Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!aioe.org!eternal-september.org!feeder.eternal-september.org!.POSTED!not-for-mail From: Roger Darlington Newsgroups: comp.sys.acorn.programmer Subject: Re: a program to read/compare the size of files on some websites? Date: Mon, 23 May 2011 07:08:48 +0100 Organization: home Lines: 37 Message-ID: <030cbfd751.rogerarm@rogerarm.freeuk.com> References: <66c1d8d651.rogerarm@rogerarm.freeuk.com> Injection-Info: mx04.eternal-september.org; posting-host="YblbYMTjox5jxacoA79srA"; logging-data="3445"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/6h0yOa2tof8Sz1b2FhSzOh4N6D/Gf7ee4AKCoVbmpIQ==" User-Agent: Messenger-Pro/6.01 (MsgServe/6.00) (RISC-OS/4.39) NewsHound/v1.50-32 X-Editor: EmailEdit 6.00 Cancel-Lock: sha1:ewxWuSiZ2jWctmumH/WnExmGqZY= Xref: x330-a1.tempe.blueboxinc.net comp.sys.acorn.programmer:339 On 22 May 2011, Jeremy Nicoll - news posts wrote: > Roger Darlington wrote: >> But what do you do when the two get out of sync? > Why would they? That's a simple question to answer Jeremy: Human operator error. Mine :-) But because neither FTPc nor SiteMatch operate on a closed-loop feedback system, relying instead on open-loop non-feedback, any error like this will not be corrected. > And even if they do, why can't you just re-upload the files that have > changed on the local copy more recently than the last upload date? Perhaps because missing files not on the website are not the only mis-sync that can happen. Extra files on the website can also be a problem. It would be much better if a closed-loop system could be devised for upload. I know, people say it is impossible because the web has been so badly designed, using different OS's for servers all over the place with differing ways of not feeding date information or size information back. The sooner this situation is rectified, the better. Perhaps the WWW consortium or some other over-seeing body (BSI, ASI?) should set better standards on server OS design? [Some hope... Maybe next century... ] -- Cheers Roger If you start nowhere, you'll finish up in the same place