private void _heartbeatTimer_Elapsed(object sender, ElapsedEventArgs e)
{
DataContent dataContent = new DataContent();
dataContent.Data = new byte[0]; // send empty message
NextLowLayerEvent?.Invoke(dataContent);
}
public void FromHighLayerToHere(DataContent dataContent)
{
SmallFileDataObject dataObject = (SmallFileDataObject)dataContent.Data;
// Convert an object to a byte array
dataContent.Data = Util.ObjectByteConverter.ObjectToByteArray(dataObject);
NextLowLayerEvent?.Invoke(dataContent);
}
// forwarding
public void FromHighLayerToHere(DataContent dataContent)
{
// server relay the message
if (dataContent.Data.GetType() == typeof(byte[]))
{
NextLowLayerEvent?.Invoke(dataContent);
}
// discard string message
}
public void FromHighLayerToHere(DataContent dataContent)
{
if (_state.Enabled && dataContent.Data != null)
{
byte[] encrypted = Encrypt((byte[])dataContent.Data);
dataContent.Data = encrypted;
}
NextLowLayerEvent?.Invoke(dataContent);
}
public void FromHighLayerToHere(DataContent dataContent)
{
List <byte> header_data = new List <byte>();
byte[] now = BitConverter.GetBytes(DateTime.Now.ToBinary());
header_data.AddRange(now);
header_data.AddRange((byte[])dataContent.Data);
dataContent.Data = header_data.ToArray();
NextLowLayerEvent?.Invoke(dataContent);
}
public void FromHighLayerToHere(DataContent dataContent)
{
byte[] typeHeader;
typeHeader = BitConverter.GetBytes((int)dataContent.Type);
List <byte> header_body = new List <byte>();
header_body.AddRange(typeHeader);
header_body.AddRange((byte[])dataContent.Data);
dataContent.Data = header_body.ToArray();
NextLowLayerEvent?.Invoke(dataContent);
}
public void FromHighLayerToHere(DataContent dataContent)
{
byte[] data = (byte[])dataContent.Data;
int length = data.Length;
byte[] lengthByte = BitConverter.GetBytes(length); // 4 Bytes
List<byte> prefix_data = new List<byte>();
prefix_data.AddRange(lengthByte);
prefix_data.AddRange(data);
dataContent.Data = prefix_data.ToArray();
NextLowLayerEvent?.Invoke(dataContent);
}
public void FromHighLayerToHere(DataContent dataContent)
{
byte[] seqHeader;
seqHeader = BitConverter.GetBytes(_thisSeq.Value);
List <byte> header_body = new List <byte>();
header_body.AddRange(seqHeader);
header_body.AddRange((byte[])dataContent.Data);
dataContent.Data = header_body.ToArray();
++_thisSeq;
NextLowLayerEvent?.Invoke(dataContent);
}
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 FromHighLayerToHere(DataContent dataContent)
{
NextLowLayerEvent?.Invoke(dataContent);
}
public void FromHighLayerToHere(DataContent dataContent)
{
byte[] data = Encoding.UTF8.GetBytes((string)dataContent.Data);
dataContent.Data = data;
NextLowLayerEvent?.Invoke(dataContent);
}
public void FromHighLayerToHere(DataContent dataContent)
{
_heartbeatTimer.Stop();
NextLowLayerEvent?.Invoke(dataContent);
_heartbeatTimer.Start();
}
private void OnNextLowLayerEvent(DataContent data)
{
NextLowLayerEvent?.Invoke(data);
}
private void Branch_NextLowLayerEvent(DataContent dataContent)
{
NextLowLayerEvent?.Invoke(dataContent);
}
private void OnNextLowLayerEvent_stackForClient(DataContent dataContent)
{
NextLowLayerEvent?.Invoke(dataContent);
}
