support automatic cert creation for IP addresses

Author: andrewagain

lib/ca.js

@@ -213,6 +213,9 @@ CA.prototype.generateServerCertificateKeys = function (hosts, cb) {
   certServer.setExtensions(ServerExtensions.concat([{
     name: 'subjectAltName',
     altNames: hosts.map(function(host) {
+      if (host.match(/^[\d\.]+$/)) {
+        return {type: 7, ip: host};
+      }
       return {type: 2, value: host};
     })
   }]));