Hi Brian, rev_dns affects two scenarios: - comparisons with domains in script ( like src_ip=="foo.bar") - reverse DNS will be done on foo.bar - internal checks of IPs against SIP uri / SIP hosts (like checking for VIA matching, for src IP nat, etc)
Shortly, if when doing IP versus IP/domain checks, if reverse DNS should be done if "domain" Regards, Bogdan [email protected] wrote: > Hello list, > > An ven., déc 18, 2009, [email protected] schrieb: > >> I'm assuming that a delay of 1 second is reachable through config >> tuning, and wondering as well what kind of result (in terms of delay >> time) the maximum tuning yields. Already I've looked at things like: >> >> disable_dns_blacklist >> disable_dns_failover >> >> ...because DNS resolutions is a logical place to start reducing. >> >> Any ideas? Is there documentation about this? >> >> > The OpenSIPS documentation is excellent of course, but sadly lacking > information about such core parameters as those above and 'rev_dns' > relating to when and how often they effect performance. For example, > does 'rev_dns = yes' mean that a reverse lookup takes place once at > startup, every time the route script is entered, once a new > transaction begins, dialog... > > There are a lot of parameters where it's not clear when and how > often they effect performance, or am I missing something? > > Regards, > Brian > > _______________________________________________ > Users mailing list > [email protected] > http://lists.opensips.org/cgi-bin/mailman/listinfo/users > > -- Bogdan-Andrei Iancu www.voice-system.ro _______________________________________________ Users mailing list [email protected] http://lists.opensips.org/cgi-bin/mailman/listinfo/users
