public static void ProcessPacket(string source, byte[] data, IPEndPoint ep, UdpClient listener, uint serverPID, ushort listenPort, bool removeConnectPayload = false)
{
StringBuilder sb = new StringBuilder();
foreach (byte b in data)
{
sb.Append(b.ToString("X2") + " ");
}
while (true)
{
QPacket p = new QPacket(data);
MemoryStream m = new MemoryStream(data);
byte[] buff = new byte[(int)p.realSize];
m.Seek(0, 0);
m.Read(buff, 0, buff.Length);
Log.LogPacket(false, buff);
Log.WriteLine(5, "[" + source + "] received : " + p.ToStringShort());
Log.WriteLine(10, "[" + source + "] received : " + sb.ToString());
Log.WriteLine(10, "[" + source + "] received : " + p.ToStringDetailed());
QPacket reply = null;
ClientInfo client = null;
if (p.type != QPacket.PACKETTYPE.SYN && p.type != QPacket.PACKETTYPE.NATPING)
{
client = Global.GetClientByIDrecv(p.m_uiSignature);
}
switch (p.type)
{
case QPacket.PACKETTYPE.SYN:
reply = QPacketHandler.ProcessSYN(p, ep, out client);
break;
case QPacket.PACKETTYPE.CONNECT:
if (client != null && !p.flags.Contains(QPacket.PACKETFLAG.FLAG_ACK))
{
client.sPID = serverPID;
client.sPort = listenPort;
if (removeConnectPayload)
{
p.payload = new byte[0];
p.payloadSize = 0;
}
reply = QPacketHandler.ProcessCONNECT(client, p);
}
break;
case QPacket.PACKETTYPE.DATA:
if (p.m_oSourceVPort.type == QPacket.STREAMTYPE.OldRVSec)
{
RMC.HandlePacket(listener, p);
}
if (p.m_oSourceVPort.type == QPacket.STREAMTYPE.DO)
{
DO.HandlePacket(listener, p);
}
break;
case QPacket.PACKETTYPE.DISCONNECT:
if (client != null)
{
reply = QPacketHandler.ProcessDISCONNECT(client, p);
}
break;
case QPacket.PACKETTYPE.PING:
if (client != null)
{
reply = QPacketHandler.ProcessPING(client, p);
}
break;
case QPacket.PACKETTYPE.NATPING:
ulong time = BitConverter.ToUInt64(p.payload, 5);
if (timeToIgnore.Contains(time))
{
timeToIgnore.Remove(time);
}
else
{
reply = p;
m = new MemoryStream();
byte b = (byte)(reply.payload[0] == 1 ? 0 : 1);
m.WriteByte(b);
Helper.WriteU32(m, 166202); //RVCID
Helper.WriteU64(m, time);
reply.payload = m.ToArray();
Send(source, reply, ep, listener);
m = new MemoryStream();
b = (byte)(b == 1 ? 0 : 1);
m.WriteByte(b);
Helper.WriteU32(m, 166202); //RVCID
time = Helper.MakeTimestamp();
timeToIgnore.Add(time);
Helper.WriteU64(m, Helper.MakeTimestamp());
reply.payload = m.ToArray();
}
break;
}
if (reply != null)
{
Send(source, reply, ep, listener);
}
if (p.realSize != data.Length)
{
m = new MemoryStream(data);
int left = (int)(data.Length - p.realSize);
byte[] newData = new byte[left];
m.Seek(p.realSize, 0);
m.Read(newData, 0, left);
data = newData;
}
else
{
break;
}
}
}
