vimeo oAth authentication through iPhone app

Question

I have an iPad app and need to integrate vimeo to it. I'm in the initial stages of integrating it to my app. I first need to authenticate my app through vimeo.

I've gone through the steps for authentication in documentation and I'm able to pass through first 2 steps:

Request Token: http://vimeo.com/oauth/request_token

User Authorization: http://vimeo.com/oauth/authorize

But unable to get oauth_token and oauth_token_secret through last step:

Access Token: http://vimeo.com/oauth/access_token

Vimeo redirects to callback url instead of going back to the app which is fine until I get verifier and authorization token. But once I use these to get oauth_token and oauth_token_secret, console shows following error message:

Error Domain=NSURLErrorDomain Code=-1012 "The operation couldn’t be completed. 
(NSURLErrorDomain error -1012.)" UserInfo=0x18146180 {
    NSErrorFailingURLKey=http://vimeo.com/oauth/access_token?oauth_token=141b4ff56c48dc5d03501297bde85ebc&oauth_verifier=land-1886924229, 
    NSErrorFailingURLStringKey=http://vimeo.com/oauth/access_token?oauth_token=141b4ff56c48dc5d03501297bde85ebc&oauth_verifier=land-1886924229, 
    NSUnderlyingError=0x181483d0 "The operation couldn’t be completed. (kCFErrorDomainCFNetwork error -1012.)"
}

Can anyone please help or atleast provide some directions?

To further give an insight, I'm using OAuthConsumer framework. Below are the lines of code where we place request to get an access token:

- (void)successfulAuthorizationWithToken:(NSString *)token verifier:(NSString *)verifier  {
    NSLog(@"successfulAuthorizationWithToken");
    OAMutableURLRequest *request;
    OADataFetcher *fetcher;

    //NSURL *url = [NSURL URLWithString:@"https://api.twitter.com/oauth/access_token"];
    NSURL *url = [NSURL URLWithString:@"http://vimeo.com/oauth/access_token"];
    request = [[[OAMutableURLRequest alloc] initWithURL:url
                                               consumer:self.consumer
                                                  token:self.accessToken
                                                  realm:nil
                                      signatureProvider:nil autorelease];


    OARequestParameter *p0 = [[OARequestParameter alloc] initWithName:@"oauth_token"
                                                                value:token];
    OARequestParameter *p1 = [[OARequestParameter alloc] initWithName:@"oauth_verifier"
                                                                value:verifier];
    NSArray *params = [NSArray arrayWithObjects:p0, p1, nil];
    [request setParameters:params];

    fetcher = [[[OADataFetcher alloc] init] autorelease];

    [fetcher fetchDataWithRequest:request
                         delegate:self
                didFinishSelector:@selector(accessTokenTicket:didFinishWithData:)
                  didFailSelector:@selector(accessTokenTicket:didFailWithError:)];

    [p0 release];
    [p1 release];

}

I've also tried solutions specified in below link: Twitter API + OAuthConsumer.framework

It says to use [[[OAHMAC_SHA1SignatureProvider alloc] init] autorelease] as signatureProvider. But the results are same.

I need to get following values after I get verifier and authorized token using the access token step: oauth_token=YourAuthorizedOauthToken&oauth_token_secret=YourAuthorizedTokenSecret

Answer 1

Finally got it working. There were issues in the base string and oAuth Header string format.