Stabbing in the dark here...

Has the "some message" format now changed with Leopard? Any unused fields that must now be zero? Any subtle changes to the protocol?

More things to try:

You can file a bug report with Apple.

As a last resort - buy an apple DTS incident. $200 and you have Apple's ear.

Best of luck.

Gary

On Nov 18, 2008, at 2:49 AM, Gerriet M. Denkmann wrote:


On 18 Nov 2008, at 15:27, Stefan Werner wrote:

Aren't port numbers 0-1023 privileged under Unix and therefore only to applications running as root? If you're running your application as a regular user, it can't open a listening socket on port 123. It should still be perfectly able to send requests to port 123 on other hosts and receive answers to those requests.

That is exactly what I am trying to do (and which worked perfectly on Tiger): send some message on port 123 (to some ntp server) and receive an answer.
On Leopard I send, but never get an answer.
It does not seem to be an endian issue (the running version was last tested on a Tiger iBook ppc) - both intel and ppc produce the same 48 byte packages.

I really don't know what to try next.

Kind regards,

Gerriet.

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