tree 8925980cee628f091c66aefadf73187e69d535fa
parent 5149350bb437201e59b5d541568ce86e91993034
author Junxiao Shi <git@mail1.yoursunny.com> 1564683286 -0600
committer Junxiao Shi <git@mail1.yoursunny.com> 1564683286 -0600

lp: introduce PIT token

PIT token is a hop-by-hop header field that identifies an
Interest-Data exchange. The downstream node can assign an
opaque token to an outgoing Interest, and the upstream node
is expected to return the same token on the Data or Nack in
reply to that Interest. This would allow the downstream node
to accelerate its processing, especially in PIT lookup.

This commit adds basic encoding and decoding support for
PIT token, as an NDNLPv2 header field as well as a Tag.

refs #4532

Change-Id: I633fc451393746ebe199f41e44e245361b058d5e