Making multiple HTTP requests asynchronously

Question

require \'net/http\'

urls = [
  {\'link\' => \'http://www.google.com/\'},
  {\'link\' => \'http://www.yandex.ru/\'},
  {\'link\' => \'http://www.baidu.com/\'}
]

ur         


        

Answer 1

Here's an example using threads.

require 'net/http'

urls = [
  {'link' => 'http://www.google.com/'},
  {'link' => 'http://www.yandex.ru/'},
  {'link' => 'http://www.baidu.com/'}
]

urls.each do |u|
  Thread.new do
    u['content'] = Net::HTTP.get( URI.parse(u['link']) )
    puts "Successfully requested #{u['link']}"

    if urls.all? {|u| u.has_key?("content") }
      puts "Fetched all urls!"
      exit
    end
  end
end

sleep

Answer 2

It depends what you want to do after the function afterwards. You can do it with simple threads:

see: http://snipplr.com/view/3966/simple-example-of-threading-in-ruby/