DNS lookup in c/c++ [closed]

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Closed 8 years ago.

I must write a C/C++ program which works a little bit like dig and nslookup: it must know IP addresses of any site. It should do things like the dig www.example.com MX +short command does. I can't imagine how can this be done. Any ideas?

Answer 1

Use any resolver library you like. Popular libraries include UDNS and adns. You could also just modify the source code to dig (which is part of the bind distribution).