How to fetch Cookie from response

Hi,
I’m trying to write a program which will try to login to my web site
by passing user & password. The site is in ASP.net for which I’m trying
to authenticate.

Somehow, I’m having problem with fetching cookies from the response &
passing it to next request.

Can you please tell me how to retrieve cookies from response in ruby?
I do not want to extract just set-cookie as I tried that & its not
working. Some how its not giving me complete cookie & hence I’m getting
back the login page itself.

Here is the code snippet

      servicehost = Config::ADMIN_HOST
      serviceport = Config::ADMIN_PORT
      accountname = Config::ADMIN_ACCOUNT_NAME
      accountpwd = Config::ADMIN_ACCOUNT_PWD
      monitorid = Config::USER_AGENT
      loginpage = Config::ADMIN_LOGINPAGE

      http = Net::HTTP.new(servicehost, serviceport)
      http.use_ssl = false
      http.verify_mode = OpenSSL::SSL::VERIFY_NONE
      http.start do |http|

  request1 = Net::HTTP::Get.new(loginpage, {"User-Agent" => monitorid})
  response1 = http.request(request1)
  puts "1st Code = #{response1.code}"

  location = response1.response['location']
  puts "location=#{location}"

  request1 = Net::HTTP::Get.new(location, {"User-Agent" => monitorid})
  response1 = http.request(request1)

  puts "2nd Code = #{response1.code}"
  puts "2nd cookie= #{response1.response['set-cookie']}"

  /__VIEWSTATE" value="(.*)"/.match(response1.body)
  viewstate = $1

  /WebForm_Do(.*)"/.match(response1.body)
  eventvalidation = $1
  eventvalidation = URI.escape(eventvalidation)

  puts eventvalidation

        req = Net::HTTP::Post.new(location, {"User-Agent" => monitorid,
'Content-Type' => 'application/x-www-form-urlencoded'})

        req.set_form_data({'txtLogin_LoginPage'=>accountname,
'txtPassword_LoginPage'=>accountpwd, 'btnLogin'=>'Login',
'__EVENTTARGET'=>'', '__EVENTARGUMENT'=>'',
'__EVENTVALIDATION'=>eventvalidation, '__VIEWSTATE'=>viewstate})

        response = http.request(req)

        redirect = false
        case response
          when Net::HTTPSuccess
            #puts "OK"
          when Net::HTTPRedirection
            redirect = true
          else
            inerror = true
        end

        puts "3rd Code = #{response.code}"
        puts "Message = #{response.message}"

        response.each {|key, val| printf "%s= %s\n", key, val }
        resp = response.body

        if redirect
          request = Net::HTTP::Get.new(loginpage, {"User-Agent" =>
monitorid})

      # Below line some how does not work. Can some one provide cookie
container object code?
          request.add_field 'Cookie', response.response['set-cookie']

          response = http.request(request)
          resp = response.body
          print resp
        end
      end

You probably want to look at the Mechanize gem instead. It’ll be much
easier than working with Net::HTTP, which is a pain. Also, it handles
cookies automatically. Go to this link:
http://mechanize.rubyforge.org/mechanize/README_rdoc.html

  • Ehsan

Hi Ehsan,
Thanks for the reply. But would you be able to assist me using
NET/HTTP, since we are not allowed to use any other plugin.

Thanks!

Ehsanul H. wrote:

You probably want to look at the Mechanize gem instead. It’ll be much
easier than working with Net::HTTP, which is a pain. Also, it handles
cookies automatically. Go to this link:
http://mechanize.rubyforge.org/mechanize/README_rdoc.html

  • Ehsan

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