wrt https://tools.ietf.org/html/draft-ietf-tls-tls13-11#section-4.3

if we have..

  opaque foo<0..2^16-1>;

..with a floor length of zero, thus with an instantiation of foo of zero length, we actually will have in terms of encoded bytes on the wire (in hex)..

  00 00

..where this is the 2-byte length field, with length value zero, and a
zero-length (ie, absent, empty) vector content, correct ?

thanks,

=JeffH

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