Works with express 3.1.x.

lib/acequia.js

@@ -38,6 +38,7 @@ function AcequiaServer(options) {
         , tcpPort: 9092
         , timeout: 600000
         , express_app: null
+        , httpServer: null
         , minify_client: true
         , enableDiscovery: true
     }, options || {});
@@ -254,17 +255,22 @@ AcequiaServer.prototype.createTCPServer = function () {
  */
 AcequiaServer.prototype.createWSServer = function () {
     var clientCode, io, app;
-    
+
     if (!clientCode) {
         // Generate the client code
         clientCode = require("./genclient").generateClientCode();
     }
 
     if (!this.options.express_app) {
-        this.options.express_app = express.createServer();
-        this.options.express_app.listen(this.options.wsPort);
-    }    
+        this.options.express_app = express();
+        // this.options.express_app.listen(this.options.wsPort);
+    }
+    if (!this.options.httpServer) {
+        this.options.httpServer = http.createServer(this.options.express_app);
+        this.options.httpServer.listen(this.options.wsPort);
+    }
     app = this.options.express_app;
+    httpServer = this.options.httpServer;
 
     // Add the acequiaServer instance to the web app, so it has acess to its
     // options
@@ -318,7 +324,7 @@ AcequiaServer.prototype.createWSServer = function () {
         logger.debug(" WS Server is listening on [%s:%s]", this.address().address, this.address().port); 
     });
 
-    io = require('socket.io').listen(app);
+    io = require('socket.io').listen(httpServer);
 
     io.configure(function () {
         io.enable('browser client minification');  // send minified client

package.json

@@ -8,7 +8,7 @@
 , "engines": { "node": ">=0.6" }
 , "dependencies" : 
   { "log4js" : ">=0.4.1"
-  , "express": "2.5.9"
+  , "express": "3.1.x"
   , "socket.io": ">=0.9.6"
   , "socket.io-client":">=0.9.6"
   , "uglify-js": ">=1.2.5"