The Apache web server on start up iterates through the list of configuration directives and invokes the associated module handler for each directive.


For e.g. if module A has handlers for directives D1 and D2, then the httpd process on start up will invoke the handlers within module A when it encounters D1 and D2 in httpd.conf.


However, what is the best way to find out missing mandatory parameters from within the module. For e.g. if a directive D3 is mandatory for the module to work, then how can the module on initialization guarantee that this configuration parameter is provided?


I do not want to provide a default value for this mandatory configuration directive and also, I do not want to check whether this mandatory directive is defined or not while handling each request.


Thanks in advance,

Best regards,

Raj Iyer