protected virtual void Dispose(bool disposing)
{
if (mOutboundBuffer != null)
{
mOutboundBuffer.Clear();
mOutboundBuffer = null;
}
if (mInboundBuffer != null)
{
mInboundBuffer.Clear();
mInboundBuffer = null;
}
if (mOutboundStream != null)
{
mOutboundStream.Dispose();
mOutboundStream = null;
}
if (mInboundStream != null)
{
mInboundStream.Dispose();
mInboundStream = null;
}
}
internal bool BufferTCPPacket(TcpPacket pTCPPacket, bool pInbound)
{
if (pTCPPacket.Syn && pTCPPacket.Ack)
{
mInboundSequence = (uint)(pTCPPacket.SequenceNumber + 1);
return true;
}
if (pTCPPacket.PayloadData.Length == 0) return true;
if (_mapleVersion == 0)
{
if (pTCPPacket.PayloadData.Length < 13) return false;
byte[] tcpData = pTCPPacket.PayloadData;
MaplePacket pr = new MaplePacket(tcpData);
pr.ReadShort();
_mapleVersion = pr.ReadUShort();
var pos = pr.Position;
{
var shrt = pr.ReadShort();
if (shrt < 0 || shrt > 0x0020)
{
return false;
}
}
pr.Reset(pos);
_maplePatchLocation = pr.ReadString();
byte[] localIV = pr.ReadBytes(4);
byte[] remoteIV = pr.ReadBytes(4);
_mapleLocale = pr.ReadByte();
if (pr.Length > pr.Position || _mapleLocale > 0x12)
{
return false;
}
pr.Dispose();
pr = null;
mOutboundStream = new PacketStream(localIV, _mapleLocale, _mapleVersion, !pInbound);
mInboundStream = new PacketStream(remoteIV, _mapleLocale, (ushort)(0xFFFF - _mapleVersion), pInbound);
mInboundSequence += (uint)tcpData.Length;
}
if (!pInbound) ProcessTCPPacket(pTCPPacket, ref mOutboundSequence, mOutboundBuffer, mOutboundStream, pInbound);
else ProcessTCPPacket(pTCPPacket, ref mInboundSequence, mInboundBuffer, mInboundStream, pInbound);
return true;
}
private void CheckForPackets(PacketStream pStream, bool pInbound)
{
while (true)
{
MaplePacket packet = pStream.Read();
if (packet == null)
break;
if (pInbound)
{
Program.RECV_DATA += packet.Length;
Program.RECV_PACKETS++;
}
else
{
Program.SENT_DATA += packet.Length;
Program.SENT_PACKETS++;
}
MasterThread.Instance.AddCallback((a) =>
{
ServerConnection.Instance.ForwardPacket(pInbound ? MaplePacket.CommunicationType.ServerPacket : MaplePacket.CommunicationType.ClientPacket, packet);
packet.Dispose();
packet = null;
});
}
}
private void ProcessTCPPacket(TcpPacket pTCPPacket, ref uint pSequence, Dictionary<uint, byte[]> pBuffer, PacketStream pStream, bool pInbound)
{
if (pTCPPacket.SequenceNumber > pSequence)
{
byte[] data;
while ((data = pBuffer.GetOrDefault(pSequence, null)) != null)
{
pBuffer.Remove(pSequence);
pStream.Append(data);
pSequence += (uint)data.Length;
}
if (pTCPPacket.SequenceNumber > pSequence)
{
pBuffer[(uint)pTCPPacket.SequenceNumber] = pTCPPacket.PayloadData;
}
}
if (pTCPPacket.SequenceNumber < pSequence)
{
int difference = (int)(pSequence - pTCPPacket.SequenceNumber);
if (difference > 0)
{
byte[] data = pTCPPacket.PayloadData;
if (data.Length > difference)
{
pStream.Append(data, difference, data.Length - difference);
pSequence += (uint)(data.Length - difference);
}
}
}
else if (pTCPPacket.SequenceNumber == pSequence)
{
byte[] data = pTCPPacket.PayloadData;
pStream.Append(data);
pSequence += (uint)data.Length;
}
CheckForPackets(pStream, pInbound);
}
