On Thu, 13 Sep 2007, David Conrad wrote:
On Sep 13, 2007, at 11:43 AM, Tony Finch wrote:
On Thu, 13 Sep 2007, David Conrad wrote:
How do you renumber the IP address stored in the struct sockaddr_in in a
long running critical application?
Applications that don't respect DNS TTLs are broken for many reasons, not
just network renumbering.
Then pretty much every IP-aware application ever written is broken.
Not entirely. Applications that use short-lived connections are generally
OK (so long as the implementation talks to its resolver in a sensible
way - many screw this up). This covers HTTP and most email protocols.
Many apps with long-lived TCP connections can recover OK from a broken
connection. Long-lived UDP associations can be a problem - renumbering an
NTP server is a pain.
Tony.
--
f.a.n.finch <dot(_at_)dotat(_dot_)at> http://dotat.at/
IRISH SEA: SOUTHERLY, BACKING NORTHEASTERLY FOR A TIME, 3 OR 4. SLIGHT OR
MODERATE. SHOWERS. MODERATE OR GOOD, OCCASIONALLY POOR.
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