\label{Guts_Apache_Modules}
\begin{figure}
\begin{lyxcode}
PerlAccessHandler~~~~~~~Apache::lonacc
PerlHeaderParserHandler~Apache::lonrep
ErrorDocument~~~~~403~/adm/login
ErrorDocument~~~~~404~/adm/notfound.html
ErrorDocument~~~~~406~/adm/roles
ErrorDocument~~~~~500~/adm/errorhandler
PerlAccessHandler~Apache::loncacc
SetHandler~~~~~~~~perl-script
PerlHandler~~~~~~~Apache::lonconstruct
ErrorDocument~~~~~403~/adm/login
ErrorDocument~~~~~404~/adm/notfound.html
ErrorDocument~~~~~406~/adm/unauthorized.html
ErrorDocument~~~~~500~/adm/errorhandler
\end{lyxcode}
\caption{\label{loncapa_apache.conf example}\texttt{loncapa\_apache.conf}
example snippet}
\end{figure}
Which chain of handler deals with which kind of resource is defined
in \texttt{/etc/httdp/conf/loncapa\_apache.conf}. LON-CAPA only defines
handlers at the header-parser, access control, and response phase
(figure 3-3 Eagle book). In the header-parser phase, the replication
handler is run, and in the access-control phase, the various access-handlers.
Future handlers will mostly be implemented in the response phase.
Fig. \ref{loncapa_apache.conf example} shows excerpts of the configuration
script \texttt{/etc/httpd/loncapa\_apache.conf} for these modules.