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Chapter 5. Oracle HTTP Server
The Oracle HTTP Server acts as the web server
or listener for Oracle Application Server. Based on
the Open Source Apache Web Server (Version 1.3 code
base), the Oracle HTTP Server is the heart of Oracle Application
Server, directing requests to the appropriate source for the
requests. Requests for both static and dynamic content are processed
through the Oracle HTTP Server. Static content is served from the
local file system, while the Oracle HTTP Server redirects dynamic
content requests to the appropriate executable resource.Oracle isn't the first organization to use Apache as
the web server component of their application server. Several others
have also used Apache. So why is Apache such an attractive choice for
a web server?Apache has an extremely flexible architecture; most of its
functionality is provided by a set of plugged-in modules, or
mods. You can add any desired
functionality to Apache by creating an appropriate module. Oracle has
created several custom mods for Oracle Application Server, as
we'll discuss later in this chapter.Apache has a very flexible configuration system. Directives specified
in a set of text-based configuration files are used to load any
desired module and have it process requests using a variety of
methodsfor example, by location, file type, or other
indicators.Largely because of its large installed base (more than 64% of all
Internet web sites at the time of this writing), Apache has become a
very stable and secure web server. Combine this with the ability to
leverage a large existing Apache administrator workforce, and it
makes sense to use Apache's existing code base as a
basis for the Oracle HTTP Server.
This chapter delves into the workings of the Oracle HTTP Server. It
starts with an overview of the Apache architecture. Next, it covers
the modules Oracle bundles with the Oracle HTTP Server that
aren't part of a standard Apache distribution. It
touches on how security and management services hook into the Oracle
HTTP Server, and it finishes up with a look at integrating
third-party listeners with the Oracle HTTP Server.
