needRegistration callback

index.js

@@ -50,6 +50,10 @@ module.exports.create = function (letsencrypt, defaults, options) {
     return copy;
   }
 
+  function isCurrent(cache) {
+    return cache;
+  }
+
   function sniCallback(hostname, cb) {
     var args = merge({});
     args.domains = [hostname];
@@ -59,6 +63,9 @@ module.exports.create = function (letsencrypt, defaults, options) {
         return;
       }
 
+      function respond(c2) {
+        cache = c2 || cache;
+
         if (!cache.context) {
           cache.context = tls.createSecureContext({
             key: cache.key    // privkey.pem
@@ -68,6 +75,14 @@ module.exports.create = function (letsencrypt, defaults, options) {
         }
         
         cb(null, cache.context);
+      }
+
+      if (isCurrent(cache)) {
+        respond();
+        return;
+      }
+
+      defaults.needsRegistration(hostname, respond);
     });
   }