ExpressJS just [passes your parameters down][1] to the `http` module when you call listen, so your example should work.

Is that not the case?


  [1]: https://github.com/strongloop/express/blob/531f024e486c13eb6d7e2bc0966ea95b1567197a/lib/application.js#L595

    var server = app.listen(3000, &#39;127.0.0.1&#39;,onServerListening);

In this case I want the server to respond only to connections using the 127.0.0.1 host name. Not 0.0.0.0, and not localhost. Only 127.0.0.1.

    app.set(&#39;domain&#39;, &#39;myhost.whatever&#39;);
    app.set(&#39;port&#39;, process.env.PORT || 8080);


Trying to understand vectors a bit more.

What is the need for normalizing a vector?

If I have a vector, N = (x, y, z)

What do you actually get when you normalize it - I get the idea you have to divide x/|N| y/|N| &amp; z/|N|. My question is, why do we do this thing, I mean what do we get out of this equation?

What is the meaning or &#39;inside&#39; purpose of doing this. 

A bit of a maths question, I apologize, but I am really not clear in this topic.

What is the need for normalizing a vector?

I would declare an empty String variable like this:

        string myString = string.Empty;

Is there an equivalent for a &#39;DateTime&#39; variable ?


Update :

The problem is I use this &#39;DateTime&#39; as a parameter for a &#39;StoredProcedure&#39; in SQL.
E.g:

        DateTime? someDate = null;
        myCommand.Parameters.AddWithValue(&quot;@SurgeryDate&quot;, someDate);

When I run this code an exception is catched telling me the &#39;StoredProcedure&#39; expected a &#39;@SurgeryDate&#39; parameter.
But i provided it.
Any idea why?

Set an empty DateTime variable

How can i bind a expressjs server to a specific IP

Something like

    app.listen(8888, &#39;192.168.0.101&#39;);

Equivalent to nodejs:

    http.createServer(onRequest).listen(8888,&#39;192.168.0.101&#39;);

Bind expressjs to a specific IP address

How can i bind a expressjs server to a specific IP
Something like
<pre><code class="hljs language-arduino">app.listen(8888, '192.168.0.101');
</code></pre>
Equivalent to nodejs:
<pre><code class="hljs language-arduino">http.createServer(onRequest).listen(8888,'192.168.0.101');
</code></pre>

I&#39;m sending the following JSON string to my server.

    (
            {
            id = 1;
            name = foo;
        },
            {
            id = 2;
            name = bar;
        }
    )

On the server I have this.


    app.post(&#39;/&#39;, function(request, response) {
    
    	console.log(&quot;Got response: &quot; + response.statusCode);
    
    	response.on(&#39;data&#39;, function(chunk) {
    		queryResponse+=chunk;
    		console.log(&#39;data&#39;);
    	});
    
    	response.on(&#39;end&#39;, function(){
    		console.log(&#39;end&#39;);
    	});
    });

When I send the string, it shows that I got a 200 response, but those other two methods never run. Why is that?

How do I consume the JSON POST data in an Express application

I&#39;m using Mongoose, MongoDB, and Node.

I would like to define a schema where one of its fields is a date\timestamp.

I would like to use this field in order to return all of the records that have been updated in the last 5 minutes.

Due to the fact that in Mongoose I can&#39;t use the Timestamp() method I understand that my only option is to use the following Javascript method: 

    time : { type: Number, default: (new Date()).getTime() } 

It&#39;s probably not the most efficient way for querying a humongous DB. 
I would really appreciate it if someone could share a more efficient way of implementing this.

Is there any way to implement this with Mongoose and be able to use a MongoDB timestamp?

Which SchemaType in Mongoose is Best for Timestamp?

## Background
I am doing some experimentation with Node.js and would like to read a JSON object, either from a text file or a .js file (which is better??) into memory so that I can access that object quickly from code.  I realize that there are things like Mongo, Alfred, etc out there, but that is not what I need right now.

## Question
How do I read a JSON object out of a text or js file and into server memory using JavaScript/Node?

Using Node.JS, how do I read a JSON file into (server) memory?

I have a route that looks like this:

    app.all(&#39;/path/:namedParam/*splat?&#39;,function(req,res,next){
      if(!req.params.length){
        // do something when there is no splat
      } else {
        // do something with splat
      }
    });

however, this doesn&#39;t work - if I call `path/foo/bar` it hits the route, but if I call `path/foo`, it doesn&#39;t.

Is it possible to have an optional splat param, or do I have to use a regex to detect this?

**Edit**:

to be clearer, here are the requirements I&#39;m trying to achieve:

- the first and second params are **required**
- the first param is static, the second is a named param.
- any number of _optional_ additional params can be appended and still hit the route.

Express.js routing: optional splat param?

I&#39;m following the guidance [here](https://stackoverflow.com/questions/9299331/what-is-the-best-practice-to-gracefully-shutdown-a-node-js-program-from-an-exter) (listening for `SIGINT` events) to gracefully shutdown my Windows-8-hosted node.js application in response to &lt;kbd&gt;Ctrl&lt;/kbd&gt;+&lt;kbd&gt;C&lt;/kbd&gt; or server shutdown.

But Windows doesn&#39;t have `SIGINT`.  I also tried `process.on(&#39;exit&#39;)`, but that seems to late to do anything productive.

On Windows, this code gives me: **Error: No such module**

    process.on( &#39;SIGINT&#39;, function() {
      console.log( &quot;\ngracefully shutting down from  SIGINT (Crtl-C)&quot; )
      // wish this worked on Windows
      process.exit( )
    })

On Windows, this code runs, but is **too late to do anything graceful**:

    process.on( &#39;exit&#39;, function() {
      console.log( &quot;never see this log message&quot; )
    })

Is there a `SIGINT` equivalent event on Windows?

What is the Windows equivalent of process.on(&#39;SIGINT&#39;) in node.js?

I have an application that I have behind a reverse proxy, I would like for it to only listen to localhost/127.0.0.1.

I expected this to work:

`app.listen(3001, &#39;localhost&#39;);`

or

`app.listen(3001, &#39;127.0.0.1&#39;);`

...but instead I get an error:

    node.js:201
        throw e; // process.nextTick error, or &#39;error&#39; event on first tick
              ^
    TypeError: Cannot read property &#39;port&#39; of null
        at Object.&lt;anonymous&gt; (/home/ctoledo/hive-go/go.js:204:76)
        at Module._compile (module.js:441:26)
        at Object..js (module.js:459:10)
        at Module.load (module.js:348:31)
        at Function._load (module.js:308:12)
        at Array.0 (module.js:479:10)
        at EventEmitter._tickCallback (node.js:192:40)

Running the application without a specifying the hostname works fine, ie., `app.listen(3001);`.

I am running Node **v0.6.14** and express@**2.5.5** and have read this [google groups discussion][1] and have found [this comment][2] in Express application.js saying: &quot;This method takes the same arguments as node&#39;s `http.Server#listen()`.&quot;

Thanks for any help.


  [1]: https://groups.google.com/group/express-js/browse_thread/thread/6a46488f2a7c3758?pli=1
  [2]: https://github.com/visionmedia/express/blob/master/lib/application.js#L420

How to get Node.JS Express to listen only on localhost?

I want to split up my routes into different files, where one file contains all routes and the other one the corresponding actions. I currently have a solution to achieve this, however I need to make the app-instance global to be able to access it in the actions.
My current setup looks like this:

app.js:

    var express   = require(&#39;express&#39;);
    var app       = express.createServer();
    var routes    = require(&#39;./routes&#39;);

    var controllers = require(&#39;./controllers&#39;);
    routes.setup(app, controllers);

    app.listen(3000, function() {
      console.log(&#39;Application is listening on port 3000&#39;);
    });

routes.js:

    exports.setup = function(app, controllers) {
    
      app.get(&#39;/&#39;, controllers.index);
      app.get(&#39;/posts&#39;, controllers.posts.index);
      app.get(&#39;/posts/:post&#39;, controllers.posts.show);
      // etc.
    
    };

controllers/index.js:

    exports.posts = require(&#39;./posts&#39;);
    
    exports.index = function(req, res) {
      // code
    };

controllers/posts.js:

    exports.index = function(req, res) {
      // code
    };
    
    exports.show = function(req, res) {
      // code
    };

However, this setup has a big issue: I have a database- and an app-instance I need to pass to the actions (controllers/*.js). The only option I could think of, is making both variables global which isn&#39;t really a solution. I want to separate routes from the actions because I have a lot of routes and want them in a central place.

What&#39;s the best way to pass variables to the actions but separate the actions from the routes?

Express: How to pass app-instance to routes from a different file?

I use passport.js to handle auth on my nodejs + express.js application. I setup a LocalStrategy to take users from mongodb

My problems is that **users have to re-authenticate when I restart my node server**. This is a problem as I am actively developing it and don&#39;t wan&#39;t to login at every restart... (+ I use node supervisor)

Here is my app setup :

    app.configure(function(){
        app.use(&#39;/static&#39;, express.static(__dirname + &#39;/static&#39;));
        app.use(express.bodyParser());
        app.use(express.methodOverride());
        app.use(express.cookieParser());
        app.use(express.session({secret:&#39;something&#39;}));
        app.use(passport.initialize());
        app.use(passport.session());
        app.use(app.router);
    });

And session serializing setup :

    passport.serializeUser(function(user, done) {
        done(null, user.email);
    });

    passport.deserializeUser(function(email, done) {
        User.findOne({email:email}, function(err, user) {
            done(err, user);
        });
    });

I tried the solution given on a blog (removed the link as it does not exist any more) using connect-mongodb without success

    app.use(express.session({
        secret:&#39;something else&#39;,
        cookie: {maxAge: 60000 * 60 * 24 * 30}, // 30 days
            store: MongoDBStore({
            db: mongoose.connection.db
        })
    }));

**EDIT** additional problem : only one connection should be made (use of one connexion limited mongohq free service)

**EDIT 2** solution (as an edition as I my reputation is to low to answer my question by now

Here is the solution I finally found, using mongoose initiated connection

    app.use(express.session({
        secret:&#39;awesome unicorns&#39;,
        maxAge: new Date(Date.now() + 3600000),
        store: new MongoStore(
            {db:mongoose.connection.db},
            function(err){
                console.log(err || &#39;connect-mongodb setup ok&#39;);
            })
    }));


Content Type	Original Author	Original Content on Stackoverflow
Question	ReiGarcia	View Question on Stackoverflow
Solution 1 - node.js	Jacob Krall	View Answer on Stackoverflow
Solution 2 - node.js	Rubin bhandari	View Answer on Stackoverflow
Solution 3 - node.js	chovy	View Answer on Stackoverflow

Bind expressjs to a specific IP address

node.js Problem Overview

node.js Solutions

Solution 1 - node.js

Solution 2 - node.js

Solution 3 - node.js

Set an empty DateTime variable

What is the need for normalizing a vector?

Attributions