public void ProcessFromClient(byte[] buffer)
{
int length = buffer.Length;
Array.Copy(buffer, clientRecvMsg.GetBuffer(), length);
clientRecvMsg.Length = length;
OnReceivedDataFromClient(clientRecvMsg.Data);
switch (protocol)
{
case Protocol.None:
case Protocol.Login:
ParseFirstClientMsg();
break;
case Protocol.World:
bool adlerOkay = clientRecvMsg.CheckAdler32();
bool decryptOkay = clientRecvMsg.XteaDecrypt(client.IO.XteaKey);
if (adlerOkay && decryptOkay)
{
clientRecvMsg.Position = 6;
int msgLength = (int)clientRecvMsg.GetUInt16() + 8;
int position = clientRecvMsg.Position;
if (!ParsePacketFromClient(client, clientRecvMsg, serverSendMsg))
{
//unknown packet
byte[] unknown = clientRecvMsg.GetBytes(clientRecvMsg.Length - clientRecvMsg.Position);
OnSplitPacketFromClient(unknown[0], unknown);
}
byte[] data = new byte[clientRecvMsg.Position - position];
Array.Copy(clientRecvMsg.GetBuffer(), position, data, 0, data.Length);
OnSplitPacketFromClient(data[0], data);
}
break;
}
}
private void ClientReadCallBack(IAsyncResult ar)
{
byte[] clientData = null;
try
{
int read = clientStream.EndRead(ar);
if (read < 2)
{
Restart();
return;
}
int pSize = (int)BitConverter.ToUInt16(clientRecvMsg.GetBuffer(), 0) + 2;
while (read < pSize)
{
if (clientStream.CanRead)
{
read += clientStream.Read(clientRecvMsg.GetBuffer(), read, pSize - read);
}
else
{
throw new Exception("Connection broken.");
}
}
clientRecvMsg.Length = pSize;
switch (protocol)
{
case Protocol.None:
ParseFirstClientMsg();
break;
case Protocol.World:
OnReceivedDataFromClient(clientRecvMsg.Data);
clientData = clientRecvMsg.Data;
if (clientRecvMsg.CheckAdler32() && clientRecvMsg.XteaDecrypt(xteaKey))
{
clientRecvMsg.Position = clientRecvMsg.GetPacketHeaderSize();
int msgLength = (int)clientRecvMsg.GetUInt16() + 8;
serverSendMsg.Reset();
int position = clientRecvMsg.Position;
if (!ParsePacketFromClient(client, clientRecvMsg, serverSendMsg))
{
//unknown packet
byte[] unknown = clientRecvMsg.GetBytes(clientRecvMsg.Length - clientRecvMsg.Position);
OnSplitPacketFromClient(unknown[0], unknown);
WriteDebug("Unknown outgoing packet: " + unknown.ToHexString());
serverSendMsg.AddBytes(unknown);
}
byte[] data = new byte[clientRecvMsg.Position - position];
Array.Copy(clientRecvMsg.GetBuffer(), position, data, 0, data.Length);
OnSplitPacketFromClient(data[0], data);
if (AllowOutgoingModification &&
serverSendMsg.Length > serverSendMsg.GetPacketHeaderSize() + 2)
{
serverSendMsg.InsetLogicalPacketHeader();
serverSendMsg.PrepareToSend(xteaKey);
SendToServer(serverSendMsg.Data);
}
else
{
SendToServer(clientData);
}
}
else
{
SendToServer(clientData);
}
clientStream.BeginRead(clientRecvMsg.GetBuffer(), 0, 2, new AsyncCallback(ClientReadCallBack), null);
break;
case Protocol.Login:
break;
}
}
catch (ObjectDisposedException) { /*We don't have to log this exception. */ }
catch (System.IO.IOException ex) { WriteDebug(ex.ToString()); }
catch (Exception ex)
{
WriteDebug(ex.ToString());
if (clientData != null)
{
SendToServer(clientData);
}
}
}
public void ProcessFromServer(byte[] buffer)
{
int length = (int)BitConverter.ToUInt16(buffer, 0) + 2;
if (length > buffer.Length)
{
// Packet is split into multiple chunks
if (partialPacketSize == 0)
{
// This is the first chunk
fullPacketSize = length;
Array.Copy(buffer, serverRecvMsg.GetBuffer(), buffer.Length);
partialPacketSize = buffer.Length;
return;
}
else
{
// This is a subsequent chunk
Array.Copy(buffer, 0, serverRecvMsg.GetBuffer(), partialPacketSize, buffer.Length);
partialPacketSize += buffer.Length;
if (partialPacketSize < fullPacketSize)
{
// Packet is still incomplete
return;
}
else
{
// Packet is complete
serverRecvMsg.Length = fullPacketSize;
}
}
}
else
{
fullPacketSize = 0;
partialPacketSize = 0;
Array.Copy(buffer, serverRecvMsg.GetBuffer(), length);
serverRecvMsg.Length = length;
}
OnReceivedDataFromServer(serverRecvMsg.Data);
switch (protocol)
{
case Protocol.Login:
break;
case Protocol.World:
bool adlerOkay = serverRecvMsg.CheckAdler32();
bool decryptOkay = serverRecvMsg.XteaDecrypt(client.IO.XteaKey);
if (adlerOkay && decryptOkay)
{
serverRecvMsg.Position = 6;
int msgSize = (int)serverRecvMsg.GetUInt16() + 8;
clientSendMsg.Reset();
while (serverRecvMsg.Position < msgSize)
{
int position = serverRecvMsg.Position;
bool parsed = false;
try
{
parsed = ParsePacketFromServer(client, serverRecvMsg, clientSendMsg);
}
catch (Exception ex)
{
WriteDebug(ex.Message + "\nStackTrace: " + ex.StackTrace);
}
if (!parsed)
{
if (serverRecvMsg.Length - serverRecvMsg.Position > 0 &&
serverRecvMsg.Length < serverRecvMsg.GetBuffer().Length)
{
byte[] unknown = serverRecvMsg.GetBytes(serverRecvMsg.Length - serverRecvMsg.Position);
OnSplitPacketFromServer(unknown[0], unknown);
}
break;
}
if (serverRecvMsg.Position - position > 0)
{
byte[] data = new byte[serverRecvMsg.Position - position];
Array.Copy(serverRecvMsg.GetBuffer(), position, data, 0, data.Length);
OnSplitPacketFromServer(data[0], data);
}
}
}
break;
case Protocol.None:
break;
}
}
