Twitter O-Auth Callback url - twitter

Question

I am having a problem with Twitter's oauth authentication and using a callback url.
I am coding in php and using the sample code referenced by the twitter wiki, http://github.com/abraham/twitteroauth
I got that code, and tried a simple test and it worked nicely. However I want to programatically specify the callback url, and the example did not support that.
So I quickly modified the getRequestToken() method to take in a parameter and now it looks like this:
function getRequestToken($params = array()) {
$r = $this->oAuthRequest($this->requestTokenURL(), $params);
$token = $this->oAuthParseResponse($r);
$this->token = new OAuthConsumer($token['oauth_token'], $token['oauth_token_secret']);
return $token;
}
and my call looks like this
$tok = $to->getRequestToken(array('oauth_callback' => 'http://127.0.0.1/twitter_prompt/index.php'));
This is the only change I made, and the redirect works like a charm, however I am getting an error when I then try and use my newly granted access to try and make a call. I get a "Could not authenticate you" error. Also the application never actually gets added to the users authorized connections.
Now I read the specs and I thought all I had to do was specify the parameter when getting the request token. Could someone a little more seasoned in oauth and twitter possibly give me a hand? Thank You

Answer 1

I think this is fixed by twitter by now or you might have missed to provide a default callback url in your application settings, which is required for dynamic callback url to work as mentioned by others above.
Any case, I got this working by passing the oath_callback parameter while retrieving the request token. I am using twitter-async PHP library and had to make a small tweak to make the library pass the callback url.
If you are using twitter-async, the change is below:
modified getRequestToken and getAuthenticateURL functions to take callback url as parameter
public function getRequestToken($callback_url = null)
{
$params = empty($callback_url) ? null : array('oauth_callback'=>$callback_url);
$resp = $this->httpRequest('GET', $this->requestTokenUrl, $params);
return new EpiOAuthResponse($resp);
}
public function getAuthenticateUrl($callback_url = null)
{
$token = $this->getRequestToken($callback_url);
return $this->authenticateUrl . '?oauth_token=' . $token->oauth_token;
}
And pass the callback url from your PHP code.
$twitterObj->getAuthenticateUrl('http://localhost/twitter/confirm.php');

Answer 2

#Ian, twitter now allows 127.0.0.1 and has made some other recent changes.
#jtymann, check my answer here and see if it helps
Twitter oauth_callback parameter being ignored!
GL
jingles

Answer 3

even me to was getting 401 error.. but its resolved..
during registering your application to twitter you need to give callback url...
like http://localhost:8080.
i have done this using java...
so my code is: String CallbackURL="http://localhost:8080/tweetproj/index.jsp";
provider.retrieveRequestToken(consumer,CallbackURL);
where tweetproj is my project name
and index.jsp is just one jsp page...
Hope this may helps u...

Answer 4

After the user authorizes the application on twitter.com and they return to your callback URL you have to exchange the request token for an access token.

Answer 5

Twitter does not honor the oauth_callback parameter and will only use the one specified in the registered application settings.
It also doesn't allow for 127.0.0.1 or localhost names in that callback, so I've setup http://dev.twipler.com which is setup for 127.0.0.1 in DNS so you can safely use;
http://dev.twipler.com/twitter_prompt/index.php