[reSIProcate] DNS SRV multiple records and timeouts

[Scott Godin]

>From the wiki:

   - DNS path is whitelisted when we receive any response that doesn't
   result in a grey list or a black list


By response it is referring to a SIP response (ie: 200, 404, etc.).  So
once a good path is found, resip will stick to it.

Scott


On Thu, Aug 15, 2013 at 2:16 PM, Nathan Stratton <nathan at robotics.net>wrote:

> On Thu, Aug 15, 2013 at 12:44 PM, Scott Godin <sgodin at sipspectrum.com>wrote:
>
>> Hi Nathan,
>>
>> For Whitelisting - what do you mean about knowing all the hosts upfront?
>>   I was referring to enabling the resip DNS Whitelisting feature - this
>> doesn't require knowing anything up front.
>>
>
> I guess I don't understand how a record would get whitelisted. The DUM
> would get two records back from the SRV record, and try the first that
> would be grey listed because of a timeout. It looks like a path is
> whitelisted when there is a response that does not end in grey or black.
>
> I guess I thought that because the 2nd record was never tried, you would
> need to add them to the whitelist before hand so that on the next request
> you would try the 2nd host first rather then the first timeout host.
>
> --
> ><>
> Nathan Stratton                                               Founder, CTO
> Exario Networks, Inc.
> nathan at robotics.net                                     nathan at
> exarionetworks.com
> http://www.robotics.net
> http://www.exarionetworks.com/
>
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