/**
* Implements condition GET rules for HTTP/1.1 specification. This function
* inspects the client headers and determines if the response fulfills
* the requirements specified.
* @param r The current request
* @return 1 if the response fulfills the condition GET rules, 0 otherwise
* @deffunc int ap_meets_conditions(request_rec *r)
*/
AP_DECLARE(int) ap_meets_conditions(request_rec *r);


The @return value seems to be totally bogus, the function returns OK (0) if the conditions were met (not 1), otherwise it returns either of these two:

#define HTTP_PRECONDITION_FAILED           412
#define HTTP_NOT_MODIFIED                  304

though since other constants may be returned later should the doc be something like the following:

* @return OK if the response fulfills the condition GET rules, some other status code otherwise

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