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0.9.1.0-post-fixes
UbitUmarov 2018-12-29 23:03:03 +00:00
parent b156378819
commit cf89799c0b
1 changed files with 57 additions and 36 deletions
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91
OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
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@ -855,12 +855,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
LLUDPClient udpClient, Packet packet, ThrottleOutPacketType category, bool allowSplitting, UnackedPacketMethod method)
{
// CoarseLocationUpdate packets cannot be split in an automated way
if (allowSplitting && packet.Type == PacketType.CoarseLocationUpdate)
allowSplitting = false;
// bool packetQueued = false;
if (allowSplitting && packet.HasVariableBlocks)
if (allowSplitting && packet.HasVariableBlocks && packet.Type != PacketType.CoarseLocationUpdate)
{
byte[][] datas = packet.ToBytesMultiple();
int packetCount = datas.Length;
@ -887,6 +882,46 @@ namespace OpenSim.Region.ClientStack.LindenUDP
PacketPool.Instance.ReturnPacket(packet);
}
public static int ZeroEncode(byte[] src, int srclen, byte[] dest)
{
Buffer.BlockCopy(src, 0, dest, 0, 6);
int zerolen = 6;
byte zerocount = 0;
for (int i = zerolen; i < srclen; i++)
{
if (src[i] == 0x00)
{
zerocount++;
if (zerocount == 0)
{
dest[zerolen++] = 0x00;
dest[zerolen++] = 0xff;
zerocount++;
}
}
else
{
if (zerocount != 0)
{
dest[zerolen++] = 0x00;
dest[zerolen++] = (byte)zerocount;
zerocount = 0;
}
dest[zerolen++] = src[i];
}
}
if (zerocount != 0)
{
dest[zerolen++] = 0x00;
dest[zerolen++] = (byte)zerocount;
}
return (int)zerolen;
}
/// <summary>
/// Start the process of sending a packet to the client.
/// </summary>
@ -919,9 +954,15 @@ namespace OpenSim.Region.ClientStack.LindenUDP
{
try
{
dataLength = Helpers.ZeroEncode(data, dataLength, buffer.Data);
int testlen = ZeroEncode(data, dataLength, buffer.Data);
if(testlen <= dataLength)
{
dataLength = testlen;
doCopy = false;
}
else
data[0] = (byte)(data[0] & ~Helpers.MSG_ZEROCODED);
}
catch (IndexOutOfRangeException)
{
// The packet grew larger than the bufferSize while zerocoding.
@ -942,15 +983,13 @@ namespace OpenSim.Region.ClientStack.LindenUDP
}
else
{
bufferSize = dataLength;
buffer = new UDPPacketBuffer(udpClient.RemoteEndPoint, bufferSize);
m_log.Error("[LLUDPSERVER]: Packet exceeded buffer size! This could be an indication of packet assembly not obeying the MTU. Type=" +
type + ", DataLength=" + dataLength + ", BufferLength=" + buffer.Data.Length);
buffer = new UDPPacketBuffer(udpClient.RemoteEndPoint, dataLength);
Buffer.BlockCopy(data, 0, buffer.Data, 0, dataLength);
}
}
data = null;
buffer.DataLength = dataLength;
#region Queue or Send
@ -972,7 +1011,6 @@ namespace OpenSim.Region.ClientStack.LindenUDP
// If a Linden Lab 1.23.5 client receives an update packet after a kill packet for an object, it will
// continue to display the deleted object until relog. Therefore, we need to always queue a kill object
// packet so that it isn't sent before a queued update packet.
bool requestQueue = type == PacketType.KillObject;
if (!outgoingPacket.Client.EnqueueOutgoing(outgoingPacket, requestQueue, highPriority))
{
@ -1113,8 +1151,6 @@ namespace OpenSim.Region.ClientStack.LindenUDP
if (!udpClient.IsConnected)
return;
#region ACK Appending
int dataLength = buffer.DataLength;
// NOTE: I'm seeing problems with some viewers when ACKs are appended to zerocoded packets so I've disabled that here
@ -1122,9 +1158,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
{
// Keep appending ACKs until there is no room left in the buffer or there are
// no more ACKs to append
uint ackCount = 0;
int ackCount = 0;
uint ack;
while (dataLength + 5 < buffer.Data.Length && udpClient.PendingAcks.Dequeue(out ack))
while (dataLength + 5 < buffer.Data.Length && ackCount < 256 && udpClient.PendingAcks.Dequeue(out ack))
{
Utils.UIntToBytesBig(ack, buffer.Data, dataLength);
dataLength += 4;
@ -1142,10 +1178,6 @@ namespace OpenSim.Region.ClientStack.LindenUDP
buffer.DataLength = dataLength;
#endregion ACK Appending
#region Sequence Number Assignment
if (!isResend)
{
// Not a resend, assign a new sequence number
@ -1162,32 +1194,21 @@ namespace OpenSim.Region.ClientStack.LindenUDP
else
{
Interlocked.Increment(ref udpClient.PacketsResent);
// We're not going to worry about interlock yet since its not currently critical that this total count
// is 100% correct
PacketsResentCount++;
}
#endregion Sequence Number Assignment
// Stats tracking
Interlocked.Increment(ref udpClient.PacketsSent);
// We're not going to worry about interlock yet since its not currently critical that this total count
// is 100% correct
PacketsSentCount++;
SyncSend(buffer);
// Keep track of when this packet was sent out (right now)
outgoingPacket.TickCount = Environment.TickCount & Int32.MaxValue;
if (udpClient.DebugDataOutLevel > 0)
m_log.DebugFormat(
"[LLUDPSERVER]: Sending packet #{0} (rel: {1}, res: {2}) to {3} from {4}",
outgoingPacket.SequenceNumber, isReliable, isResend, udpClient.AgentID, Scene.Name);
// Put the UDP payload on the wire
// AsyncBeginSend(buffer);
SyncSend(buffer);
// Keep track of when this packet was sent out (right now)
outgoingPacket.TickCount = Environment.TickCount & Int32.MaxValue;
}
protected void RecordMalformedInboundPacket(IPEndPoint endPoint)