[ntp:questions] NTP for iPhone

Danny Mayer mayer at ntp.org
Tue Feb 16 23:57:26 UTC 2010

casebash wrote:
> I am building an iPhone application that needs to ensure thats its
> time is accurate to a fraction of a second. I am considering setting
> up the devices to check the time on startup using the NTP protocol (or
> maybe the simple NTP protocol).
> 1) Are there any NTP libraries for the iPhone?
> 2) It was suggested to me that I could pull code from OpenNTPD or
> perhaps another c project (the iPhone supports c code). About how much
> work would it take to make this work on the iPhone given I have no
> experience with NTP?
> 3) Any other advice?

I suspect using the ntpd for the Mac would get you most of the way
there. I have no clue if there would be compile problems or run problems
but I believe that Apple would make their iPhone O/S as close as
possible to what they run on the Mac.


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