httpauth.rb

require 'rest-client'

RestClient.post('http://www.unitec.edu.ve/servlet/unicodeServlets.Login', {:TID => "usuario", :TClave => "contraseña"}){ |response, request, result, &block|
    if [301, 302, 307].include? response.code
  	  session_cookie = "JSESSIONID=#{response.cookies["JSESSIONID"]}"
  	  puts session_cookie

		  response = RestClient.get 'http://www.unitec.edu.ve/indexestudiante.jsp', {:Cookie => session_cookie}
		  puts response
    else
      response.return!(request, result, &block)
    end
}