private async Task HandleReceive(UdpReceiveResult received)
{
var message = Encoding.UTF8.GetString(received.Buffer);
if (!string.Equals(message, GrpcHandshakeClientMessage.Message))
{
_logger.LogDebug("Discarding message - invalid (Origin: {Origin})", received.RemoteEndPoint.Address.ToString());
return;
}
_logger.LogInformation("Received handshake from [{Address}]", received.RemoteEndPoint);
var ports = _settings.Value.PublicHttpsPorts;
var replyText = GrpcHandshakeFormatter.Write(Environment.MachineName, ports);
await _channel.SendToAsync(Encoding.UTF8.GetBytes(replyText), received.RemoteEndPoint);
_logger.LogDebug("Reply \"{Message}\" sent to {Address}", replyText, received.RemoteEndPoint.Address.ToString());
}
private void ServerContactReceived(UdpReceiveResult obj)
{
Log.Debug("Received UDP package from {Address}", obj.RemoteEndPoint.Address.ToString());
var message = GrpcHandshakeFormatter.Parse(obj.Buffer);
if (string.IsNullOrEmpty(message.MachineName))
{
Log.Debug("Discarding Endpoint because hostname is empty.");
return;
}
var index = _dataItems.FindIndex(d => CompareEndpoints(d.EndPoint, obj.RemoteEndPoint));
if (index >= 0)
{
Log.Trace("Updating endpoint for {Name} to {@Ports}", message.MachineName, message.Ports);
_dataItems[index].LastSeen = DateTime.Now;
_dataItems[index].HttpsPorts = message.Ports;
_dataItems[index].MachineName = message.MachineName;
MainThread.BeginInvokeOnMainThread(() => NotifyItemChanged(index));
// NotifyItemChanged(index);
}
else
{
_dataItems.Add(new ServerDataItem()
{
HttpsPorts = message.Ports,
MachineName = message.MachineName,
LastSeen = DateTime.Now,
EndPoint = obj.RemoteEndPoint
});
var indexUpdate = _dataItems.Count - 1;
Log.Trace("Adding endpoint for {Name}, at address {Endpoint} to {@Ports}", message.MachineName, obj.RemoteEndPoint, message.Ports);
MainThread.BeginInvokeOnMainThread(() => NotifyItemInserted(indexUpdate));
// NotifyItemInserted(_dataItems.Count - 1);
}
}
