private void ReadLengthCallback(IAsyncResult res)
{
try
{
var buffObj = (BufferObject)res.AsyncState;
var readLen = ChannelSocket.EndReceive(res);
if (readLen >= 4)
{
buffObj.PacketSize = BitConverter.ToInt32(buffObj.RecBuff, 0);
if (buffObj.PacketSize < buffObj.BufferSize)
{
ChannelSocket.BeginReceive(buffObj.RecBuff, 0, buffObj.PacketSize, 0, ReadDataCallback, buffObj);
}
else
{
ChannelSocket.BeginReceive(buffObj.RecBuff, 0, buffObj.BufferSize, 0, ReadDataCallback, buffObj);
}
}
}
catch
{
}
}
private void ReadDataCallback(IAsyncResult res)
{
var buffObj = (BufferObject)res.AsyncState;
buffObj.ReadLen = ChannelSocket.EndReceive(res);
buffObj.TotalRead += buffObj.ReadLen;
buffObj.CompleteBuff.AddRange(FastBuffer.SliceBuffer(buffObj.RecBuff, 0, buffObj.ReadLen));
if (buffObj.CompleteBuff.Count < buffObj.PacketSize)
{
// keep reading
if (buffObj.BufferSize < (buffObj.PacketSize - buffObj.CompleteBuff.Count))
{
ChannelSocket.BeginReceive(buffObj.RecBuff, 0, buffObj.BufferSize, 0, ReadDataCallback, buffObj);
}
else
{
ChannelSocket.BeginReceive(buffObj.RecBuff, 0, (buffObj.PacketSize - buffObj.CompleteBuff.Count),
0, ReadDataCallback, buffObj);
}
}
else
{
// full message was received
var dataBuff = buffObj.CompleteBuff.ToArray();
var isOperation = BitConverter.ToBoolean(dataBuff, 0);
int internalId;
var operationGuid = Guid.Empty;
var connectionGuid = Guid.Empty;
if (isOperation)
{
operationGuid = new Guid(dataBuff.Slice(2, 16));
Debug.Print("Received operation guid: " + operationGuid);
connectionGuid = new Guid(dataBuff.Slice(18, 16));
internalId = BitConverter.ToInt32(dataBuff, 34);
}
else
{
internalId = BitConverter.ToInt32(dataBuff, 2);
}
if (_internalPacketTbl.ContainsKey(internalId))
{
var packet = (IDataPacket)Activator.CreateInstance(_internalPacketTbl[internalId]);
var ms = new MemoryStream(dataBuff)
{
Position = 2
};
packet.DeserializeFrom(ms);
if (packet is SynchronizePacket)
{
HandleSynchronizePacket(packet as SynchronizePacket);
}
else if (packet is SequenceInitPacket)
{
HandleSequenceInitPacket(packet as SequenceInitPacket);
}
else if (packet is SequencePacket)
{
HandleSequencePacket(packet as SequencePacket);
}
else if (packet is PeerRelocationRequestPacket)
{
HandleRelocationPacket(packet as PeerRelocationRequestPacket);
}
else if (packet is SocketOperationRequest)
{
HandleSocketOperationPacket(packet as SocketOperationRequest);
}
}
else if (ActiveSocketOperations.ContainsKey(operationGuid))
{
using (var ms = new MemoryStream(dataBuff)
{
Position = 34
})
{
var packet = PacketProcessor.ParsePacket(ms);
packet.DeserializeFrom(ms);
ActiveSocketOperations[operationGuid].PacketReceived(packet, this);
}
}
else
{
RawPacketReceived(dataBuff);
}
buffObj.ReadLen = 0;
buffObj.CompleteBuff.Clear();
buffObj.PacketSize = 0;
ChannelSocket.BeginReceive(buffObj.RecBuff, 0, 4, 0, ReadLengthCallback, buffObj);
}
}