Re: [sipX-dev] DNS query problem
On Sun, 2007-04-15 at 14:49 +0800, tonyxiao wrote:
> I think there is a lot of way to cause this problem:
>
> In a dial plan, I configure that all calls with prefix 0 will forward to
> sip.mydomian.com.
>
> So the authserver, before forwarding the message(the request URI is like
> INVITE sip:082558998@xxxxxxxxxxxxxxxx), it must perform a DNS query to get
> the IP address of sip.mydomain.com. This can be failed, the reason may be
> that no entry for this domain in DNS server ,or the server is down for that
> moment.
>
> This can cause the SipSrvLookup::servers() spend over one minute to return.
There's something else wrong i the query takes that long, even if it
will eventually fail.
First off, I'd suggest that you put a cache-only DNS server on the same
system, and change /etc/resolv.conf to point to that server.
--
Scott Lawrence tel:+1-781-938-5306;ext=162 or sip:slawrence@xxxxxxxxxxx
sipXecs project coordinator - SIPfoundry http://www.sipfoundry.org/sipXecs
Chief Technology Officer - Pingtel Corp. http://www.pingtel.com/
