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When it receives a request, the TapestryFilter obtains the HttpServletRequestHandler service, and invokes its service() method.
From Tapestry 5.7.0 on, you can use TapestryFilter from org.apache.tapestry5.http instead of org.apache.tapestry5 if you want to use Tapestry's request processing framework (tapestry-http package) without the page framework (which is in tapestry-core).
HttpServletRequestHandler Pipeline
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The MasterDispatcher service is a chain-of-command, aggregating together (in a specific order), several Dispatcher objects. Each Dispatcher is built to recognize and process a particular kind of URL.
The dispatchers below are not present if you're using tapestry-http without tapestry-core.
RootPath Dispatcher
The RootPath Dispatcher recognizes a request for the application root (i.e., "/") and handles this the same as a render request for the "Start" page. Support for the Start page is kept for legacy purposes. Index pages are the correct approach.
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