On Tue, Apr 13, 2010 at 4:50 PM, Florian S. <flo.sch@xxxxxxx> wrote: > Am Dienstag, den 13.04.2010, 10:34 -0400 schrieb Brian Mearns: >> I'd like to use stronger and correlated ETag, namely the hash of the >> content being served. Obviously it's a drag to do this in-line, so I'm >> planning an automated task to generate the ETag values and store them >> on the server. Is there any way I can get httpd to grab these stored >> values for use in the Etag header? I'm flexible on how I store them: >> in a database, in one large file, each in its own file named according >> to the resource, etc. >> >> Any ideas? >> >> Thanks, >> -Brian >> > > Hi, > > Here a short presentation of how I would face this problem: > I found a nice & powerful way of including external scripts depending on > URL/I: RewriteMap. I think its performance is sufficient, since the > process gets spawned only once and the stdio-stuff happens only. > Text-Databases are supported, too. The output (the ETag?) could be > stored in a Envar with a corresponding RewriteRule (E-flag). Then you > can do a few checks and/or use 'Header set ETag new_tag env=new_tag' or > something similiar. > > Not tested at all & sounds strange, but may be a starting point. > > Regards: > Florian > [snip] Thanks, Florian. That's a pretty clever idea, definitely something I'll add to my bag of tricks. I don't think it will help me in this case, though, as it occurs to me that just setting the ETag header isn't enough, I have to get Apache to act on it (honor conditional requests). It sounds like the only real Apache solution is to create a module to do what I want, but that's probably not going to happen anytime soon. In the mean time, I probably will just throw together a PHP script through which all the appropriate resources are accessed. It can read the Etags from the file/database and decide what to do with conditional responses. Thanks for the great idea! -Brian -- Feel free to contact me using PGP Encryption: Key Id: 0x3AA70848 Available from: http://keys.gnupg.net --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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