ASN1 - syncInfoValue

[Lee Jensen <lee_jensen@sento.com>]

I am attempting to modify the Net::LDAP module for perl to understand
openLDAP's content synchronization controls (syncrepl functionality).

I am currently able to use refresh and persist mode and retrieve the
cookies/controls that come back with each result but I am having a
problem with the syncInfoMessage. It's an intermediate message as
defined in the RFC.
http://www.ietf.org/internet-drafts/draft-zeilenga-ldup-sync-06.txt

My question is this... In the RFC the syncInfoValue is defined as
follows:
      syncInfoValue ::= CHOICE {
          newcookie      [0] syncCookie,
          refreshDelete  [1] SEQUENCE {
              cookie         syncCookie OPTIONAL,
              refreshDone    BOOLEAN DEFAULT TRUE
          },
          refreshPresent [2] SEQUENCE {
              cookie         syncCookie OPTIONAL,
              refreshDone    BOOLEAN DEFAULT TRUE
          },
          syncIdSet      [3] SEQUENCE {
              cookie         syncCookie OPTIONAL,
              refreshDeletes BOOLEAN DEFAULT FALSE,
              syncUUIDs      SET OF syncUUID
          }
      }

I have code to enable Net::LDAP::ASN to parse this specification but 
something just doesn't seem quite right. I can't tell if there is a 
problem with the ASN decoder or what. I get 2 seemingly different 
messages coming back when I do dumps...

THIS which comes back if I connect with no cookie:

0000   73: SEQUENCE {
0002    1:   INTEGER = 2
0005   68:   [APPLICATION 25] {
0007   24:     [CONTEXT 10]
0009     :       31 2E 33 2E 36 2E 31 2E 34 2E 31 2E 34 32 30 33 1.3.6.1.4.1.4203
0019     :       2E 31 2E 39 2E 31 2E 34 __ __ __ __ __ __ __ __ .1.9.1.4
0021   40:     [CONTEXT 11]
0023     :       A2 26 04 24 63 73 6E 3D 32 30 30 35 30 33 31 35 .&.$csn=20050315
0033     :       31 36 33 33 33 30 5A 23 30 30 30 30 30 31 23 30 163330Z#000001#0
0043     :       30 23 30 30 30 30 30 30 __ __ __ __ __ __ __ __ 0#000000
004B     :   }
004B     : }

AND THIS which comes back if my client connects with an older cookie,
followed by the response above.

0000  146: SEQUENCE {
0003    1:   INTEGER = 2
0006  140:   [APPLICATION 25] {
0009   24:     [CONTEXT 10]
000B     :       31 2E 33 2E 36 2E 31 2E 34 2E 31 2E 34 32 30 33 1.3.6.1.4.1.4203
001B     :       2E 31 2E 39 2E 31 2E 34 __ __ __ __ __ __ __ __ .1.9.1.4
0023  112:     [CONTEXT 11]
0025     :       A3 6E 31 6C 04 10 40 59 47 D0 23 7A 10 29 91 2A .n1l..@YG.#z.).*
0035     :       90 61 61 9A 89 0B 04 10 D2 80 A8 BA 25 FA 10 29 .aa.........%..)
0045     :       8E 95 94 C1 3F CB 53 CE 04 10 9B 33 A5 F2 26 C1 ....?.S....3..&.
0055     :       10 29 9E 3A E7 B7 04 1D 82 48 04 10 F5 52 BF 82 .).:.....H...R..
0065     :       26 C1 10 29 9E 3B E7 B7 04 1D 82 48 04 10 5C 6D &..).;.....H..\m
0075     :       13 D4 26 C2 10 29 9E 3C E7 B7 04 1D 82 48 04 10 ..&..).<.....H..
0085     :       D4 BE C4 3E 26 C4 10 29 92 95 DC CB 4F 43 CF 50 ...>&..)....OC.P
0095     :   }
0095     : }

The CONTEXT 11 field should just be the responseValue which by
definition should be a SyncInfoValue but it won't parse that way.

Could someone please provide some help with this. Honestly I'm 
confused and don't know exactly what to try next.

Lee