This page contains automated test results for code from O'Reilly's Ruby Cookbook. If this code looks interesting or useful, you might want to buy the whole book.

--- www.oreilly.com ping statistics --- 1 packets transmitted, 1 packets received, 0% packet loss round-trip min/avg/max = 183.6/183.6/183.6 ms 10 8
Pinging a Machine
CodeExpectedActual
require 'ping'
Ping::pingecho('oreilly.com')
 true true 
Ping::pingecho('localhost')
 true true 
Ping::pingecho('127.0.0.1')
 true true 
Ping::pingecho('no.such.domain')
 false false 
Ping::pingecho('222.222.222.222')
 false false 
system('ping -c1 www.oreilly.com')
 
64 bytes from 208.201.239.36: icmp_seq=0 ttl=42 time=27.2 ms
 






#


--- www.oreilly.com ping statistics ---
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max = 27.2/27.2/27.2 ms


Error! (Exception?) Here's stdout:







Ping::pingecho('microsoft.com')

false
false





require 'net/http'
Net::HTTP.start('microsoft.com') { 'success!' }

"success!"
"success!"





Net::HTTP.start('no.such.domain') { "success!" }        


SocketError: getaddrinfo: Name or service not known
...


SocketError: getaddrinfo: Name or service not known
	from /usr/lib/ruby/1.8/net/http.rb:562:in `initialize'
	from /usr/lib/ruby/1.8/net/http.rb:562:in `connect'
	from /usr/lib/ruby/1.8/timeout.rb:48:in `timeout'
	from /usr/lib/ruby/1.8/timeout.rb:76:in `timeout'
	from /usr/lib/ruby/1.8/net/http.rb:562:in `connect'
	from /usr/lib/ruby/1.8/net/http.rb:555:in `do_start'
	from /usr/lib/ruby/1.8/net/http.rb:544:in `start'
	from /usr/lib/ruby/1.8/net/http.rb:440:in `start'
	from (irb):12