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From Randy Terbush <ra...@zyzzyva.com>
Subject Re: [DOC] undocumented ContentDigest directive
Date Sun, 24 Aug 1997 22:22:49 GMT
> On Sun, 24 Aug 1997, Lars Eilebrecht wrote:
> 
> > the ContentDigest directive is available since the first versions
> > of Apache, but still undocumented.
> > Attached is a patch to add it to the manual.
> 
> No, only since 1.1 or so. And -1 on adding it to the manual. It's an
> undocumented feature. It was a bit proof-of-content code I added to
> Apache, and was never designed to be used in a real web server. I forget
> why - there's nothing insecure or anything about it - but I think it had to
> do with performance (or lack thereof). Also, I am aware of 0 web browsers
> that make use of it.
> 
> It's only possible use is to make sure a message wasn't truncated in
> transit (since if the message can be changed, so can the hash, and TCP
> has its own mechanisms to prevent data from being corrupted, so that's
> not a concern), but Apache only applies it to files served by the core,
> which all have Content-Length statements anyhow. And HTTP/1.1 provides
> chunking to all other files, anyway.
> 
> So there's really no use for it.
> 
> -- Alexei Kosut <akosut@organic.com>

This issue comes up frequently. Should we remove this module from 
the distribution?





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