反应本机中的ccavenue集成问题

Question

这是什么服务器？如何进行此为req和res ??

我尝试从api获取加密密钥，但是我也不知道在哪里使用该密钥

server.get('/make-payment', function(req, res) {
            ccavenue.makePayment(res); // It will redirect to ccavenue payment
        });

// Server url should be as redirect url (which you are passing as Redirect Url).
    server.post('/redirect-link', function response(req, res) {
        var data = ccavenue.paymentRedirect(req); //It will get response from ccavenue payment.

        if(data.isCheckSumValid == true && data.AuthDesc == 'Y') {
            // Success
            // Your code
        } else if(data.isCheckSumValid == true && data.AuthDesc == 'N') {
            // Unuccessful
            // Your code
        } else if(data.isCheckSumValid == true && data.AuthDesc == 'B') {
            // Batch processing mode
            // Your code
        } else {
            // Illegal access
            // Your code
        }
    });

它应重定向到cc avenue网页