动态创建一堆URL的动态zip

I am trying to create a zip file of any size on the fly. The source of the zip archive is a bunch of URLs and could be potentially large (500 4MB JPGs in the list). I want to be able to do everything inside the request and have the download start right away and have the zip created and streamed as it is built. It should not have to reside in memory or on disk on the server.I am trying to create a zip file of any size on