public void FromLowLayerToHere(DataContent dataContent)
{
TransportState state = dataContent.TransportState;
// not receiving enough (this is receiver)
if (dataContent.Data == null)
{
// reset
if (state.PendingLength == 0)
{
_prevReceivedLength = state.ReceivedLength;
_prevTime = DateTime.Now;
_prevSpeed = 0;
return;
}
// count speed
if (DateTime.Now == _prevTime)
{
state.Speed = double.MaxValue;
}
else
{
state.Speed = (1 - alpha) * _prevSpeed + alpha * (state.ReceivedLength - _prevReceivedLength) / 1024 / (DateTime.Now - _prevTime).TotalSeconds;
}
// update
_prevSpeed = state.Speed;
_prevReceivedLength = state.ReceivedLength;
_prevTime = DateTime.Now;
// write state in dataContent
Byte[] data = Util.ObjectByteConverter.ObjectToByteArray(state);
dataContent.Data = data;
// tell peer about the transport process
NextLowLayerEvent?.Invoke((DataContent)dataContent.Clone());
}
// still sending (this is sender)
else
{
// get tranport process info from receiver
dataContent.TransportState = (TransportState)Util.ObjectByteConverter.ByteArrayToObject((byte[])dataContent.Data);
}
// tell this app
NextHighLayerEvent?.Invoke(dataContent);
}
public void FromLowLayerToHere(DataContent dataContent)
{
_bufferMgr.AddBytes((byte[])dataContent.Data, ((byte[])dataContent.Data).Length);
dataContent.Data = null;
byte[] data = _bufferMgr.GetAdequateBytes();
while (data.Length > 0)
{
DataContent newDataContent = (DataContent)dataContent.Clone();
newDataContent.Data = data;
NextHighLayerEvent?.Invoke(newDataContent);
data = _bufferMgr.GetAdequateBytes();
}
dataContent.TransportState.PendingLength = _bufferMgr.GetPendingLength();
dataContent.TransportState.ReceivedLength = _bufferMgr.GetReceivedLength();
NextHighLayerEvent?.Invoke(dataContent);
}