private async void HandleRequest(byte[] data, IPEndPoint remote)
{
DnsRequestMessage request = null;
try
{
request = DnsRequestMessage.FromArray(data);
OnEvent(OnRequested, new RequestedEventArgs(request, data, remote));
IResponse response = await _coder.Code(request);
OnEvent(OnResponded, new RespondedEventArgs(request, response, data, remote));
await _udp.SendAsync(response.ToArray(), response.Size, remote).WithCancellationTimeout(TimeSpan.FromMilliseconds(UDP_TIMEOUT));
}
catch (SocketException e) { OnError(e); }
catch (ArgumentException e) { OnError(e); }
catch (IndexOutOfRangeException e) { OnError(e); }
catch (OperationCanceledException e) { OnError(e); }
catch (IOException e) { OnError(e); }
catch (ObjectDisposedException e) { OnError(e); }
catch (Model.ResponseException e)
{
IResponse response = e.Response;
if (response == null)
{
response = DnsResponseMessage.FromRequest(request);
}
try
{
await _udp.SendAsync(response.ToArray(), response.Size, remote).WithCancellationTimeout(TimeSpan.FromMilliseconds(UDP_TIMEOUT));
}
catch (SocketException) { }
catch (OperationCanceledException) { }
finally { OnError(e); }
}
}
private async void HandleRequest(string sessionID, byte[] data)
{
DnsRequestMessage request = null;
try
{
request = DnsRequestMessage.FromArray(data);
OnEvent(OnRequested, new RequestedEventArgs(request, data));
IResponse response = await _coder.Code(request);
OnEvent(OnResponded, new RespondedEventArgs(request, response, data));
_udpServer.SendAsync(sessionID, response.ToArray());
}
catch (SocketException e) { OnError(e); }
catch (ArgumentException e) { OnError(e); }
catch (IndexOutOfRangeException e) { OnError(e); }
catch (OperationCanceledException e) { OnError(e); }
catch (IOException e) { OnError(e); }
catch (ObjectDisposedException e) { OnError(e); }
catch (ResponseException e)
{
IResponse response = e.Response;
if (response == null)
{
response = DnsResponseMessage.FromRequest(request);
}
try
{
_udpServer.SendAsync(sessionID, response.ToArray());
}
catch (SocketException) { }
catch (OperationCanceledException) { }
finally { OnError(e); }
}
}
/// <summary>
/// 通过数据转换
/// </summary>
/// <param name="message"></param>
/// <returns></returns>
public DnsClientRequest FromArray(byte[] message)
{
DnsRequestMessage request = DnsRequestMessage.FromArray(message);
return(new DnsClientRequest(_coder, request));
}
