Hi , I am integrating constant contact api to my site . but auth redirection not working i first give http://localhost and dont get then i use 127.0.0.1 and changed my virtualhost setting . not working returning  "'Invalid redirect.  and Please close the window to return to your application. '"   Please help me to solve this.   my url is here   https://oauth2.constantcontact.com/oauth2/oauth/siteowner/authorize?client_id=myclientid&redirect_uri=http://127.0.0.1/&response_type=token   If i close that window nothing happen not redirecting to  my site .    can anyone provide me a simple code to integrate costant contact ... View more