add req limiter blacklist

@@ -27,6 +27,7 @@ module.exports = (req, res, next) => {
 
     if (remoteIp.indexOf(',') > 0) {
         let arr = remoteIp.split(',');
+
         remoteIp = arr[0];
     }
 
@@ -59,18 +60,18 @@ module.exports = (req, res, next) => {
                     res.status(403).end();
                 } else {
                     cache.incrAsync(key, 1); // qps + 1
-                    next();
+                    return next();
                 }
             } else {
                 cache.setAsync(key, 1, 60);  // 设置key，1s失效
-                next();
+                return next();
             }
         }).catch(e => {
             logger.error(`request limiter get key[${key}] from cache error.`, e);
-            next();
+            return next();
         });
     } else {
-        next();
+        return next();
     }