Iam developing an DNS-SD application. Could you please
clarify on the following:
1) What should be the criteria to cache a Record -
Should we cache all Records that we see, or is it ok
to only cache the Records that we are currently
interested in ?
It's OK to only cache records for active queries, however, if you
were to additionally cache all records, then it could potentially
reduce network traffic, since the answer to a future query might
already be in the cache, which eliminates the need for a service to
respond again.
2) Is it legal to have more than one question in
question section & their respective known answers in
the answer section of the same query packet ?
Yes, with mDNS-SD it's legal and it's recommended.
3) Is there any difference between a DNS-SD querier &
a mDNS client application - Is both one & the same ?
A DNS-SD querier can either use mDNS or uDNS.
Best Regards,
-Marc
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