changed api to async

Signed-off-by: abbr <[email protected]>

README.md

@@ -32,8 +32,9 @@ app.configure(function () {
     var nodeSSPIObj = new nodeSSPI({
       retrieveGroups: true
     });
-    nodeSSPIObj.authenticate(req, res);
-    res.finished || next();
+    nodeSSPIObj.authenticate(req, res, function(err){
+      res.finished || next();
+    });
   });
   app.use(function (req, res, next) {
     var out = 'Hello ' + req.connection.user + '! You belong to following groups:<br/><ul>';
@@ -102,7 +103,7 @@ The call to `new nodeSSPI(opts)` in above code can take following options:
       *   403 if max login attempts are reached
       *   401 for all in-progress authentications, including protocols that require multiple round trips or if max login attempts has not been reached.
       *   500 when NodeSSPI encountered exception it cannot handle.
-    *  If option `authoritative` is not set to *true*, then response headers and `res.statusCode` will still be populated as described above, but NodeSSPI will not block the request, i.e. it will not call `res.end()`. Also, error message will be returned from calling `nodeSSPIObj.authenticate(req, res);` rather than sending to response. This allows the caller and downstream middleware to make decision.
+    *  If option `authoritative` is not set to *true*, then response headers and `res.statusCode` will still be populated as described above, but NodeSSPI will not block the request, i.e. it will not call `res.end()`. Also, error message will be returned from calling `nodeSSPIObj.authenticate(req, res, cb(err){});` in the *err* callback parameter rather than sending to response. This allows the caller and downstream middleware to make decision.
 
 ## Platforms
 NodeSSPI has been tested working on these Windows platforms:

index.js

@@ -40,7 +40,7 @@ function main(opts) {
   this.opts = opts;
 }
 
-main.prototype.authenticate = function (req, res) {
+main.prototype.authenticate = function (req, res, cb) {
   if (this.opts.perRequestAuth) {
     delete req.connection.user;
   }
@@ -49,14 +49,17 @@ main.prototype.authenticate = function (req, res) {
   } catch (ex) {
     if (this.opts.authoritative) {
       res.end(ex);
+      cb();
       return;
     } else {
-      return ex;
+      cb(ex);
+      return;
     }
   }
   if (this.opts.authoritative && req.connection.user === undefined) {
     res.end();
   }
+  cb();
 }
 
 module.exports = main;

package.json

@@ -1,6 +1,6 @@
 {
   "name": "node-sspi",
-  "version": "0.0.4",
+  "version": "0.1.0",
   "description": "Windows SSPI server-side authentication for Node",
   "main": "index.js",
   "author": "Fred Wen<[email protected]>",