Handling redirect in Vlocity Integration Procedure having response code of 307

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Problem:-Clients api was having redirect policy on the server but its not handled by Vlocity integration procedure(IP), thus its failing with 307 response code

Solution:- 

• Error:- 307 Temporary Redirect
• Inside IP create “Remote Action” to refer the Apex class and apex method, which handles the redirect 307 error.
• Note:- This is not handled by default in IP inside vlocity

  //change this to implement vlocity_openInterface 
  global  class CC_RedirectDemoController {
      global static void getSession(){
          Http http = new Http();
          HttpRequest req = new HttpRequest();
          HttpResponse res = new HttpResponse();
          // do your initial http call here
          req.setMethod('POST');
          req.setHeader('Content-Type', 'application/json');
          req.setHeader('key', 'value');
          req.setEndpoint('URL to hit initially');
          req.setBody('body input data if available');
          system.debug('request ='+req);
          res = http.send(req);
          system.debug('response ='+res);
          // redirection checking
          boolean redirect = false;
          if(res.getStatusCode() >=300 && res.getStatusCode() <= 307 && res.getStatusCode() != 306) {
              do {
                  redirect = false; // reset the value each time
                  String loc = res.getHeader('Location'); // get location of the redirect
                  if(loc == null) {
                      redirect = false;
                      continue;
                  }
                  system.debug('inside redirect loc ='+loc);
                  req = new HttpRequest();
                  req.setEndpoint(loc);
                  req.setMethod('POST');
                  req.setHeader('Content-Type', 'application/json');
                  req.setEndpoint('URL to hit initially');
                 req.setBody('body input data if available');
                );
                   req.setBody('body input data if available');
                  res = http.send(req);
                  if(res.getStatusCode() != 500) { // 500 = fail
                      if(res.getStatusCode() >=300 && res.getStatusCode() <= 307 && res.getStatusCode() != 306) {
                          redirect= true;
                      }
                      // I do special handling here with cookies
                      // if you need to bring a session cookie over to the
                      // redirected page, this is the place to grab that info
                  }
              } while (redirect && Limits.getCallouts() != Limits.getLimitCallouts());
          }
          //congratulations you're outside of the redirects now
          //read what you need from the res object
          system.debug(res.getBody());
      } 
  }