RE: What does netdate want back from udp-37 server?
The server 'send' command references the incoming ip-port address, and
completes successfully, but no, I'm not exactly sure that the datagram makes
it back to the Debian box.
Is there a simple way for me to verify that a datagram came back (i/o count
or something)?
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From: Jens B. Jorgensen
To: simonst@WellsFargo.COM
Subject: Re: What does netdate want back from udp-37 server?
Date: Friday, February 12, 1999 11:29AM
Are you sure your server is replying with a correct destination port? The
server needs
to send a packet back to the same port which the client used.
simonst@WellsFargo.COM wrote:
> I'm trying to write a mainframe (MVS) timserver (udp-37 only). I test it
> with a Debian 2.0 cmd "netdate udp <mvs.ip.address>", which sends a 1-byte
> 0x0A message. My server sends back a 32-bit unsigned number (# of seconds
> since 1900-01-01, per RFC868), but the Debian netdate command times out.
>
> 1. Why doesn't the netdate command send an empty datagram, per RFC868?
> 2. What exactly is netdate expecting back from udp port-37?
> 3. Why does RFC868 mention negative 32-bit values: -1,297,728,000 "17 Nov
> 1858 GMT"?
>
> I would appreciate any help (or where I might find the netdate source).
>
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--
Jens B. Jorgensen
jjorgens@bdsinc.com
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