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We really should NOT add this code. Instead, we should clean up the code so all of Asterisk use the same resolver and relies on the system configuration. Having a separate DNS resolver, maybe even using a separate DNS server in the PJSIP channel is not a good solution and should be avoided at all cost. The good thing with this review is that it opened my eyes of some stuff in PJSIP that should not be there in the way we use it. - Olle E Johansson On March 13, 2014, 11:42 a.m., Joshua Colp wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://reviewboard.asterisk.org/r/3343/ > ----------------------------------------------------------- > > (Updated March 13, 2014, 11:42 a.m.) > > > Review request for Asterisk Developers. > > > Bugs: ASTERISK-23435 > https://issues.asterisk.org/jira/browse/ASTERISK-23435 > > > Repository: Asterisk > > > Description > ------- > > This change adds a configuration option for setting nameservers to be used by > the PJSIP DNS client. If this option is not set then the system nameservers > are retrieved and used instead. > > This also allows the nameservers to be changed by doing a reload. > > In case others are wondering as Olle was: > > PJLIB-Util (part of pjproject) provides a DNS client which can optionally > (but is highly suggested) to be used with PJSIP. It provides asynchronous > DNS, SRV lookups, multiple record support, etc. Right now this isn't enabled > so we are simply doing A/AAAA record lookups. The reason it's not enabled is > that explicit nameservers *must* be provided to it when enabling it. It will > not use the system ones by itself. The change up on reviewboard enables it by > default using the system nameservers it finds, but with the ability to > override or completely disable it if a user wants. The reason I also provide > reload functionality is that people in #asterisk-dev expressed a concern that > users may change nameservers but don't want to restart Asterisk, which is > understandable. > > > Diffs > ----- > > /branches/12/res/res_pjsip/pjsip_configuration.c 410470 > /branches/12/res/res_pjsip/include/res_pjsip_private.h 410470 > /branches/12/res/res_pjsip/config_global.c 410470 > /branches/12/res/res_pjsip.c 410470 > /branches/12/main/dns.c 410470 > /branches/12/include/asterisk/dns.h 410470 > /branches/12/configs/pjsip.conf.sample 410470 > /branches/12/CHANGES 410470 > > Diff: https://reviewboard.asterisk.org/r/3343/diff/ > > > Testing > ------- > > Explicitly set nameservers and confirmed they were used by PJSIP. Disabled it > and confirmed that the DNS client was disabled. Set to auto (explicitly and > by default) and confirmed that the system nameservers were used. > > > Thanks, > > Joshua Colp > >
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