Missing PFX or certificate + private key - node.js

Question

I have set the keys to node.js but still i am unable to get it to working.
Can anybody tell me what should i do to make it work properly.
I need to work with https with node.js.
I get the following error.
`tls.js:1127
throw new Error('Missing PFX or certificate + private key.');
^
Error: Missing PFX or certificate + private key.
at Server (tls.js:1127:11)
at new Server (https.js:35:14)
at Object.exports.createServer (https.js:54:10)
at Object.<anonymous> (/var/www/html/fusionmate/nodejs/server.js:4:36)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16)`
Hers my code
var
app = require('https').createServer(handler),
io = require('socket.io')(app),
redis = require('redis'),
fs = require('fs'),
redisClient = redis.createClient();
var options = {
key: fs.readFileSync('/etc/apache2/ssl/apache.key'),
cert: fs.readFileSync('/etc/apache2/ssl/apache.crt')
};
app.createServer(options);
app.listen(3000);
console.log('Realtime Chat Server running at http://127.0.0.1:3000/');
function handler (req, res) {
fs.readFile(__dirname + '/index.html', function(err, data) {
if(err) {
res.writeHead(500);
return res.end('Error loading index.html');
}
res.writeHead(200);
res.end(data);
});
}

Answer 1

There are two issues here:
options needs to be passed to https.createServer() as the first argument (with handler being the optional second argument), but you're just passing in a request handler function. For example:
var fs = require('fs');
var options = {
key: fs.readFileSync('/etc/apache2/ssl/apache.key'),
cert: fs.readFileSync('/etc/apache2/ssl/apache.crt')
};
var app = require('https').createServer(options, handler);
// ...
Further down, you're calling createServer() on an https.Server (app) instance, which isn't correct (you've already created a server instance and instances don't have such a method).