set 2s timeout for dns reverse lookups

Author: awick

wiseService/source.reversedns.js

@@ -20,7 +20,7 @@
 const Dns = require('dns');
 const iptrie = require('iptrie');
 const WISESource = require('./wiseSource.js');
-let resolver = Dns;
+let resolver;
 
 // ----------------------------------------------------------------------------
 function removeArray (arr, value) {
@@ -38,8 +38,8 @@ class ReverseDNSSource extends WISESource {
     this.field = api.getConfig('reversedns', 'field');
     this.ips = api.getConfig('reversedns', 'ips');
     this.servers = api.getConfig('reversedns', 'servers');
+    resolver = new Dns.Resolver({ timeout: 2000 });
     if (this.servers !== undefined) {
-      resolver = new Dns();
       resolver.setServers(this.servers.split(';'));
     }
     this.stripDomains = removeArray(api.getConfig('reversedns', 'stripDomains', '').split(';').map(item => item.trim()), '');

wiseService/wiseService.js

@@ -1481,7 +1481,6 @@ function createRedisClient (url, section) {
       process.exit(1);
     }
 
-    // const options = { sentinels: [t: match[5], port: match[7] || 26379 }], name: match[8], db: parseInt(match[9]) };
     const options = { sentinels: [], name: match[6], db: parseInt(match[7]) };
     match[5].split(',').forEach((hp) => {
       const hostport = hp.split(':');