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What is the best way to get SOA record from the specific DNS server? I have an array of servers and need to ask randomly one of them about SOA record of some host.

I need this to be working on iOS and be approved by apple.

PS This is not quite what I need since I cannot specify suctom DNS IP here - Objective-C: DNS TXT Record

UPDATE:

Found this solution: http://www.software7.com/blog/programmatically-query-specific-dns-servers-on-ios/ It is exactly what I need except lib resolv doesn't compiled for arm64 :(

UPDATE 2: Previous link works; I just forgot to link a library. Will post this as an answer

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Artem Aleksandrov
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2 Answers2

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The way to get a SOA record from a DNS server is to send the server a query asking for it. If there is no standard library on iOS with the ability to do that, you should be able to include a third-party one. I like this one: https://www.nlnetlabs.nl/projects/ldns/

Calle Dybedahl
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Found this solution: http://www.software7.com/blog/programmatically-query-specific-dns-servers-on-ios/ It is exactly what I need. I've reworked a little it for my specific proposes, but it fits in general

Artem Aleksandrov
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