This policy allows you to delay the use of an HTTP source in a background download that is allowed to use P2P.
After the max delay has reached, the download will resume using HTTP, either downloading the entire payload or complementing the bytes that could not be downloaded from Peers.
Note that a download that is waiting for peer sources, will appear to be stuck for the end user.
The recommended value is 1 hour (3600).
The default value is 0 (no delay)