internal void OnSend(int packetId, long sequence, int payloadLength)
{
FlightSize += payloadLength + RUDPStack.RUDPHeaderLength + RUDPStack.UDPHeaderLength;
//---- Update window (if needed)
OnSend_UpdateWindow(payloadLength);
//---- Sliding
try
{
SWSlot slot;
_sendSlotsLock.EnterWriteLock();
//---- First slot
if (_sendSlots.Count < 1)
{
slot = new SWSlot(packetId, -1, sequence, sequence + payloadLength);
_sendSlots.Add(slot);
return;
}
//---- Check the last slot only, because ordered
slot = _sendSlots[_sendSlots.Count - 1];
// Grow the slot
if ((slot.EndPacketId < 0 && slot.StartPacketId == packetId - 1) ||
(slot.EndPacketId > -1 && slot.EndPacketId == packetId - 1))
{
slot.EndPacketId = packetId;
slot.EndByte += payloadLength;
return;
}
// New slot
slot = new SWSlot(packetId, -1, sequence, sequence + payloadLength);
_sendSlots.Add(slot);
}
finally
{
_sendSlotsLock.ExitWriteLock();
// Lock
if (!CanSend(payloadLength))
{
PauseTransmission();
}
}
}
internal void OnACK(RUDPOutgoingPacket packet, double currentRTT)
{
// Duplicated ACK
if (packet == null)
return;
FlightSize -= packet.Payload.Length + RUDPStack.UDPHeaderLength;
//---- Congestion
lock (this)
{
OnACK_UpdateParameters(packet, currentRTT);
OnACK_UpdateWindow(packet);
}
//---- Sliding
int packetId = packet.PacketId;
_sendSlotsLock.EnterWriteLock();
SWSlot slot = null;
try
{
for (int index = 0; index < _sendSlots.Count; index++)
{
slot = _sendSlots[index];
// Delete this slot
if (slot.EndPacketId < 0 && slot.StartPacketId == packetId)
{
_sendSlots.RemoveAt(index);
return;
}
// Decrease the slot
if (slot.EndPacketId > -1 && slot.StartPacketId == packetId)
{
slot.StartPacketId++;
slot.StartByte += packet.Payload.Length;
if (slot.StartPacketId == slot.EndPacketId)
slot.EndPacketId = -1;
return;
}
// Decrease the slot
if (slot.EndPacketId > -1 && slot.EndPacketId == packetId)
{
slot.EndPacketId--;
slot.EndByte -= packet.Payload.Length;
if (slot.StartPacketId == slot.EndPacketId)
slot.EndPacketId = -1;
return;
}
// Split the slot
if (slot.EndPacketId > -1 && slot.StartPacketId <= packetId && slot.EndPacketId >= packetId)
{
// Right slot
SWSlot newSlot = new SWSlot(packetId + 1,
slot.EndPacketId,
packet.Sequence + packet.Payload.Length + 1,
slot.EndByte);
if (newSlot.StartPacketId == newSlot.EndPacketId)
newSlot.EndPacketId = -1;
_sendSlots.Insert(index + 1, newSlot);
// Left slot
slot.EndPacketId = packetId - 1;
slot.EndByte = packet.Sequence - 1;
if (slot.StartPacketId == slot.EndPacketId)
slot.EndPacketId = -1;
return;
}
}
}
finally
{
_sendSlotsLock.ExitWriteLock();
ResumeTransmission();
}
}
internal void OnSend(int packetId, long sequence, int payloadLength)
{
FlightSize += payloadLength + RUDPStack.RUDPHeaderLength + RUDPStack.UDPHeaderLength;
//---- Update window (if needed)
OnSend_UpdateWindow(payloadLength);
//---- Sliding
try
{
SWSlot slot;
_sendSlotsLock.EnterWriteLock();
//---- First slot
if (_sendSlots.Count < 1)
{
slot = new SWSlot(packetId, -1, sequence, sequence + payloadLength);
_sendSlots.Add(slot);
return;
}
//---- Check the last slot only, because ordered
slot = _sendSlots[_sendSlots.Count - 1];
// Grow the slot
if ((slot.EndPacketId < 0 && slot.StartPacketId == packetId - 1) ||
(slot.EndPacketId > -1 && slot.EndPacketId == packetId - 1))
{
slot.EndPacketId = packetId;
slot.EndByte += payloadLength;
return;
}
// New slot
slot = new SWSlot(packetId, -1, sequence, sequence + payloadLength);
_sendSlots.Add(slot);
}
finally
{
_sendSlotsLock.ExitWriteLock();
// Lock
if (!CanSend(payloadLength))
PauseTransmission();
}
}
internal void OnACK(RUDPOutgoingPacket packet, double currentRTT)
{
// Duplicated ACK
if (packet == null)
{
return;
}
FlightSize -= packet.Payload.Length + RUDPStack.UDPHeaderLength;
//---- Congestion
lock (this)
{
OnACK_UpdateParameters(packet, currentRTT);
OnACK_UpdateWindow(packet);
}
//---- Sliding
int packetId = packet.PacketId;
_sendSlotsLock.EnterWriteLock();
SWSlot slot = null;
try
{
for (int index = 0; index < _sendSlots.Count; index++)
{
slot = _sendSlots[index];
// Delete this slot
if (slot.EndPacketId < 0 && slot.StartPacketId == packetId)
{
_sendSlots.RemoveAt(index);
return;
}
// Decrease the slot
if (slot.EndPacketId > -1 && slot.StartPacketId == packetId)
{
slot.StartPacketId++;
slot.StartByte += packet.Payload.Length;
if (slot.StartPacketId == slot.EndPacketId)
{
slot.EndPacketId = -1;
}
return;
}
// Decrease the slot
if (slot.EndPacketId > -1 && slot.EndPacketId == packetId)
{
slot.EndPacketId--;
slot.EndByte -= packet.Payload.Length;
if (slot.StartPacketId == slot.EndPacketId)
{
slot.EndPacketId = -1;
}
return;
}
// Split the slot
if (slot.EndPacketId > -1 && slot.StartPacketId <= packetId && slot.EndPacketId >= packetId)
{
// Right slot
SWSlot newSlot = new SWSlot(packetId + 1,
slot.EndPacketId,
packet.Sequence + packet.Payload.Length + 1,
slot.EndByte);
if (newSlot.StartPacketId == newSlot.EndPacketId)
{
newSlot.EndPacketId = -1;
}
_sendSlots.Insert(index + 1, newSlot);
// Left slot
slot.EndPacketId = packetId - 1;
slot.EndByte = packet.Sequence - 1;
if (slot.StartPacketId == slot.EndPacketId)
{
slot.EndPacketId = -1;
}
return;
}
}
}
finally
{
_sendSlotsLock.ExitWriteLock();
ResumeTransmission();
}
}
