astro / em-asyncns

Resolve domain names from EventMachine with libasyncns

Motivation

Connecting to hostnames from EventMachine? Dissatisfied from the Dnsruby experience? Disappointed by the lack of EventMachine support in Dnsruby trunk? Then you want this.

Usage

    require 'em/resolver'
    
    EM.run {
      res = EventMachine::Resolver.new
      q = res.getaddrinfo("localhost")
      q.callback do |addresses|
        addresses.each { |address|
          spam! address
        }
      end
      q.errback do |error|
        puts "Oh noes: #{error}"
      end
    }

Dnsruby compatibility

A drop-in replacement for Dnsruby is provided given you use the library exactly as stated in the EventMachine FAQ.

See spec/dnsruby_spec.rb for details.

ext/asyncns.h

...is included in a slightly modified form because the original one had parameter names like `class' which prevents compiling as C++.