func (s *Server) checkCache(r *http.Request, f *storage.File) (cont bool, status int) {
// Check etag
if s.conf.ETagSupport {
if ifNoneMatch := r.Header.Get("If-None-Match"); ifNoneMatch != "" {
if ifNoneMatch == f.ETag() {
status = http.StatusNotModified
return
}
}
}
// Check if modified
if tm, err := time.Parse(http.TimeFormat, r.Header.Get("If-Modified-Since")); err == nil && f.Time.Before(tm.Add(1*time.Second)) {
status = http.StatusNotModified
return
}
cont = true
status = http.StatusOK
return
}
