Tickets :: Comment on [#12588] Activesync Ping Request Limit

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Comment	> We already have code that does this. See: > Horde_ActiveSync_Collections::pollForChanges(). We store the starting > timestamp of each PING or Heartbeat SYNC request in the syncCache, > then on each iteration of the PING/SYNC loop we verify that the > timestamp of the currently running sync is not older than the > timestamp stored in the syncCache (which would indicate another PING > process has started). With this code, there should never be more than > 2 running PING requests at anytime, and the older request should > detect that it's stale and die. > > If this is not working for you, I would need to see the synclog > covering the requests that this is failing for. > > FWIW I wanted to use a semaphore to monitor this, but the shared > memory functions in PHP needed to do this are not present on every > system. Horde_Cache could be used, but there is no guarantee that one > is available. At some point, I'll probably end up sniffing out the > available capabilities then fall back to the syncCache method though > this will add complexity.
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