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Monday, 22 August 2011 17:13 |
In a virtual host, or when your application could run on a multiple type of OS,
it could be difficult to get the IP address corresponding to your default gateway.
Here a solution, which should be 'universal'.
This snippets try to send a datagramme on a distant host (no matter if datagrame
arrive), and
Socket.do_not_reverse_lookup=true
def get_public_ip()
UDPSocket.open do |s|
s.connect '208.80.152.2', 1 # wikipedia, connection don't need effective
s.addr.last
end
end
This option must be positionned :
Socket.do_not_reverse_lookup=true
If not, your ruby machine will try to find DNS name of wikipedia, which could
take a very long time if host is isolated.
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