Is there any way to make sure that when one file is downloaded from the user, a second connection from the same user won't be able to download it again?
It feels like on RETR command we need to keep a map of the file as the key and an object that stores the user and the downloading state of the file. Once the RETR has been completed that entry is updated or removed completely. So an FTPlet extension might work but not sure how to get a handle to the file. Probably could use FTPRequest and parse the argument for RETR which is the file and get the working directory from FileSystemView to construct a unique reference for the file. Is there maybe a simpler way than this? Genti
