/// <summary>
/// Called once data should be decoded from the given <see cref="IByteBuffer"/>. This method will call
/// <see cref="Decode(IChannelHandlerContext, IByteBuffer, List{object})"/> as long as decoding should take place.
/// </summary>
/// <param name="context"></param>
/// <param name="input"></param>
/// <param name="output"></param>
protected virtual void CallDecode(IChannelHandlerContext context, IByteBuffer input, List <object> output)
{
if (context is null)
{
CThrowHelper.ThrowArgumentNullException(CExceptionArgument.context);
}
if (input is null)
{
CThrowHelper.ThrowArgumentNullException(CExceptionArgument.input);
}
if (output is null)
{
CThrowHelper.ThrowArgumentNullException(CExceptionArgument.output);
}
try
{
while (input.IsReadable())
{
int initialOutputCount = output.Count;
if ((uint)initialOutputCount > 0u)
{
FireChannelRead(context, output, initialOutputCount);
output.Clear();
// Check if this handler was removed before continuing with decoding.
// If it was removed, it is not safe to continue to operate on the buffer.
//
// See:
// - https://github.com/netty/netty/issues/4635
if (context.IsRemoved)
{
break;
}
initialOutputCount = 0;
}
int oldInputLength = input.ReadableBytes;
DecodeRemovalReentryProtection(context, input, output);
// Check if this handler was removed before continuing the loop.
// If it was removed, it is not safe to continue to operate on the buffer.
//
// See https://github.com/netty/netty/issues/1664
if (context.IsRemoved)
{
break;
}
bool noOutgoingMessages = 0u >= (uint)(oldInputLength - input.ReadableBytes);
if (0u >= (uint)(initialOutputCount - output.Count))
{
// no outgoing messages have been produced
if (noOutgoingMessages)
{
break;
}
else
{
continue;
}
}
if (noOutgoingMessages)
{
CThrowHelper.ThrowDecoderException_ByteToMessageDecoder(GetType());
}
if (SingleDecode)
{
break;
}
}
}
catch (DecoderException)
{
throw;
}
catch (Exception cause)
{
CThrowHelper.ThrowDecoderException(cause);
}
}