public dynamic Decode(IChannel channel, PacketBuffer buffer)
{
buffer.BeginBufferIndex();
if(buffer.AvailableBytes() > MaxBufferSize)
{
channel.Disconnect();
return null;
}
if (buffer.AvailableBytes() == 0)
return null;
Request request;
try
{
request = Request.Parse(buffer);
}
catch (Exception)
{
buffer.ResetBufferIndex();
return null;
}
buffer.EndBufferIndex();
return request;
}
/// <summary>
/// BSON 패킷 구조를 따르는 PacketBuffer을 BSON Data로 변환 시키는 메서드
/// </summary>
/// <param name="buffer">BSON 패킷 구조를 따르는 Packet Buffer</param>
/// <returns>BSON Data</returns>
public dynamic Decode(IChannel channel, PacketBuffer buffer)
{
//버퍼 읽기 시작을 알림
buffer.BeginBufferIndex();
if (buffer.AvailableBytes() < 5) //버퍼길이가 5미만이면 리턴
return null;
uint len = buffer.ReadUInt32();
if (len > buffer.AvailableBytes())
{
//버퍼의 길이가 실제 패킷 길이보다 모자름으로, 리셋후 리턴
buffer.ResetBufferIndex();
return null;
}
var data = new byte[len];
buffer.ReadBytes(data);
buffer.EndBufferIndex();
var stream = new MemoryStream(data);
dynamic res = Serializer.Deserialize(new BsonReader(stream));
stream.Dispose();
return res;
}
public object Decode(IChannel channel, PacketBuffer buffer)
{
//버퍼 읽기 시작을 알림
buffer.BeginBufferIndex();
if (buffer.AvailableBytes() < 6) //버퍼길이가 5미만이면 리턴
return null;
buffer.ReadByte();
uint len = buffer.ReadUInt32();
if (len > buffer.AvailableBytes())
{
//버퍼의 길이가 실제 패킷 길이보다 모자름으로, 리셋후 리턴
buffer.ResetBufferIndex();
return null;
}
var data = new byte[len];
buffer.ReadBytes(data);
buffer.EndBufferIndex();
var stream = new MemoryStream(data);
var res = Unpacker.Create(stream).Unpack<MessagePackObject>();
stream.Dispose();
return res;
}
public dynamic Decode(IChannel channel, PacketBuffer buffer)
{
buffer.BeginBufferIndex();
var stream = new MemoryStream();
while (true)
{
if (buffer.AvailableBytes() < 2)
return null;
byte frameH = buffer.ReadByte();
byte frameP = buffer.ReadByte();
int len = frameP & 0x7F;
if (len > 0x7D)
{
if (buffer.AvailableBytes() < 2)
return null;
for (var i = 0; i < 2; i++)
len = (len << 8) + buffer.ReadByte();
if ((frameP & 0x7F) == 0x7F)
{
if (buffer.AvailableBytes() < 2)
return null;
for (var i = 0; i < 2; i++)
len = (len << 8) + buffer.ReadByte();
}
}
if (buffer.AvailableBytes() < 4 + len)
return null;
byte[] key = (frameP & 0x80) == 0x80 ? buffer.ReadBytes(4) : null;
byte[] data = null;
if (key == null)
{
data = buffer.ReadBytes(len);
}
else
{
data = new byte[len];
for (int i = 0; i < len; i++)
data[i] = (byte) (buffer.ReadByte() ^ key[i%4]);
}
stream.Write(data, 0, len);
if ((frameH & 0xF) == 8)
{
buffer.EndBufferIndex();
return new ConnectionClose();
}
if ((frameH & 0xF) == 9)
{
buffer.EndBufferIndex();
return new Ping();
}
if((frameH & 0xF) == 10)
{
buffer.EndBufferIndex();
return new Pong();
}
if((frameH & 0x80) == 128)
break;
}
buffer.EndBufferIndex();
return stream.ToArray();
}