[Owncloud] Client time delta

[Jono]

There are certainly some good methods out there for determining time
deltas over a network. While you cant guarantee the result, you can
get a good appromixation with something like this:
http://stackoverflow.com/questions/3755208/measuring-time-difference-between-networked-devices

However, as I understand it, time deltas will soon be a thing of the
past. The sync client is being revised to use checksums instead of
timestamps over the network such that issues like yours will not be a
problem.


On Fri, Aug 10, 2012 at 5:09 PM, Juan Carlos Cornejo
<mylists at paintblack.com> wrote:
> Hi,
>
> I found that the ownCloud Desktop client (built from git) refuses to
> sync a directory which has more than 2000 files. The reason I found
> for this is because the time_diff_delta is always greater than 5
> seconds (actually, always coming in at 7 seconds).
>
> Not knowing exactly what this time_diff_delta is supposed to measure (
> differences between server time and local time, or total time required
> by the server to respond), I ask here in order to figure out a
> solution.
>
> Basically, if the goal is just to find out the time difference between
> the server and local time, then this will always fail in cases when it
> takes the server a while to process the request (such as having too
> many files). A sort of fix is to measure the delta by comparing the
> server time to a time right before sending the request (a difference I
> found to always be negligible) as opposed to after the request
> returns. Unfortunately, I think this might produce misleading results
> in the case where the delay was not caused by a busy server, but by
> latency in the network.  Perhaps a combination of the two might be
> required.
>
> But I'm thinking, would it instead be possible to have the server (and
> by that I mean SabreDAV) respond with the total time it took the
> server to process the request? Then, in principle, this could take
> care of both server delay and network latency issues.
>
> Any thoughts?
>
> Best,
> Juan Carlos
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