Wow guys ;-) Thanks for all these advices. I'll test them and report any progress.
2010/7/7 Bjørn Ruberg <[email protected]> > On 07/07/2010 12:10 AM, zabrane Mikael wrote: > >> Hi List, >> >> I'm new to Varnish, so please apologize if the question was already asked >> before. >> >> I've a homemade web server running on my intranet. It works like this: >> >> 1. If an HTTP request arrives without a special header "X-RAWDATA: ...", >> this web server forward the request to the live Web, get the response, and >> send it back (i.e it plays a role of a basic proxy). >> 2. Now, if a request contains the special header "X-RAWDATA: ...", then >> the web server will search the response in >> its internal database (complex computations), and send it back. >> >> Point 2 works very very well. But not point 1 as my web server isn't a >> true HTTP proxy. >> >> So, my question is simple: >> Could I tell Varnish to inspect the HTTP headers, and decide: >> >> a. If the special header "X-RAWDATA: ..." doesn't exists, let the request >> go to the live Web directly. >> b. Otherwise, forward the request to my web server. >> >> > Varnish won't be able to search random, arbitrary web sites as you will > need to predefine all backend. Each external web server will need to be > defined as its own backend. If the live web requests are limited to a fixed > number of external sites, you may define each of them in the VCL. > > If that is not the case, an elegant solution for your live web requests may > be installing a regular proxy and define that as one backend; see > http://ingvar.blog.linpro.no/2010/05/26/accelerating-the-internet-or-actually-squid-with-varnish/for > inspiration and details :-) > > Then, as others have also explained, you'll define two backends - one > towards the regular proxy (e.g. Squid) and one towards your web server - and > then make a VCL rule to define the backend based on whether the "X-RAWDATA" > header is present or not. > > -- > Bjørn > > > _______________________________________________ > varnish-misc mailing list > [email protected] > http://lists.varnish-cache.org/mailman/listinfo/varnish-misc > -- Regards Zabrane
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