require 'rubygems'
require 'net/ssh/multi'
require 'socket'


HOSTLIST = ['1.2.3.4','127.0.0.1','128.0.0.1']
USERLIST = ['user','user']
PASSWORD = ['userpegase','userpegase']


Net::SSH::Multi.start do |session|

  HOSTLIST.each_with_index do |session_server,index|
    begin
      session.use session_server , :user =>  USERLIST[index] , :password => PASSWORD[index], :timeout => 2
      session.exec 'pwd' do |ch, stream, data|
        puts "[#{ch[session]} : #{stream}] - #{data}"
      end
    rescue Timeout::Error
     puts "+++++++ Timed out"
    rescue Net::SSH::ConnectionTimeout
     puts "+++++++ Timed out"
    rescue Errno::EHOSTUNREACH
     puts "+++++++ Host unreachable"
    rescue Errno::ECONNREFUSED
     puts "+++++++ Connection refused"
    rescue Net::SSH::AuthenticationFailed
     puts "+++++++ Authentification failure "
    rescue SocketError
     puts "Got socket error: #"
    end
  end

  session.loop

end