I'd also like to see Activesync support besides Caldav/Carddav in Sogo
as nearly every mobile device has native support for it and it's the
de-facto Sync standard.
SyncML is sometimes nice but in our tests it was to unstable and had to
many problems. It happens very often that all synced data appear not
only once on the device but 2,3,4... times and after every following
sync they appear one more time. This seems to happen if there was a sync
error through a bad connection, which can happen very often, or
something other.
Caldav/Carddav is the best choice I know. He had never problems with it.
But as Caldav is not supported by the majority of devices, ActiveSync
seems the 2nd best choice as it's working better in our tests than
SyncML and natively supported by most devices.
Am 21.01.2012 08:24, schrieb Heiner Markert:
Am Friday 20 January 2012 20:44:58 schrieb André Schild:
Am 20.01.2012 19:44, schrieb Heiner Markert:
Am Wednesday 18 January 2012 20:16:08 schrieb Ludovic Marcotte:
On 18/01/12 01:39, André Schild wrote:
I don't see why we should drop SyncML support, it's working after all
and a OPEN standard...
The Problem with Activesync stuff is always the potential license
question, what if MS will start claim license violations by Z-Push
(Justified or not does not matter) ?
I fully agree here about the licensing violation.
There already exists a sogo backend for Z-Push, a few posts ago is a
link for download.
I will try to make it better available, so we can work on improving it.
We could also import it on our source repository. We did this a while
ago from the connector developed by Philipp Kewisch, but he soon after
abandoned its development.
The one big advantage I see of ActiveSync is, that you have only one
setup to do for Email,Calendar,Contacts and Tasks and all traffic
flows via HTTP(S)
There are several disadvantages of ActiveSync compared to native
Cardav/Caldav support:
- Only ONE Calendar, Contacts and Tasks can be synched
- Only one ActiveSync account is possible
- Mail handling is very limited
Indeed but it should be compared with SyncML/Funambol, not
CalDAV/CardDAV.
I would still very much like to open a discussion about this - ie.,
Funambol (SyncML) backend vs. Z-Push (ActiveSync) backend.
To offer a very good mobile experience, I feel we'll have to make a
choice and focus our efforts into one or the other. We chose Funambol
many years ago. It might have been a good choice back then but it
doesn't mean it's still the best.
On my end (and speaking for myself only), there are some things I
dislike about Funambol such as a worthless bug tracker, patches taking
decades to get accepted (or even bugs getting acknowledged), Java-based
(enough said here), requires more resources than all other SOGo
components and requirements combined together and multiplied by your
favorite factor of the day (must be greater than 2), almost impossible
to package together with SOGo and more.
What I mostly fear about Z-Push is that we'll revisit all the device
synchronization bugs we had over the past few years with Funambol/SyncML
and we'll have to hack around like we did. This is very valuable time
and know-how here. Getting the Z-Push connector up and running can be
done in a snap, but refining it will take some time. Also, having the
Sword of Damocles on top of my head regarding the licensing agreement
doesn't make me a happy, happy, joy man.
Hello,
despite the issues, I would very much like to see a z-push sogo or even a
more general z-push caldav/carddav backend.
In my experience, activesync support is more mature on the phones I
experimented with, than syncml support is. And almost any phone supports
it.
For Smartphones thats completely true, but for non smartphones
you often have only SyncML builtin. (So they don't have to pay license
fees to microsoft for including the active sync protocol in the phones)
André
Hello,
very recently I've seen a rather cheap Samsung feature-phone (around 75€ in
Germany) that did come with Activesync, but no Syncml client, so Activesync
seems to be arriving at non-smartphones. Even simpler entry-level basic
phones, from my experience, ususally have no or nearly unusable calendar
application and are not able to sync at all.
Best regards
Heiner
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