google buzz api error

I am trying to post some content to my google buzz account using google buzz api. I tried using their sample code that they have provided ,but it give the below error

Array

( [http_code] => 401 [headers] => Array ( [WWW-Authenticate] => AuthSub realm="https://www.google.com/accounts/AuthSubRequest" allowed-scopes="https://www.googleapis.com/auth/buzz" [Content-Type] => application/json; charset=UTF-8 [Date] => Tue, 20 Jul 2010 12:22:05 GMT [Expires] => Tue, 20 Jul 2010 12:22:05 GMT [Cache-Control] => private, max-age=0 [X-Content-Type-Options] => nosniff [X-Frame-Options] => SAMEORIGIN [X-XSS-Protection] => 1; mode=block [Server] => GSE [Transfer-Encoding] => chunked )

[data] => Array
    (
        [error] => Array
            (
                [errors] => Array
                    (
                        [0] => Array
                            (
                                [message] => User must have authorized this application to have the following scope in order to make this ca开发者_Go百科ll: [https://www.googleapis.com/auth/buzz]  Also , make sure your application is using the Buzz specific OAuth authorization URL.
                                [locationType] => header
                                [location] => Authorization
                            )

                    )

                [code] => 401
                [message] => User must have authorized this application to have the following scope in order to make this call: [https://www.googleapis.com/auth/buzz]  Also , make sure your application is using the Buzz specific OAuth authorization URL.
            )

    )

)

i have added the variables in the config.php file which were required

'site_name' => 'example.com',

'oauth_consumer_key' => 'example.com', 'oauth_consumer_secret' => 'consumersecret', 'oauth_rsa_key' => '',

Does anybody know what i might be doing wrong here??

How can i store the tokens that are returned to the database?? Since if the server is restarted the cache is lost and the users have to authenticate again.

---

The issue was with the domain that i was passing. Instead of passing example.com i was passing http://example.com . So make sure the site_name , oauth_consumer_key and domain variables are passed properly.