Tickets :: Comment on [#12941] AS: Transition to MODSEQ enabled IMAP server

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Comment	> Hi, > > I finally transitioned to a MODSEQ-enabled IMAP server. The cached > "collection" data is still from the old non-MODSEQ based cyrus server. > > Since the transition, the phones won't sync new IMAP messages until I > reset the collection. > Here's the relevant log: > > ---------------------------- > 2014-01-29T10:37:27+01:00 SAMSUNG1358490047903217 INFO: [15177] > Initializing message diff engine for 0270adeb (INBOX) > 2014-01-29T10:37:27+01:00 SAMSUNG1358490047903217 INFO: [15177] Using > SYNCSTAMP 1390988247 for 0270adeb. > 2014-01-29T10:37:27+01:00 SAMSUNG1358490047903217 INFO: [15177] > Horde_Core_ActiveSync_Driver::getServerChanges(INBOX, 1390806313, > 1390988247, 1389778647, 0) > 2014-01-29T10:37:27+01:00 SAMSUNG1358490047903217 INFO: [15177] > MODSEQ: 0 <-- this is $folder->modseq() > ---------------------------- > > Let's take a look at Imap/Adapter.php::getMessageChanges() with > $folder->modseq(): 0 > $modseq: 102 > > The current code does not handle this case as the non-CONDSTORE sync > code path > tests "if ($modseq == 0)". > > We also can't change that last condition to "if ($modseq == 0 \|\| > $folder->modseq() == 0)" since > the array data layout of $messages or $flags in Folder/Imap.php is > different for the non-MODSEQ / MODSEQ mode -> we might end up with > trashed data structures. > > Right now I think it's best we should detect the transition and throw > a Horde_ActiveSync_Exception_StaleState exception. > > Thoughts? >
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