private static void MessageLengthReceived(bool successful, int transferred, object state)
{
var data = (ReceiveMessageState)state;
var messageLength = -1;
if (successful)
{
data.Decryptor.Decrypt(data.Buffer, 0, transferred);
messageLength = Message.ReadInt(data.Buffer, 0);
}
if (!successful || messageLength < 0 || messageLength > MaxMessageLength)
{
ClientEngine.BufferManager.FreeBuffer(data.Buffer);
data.Callback(false, null, data.State);
ReceiveCache.Enqueue(data);
return;
}
if (messageLength == 0)
{
ClientEngine.BufferManager.FreeBuffer(data.Buffer);
data.Callback(true, new KeepAliveMessage(), data.State);
ReceiveCache.Enqueue(data);
return;
}
var buffer = ClientEngine.BufferManager.GetBuffer(messageLength + transferred);
Buffer.BlockCopy(data.Buffer, 0, buffer, 0, transferred);
ClientEngine.BufferManager.FreeBuffer(data.Buffer);
data.Buffer = buffer;
NetworkIO.EnqueueReceive(data.Connection, buffer, transferred, messageLength, data.RateLimiter,
data.PeerMonitor,
data.ManagerMonitor, MessageBodyReceivedCallback, data);
}