On Tue, Nov 17, 2020 at 04:51:50PM -0500, Keith Moore wrote: > On 11/17/20 4:32 PM, Adam Roach wrote: > > > > > It could be tuned up a bit by asking the tools team to turn > > "Last-Modified"/"If-Modified-Since" header handling on for > > https://www.ietf.org/ (which would make the command above act > > substantially more like rsync). > > Last-Modified (at least) should be regarded as absolutely essential. Again, > these dates are sometimes important for patent litigation purposes. > > (It would be worth keeping FTP for that reason alone if the HTTP server > doesn't support Last-Modified) Whether those dates are returned by http or ftp, they're going to be trivially foreable, and I suspect that for the purposes of patent litigation, things like the Internet Archive and other mechanisms such as personal e-mail archives plus the sworn testimony from owner of said e-mail archive. - Ted