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streamlining m_NeedAck logic

0.6.6-post-fixes
Dr Scofield 2009-06-25 08:00:43 +00:00
parent 9f83f124c7
commit 1b06da0c54
1 changed files with 29 additions and 31 deletions
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60
OpenSim/Region/ClientStack/LindenUDP/LLPacketHandler.cs
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@ -276,46 +276,44 @@ namespace OpenSim.Region.ClientStack.LindenUDP
lock (m_NeedAck)
{
if (m_DropSafeTimeout > now ||
intervalMs > 500) // We were frozen!
intervalMs > 500) // We were frozen!
{
foreach (LLQueItem data in new List<LLQueItem>
(m_NeedAck.Values))
foreach (LLQueItem data in m_NeedAck.Values)
{
if (m_DropSafeTimeout > now)
{
m_NeedAck[data.Packet.Header.Sequence].
TickCount = now;
m_NeedAck[data.Packet.Header.Sequence].TickCount = now;
}
else
{
m_NeedAck[data.Packet.Header.Sequence].
TickCount += intervalMs;
m_NeedAck[data.Packet.Header.Sequence].TickCount += intervalMs;
}
}
}
}
m_LastResend = now;
// Unless we have received at least one ack, don't bother resending
// anything. There may not be a client there, don't clog up the
// pipes.
//
lock (m_NeedAck)
{
m_LastResend = now;
// Unless we have received at least one ack, don't bother resending
// anything. There may not be a client there, don't clog up the
// pipes.
// Nothing to do
//
if (m_NeedAck.Count == 0)
return;
int resent = 0;
long dueDate = now - m_ResendTimeout;
foreach (LLQueItem data in new List<LLQueItem>(m_NeedAck.Values))
List<LLQueItem> dropped = new List<LLQueItem>();
foreach (LLQueItem data in m_NeedAck.Values)
{
Packet packet = data.Packet;
// Packets this old get resent
//
if ((now - data.TickCount) > m_ResendTimeout && data.Sequence != 0 && !m_PacketQueue.Contains(data.Sequence))
if (data.TickCount < dueDate && data.Sequence != 0 && !m_PacketQueue.Contains(data.Sequence))
{
if (resent < 20) // Was 20 (= Max 117kbit/sec resends)
{
@ -325,31 +323,31 @@ namespace OpenSim.Region.ClientStack.LindenUDP
// that it should reset its sequence to that packet number.
packet.Header.Resent = true;
if ((m_NeedAck[packet.Header.Sequence].Resends >=
m_MaxReliableResends) && (!m_ReliableIsImportant))
if ((m_NeedAck[packet.Header.Sequence].Resends >= m_MaxReliableResends) &&
(!m_ReliableIsImportant))
{
m_NeedAck.Remove(packet.Header.Sequence);
TriggerOnPacketDrop(packet, data.Identifier);
m_PacketQueue.Cancel(packet.Header.Sequence);
PacketPool.Instance.ReturnPacket(packet);
dropped.Add(data);
continue;
}
m_NeedAck[packet.Header.Sequence].TickCount =
Environment.TickCount;
QueuePacket(packet, ThrottleOutPacketType.Resend,
data.Identifier);
m_NeedAck[packet.Header.Sequence].TickCount = Environment.TickCount;
QueuePacket(packet, ThrottleOutPacketType.Resend, data.Identifier);
resent++;
}
else
{
m_NeedAck[packet.Header.Sequence].TickCount +=
intervalMs;
m_NeedAck[packet.Header.Sequence].TickCount += intervalMs;
}
}
}
foreach(LLQueItem data in dropped)
{
m_NeedAck.Remove(data.Packet.Header.Sequence);
TriggerOnPacketDrop(data.Packet, data.Identifier);
m_PacketQueue.Cancel(data.Packet.Header.Sequence);
PacketPool.Instance.ReturnPacket(data.Packet);
}
}
}