Anyone get SPP to work with PXE using HTTP?

I have the latest SPP (2015.10.0) and am currently using PXE to patch servers. I mount the iso using NFS. However, NFS is frowned upon in this organization and I want to move it to load the iso using http.

Looking at the initrd.img file I was able to see the mount_fs.sh command does support http. I just don't know what options to set up in my PXE append line to leverage http. Has anyone figured out how to make http work yet (what does media=cloud do)?

Thanks,

Scott