private async void HandleRequest(byte[] data, IPEndPoint remote)
{
DefaultDnsRequest request = null;
try
{
request = DefaultDnsRequest.FromArray(data);
OnRequested(request);
IDnsResponse response = await resolver.Resolve(request);
OnResponded(request, response);
await udp
.SendAsync(response.ToArray(), response.Size, remote)
.WithCancellationTimeout(UDP_TIMEOUT);
}
catch (SocketException e)
{
OnErrored(e);
}
catch (ArgumentException e)
{
OnErrored(e);
}
catch (IndexOutOfRangeException e)
{
OnErrored(e);
}
catch (OperationCanceledException e)
{
OnErrored(e);
}
catch (IOException e)
{
OnErrored(e);
}
catch (ObjectDisposedException e)
{
OnErrored(e);
}
catch (DnsResponseException e)
{
IDnsResponse response = e.DnsResponse;
if (response == null)
{
response = DefaultDnsResponse.FromRequest(request);
}
try
{
await udp
.SendAsync(response.ToArray(), response.Size, remote)
.WithCancellationTimeout(UDP_TIMEOUT);
}
catch (SocketException)
{
}
catch (OperationCanceledException)
{
}
finally
{
OnErrored(e);
}
}
}
public ClientDnsRequest FromArray(byte[] message)
{
DefaultDnsRequest request = DefaultDnsRequest.FromArray(message);
return(new ClientDnsRequest(resolver, request));
}