public async Task <IResponse> WriteAsync(Stream stream, bool returnResponse = false, bool flush = true, CancellationToken token = default(CancellationToken))
{
if (returnResponse)
{
//subscribe to IObserveable
PacketRouter router = new PacketRouter();
Subscribe(router);
//write the packet to the stream
//await base.WriteAsync(stream, flush, token);
await WriteAsync(stream, flush, token);
var ts = TimeSpan.FromSeconds(Timeout);
//wait for the response
_isResponseReceived = new ValueWatcher <bool>(GetResponseReceivedValue, IsValueAcceptable);
await Task.Run(() => _isResponseReceived.Wait(ts), token);
//Unsubscribe when the correct type of packet has been received or it has timed out
Unsubscribe();
}
else
{
//we dont need the return packet so we will just write to the stream and exit
//await base.WriteAsync(stream, flush, token);
await WriteAsync(stream, flush, token);
}
//return the response packet
return(ResponseData);
}
internal static async void PacketReceived(Packet packet, Stream stream)
{
//Handle Direct return messages : it is possible this should be placed in the packet class!
if (packet.Header == PacketHeaderType.CommandStationOperationResponse && packet.Payload[0] == Convert.ToByte(PacketIdentifier.CommandStationOperationResponse.TransferErrors))
{
var ackResp = new AckRespMessage();
//if (XpressNetConstants.UseAsyncWrite)
//{
// //ackResp.WriteAsync(stream);
//}
//else
//{
await ackResp.WriteAsync(stream);
//}
}
//Handle Broadcast Messages
if (packet.Header == PacketHeaderType.EmergencyStopAll)
{
var bmr = new BroadcastMessageReceivedEventArgs
{
ResponseType = BroadcastType.EmergencyStop,
ReceivedTime = DateTime.Now
};
OnBroadcastMessageReceived(bmr);
}
else if (packet.Header == PacketHeaderType.CommandStationOperationResponse && packet.Payload[0] == Convert.ToByte(PacketIdentifier.CommandStationOperationResponse.NormalOperationsResumedBroadcast))
{
var bmr = new BroadcastMessageReceivedEventArgs
{
ResponseType = BroadcastType.NormalOperationResumed,
ReceivedTime = DateTime.Now
};
OnBroadcastMessageReceived(bmr);
}
else if (packet.Header == PacketHeaderType.CommandStationOperationResponse && packet.Payload[0] == Convert.ToByte(PacketIdentifier.CommandStationOperationResponse.TrackPowerOffBroadcast))
{
var bmr = new BroadcastMessageReceivedEventArgs
{
ResponseType = BroadcastType.TrackPowerOff,
ReceivedTime = DateTime.Now
};
OnBroadcastMessageReceived(bmr);
}
else if (packet.Header == PacketHeaderType.CommandStationOperationResponse && packet.Payload[0] == Convert.ToByte(PacketIdentifier.CommandStationOperationResponse.ServiceModeEntryBroadcast))
{
var bmr = new BroadcastMessageReceivedEventArgs
{
ResponseType = BroadcastType.ServiceModeEntry,
ReceivedTime = DateTime.Now
};
OnBroadcastMessageReceived(bmr);
}
else if (packet.Header == PacketHeaderType.AccessoryDecoderInformation)
{
var bmr = new BroadcastMessageReceivedEventArgs
{
ResponseType = BroadcastType.AccessoryFeedback,
ReceivedTime = DateTime.Now
};
OnBroadcastMessageReceived(bmr);
}
var pump = new PacketRouter();
pump.DisseminatePacket(packet);
}