How can I add CORS-Headers to a static connect server?

Question

I am writing a little demo web server delivering static html,css and javascript. The server looks like

(function () {
    \"use strict\";

    var http = req         


        

Answer 1

express.static takes a configuration object. You can provide the property setHeaders and from that function you can set headers for the response:

    app.use(express.static('public', {
      setHeaders: function setHeaders(res, path, stat) {
        res.header('Access-Control-Allow-Origin', '*');
        res.header('Access-Control-Allow-Methods', 'GET');
        res.header('Access-Control-Allow-Headers', 'Content-Type');
      }
    }))

The parameters to this function are:

• res, the response object.
• path, the file path that is being sent.
• stat, the stat object of the file that is being sent.

I wish that the request were available here so that I could conditionally set the CORS headers based upon the Origin header.