public IncomingPacket Parse(SocketManager manager, BufferSegment data, TransportEventTypes transportEvent = TransportEventTypes.Unknown)
{
using (var stream = new System.IO.MemoryStream(data.Data, data.Offset, data.Count))
{
var buff = BufferPool.Get(MsgPackReader.DEFAULT_BUFFER_SIZE, true);
try
{
var context = new SerializationContext
{
Options = SerializationOptions.SuppressTypeInformation/*,
* ExtensionTypeHandler = CustomMessagePackExtensionTypeHandler.Instance*/
};
IJsonReader reader = new MsgPackReader(stream, context, Endianness.BigEndian, buff);
reader.ReadObjectBegin();
int type = -1, id = -1;
string nsp = null;
bool hasData = false, readData = false;
IncomingPacket packet = IncomingPacket.Empty;
READ:
while (reader.Token != JsonToken.EndOfObject)
{
string key = reader.ReadMember();
switch (key)
{
case "type":
type = reader.ReadByte();
break;
case "nsp":
nsp = reader.ReadString();
break;
case "id":
id = reader.ReadInt32();
break;
case "data":
if (!hasData)
{
hasData = true;
SkipData(reader, (SocketIOEventTypes)type);
}
else
{
readData = true;
packet = new IncomingPacket(transportEvent != TransportEventTypes.Unknown ? transportEvent : TransportEventTypes.Message, (SocketIOEventTypes)type, nsp, id);
(string eventName, object[] args) = ReadData(manager, packet, reader);
packet.EventName = eventName;
if (args != null)
{
if (args.Length == 1)
{
packet.DecodedArg = args[0];
}
else
{
packet.DecodedArgs = args;
}
}
}
break;
}
}
// type, nsp, id and data can come in any order. To read data strongly typed we need to know all the additional fields before processing the data field.
// In order to do it, when we first encounter the data field we skip it than we do a reset and an additional turn but reading the data too now.
if (hasData && !readData)
{
reader.Reset();
stream.Position = 0;
reader.ReadObjectBegin();
goto READ;
}
reader.ReadObjectEnd();
return(packet.Equals(IncomingPacket.Empty) ? new IncomingPacket(transportEvent != TransportEventTypes.Unknown ? transportEvent : TransportEventTypes.Message, (SocketIOEventTypes)type, nsp, id) : packet);
}
finally
{
BufferPool.Release(buff);
}
}
}
