[quicwg/base-drafts] Renumber packet types and invert Connection ID Flag (#956)

[Colin Perkins <[e-mail]>]

This commit makes the following changes:

- Renumber long header packet types to count from 0x7f downwards, rather than from 0x01 upwards
- Renumber short header packet types to count from 0x1f downward, rather than from 0x01 upward
- Invert the sense of the Connection ID Flag in the short header packets, to become an Omit Connection ID Flag

This is a purely syntactic change, with no semantic impact on QUIC.

The purpose of the changes is to make it possible to easily demultiplex QUIC and STUN packets running on a single UDP port, to enable peer to peer use of QUIC. It also enables demultiplexing of WebRTC packets and QUIC packets on a single UDP port.

Discussed in QUIC and AVTCORE working groups at IETF 100 (draft-aboba-avtcore-quic-multiplexing-01) and on QUIC mailing list.

Addresses issue #426 
You can view, comment on, or merge this pull request online at:

  https://github.com/quicwg/base-drafts/pull/956

-- Commit Summary --

  * Renumber packet types and invert Connection ID Flag

-- File Changes --

    M draft-ietf-quic-transport.md (52)

-- Patch Links --

https://github.com/quicwg/base-drafts/pull/956.patch
https://github.com/quicwg/base-drafts/pull/956.diff

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