> I'm trying to set up ColdFusion 9 in distributed mode (again, on some other > servers). As soon as I add the jrun_iis6_wildcard.dll ISAPI filter, a call > to an HTML file will fail. As soon as I remove the filter, it succeeds. > > I thought that .html and .htm files were not served by a filter but directly > by IIS. Is this indicative of a misconfiguration within IIS, or what's going > on here?
It's more complicated than that. When you install an ISAPI filter, all traffic is processed by that filter. The filter does whatever it's supposed to do, then forwards the request to the next stage of the IIS processing pipeline if there's anything left to do. My understanding is that Apache modules basically work the same way. In the case of CF, the request is received by IIS, sent to the ISAPI filter, which passes the request to CF. CF looks at the URL patterns it has defined in web.xml. It then processes the request if it matches one of the URL patterns, or returns the request to the ISAPI filter if it doesn't. There is a tiny bit of overhead from all this request passing, which is why some high-availability environments (like the Macromedia site and presumably now the Adobe site) use a non-standard context root (something other than "/") for CF. By using a non-standard context root, the filter can be limited to a specific predetermined URL pattern, like "/cfusion". None of this actually solves your problem, but it might explain why you're having that problem. Finally, I hate to say this, but I'd recommended using a reverse proxy instead of distributed mode, which I've always found kind of fragile and problematic. Using a reverse proxy gets you the same benefits (the ability to isolate CF from your public interface, the ability to segment serving static files from dynamic ones) but doesn't rely on anything built into CF/JRun. We have a few high-availability clients using a reverse proxy, typically on public-facing Apache on Unix servers, sending requests to isolated CF/IIS servers internally, and this works pretty well. Of course, it's probably too late to rethink your architecture at this point. Dave Watts, CTO, Fig Leaf Software http://www.figleaf.com/ http://training.figleaf.com/ Fig Leaf Software is a Veteran-Owned Small Business (VOSB) on GSA Schedule, and provides the highest caliber vendor-authorized instruction at our training centers, online, or onsi ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology-Michael-Dinowitz/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:335210 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
