void InitializeHandler(SocketAsyncEventArgs args)
{
if (args.SocketError != SocketError.Success)
{
CloseSocket();
return;
}
if (args.BytesTransferred > 0)
{
if (_packetBuffer.GetRemainingSpace() > 0)
{
// need to receive the header
int readHeaderSize = Math.Min(args.BytesTransferred, _packetBuffer.GetRemainingSpace());
_packetBuffer.Write(args.Buffer, 0, readHeaderSize);
if (_packetBuffer.GetRemainingSpace() > 0)
{
// Couldn't receive the whole header this time.
AsyncReadWithCallback(InitializeHandler);
return;
}
ByteBuffer buffer = new ByteBuffer(_packetBuffer.GetData());
string initializer = buffer.ReadString((uint)ClientConnectionInitialize.Length);
if (initializer != ClientConnectionInitialize)
{
CloseSocket();
return;
}
byte terminator = buffer.ReadUInt8();
if (terminator != '\n')
{
CloseSocket();
return;
}
// Initialize the zlib stream
_compressionStream = new ZLib.z_stream();
// Initialize the deflate algo...
var z_res1 = ZLib.deflateInit2(_compressionStream, 1, 8, -15, 8, 0);
if (z_res1 != 0)
{
CloseSocket();
Log.outError(LogFilter.Network, "Can't initialize packet compression (zlib: deflateInit2_) Error code: {0}", z_res1);
return;
}
_packetBuffer.Reset();
HandleSendAuthSession();
AsyncRead();
return;
}
}
AsyncReadWithCallback(InitializeHandler);
}
bool ReadHeader()
{
PacketHeader header = new PacketHeader();
header.Read(_headerBuffer.GetData());
if (!header.IsValidSize())
{
Log.outError(LogFilter.Network, $"WorldSocket.ReadHeaderHandler(): client {GetRemoteIpAddress()} sent malformed packet (size: {header.Size})");
return(false);
}
_packetBuffer.Resize(header.Size);
return(true);
}