Hi Jason. Docwilco from Fastly has written an URL encoder/decorder VMOD that you can use. You could run it through it twice or patch it do uppcase/lowercase the encoding.
https://www.varnish-cache.org/vmod/url-code Varnish itself doesn't try to interpret the URL much. Per. On Mon, Apr 7, 2014 at 11:01 AM, Jason Woods <[email protected]> wrote: > Hi all, > > I apologise if this is the wrong place for a general question / request > for advice about Varnish. If there's a better place, please do let me know! > > I have a URL (that I've modified) that has an url encoded sequence, e.g. > /block/jason%E2%80%99s-first-blog > That sequence is a fancy apostrophe. It must have snuck into the title > through a copy and paste or something, but it brought up some caching issue > with the encoding. > > We notice that when we printed the URL links in HTML, it was printed as > above, %E2%80%99. But when some browsers appear to request the URL, it > seems to lowercase the encoding to %e2%80%99. So we ended up with two > instances of this page cached. Presumedly the browser decoded the URL and > then re-encoded it for the request. > This meant that when we modified the blog post we sent a PURGE for > %E2%80%99 - but it only updated one instance of the cache, and there were > many people seeing the old version. We ended up having to manually PURGE > the other cache. > > Would I be right in saying that the following two URL are identical, and > should have one instance of cache? I'm not sure if this is accounted for in > RFC/ISO of anything. URLs are generally case-sensitive IIRC but is it true > also for encodings? > /block/jason%E2%80%99s-first-blog > /block/jason%e2%80%99s-first-blog > > Is there a way for Varnish to decode the URL before hashing for the cache? > Or is there a better approach? > We are using varnish-3.0.3 revision 9e6a70f, which may be quite old, maybe > this is fixed in a recent version? > > Thanks! > > Jason > > > _______________________________________________ > varnish-misc mailing list > [email protected] > https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc > -- <http://www.varnish-software.com/> *Per Buer* CTO | Varnish Software Phone: +47 958 39 117 | Skype: per.buer We Make Websites Fly! Winner of the Red Herring Top 100 Global Award 2013
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