How to download resources after unlock IAP

Hi,
in my game i have about 300MB of resources (image and audio), and 4 IAP, so i would like to download the resources of each unlocked pack, and i have no idea how to doing that with cocos2d-x V3.3 .
Any suggestions are appreciated.
Thanks.

Any suggestions please ?

Can i use cocos2d::extension::CCHttpRequest to doing this ?
please help me :frowning: