draft-demizu-udlr-dtcp-01b.txt

[Noritoshi Demizu <demizu@csl.sony.co.jp>]

We made minor changes to DTCP draft 00, and made a revised version of
DTCP draft.  It is available at:
  http://www.csl.sony.co.jp/person/demizu/udlr/draft-demizu-udlr-dtcp-01b.txt

Changes are mainly for bug fixes and some improvements.
Basic mechanisms are not changed.


Differences between draft 00 and 01b are:
   - DTCP_CODE_STATICONLY is added.
   - Following values are changed: (BIG CHANGE!)
        DTCP_CODE_FULL:         1 -> 2
        DTCP_CODE_GOINGDOWN:    2 -> 3
        DTCP_CODE_NO:           2 -> 3
   - If no response comes back for a DTCP Request that is triggered by
     a DTCP Announcement, "back-off" algorithm is applied before
     sending a next request.  The maximum "back-off" period is
     DTCP_TUN_MAXBACKOFF.
   - Both a Feed and a Receiver SHOULD NOT send back a DTCP Release
     message for a tunnel that they have sent a DTCP Release message
     just before.
   - Variation of valid time is required only when a requested valid
     time is longer than DTCP_TUN_VALIDTIME.
   - The destination port number of a response message such as DTCP
     Reply and DTCP Release SHOULD be copied from the source port
     field of its trigger message.
   - Term "Feeder" is replaced with "Feed".
   - Discussion section is added.

Regards,
Noritoshi Demizu