+ $aBucketKeys = array();
+
+ if (isset($_SERVER["HTTP_REFERER"])) $aBucketKeys[] = str_replace('www.','',strtolower(parse_url($_SERVER["HTTP_REFERER"], PHP_URL_HOST)));
+ if (isset($_SERVER["REMOTE_ADDR"])) $aBucketKeys[] = $_SERVER["REMOTE_ADDR"];
+ if (isset($_GET["email"])) $aBucketKeys[] = $_GET["email"];
+
+ $fBucketVal = doBucket($aBucketKeys,
+ (defined('CONST_ConnectionBucket_PageType')?constant('CONST_ConnectionBucket_Cost_'.CONST_ConnectionBucket_PageType):1) + user_busy_cost(),
+ CONST_ConnectionBucket_LeakRate, CONST_ConnectionBucket_BlockLimit);
+
+ if ($fBucketVal > CONST_ConnectionBucket_WaitLimit && $fBucketVal < CONST_ConnectionBucket_BlockLimit)
+ {
+ $m = getBucketMemcache();
+ $iCurrentSleeping = $m->increment('sleepCounter');
+ if (false === $iCurrentSleeping)
+ {
+ $m->add('sleepCounter', 0);
+ $iCurrentSleeping = $m->increment('sleepCounter');
+ }
+ if ($iCurrentSleeping >= CONST_ConnectionBucket_MaxSleeping || isBucketSleeping($aBucketKeys))
+ {
+ // Too many threads sleeping already. This becomes a hard block.
+ $fBucketVal = doBucket($aBucketKeys, CONST_ConnectionBucket_BlockLimit, CONST_ConnectionBucket_LeakRate, CONST_ConnectionBucket_BlockLimit);
+ }
+ else
+ {
+ setBucketSleeping($aBucketKeys, true);
+ sleep(($fBucketVal - CONST_ConnectionBucket_WaitLimit)/CONST_ConnectionBucket_LeakRate);
+ $fBucketVal = doBucket($aBucketKeys, CONST_ConnectionBucket_LeakRate, CONST_ConnectionBucket_LeakRate, CONST_ConnectionBucket_BlockLimit);
+ setBucketSleeping($aBucketKeys, false);
+ }
+ $m->decrement('sleepCounter');
+ }
+
+ if (strpos(CONST_BlockedIPs, ','.$_SERVER["REMOTE_ADDR"].',') !== false || $fBucketVal >= CONST_ConnectionBucket_BlockLimit)