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Subject: RE: Change-Request: Hostnames used for Channel Access / Access Security
From: "Jeff Hill" <[email protected]>
To: "'Ralph Lange'" <[email protected]>, "'Janet Anderson'" <[email protected]>, "'Bob Dalesio'" <[email protected]>, "'Andrew Johnson'" <[email protected]>, "'Marty Kraimer'" <[email protected]>, "'Eric Norum'" <[email protected]>, "'Core-Talk Archive'" <[email protected]>
Date: Thu, 20 Mar 2003 15:36:34 -0700
Given the precedence set with DNS you could certainly argue for
case insensitivity. I don't know if there are any systems out
there that rely on case sensitivity in the AS rules - probably
not many given the way host names are parsed in DNS.

Jeff

> -----Original Message-----
> From: Ralph Lange [mailto:[email protected]]
> Sent: Thursday, March 20, 2003 9:14 AM
> To: Janet Anderson; Bob Dalesio; Jeff Hill; Andrew Johnson;
> Marty Kraimer; Eric Norum; Core-Talk Archive
> Subject: Change-Request: Hostnames used for Channel Access /
> Access Security
> 
> Hi.
> 
> I just run into a misfeature again that I already stumbled over
> a year
> ago: host names for CA and AS are host sensitive, whereas in
> all other
> places the case of host names is ignored.
> 
> (See: http://www.aps.anl.gov/epics/tech-talk/2002/msg00121.php)
> 
> This time the problem occurred when a windows client machine
> was updated
> from NT4.0 (where CA transmits the host name as lower case) to
> Windows2000 (where the same name gets transmitted as upper
> case). As
> this machine is a double boot thing that is supposed to run
> both
> platforms depending on its use, I had to add two hostnames to
> the AS
> definition file, one in lower and one in upper case. This just
> doesn't
> look like the best way to handle the issue.
> 
> What if both the CA client lib on startup and the AS lib when
> reading
> the definition file convert host names to lower case?
> 
> Does 3.14 handle this already in a better way? (I don't have
> 3.14 on a
> WIN system to test.)
> 
> What do you think?!
> Ralph



References:
Change-Request: Hostnames used for Channel Access / Access Security Ralph Lange

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