To get IP addres of the machine

Ruby
1

Hi
Could you please tell the code to get the IPaddress of my machine

Sijo

2

Sijo Kg wrote:

Hi
Could you please tell the code to get the IPaddress of my machine

This might work:

class Socket
class << self
def get_ip hostName
begin
ipInt = gethostbyname(hostName)[3]
return “%d.%d.%d.%d” % [ipInt[0].ord, ipInt[1].ord,
ipInt[2].ord, ipInt[3].ord]
rescue SocketError # bizarre, but happens
return ‘’
end
end

def get_host_ip
  begin
    ip = Socket.getaddrinfo(Socket.gethostname, nil,

Socket::AF_UNSPEC, Socket::SOCK_STREAM, nil,
Socket::AI_CANONNAME).select{|type| type[0] == ‘AF_INET’}[0][3] # ltodo
hmm we don’t want it to do the reverse lookups!
raise if ip.blank?
return ip
rescue => e
get_ip(Socket.gethostname) # less accurate or something, I guess
end
end

end
end

3

Hi
Thanks for the reply But please give an example to instantiate an object
of this class also

Sijo

4

Sijo Kg wrote:

Could you please tell the code to get the IPaddress of my machine

Your machine may have multiple IP addresses, but assuming its hostname
has been set up properly, the following may do the trick:

require ‘socket’
ip = IPSocket.getaddress(Socket.gethostname)

5

On Jan 6, 2009, at 3:15 PM, ab5tract wrote:

ip[0]
end

my_ip = IPAddr.new(get_ip)

I had to do this as a work around before, though if I was working
around an issue with Socket.gethostname or my own ignorance I can no
longer tell ;

It is important to realize that this method won’t take into account
any sort of NAT device that may be between you and an external website.
Whether that is important or not depends on the reason for needing an
IP address in the first place.

6

Sijo Kg wrote:

Could you please tell the code to get the IPaddress of my machine

Another way to do this:

require ‘ipaddr’
require ‘net/http’

def get_ip
con = Net::HTTP.new(‘checkip.dyndns.org’, 80)
resp,body = con.get(“/”, nil)
ip = body.match(/\d+.\d+.\d+.\d+/)

ip[0]
end

my_ip = IPAddr.new(get_ip)

I had to do this as a work around before, though if I was working
around an issue with Socket.gethostname or my own ignorance I can no
longer tell :wink:

7

Roger P. wrote:

Sijo Kg wrote:

Hi
Could you please tell the code to get the IPaddress of my machine

heh
it was for 1.9 anyway :slight_smile:

let’s see
require ‘socket’
class Fixnum
def ord
self
end
end

the code above

Socket.get_host_ip