= rping

== Description

rping is a ruby implementation of ping.

* rping use 'raw socket'.
* root authority is required.

== Source Code

https://bitbucket.org/winebarrel/rping

== Example
=== Command

  root> rping
  Usage: rping [options]
      -c COUNT
      -i INTERVAL
      -w TIMEOUT
      -d DESTINATION
  root> rping -c 3 -d localhost
  PING localhost
  36 bytes from localhost (127.0.0.1): icmp_seq=1 ttl=128 time=1.0 ms
  36 bytes from localhost (127.0.0.1): icmp_seq=2 ttl=128 time=0.0 ms
  36 bytes from localhost (127.0.0.1): icmp_seq=3 ttl=128 time=0.0 ms

== Library

  require 'lib/rping'
  
  p RPing.ping('localhost')
  #=> [{:time=>0.0, :dest=>"127.0.0.1", :src=>"127.0.0.1", :ttl=>128, :size=>36, :seq=>1}]
  
  RPing.ping('127.0.0.1', :count => 3) do |reply|
    p reply
    #=> {:time=>0.0, :src=>"127.0.0.1", :dest=>"127.0.0.1", :ttl=>128, :size=>36, :seq=>1}
  end
  
  dests = (1..255).map {|i| "127.0.0.#{i}" }
  p RPing.multi_ping(dests, :timeout => 0.3)
  #=> {"127.0.0.1" => [{:time=>0.0, :dest=>"127.0.0.1", :src=>"127.0.0.1", :ttl=>128, :size=>36, :seq=>1}],
  #    "127.0.0.2" => [nil],
  #    "127.0.0.3" => [nil],
  #    ...

== Reference Documents

* http://www.notwork.org/ipr/article/serial08.html
* http://www.faqs.org/rfcs/rfc792.html