server.js

// require modules
var http  = require('http')
  , url   = require('url')
  , path  = require('path');

var pathname
  , parameters  = {};
  
// declare function to run the server
// - parameter: 'route' - function from router module
//   - parameter: the 'handle' object (from index)
function start(route, handle) {
    // declare a function to answer requests to the server
    function onRequest (request, response) {
      pathname = url.parse(request.url).pathname;        
      parameters.format = path.extname(pathname);
      parameters.resource = path.basename(pathname, parameters.format);
        
      console.log('Request received for:"' + parameters.resource + '"; in format: "' + parameters.format + '"');
        
      route(handle, parameters, response, request);
    }
    
    // start the server, define 'onRequest' as the callback function
    // - if we got a port from enivronment (ie. heroku, or foreman), use it, otherwise use 8888
    var port = process.env.PORT || 9999;
    http.createServer(onRequest).listen(port);
    console.log("Server has started on port " + port + ".");    
}

// export our start function (map public method to internal implementation function)
exports.start = start;