Re: Resuming interrupted download from http-site
At 10:32 AM 6/10/97 -0600, Rick Macdonald wrote:
>Dirk Herr-Hoyman wrote:
>>
>> At 03:45 AM 6/10/97 -0500, Rob Browning wrote:
>> >Johann Spies <jhspies@alpha.futurenet.co.za> 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.
>
There is a "partial GET" in HTTP 1.1, which would do this operation.
Again, I can't vouch for how well it is implemented currently.
--
Dirk Herr-Hoyman <hoymand@danenet.wicip.org>
DANEnet, Connecting Dane County's Communities
http://danenet.wicip.org
--
TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to
debian-user-request@lists.debian.org .
Trouble? e-mail to templin@bucknell.edu .
Reply to: