Okta URL redirection issue - okta

Question

I have developed an application which do SSO in various applications. I am able to authorize user and able to redirect on application embedded link by passing sessionToken which is a value of cookieToken in that url and this piece of code is working fine and not asking for login again.
#GetMapping("get-sso-url/{user_id}")
public ResponseEntity<Object> getSSOUrl(#PathVariable("user_id") String userId, #RequestParam("app_id") String appId){
log.info("DashboardController::getSSOUrl::START");
UserActivityDetails userActivityDetails = userActivityService.getUserActivity(userId);
AppInfoDetails appInfoDetails = appInfoService.findById(appId);
String appUrl = appInfoDetails.getApiEndpoint() + userActivityDetails.getCookieToken();
log.debug("DashboardController::getSSOUrl::appUrl " + appUrl);
log.info("DashboardController::getSSOUrl::END");
return new ResponseEntity<>(new UrlResponse(appUrl), HttpStatus.OK);
}
Now I just want to verify that the url is returning HttpStatus.OK or not? so I have written like this:
public ResponseEntity<Object> getSSOUrl(#PathVariable("user_id") String userId, #RequestParam("app_id") String appId){
log.info("DashboardController::getSSOUrl::START");
UserActivityDetails userActivityDetails = userActivityService.getUserActivity(userId);
AppInfoDetails appInfoDetails = appInfoService.findById(appId);
String appUrl = appInfoDetails.getApiEndpoint() + userActivityDetails.getCookieToken();
log.debug("DashboardController::getSSOUrl::appUrl " + appUrl);
log.info("DashboardController::getSSOUrl::END");
return checkAppResponse(appUrl).equals(HttpStatus.OK) ? new ResponseEntity<>(new UrlResponse(appUrl), HttpStatus.OK)
: new ResponseEntity<>(new UrlResponse(appUrl), HttpStatus.NOT_FOUND);
}
private HttpStatus checkAppResponse(String appUrl){
try{
URL url = new URL(appUrl);
HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();
int statusCode = httpURLConnection.getResponseCode();
if(statusCode == 200)
return HttpStatus.OK;
} catch (MalformedURLException e) {
throw new CustomRuntimeException(e.getMessage());
} catch (IOException e) {
throw new RuntimeException(e);
}
return HttpStatus.NOT_FOUND;
}
After adding above check, when I'm trying to redirect on application it asks me to login to the okta first.
Here is a sreenshot