Re: Resuming interrupted download from http-site
Rick Macdonald wrote:
> Dirk Herr-Hoyman wrote:
> > At 03:45 AM 6/10/97 -0500, Rob Browning wrote:
> > >Johann Spies <firstname.lastname@example.org> writes:
> > >
> > >> I know ftp reget can resume an interrupted download of a large file. How
> > >> do you do it from a http-site?
> > >
> > >I think, but I'm not sure, that wget will do what you want. See "man
> > >wget" for more details.
> > http is a stateless protocol whereas ftp does maintain state. It's hard to
> > deal with an interruptted transfer without state. This is similar to what
> > NFS does to maintain a connection in the face of the server, say,
> > rebooting. While not completely inconceivable to maintain state with
> > http, which is what cookies do, this would be difficult.
> Hmmm, doesn't zmodem resume a download by simply asking that the file
> xfer start at a certain file offset, which is simply the size of the
> partially downloaded file? Then it just appends to the file. I thought
> some FTP implementations were doing this already.
yes, ftp -c
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