cocoa - Google App Engine with ClientLogin Interface for Objective-C

Question

I'm experiencing the same problem in this previous stackoverflow.com post.

Specifically, I seem to be able to get the "Auth" token correctly, but attempts to use it in the header when I access later pages still just return me the login page's HTML.

Following links related to this post, I've determined that you need to make a subsequent call to this URL.

A call to the URL will then give you an ACSID cookie which then needs to be passed in subsequent calls in order to maintain an authenticated state.

When requesting this cookie, I've read various posts saying you need to specify your original auth token by appending it to the query string such that:

?auth=this_is_my_token

I've also read that you should set it in the http header as described in google's documentation such that a http header name/value is:

Authorization: GoogleLogin auth=yourAuthToken

I've tried both approaches and am not seeing any cookies returned. I've used Wireshark, LiveHttpHeaders for Firefox, and simple NSLog statements trying to see if anything like this is returned.

Below is the code snippet I've been using.

NSURL* url = [NSURL URLWithString:[NSString stringWithFormat:@"http://yourapp.appspot.com/_ah/login?auth=%@", [token objectForKey:@"Auth"]]];
NSHTTPURLResponse* response;
NSError* error;
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
[request setValue:[NSString stringWithFormat:@"GoogleLogin auth=%@", [token objectForKey:@"Auth"]] forHTTPHeaderField:@"Authorization"];
NSData * data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];  

//show me all header fields
NSLog([[response allHeaderFields] description]);

//show me the response
NSLog(@"%@", [[[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding] autorelease]);
NSArray * all = [NSHTTPCookie cookiesWithResponseHeaderFields:[response allHeaderFields] forURL:[NSURL URLWithString:@"http://yourapp.appspot.com/_ah/login"]];

//show me all cookies
for (NSHTTPCookie *cookie in all) 
{
    NSLog(@"Name: %@ : Value: %@", cookie.name, cookie.value); 
}

I hope you can use ClientLogin for Google App Engine code.

Answer 1

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