Rust DNS

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A DNS library for the Rust language.

Sample client code is located in src/bin/testclient.rs. There is currently no write support, so it sends a captured sample packet doing a recursive A-record lookup for facebook.com, parses the response, and prints out an fmt::Show view of the response.

There are currently two implementations in the library.

dns::hp

Minimal-allocation DNS packet parsing code. With ~500 byte packets (i.e., nameservers and glue records for the .com TLD), the rudimentary benchmark in src/bin/benchmark.rs it can handle about 160,000 packets per second with 4 threads on a quad-cord 2012 Retina MacBook Pro.

This implementation is very narrowly architected for fast parsing, and has no support for constructing packets.

dns::msg

General-purpose DNS packet parsing and representation. Designed to support both parsing and construction of DNS queries and responses.