CUPS & IPP_TAG_EXTENSION

Hi Everybody,

yet another question regarding IPP.

In RFC8010, it is stated that IPP_TAG_EXTENSION is encoded similarly to 
any other tag: starting with 1 byte of tag (0x7f), followed by the 
attribute name, and then the attribute value. However, the RFC specifies 
that the first 4 bytes of the value should be reserved to encode 4 bytes 
of an extended tag.

On the other hand, the CUPS implementation encodes 0x7f, followed by 4 
bytes of the extended tag, and then the attribute name and value.

So, the question arises: which approach is correct, CUPS or the RFC?

-- 

	Wishes, Alexander Pevzner ([email protected])