private void HandleFragment(UnsafeBuffer buffer, int offset, int length, Header header, byte flags)
{
if ((flags & FrameDescriptor.BEGIN_FRAG_FLAG) == FrameDescriptor.BEGIN_FRAG_FLAG)
{
_builder.Reset().Append(buffer, offset, length);
}
else
{
_builder.Append(buffer, offset, length);
if ((flags & FrameDescriptor.END_FRAG_FLAG) == FrameDescriptor.END_FRAG_FLAG)
{
int msgLength = _builder.Limit();
_delegate(_builder.Buffer(), 0, msgLength, header);
_builder.Reset();
}
}
}
/// <summary>
/// The implementation of <seealso cref="IControlledFragmentHandler"/> that reassembles and forwards whole messages.
/// </summary>
/// <param name="buffer"> containing the data. </param>
/// <param name="offset"> at which the data begins. </param>
/// <param name="length"> of the data in bytes. </param>
/// <param name="header"> representing the meta data for the data. </param>
/// <returns> <see cref="ControlledFragmentHandlerAction"/> to be taken after processing fragment.</returns>
public ControlledFragmentHandlerAction OnFragment(IDirectBuffer buffer, int offset, int length, Header header)
{
var action = ControlledFragmentHandlerAction.CONTINUE;
byte flags = header.Flags;
if ((flags & FrameDescriptor.UNFRAGMENTED) == FrameDescriptor.UNFRAGMENTED)
{
action = _delegate.OnFragment(buffer, offset, length, header);
}
else
{
if ((flags & FrameDescriptor.BEGIN_FRAG_FLAG) == FrameDescriptor.BEGIN_FRAG_FLAG)
{
_builder.Reset().Append(buffer, offset, length);
}
else
{
int limit = _builder.Limit();
if (limit > 0)
{
_builder.Append(buffer, offset, length);
if ((flags & FrameDescriptor.END_FRAG_FLAG) == FrameDescriptor.END_FRAG_FLAG)
{
action = _delegate.OnFragment(_builder.Buffer(), 0, _builder.Limit(), header);
if (ControlledFragmentHandlerAction.ABORT == action)
{
_builder.Limit(limit);
}
else
{
_builder.Reset();
}
}
}
}
}
return(action);
}