CODEWITHSUNDEEP
node.js
Robert Hurst
Robert Hurst

Reputation: 9092

Serving a client side a component for my node module with a special file path

I'm building a NodeJS game engine. When the user creates an instance of the engine they must pass it an existing http server. The engine then attaches a socket server for updating the client side views.

What I'd like to do is serve a single JavaScript file at a special url that bridges the client side and allows the engine to setup its own sockets and provide the web page with a viewport and control binding api.

Is there anyway to add a request handler to an existing http server that can serve a single javascript based on the url?

I've tried this

function bindCoreFileServe(httpServer) {

    //create a server

    httpServer.on('request', function(req, res) {

        //check the url
        if(req.url === '/SliverJet.js') {

            //send the datafunction (req, res) {
            res.writeHead(200, {'Content-Type': 'text/plain'});
            res.end('Hello World\n');

        }
    });
}

But it crashes node because the existing server also tries to send its own headers.

Thanks.

Upvotes: 1

Views: 208

Answers (3)

Travis
Travis

Reputation: 12379

The solution that worked for me looks like this:

function bindFileCoreServer (httpServer) {
  httpServer.addListener('request', function (req, res) {
    if (req.url === '/SliverJet.js') {
      res.writeHead(200, {'Content-Type': 'text/javascript'});
      res.end('//Hello world!');
    }
  });
};

This is much simpler than storing the request listeners, replacing them, and then calling them in a loop if needed.

Upvotes: 0

Robert Hurst
Robert Hurst

Reputation: 9092

I figured this out via the source of socket.io. Essentially I detach all of the event listeners from the httpServer and store them in an array then I bind my own listener to it. If the url doesn't belong to me I execute all of the detached event listeners with their call method passing it the httpServer as the scope.

Upvotes: 1

alessioalex
alessioalex

Reputation: 63653

I don't think you can achieve that (attach 2 request handlers on the httpServer), but I suggest you take a different approach on this one.

For example, store all those URLs into the database and check for them using a wildcard, like so (this is for Express, but you get the idea):

app.get('/:db_url', function(req, res) {
  get_url_from_database(req.params.db_url, function (url, error) {
    if (error) { throw error; }
    else {
      // do things
    }
  });
});

Upvotes: 0

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