get local or some city's time

get_time.rb

require 'gserver'
require 'socket'
require 'google_timezone'
require 'geokit'
require 'timezone'

class TimeServer < GServer
  def initialize(port=3000, *args)
    super(port, *args)
  end
  def serve(io)
    begin
      io.puts "Hey, dude, which city's time you want to know?"
      line = io.gets
      if line =~ /time/
        io.puts "----------------------------"
        io.puts "Here your answer, muchacho"
        io.puts "----------------------------"
        io.puts get_time(line)
      elsif line =~ /quit/
        self.stop
      end
    rescue Exception => e
      io.puts "----------------------------"
      io.puts "There is some errors:"
      io.puts e
      io.puts "----------------------------"
      self.stop
    end
  end

  private

  def get_time(line)
    request = line.split(' ')[1]
    cities = get_cities(request)
    time = {}
    time['here'] = Time.now
    if cities.any?
      cities.each do |city|
        time[city] = time_in_city(city)
      end
    end
    return time
  end

  def get_cities(string)
    cities_array = []
    if string.index("?")
      valid_string = string[string.index("?")+1, string.length-1]
      unless valid_string.empty?
        cities_string = valid_string.gsub('%20', ' ')
        cities_array = cities_string.split(',') if cities_string
      end
    end
    return cities_array
  end

  def time_in_city(city)
    begin
      coordinates = Geokit::Geocoders::GoogleGeocoder.geocode("#{city}")
      time_zone_id = GoogleTimezone.fetch(coordinates.latitude, 
                                          coordinates.longitude).time_zone_id
      time_zone = Timezone["#{time_zone_id}"]
      return time_zone.utc_to_local(Time.now) if time_zone.valid?
    rescue Exception => e
      return 'wrong city name'
    end
  end
end

server = TimeServer.new
server.audit = true
server.start

server.join