Webhook: Compute the hash property

API
6

You should only echo the “hub.challenge” with a HTTP 200.

Not two things, as you seem to suggest.

For example:

app.route('/webhook/')
    .get(function(req, res) {
        // challenge

        if (req.query['hub.challenge']) {
            console.log('TwitchWebhooks: Send back the challenge');
            res.send(req.query['hub.challenge']);
       }
   });