skadns
Software
www.skarnet.org

The skadnsfilter program

skadnsfilter converts a series of IP addresses to host names. Its interface and behaviour are the same as dnsfilter's.

Options

Notes

skadnsfilter performs the same work as dnsfilter: it should have roughly the same speed (with a little overhead due to communication time with the daemon). The major difference is the programming style: see the source code of both programs. While dnsfilter handles the DNS queries itself, skadnsfilter leaves it to the library and makes only high-level calls, without even being aware of the network.

skadnsfilter is entirely asynchronous: it handles stdin and stdout asynchronously, as well as the DNS queries. By contrast, dnsfilter handles stdin and stdout synchronously, and DNS resolution may block if one of them blocks.