public void PacketReceived(EndPoint ep, UDPPacket pck, List <UInt32> acknumbers)
{
/* no need for returning packets here since we are obliqued never to pass them around.
* We just decode them here to actual messages
*/
MessageType mType = pck.ReadMessageType();
m_LastReceivedPacketAtTime = Environment.TickCount;
Interlocked.Increment(ref m_PacketsReceived);
/* do we have some acks from the packet's end? */
if (acknumbers != null)
{
int unackedReleasedCount = 0;
bool ackedObjects = false;
bool ackedSomethingElse = false;
foreach (UInt32 ackno in acknumbers)
{
UDPPacket p_acked = null;
lock (m_UnackedPacketsHash)
{
if (m_UnackedPacketsHash.Contains(ackno))
{
p_acked = m_UnackedPacketsHash[ackno];
m_UnackedPacketsHash.Remove(ackno);
}
}
if (p_acked != null)
{
unackedReleasedCount += p_acked.DataLength;
Interlocked.Decrement(ref m_AckThrottlingCount[(int)p_acked.OutQueue]);
if (p_acked.OutQueue == Message.QueueOutType.Object)
{
m_TxObjectPool.Enqueue(p_acked);
ackedObjects = true;
}
else
{
ackedSomethingElse = true;
}
if (p_acked.AckMessage != null)
{
try
{
p_acked.AckMessage.OnSendComplete(true);
}
catch (Exception e)
{
m_Log.WarnFormat("OnSendCompletion: Exception {0} at {1}", e.ToString(), e.StackTrace);
}
}
}
if (ackedSomethingElse)
{
m_TxQueue.Enqueue(new AcksReceived());
}
if (ackedObjects)
{
CheckForNewDataToSend();
}
lock (m_LogoutReplyLock)
{
if (ackno == m_LogoutReplySeqNo && m_LogoutReplySent)
{
LogMsgOnLogoutCompletion();
TerminateCircuit();
return;
}
}
}
lock (m_UnackedBytesLock)
{
m_UnackedBytes -= unackedReleasedCount;
}
}
if (pck.IsReliable)
{
/* we have to ack */
switch (mType)
{
case MessageType.CompleteAgentMovement:
/* Immediate ack */
SendCircuitPacket(UDPPacket.PacketAckImmediate(pck.SequenceNumber));
break;
default:
m_AckList.Enqueue(pck.SequenceNumber);
break;
}
}
/* we know the message type now, so we have to decode it when possible */
switch (mType)
{
case MessageType.PacketAck:
/* we decode it here, no need to pass it anywhere else */
int unackedReleasedCount = 0;
bool ackedObjects = false;
bool ackedSomethingElse = false;
uint cnt = pck.ReadUInt8();
for (uint i = 0; i < cnt; ++i)
{
uint ackno = pck.ReadUInt32();
UDPPacket p_acked = null;
lock (m_UnackedPacketsHash)
{
if (m_UnackedPacketsHash.Contains(ackno))
{
p_acked = m_UnackedPacketsHash[ackno];
m_UnackedPacketsHash.Remove(ackno);
}
}
if (p_acked != null)
{
unackedReleasedCount += p_acked.DataLength;
Interlocked.Decrement(ref m_AckThrottlingCount[(int)p_acked.OutQueue]);
if (p_acked.OutQueue == Message.QueueOutType.Object)
{
m_TxObjectPool.Enqueue(p_acked);
ackedObjects = true;
}
else
{
ackedSomethingElse = true;
}
if (p_acked.AckMessage != null)
{
try
{
p_acked.AckMessage.OnSendComplete(true);
}
catch (Exception e)
{
m_Log.WarnFormat("OnSendCompletion: Exception {0} at {1}", e.ToString(), e.StackTrace);
}
}
}
lock (m_LogoutReplyLock)
{
if (ackno == m_LogoutReplySeqNo && m_LogoutReplySent)
{
LogMsgOnLogoutCompletion();
TerminateCircuit();
return;
}
}
}
if (ackedSomethingElse)
{
m_TxQueue.Enqueue(new AcksReceived());
}
if (ackedObjects)
{
CheckForNewDataToSend();
}
lock (m_UnackedBytesLock)
{
m_UnackedBytes -= unackedReleasedCount;
}
break;
case MessageType.StartPingCheck:
byte pingID = pck.ReadUInt8();
pck.ReadUInt32();
var newpck = new UDPPacket();
newpck.WriteMessageNumber(MessageType.CompletePingCheck);
newpck.WriteUInt8(pingID);
SendCircuitPacket(newpck);
/* check for unacks */
try
{
foreach (uint keyval in m_UnackedPacketsHash.Keys)
{
UDPPacket Value;
lock (m_UnackedPacketsHash)
{
if (!m_UnackedPacketsHash.Contains(keyval))
{
continue;
}
Value = m_UnackedPacketsHash[keyval];
}
if (Environment.TickCount - Value.TransferredAtTime > 1000)
{
if (Value.ResentCount < 5)
{
Value.TransferredAtTime = Environment.TickCount;
Value.IsResent = true;
Server.SendPacketTo(Value, RemoteEndPoint);
}
++Value.ResentCount;
}
}
}
catch
{
/* no action required */
}
break;
case MessageType.CompletePingCheck:
byte ackPingID = pck.ReadUInt8();
long timesent;
if (m_PingSendTicks.Remove(ackPingID, out timesent))
{
LastMeasuredLatencyMsecs = (int)PingTimeSource.TicksToMsecs(PingTimeSource.TicksElapsed(PingTimeSource.TickCount, timesent)) / 2;
}
break;
default:
bool isnewpacket = true;
if (pck.IsReliable)
{
lock (m_ResentAge)
{
uint seqNo = pck.SequenceNumber;
isnewpacket = !m_ResentDetectSet.Contains(seqNo) || !pck.IsResent;
if (isnewpacket)
{
m_ResentAge.Add(new ResendAge {
SeqNo = seqNo, TickCount = Environment.TickCount
});
m_ResentDetectSet.Add(seqNo);
}
}
}
if (isnewpacket)
{
OnCircuitSpecificPacketReceived(mType, pck);
}
break;
}
lock (m_ResentAge)
{
if (m_ResentAge.Count > 0)
{
ResendAge age = m_ResentAge[0];
int actAge = Environment.TickCount - age.TickCount;
if (actAge > 30000)
{
m_ResentDetectSet.Remove(age.SeqNo);
m_ResentAge.RemoveAt(0);
}
}
}
}
public void C5_TreeSet() => c5_treeset.Contains(Search);