How to get client IP and Server IP using Rails

From your controller:

request.remote_ip

If you are using apache in front of a mongrel, then remote_ip will return the source address of the request, which in this case will be local host because the Apache web server is making the request, so instead put this in your controller:

@remote_ip = request.env["HTTP_X_FORWARDED_FOR"]

To get the server IP see:

Getting the Hostname or IP in Ruby on Rails

Thanks: karim79 and Titanous.

Write the code in Controller

For Client IP:

request.remote_ip

@remote_ip = request.env["HTTP_X_FORWARDED_FOR"]

For Server IP:

require 'socket'

def local_ip
  orig, Socket.do_not_reverse_lookup = Socket.do_not_reverse_lookup, true  # turn off reverse DNS resolution temporarily

  UDPSocket.open do |s|
    s.connect '64.233.187.99', 1
    s.addr.last
  end
ensure
  Socket.do_not_reverse_lookup = orig
end