Proceeding with payment

We then define the /ProcessingPayment route, which will be requested when the user clicks the Pay with BTC button to generate and render the bitcoin payment URL:

app.use(bodyParser.json());
app.post("/ProcessingPayment", function(req, res) {
    var amount_ = req.body.amount; 
    var resp = compose_uri(amount_)+"?amount="+amount_;
    res.send(resp);
});