* the other callback

.gitignore

@@ -1,3 +1,4 @@
+*.pem
 letsencrypt.work
 letsencrypt.logs
 letsencrypt.config

node.js

@@ -416,6 +416,14 @@ ACME._postChallenge = function (me, options, identifier, ch) {
       if (1 === options.setChallenge.length) {
         options.setChallenge(auth).then(testChallenge).then(resolve, reject);
       } else if (2 === options.setChallenge.length) {
+        options.setChallenge(auth, function (err) {
+          if(err) {
+            reject(err);
+          } else {
+            testChallenge().then(resolve, reject);
+          }
+        });
+      } else {
         var challengeCb = function(err) {
           if(err) {
             reject(err);
@@ -426,15 +434,7 @@ ACME._postChallenge = function (me, options, identifier, ch) {
         Object.keys(auth).forEach(function (key) {
           challengeCb[key] = auth[key];
         });
-        options.setChallenge(auth, challengeCb);
-      } else {
-        options.setChallenge(identifier.value, ch.token, keyAuthorization, function(err) {
-          if(err) {
-            reject(err);
-          } else {
-            testChallenge().then(resolve, reject);
-          }
-        });
+        options.setChallenge(identifier.value, ch.token, keyAuthorization, challengeCb);
       }
     } catch(e) {
       reject(e);

tests/compat.js

@@ -26,7 +26,7 @@ module.exports.run = function (directoryUrl, RSA, web, chType, email, accountKey
           console.log("dig TXT " + pathname + " '" + cb.dnsAuthorization + "'");
           console.log("\nThen hit the 'any' key to continue...");
         } else {
-          cb(new Error("[acme-v2] unrecognized challenge type"));
+          cb(new Error("[acme-v2] unrecognized challenge type: " + cb.type));
           return;
         }