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Ok, we reporudced the issue and h_errno is '2' and hstrerror says that is "Host name lookup failure" which I think is the TRY_AGAIN condition. But after this point it doesn't correctly resolve until the program is restarted (and we need 99.9999% uptime on this, so re-starting isn't an option) I'll try bracketing it with the sethostent() and endhostent() to see if that works but right now I'm at a loss as to why this is happening. -fjr >From: "Jerry Feldman" <gaf at blu.org> >To: discuss at blu.org >Subject: Re: strange gethostsbyname error... >Date: Tue, 18 Jun 2002 09:46:00 -0400 > >What is the errno returned: > The variable h_errno can have the following values: > > HOST_NOT_FOUND > The specified host is unknown. > > NO_ADDRESS or NO_DATA > The requested name is valid but does not have an IP > address. > > NO_RECOVERY > A non-recoverable name server error occurred. > > TRY_AGAIN > A temporary error occurred on an authoritative name > server. Try again later. > > >Also, do you use sethostent() and endhostent(); > >On 18 Jun 2002 at 13:03, Frank Ramsay wrote: > > > > > > > I'm down at a client site doing some troubleshooting and I've come >across a > > very strange gethostbyname error. It's returning NULL on a hostname in >the > > /etc/hosts file. What happens is when the remote server goes down the > > client program tries to re-connect every few hundred times though it's >main > > loop. The idea being it will re-connect when server comes back up. >When it > > first comes up it works, but after an hour or two gethostbyname starts >to > > fail. Has anyone seen anything like this before? > > redhat 7.2 > > glibc-2.2.4-19 > > > > > > -fjr > > > > > > _________________________________________________________________ > > Send and receive Hotmail on your mobile device: http://mobile.msn.com > > > > _______________________________________________ > > Discuss mailing list > > Discuss at blu.org > > http://www.blu.org/mailman/listinfo/discuss > > >-- >Jerry Feldman <gaf at blu.org> >Associate Director >Boston Linux and Unix user group >http://www.blu.org PGP key id:C5061EA9 >PGP Key fingerprint:053C 73EC 3AC1 5C44 3E14 9245 FB00 3ED5 C506 1EA9 > >_______________________________________________ >Discuss mailing list >Discuss at blu.org >http://www.blu.org/mailman/listinfo/discuss _________________________________________________________________ Send and receive Hotmail on your mobile device: http://mobile.msn.com
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