+ if (preg_match(CONST_BlockedUserAgents, $_SERVER["HTTP_USER_AGENT"]) > 0)
+ {
+ $fLoadAvg = getLoadAverage();
+ if ($fLoadAvg >= CONST_BlockReverseMaxLoad) {
+ header('HTTP/1.0 403 Forbidden');
+ header('Content-type: text/html; charset=utf-8');
+ echo "<html><body><h1>App temporarily blocked</h1>";
+ echo "Your application has been temporarily blocked from the OpenStreetMap Nominatim ";
+ echo "geolocation service due to high server load.";
+ echo "\n</body></html>\n";
+ exit;
+ }
+
+ }
+
+