spring - Maximum call stack size exceeded in Http Interceptor of Angular 4

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I have check-session api which check if the session is still valid. I want to check it in every request which means I would like to call this api before every request in Http Interceptor of Angular 4.

return next.handle(req).do((event: HttpEvent<any>) => {
 const http = this.inj.get(HttpClient);
 http.get('/api/auth/check-session').subscribe(res => 
 console.log('res', res);
 ); 

And on server site it looks like:

 @RequestMapping(value = "/check-session", method = RequestMethod.GET)
 @ResponseBody
 public Boolean checkToken(HttpServletRequest request) 
 boolean requestedSessionIdValid = request.isRequestedSessionIdValid();
 return request.isRequestedSessionIdValid();
 

But when I start my app and want to call first api I get error:

ERROR RangeError: Maximum call stack size exceeded
 at Observable.webpackJsonp.../../../../rxjs/Observable.js.Observable._trySubscribe (Observable.js:177)
 at Observable.webpackJsonp.../../../../rxjs/Observable.js.Observable.subscribe (Observable.js:160)

Does anyone have any clue how can I get rid of this error?

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لینک منبع