iOS Same Ip, Different Ports, Session Invalidation Issue

1. Problem.

  1. The company performs normal login operations on the HTTPS server (port 443) ( https://ip1:443/ ),  then the data file upload is processed on port 666 ( https://ip1:666/ ).
  2. The server verifies and saves sessions in the cookie after successful login at https://ip1:443/, but then upload the file to the port 666 (https://ip1:666), and then go back to URL https://ip1:443.
  3. But after port 443 is called, the server fails to verify the session and the session timeout problem occurs.

2. Reason.

  1. Because the session state is implemented by the jsessionid stored in the cookie,  therefore, because the session id, name, domain, and path of both servers are the same, session id is overridden, this resulting in session invalidation.
  2. It is also concluded that cookies do not distinguish ports, cookies distinguish only domain, paths, and names.

3. Solution.

  1. Before accessing port 666, cache the cookie to the local, and then re-write the cookie after you return to port 443.
  2. Below is the source code.
  3. Export cookies and cache them.
    //Get all cookies
    NSHTTPCookieStorage* nCookies = [NSHTTPCookieStorage sharedHTTPCookieStorage];
    // Get a copy of the cookies.
    NSArray* nCookies = [nCookies cookiesForURL:[NSURL URLWithString:urlStr]].copy;
    
    // Loop to cache cookie.
    for(NSHTTPCookie*cookie in nCookies)
    {
       if([cookie isKindOfClass:[NSHTTPCookie class]])
       {
          // If cookie name is JSESSIONID
          if([cookie.name isEqualToString:@"JSESSIONID"])
          {
             // Get cookie related data.
             NSNumber*sessionOnly =[NSNumber numberWithBool:cookie.sessionOnly];
             NSNumber*isSecure = [NSNumber numberWithBool:cookie.isSecure];
             NSArray*cookies = [NSArray arrayWithObjects:cookie.name, cookie.value, sessionOnly, cookie.domain, cookie.path, isSecure,nil];
             [[NSUserDefaults standardUserDefaults]setObject:cookies forKey:@"cookies"];
    
             break;
          }
       }
    }
  4. Read cookies and rewrite.
    -(void)loadCookies
    {
       NSArray*cookies =[[NSUserDefaults standardUserDefaults]objectForKey:@"cookies"];
    
       if(cookies.count>0)
       {
          NSMutableDictionary*cookieProperties = [NSMutableDictionary dictionary];
          [cookieProperties setObject:[cookies objectAtIndex:0]forKey:NSHTTPCookieName];
    
          [cookieProperties setObject:[cookies objectAtIndex:1]forKey:NSHTTPCookieValue];
    
          [cookieProperties setObject:[cookies objectAtIndex:3]forKey:NSHTTPCookieDomain];
    
          [cookieProperties setObject:[cookies objectAtIndex:4]forKey:NSHTTPCookiePath];
    
          NSHTTPCookie*cookieuser = [NSHTTPCookie cookieWithProperties:cookieProperties];
    
          [[NSHTTPCookieStorage sharedHTTPCookieStorage]setCookie:cookieuser];
    
       }
    }
0 0 votes
Article Rating
Subscribe
Notify of
guest

This site uses Akismet to reduce spam. Learn how your comment data is processed.

0 Comments
Inline Feedbacks
View all comments
Clicky
0
Would love your thoughts, please comment.x
()
x