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Dnsruby

Dnsruby library

Dnsruby is a thread-aware DNS stub resolver library written in Ruby.

It is based on resolv.rb, the standard Ruby DNS implementation, but gives a complete DNS implementation, including DNSSEC.

The Resolv class can be used to resolve addresses using /etc/hosts and /etc/resolv.conf, or the DNS class can be used to make DNS queries. These interfaces will attempt to apply the default domain and searchlist when resolving names.

The Resolver and SingleResolver interfaces allow finer control of individual messages. The Resolver class sends queries to multiple resolvers using various retry mechanisms. The SingleResolver class is used by Resolver to send individual Messages to individual resolvers.

Resolver queries return Dnsruby::Message objects. Message objects have five sections:

example

res = Dnsruby::Resolver.new # System default
ret = res.query("example.com")
print "#{ret.anwer.length} answer records returned, #{ret.answer.rrsets.length} RRSets returned in aswer section\n"

p Dnsruby::Resolv.getaddress("www.ruby-lang.org")
p Dnsruby::Resolv.getname("210.251.121.214")

Dnsruby::DNS.open {|dns|
  p dns.getresources("www.ruby-lang.org", Dnsruby::Types.A).collect {|r| r.address}
  p dns.getresources("ruby-lang.org", 'MX').collect {|r| [r.exchange.to_s, r.preference]}
}

exceptions

I/O

Dnsruby implements a pure Ruby event loop to perform I/O. Support for EventMachine has been deprecated.

DNSSEC

Dnsruby supports DNSSEC and NSEC(3). DNSSEC support is on by default - but no trust anchors are configured by default. See Dnsruby::Dnssec for more details.

Bugs


@TODO@ Max size for cache?




This class does verification/validation from a single point - signed root, DLV, trust anchors. Dnssec controls a set of these to perform validation for the client. This class should only be used by Dnsruby






























This class provides the facility to load a zone file. It can either process one line at a time, or return an entire zone as a list of records.



require 'Dnsruby/iana_ports'

Constants

VERSION

@TODO@ Remember to update version in dnsruby.gemspec!

Public Class Methods

log() click to toggle source

Get the log for Dnsruby Use this to set the log level e.g. Dnsruby.log.level = Logger::INFO

# File lib/dnsruby.rb, line 117
def Dnsruby.log
  @@logger
end
version() click to toggle source
# File lib/dnsruby.rb, line 108
def Dnsruby.version
  return VERSION
end

[Validate]

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