[ntp:questions] Re: Server returns 0 as originate timestamp
Per Hedeland
per at hedeland.org
Sun Feb 6 22:05:41 UTC 2005
In article <Xns95F5D002B169EFlyingCircus at 195.130.132.70> Dirk Claessens
<will.bounce at invalid> writes:
>
>I'm currently writing a simple Windows SNTP-client.
>It works nicely, except for one thing: although I fill in the originate
>timestamp field ( T1) , the server always returns all zeroes in this
>field in the reply message.
You should not fill in the originate timestamp but the transmit
timestamp - from RFC 2030:
To calculate the roundtrip delay d and local clock offset t relative
to the server, the client sets the transmit timestamp in the request
to the time of day according to the client clock in NTP timestamp
format. The server copies this field to the originate timestamp in
the reply and sets the receive timestamp and transmit timestamp to
the time of day according to the server clock in NTP timestamp
format.
--Per Hedeland
per at hedeland.org
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