Red Hat DIRECTORY SERVER 2.0 - GATEWAY Instrukcja Użytkownika Pobierz pdf (Strona 35)

Chapter 6. Handling directories

Directory URLs

Some URLs (typically those that end in /) correspond to directories rather than plain

ﬁles. We need to determine how to deal with these.

dir_module

The dir_module module provides the facility of using a default ﬁle (typically called

index.html) in a directory on behalf of the directory itself.

autoindex_module

The autoindex_module module provides the facility of generating a listing of the ﬁles

and subdirectories within a directory.

Combining approaches

We will also consider how to combine the two approaches so that an index.html ﬁle

is used if present and a directory listing is used if not.

A document has a MIME content type. We’ve already seen that the URLs that cor-

respond to ﬁles can now be served with the correct MIME type, so long as the ﬁle’s

name has the appropriate sufﬁx. But what about directories? In particular a “top

level” URL such as http://cheese.dept.cam.ac.uk/ will trigger a request for /.

There’s no such ﬁle so the server can’t serve it yet, let alone determine a MIME con-

tent type for it.

Figure 6-1. / causing problems

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Red Hat DIRECTORY SERVER 2.0 - GATEWAY Instrukcja Użytkownika Strona 35