if condition not working in node js

I am working on mobile application with nodejs and mongo db for server side functionality.

I have implemented a custom header to be sent in every request and I have following function to check header values.

Here is my CODE :

 /**
     * 
     * Check Request headers
     * @param : headers 
     * @returns : boolean
     * 
     * */
    function checkHeaders(data) {
        var customHeader = JSON.stringify(data.appsecret).valueOf().trim();
        var contentTypeHeader = JSON.stringify(data["content-type"]).valueOf().trim();
        if (contentTypeHeader === "application/x-www-form-urlencoded" && customHeader === "xxxxx") {
            return 1;
        } else {
            return 0;
        }
    }

Here I always get 0 as the response and I have checked the values of all 3 variables i.e.

1. data,

2. customHeader ,

3. contentTypeHeader

are received correct. but the values in if condition are not matched and I always get " 0 " as the result.

Any suggestion would be a great help!

Thanks in Advance!