UPai Cloud UA Test

ua_test.rb

#!/usr/bin/env ruby

require "open-uri"

pic = "http://xxxx.b0.upaiyun.com/1/attachments/ZWg3nr1E.jpg"

open("test_no_ua.jpg", "w+") do |f|
  begin
    f.write(open(pic).read)
  rescue Exception => e
    print "No ua:"
    puts e.message
  end
end

open("test.jpg", "w+") do |f|
  begin
    f.write(open(pic, {"user-agent" => "This is iPhone client"}).read)
  rescue Exception => e
    print "With ua:"
    puts e.message
  end
end