X-XSRF-Token header is not setting in angular6 - node.js

Question

I am getting some strange issue in my angular 6 and nodeJS web app.
I have to implement csrf protection so I have implemented csurf in node js, my node js code is given below,
let express=require('express');
let app=express();
var cookieParser = require('cookie-parser')
csrf = require('csurf');
//import body parser
let bodyParser=require('body-parser');
app.use(bodyParser.urlencoded({
extended: true
}));
app.use(bodyParser.json());
app.use(function(req, res, next) {
res.header("Access-Control-Allow-Origin","*");
res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept,X-XSRF-Token");
res.header('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE');
res.header('Access-Control-Allow-Credentials', true);
next();
});
app.use(cookieParser('ksdnfjn9834f80sa9asjfasdj'));
app.use(csrf({ cookie: true }));
app.use(function(req, res, next) {
console.log(req.csrfToken());
res.cookie('XSRF-TOKEN', req.csrfToken(),{ httpOnly: false,Path:"/" });
return next();
});
app.use('/api',apiRoutes);
app.use('/admin',adminapiRoutes);
app.listen(3000,function(){
console.log('api is listening on port'+3000);
})
my angular js code looks like this, to call api post request,
this.http.post(this.contact_api_url, {
"name": this.contact_name,
"email": this.contact_email,
"message": this.contact_message
},{withCredentials: true,headers: new HttpHeaders().set('X-XSRF-TOKEN', "token_get_in_cookie" ) }).subscribe((val) => {
this.renderer.removeClass(loda_element,'show');
//var msg=JSON.stringify(val);
alertify.success(val['message']);
this.contact_name = '';
this.contact_email = '';
this.contact_message = '';
grecaptcha.reset();
this.captcha_response = '';
}, error => {
this.renderer.removeClass(loda_element,'show');
alertify.error("Error Occurred. Try Again.");
});
Now the issue is it is not setting header any way, even not adding any other header I have also added below code in imports
HttpClientXsrfModule.withOptions({
cookieName: 'XSRF-TOKEN',
headerName: 'X-XSRF-TOKEN'
}),
but nothing works it is not adding X-XSRF-TOKEN header, I have also implemented interceptor as below,
intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
let requestToForward = req;
let token = this.tokenExtractor.getToken() as string;
const headers: any = {};
if (token !== null) {
headers['X-XSRF-TOKEN'] = token; // add it to the header
requestToForward = req.clone({ setHeaders: headers });
}
return next.handle(requestToForward);
}
I am also getting token value which is set by node js code in XSRF-TOKEN but header is not setting.
Can any one have idea why header is not setting in angular 6?
Note: I am working on localhost so nodeJS is running on http://localhost:3000 and angular is running on http://localhost:4200