We are hosting node.js applications in IIS on Windows via IISNode, so you need to update the listening port to use "process.env.PORT" in your code.
Helloworld ex:
hello.js:
var http = require('http');
http.createServer(function(req, res) {
res.writeHead(200, {
'Content-Type': 'text/plain'
});
res.end('Hello, world!');
}).listen(process.env.PORT);
