public bool EnqueueOutgoing(OutgoingPacket packet)
{
int category = (int)packet.Category;
if (category >= 0 && category < m_packetOutboxes.Length)
{
OpenSim.Framework.LocklessQueue<OutgoingPacket> queue = m_packetOutboxes[category];
// Not enough tokens in the bucket, queue this packet
//check the queue
//Dont drop resends this can mess up the buffer pool as well as make the connection situation much worse
if (_currentOutboundQueueSize > MAX_TOTAL_QUEUE_SIZE && (packet.Buffer[0] & Helpers.MSG_RESENT) == 0)
{
//queue already has too much data in it..
//can we drop this packet?
byte flags = packet.Buffer[0];
bool isReliable = (flags & Helpers.MSG_RELIABLE) != 0;
if (!isReliable
&& packet.Type != PacketType.PacketAck
&& packet.Type != PacketType.CompletePingCheck)
{
//packet is unreliable and will be dropped
this.TestReportPacketDrop(packet);
packet.DecRef(m_udpServer.ByteBufferPool);
}
else
{
if (_currentOutboundQueueSize < MAX_TOTAL_QUEUE_SIZE * 1.5)
{
this.TestReportPacketShouldDrop(packet);
Interlocked.Add(ref _currentOutboundQueueSize, packet.DataSize);
packet.AddRef();
queue.Enqueue(packet);
}
else
{
//this connection is in a pretty critical state and probably will never catch up.
//drop all packets until we start to catch up. This includes acks which will disconnect
//the client eventually anyways
this.TestReportCriticalPacketDrop(packet);
packet.DecRef(m_udpServer.ByteBufferPool);
}
}
}
else
{
Interlocked.Add(ref _currentOutboundQueueSize, packet.DataSize);
packet.AddRef();
queue.Enqueue(packet);
}
return true;
}
else
{
// We don't have a token bucket for this category, so it will not be queued
return false;
}
}
public bool EnqueueOutgoing(OutgoingPacket packet)
{
int category = (int)packet.Category;
if (category >= 0 && category < m_packetOutboxes.Length)
{
OpenSim.Framework.LocklessQueue <OutgoingPacket> queue = m_packetOutboxes[category];
// Not enough tokens in the bucket, queue this packet
//check the queue
//Dont drop resends this can mess up the buffer pool as well as make the connection situation much worse
if (_currentOutboundQueueSize > MAX_TOTAL_QUEUE_SIZE && (packet.Buffer[0] & Helpers.MSG_RESENT) == 0)
{
//queue already has too much data in it..
//can we drop this packet?
byte flags = packet.Buffer[0];
bool isReliable = (flags & Helpers.MSG_RELIABLE) != 0;
if (!isReliable &&
packet.Type != PacketType.PacketAck &&
packet.Type != PacketType.CompletePingCheck)
{
//packet is unreliable and will be dropped
this.TestReportPacketDrop(packet);
packet.DecRef(m_udpServer.ByteBufferPool);
}
else
{
if (_currentOutboundQueueSize < MAX_TOTAL_QUEUE_SIZE * 1.5)
{
this.TestReportPacketShouldDrop(packet);
Interlocked.Add(ref _currentOutboundQueueSize, packet.DataSize);
packet.AddRef();
queue.Enqueue(packet);
}
else
{
//this connection is in a pretty critical state and probably will never catch up.
//drop all packets until we start to catch up. This includes acks which will disconnect
//the client eventually anyways
this.TestReportCriticalPacketDrop(packet);
packet.DecRef(m_udpServer.ByteBufferPool);
}
}
}
else
{
Interlocked.Add(ref _currentOutboundQueueSize, packet.DataSize);
packet.AddRef();
queue.Enqueue(packet);
}
return(true);
}
else
{
// We don't have a token bucket for this category, so it will not be queued
return(false);
}
}
/// <summary>
/// Loops through all of the packet queues for this client and tries to send
/// any outgoing packets, obeying the throttling bucket limits
/// </summary>
/// <remarks>This function is only called from a synchronous loop in the
/// UDPServer so we don't need to bother making this thread safe</remarks>
/// <returns>True if any packets were sent, otherwise false</returns>
public bool DequeueOutgoing()
{
OutgoingPacket packet;
OpenSim.Framework.LocklessQueue <OutgoingPacket> queue;
TokenBucket bucket;
bool packetSent = false;
ThrottleOutPacketTypeFlags emptyCategories = 0;
//string queueDebugOutput = String.Empty; // Serious debug business
int randStart = _rand.Next(7);
for (int j = 0; j < THROTTLE_CATEGORY_COUNT; j++)
{
int i = (j + randStart) % THROTTLE_CATEGORY_COUNT;
bucket = m_throttleCategories[i];
//queueDebugOutput += m_packetOutboxes[i].Count + " "; // Serious debug business
if (m_nextPackets[i] != null)
{
// This bucket was empty the last time we tried to send a packet,
// leaving a dequeued packet still waiting to be sent out. Try to
// send it again
OutgoingPacket nextPacket = m_nextPackets[i];
if (bucket.RemoveTokens(nextPacket.DataSize))
{
// Send the packet
Interlocked.Add(ref _currentOutboundQueueSize, -nextPacket.DataSize);
m_udpServer.SendPacketFinal(nextPacket);
nextPacket.DecRef(m_udpServer.ByteBufferPool);
m_nextPackets[i] = null;
packetSent = true;
this.PacketsSent++;
}
}
else
{
// No dequeued packet waiting to be sent, try to pull one off
// this queue
queue = m_packetOutboxes[i];
if (queue.Dequeue(out packet))
{
// A packet was pulled off the queue. See if we have
// enough tokens in the bucket to send it out
if (bucket.RemoveTokens(packet.DataSize))
{
// Send the packet
Interlocked.Add(ref _currentOutboundQueueSize, -packet.DataSize);
m_udpServer.SendPacketFinal(packet);
packet.DecRef(m_udpServer.ByteBufferPool);
packetSent = true;
this.PacketsSent++;
}
else
{
// Save the dequeued packet for the next iteration
m_nextPackets[i] = packet;
_emptyBucketHints.Add(i);
}
// If the queue is empty after this dequeue, fire the queue
// empty callback now so it has a chance to fill before we
// get back here
if (queue.Count == 0)
{
emptyCategories |= CategoryToFlag(i);
}
}
else
{
// No packets in this queue. Fire the queue empty callback
// if it has not been called recently
emptyCategories |= CategoryToFlag(i);
}
}
}
if (emptyCategories != 0)
{
BeginFireQueueEmpty(emptyCategories);
}
//m_log.Info("[LLUDPCLIENT]: Queues: " + queueDebugOutput); // Serious debug business
return(packetSent);
}
protected override void SendCompleted(OutgoingPacket packet)
{
packet.DecRef(_bufferPool);
}