protected override object Decode(IChannel channel, IByteBuffer buffer, int readable, byte[] header)
{
//Console.WriteLine("decode step1:" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff"));
// check magic number.
if (readable > 0 && header[0] != MagicHigh || readable > 1 && header[1] != MagicLow)
{
int length = header.Length;
if (header.Length < readable)
{
header = ByteUtil.CopyOf(header, readable);
buffer.ReadBytes(header, length, readable - length);
}
for (int i = 1; i < header.Length - 1; i++)
{
if (header[i] == MagicHigh && header[i + 1] == MagicLow)
{
buffer.SetReaderIndex(buffer.ReaderIndex - header.Length + i);
header = ByteUtil.CopyOf(header, i);
break;
}
}
return(base.Decode(channel, buffer, readable, header));
}
// check length.
if (readable < HeaderLength)
{
return(DecodeResult.NeedMoreInput);
}
// get data length.
int len = ByteUtil.Bytes2Int(header, 12);
CheckPayload(channel, len);
//Console.WriteLine("decode step2:" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff"));
int tt = len + HeaderLength;
if (readable < tt)
{
return(DecodeResult.NeedMoreInput);
}
// limit input stream.
ChannelBufferStream input = new ChannelBufferStream(buffer, len);
try
{
//Console.WriteLine("decode step3:" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff"));
return(DecodeBody(channel, input, header));
}
finally
{
if (input.Available() > 0)
{
try
{
if (input.Available() > 0)
{
input.Position = input.Available();
}
}
catch (IOException)
{
}
}
}
}