte[] data = new byte[reader.UnconsumedBufferLength];
reader.ReadBytes(data);
EndpointInformation message = EndpointInformation.Deserialize(data);
if (message != null)
{
// Did message originate from a server?
if (message.Type == EndpointType.Server)
{
ServerDiscovered?.Invoke(this, message);
}
}
}
private async void OnMessageReceived(DatagramSocket sender, DatagramSocketMessageReceivedEventArgs args)
{
string remoteAddress = args.RemoteAddress.CanonicalName;
// Reject messages from this computer
if (remoteAddress == information.LocalAddress)
{
return;
}
using (DataReader reader = args.GetDataReader())
{
byte[] data = new byte[reader.UnconsumedBufferLength];
reader.ReadBytes(data);
EndpointInformation message = EndpointInformation.Deserialize(data);
if (message != null)
{
// Did message originate from a client?
if (message.Type == EndpointType.Client)
{
message = new EndpointInformation()
{
Address = information.LocalAddress,
Type = EndpointType.Server
};
await SendMessage(message);
}
}
}
}
public async Task Discover()
{
if (socket != null)
{
throw new InvalidOperationException();
}
EndpointInformation message = new EndpointInformation()
{
Address = information.LocalAddress,
Type = EndpointType.Client
};
await SendMessage(message);
}
protected async Task SendMessage(EndpointInformation message)
{
EndpointPair endpoint = new EndpointPair(
new HostName(information.LocalAddress),
information.MulticastPort,
new HostName(information.MulticastAddress),
information.MulticastPort
);
using (IOutputStream outputStream = await socket.GetOutputStreamAsync(endpoint))
using (DataWriter writer = new DataWriter(outputStream))
{
byte[] data = message.Serialize();
writer.WriteBytes(data);
await writer.StoreAsync();
}
}
