title: OAuth Echo TwitPic — Working with a Twitter client on the iPhone
body: <p>Hey everyone, I've been trying to get Twitpic to work successfully in uploading a picture through my iPhone app. This has worked fine in the past however now they've changed all their auth code.</p>
  
  <p>This is what I've got, and for some reason is just giving me a failure:</p>
  
  <pre><code>oAuth = [[OAuth alloc] initWithConsumerKey:twitter_consumer_key andConsumerSecret:twitter_consumer_secret];
  
      NSString *fakeurl = @"https://api.twitter.com/1/account/verify_credentials.json";
      NSString *oauth_header = [oAuth oAuthHeaderForMethod:@"GET" andUrl:fakeurl andParams:nil];
      NSLog(@"OAuth header : %@\n\n", oauth_header);
  
      NSString *url = @"http://api.twitpic.com/2/upload.json";
  
      ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:[NSURL URLWithString:url]];
      request.delegate = self;
      [request addRequestHeader:@"User-Agent" value:@"ASIHTTPRequest"];
      request.requestMethod = @"GET";
  
      [request addRequestHeader:@"X-Verify-Credentials-Authorization" value:oauth_header];    
      [request addRequestHeader:@"X-Auth-Service-Provider" value:@"https://api.twitter.com/1/account/verify_credentials.json"];   
  
      if (_imageData) {
          NSLog(@"Pic not nil");
      }
  
      [request setData:_imageData forKey:@"media"];
      [request setPostValue:@""  forKey:@"message"];  
      [request setPostValue:twitpic_api_key  forKey:@"key"];  
  
      [request setDelegate:self];
      [request setDidFinishSelector:@selector(requestDone:)];
      [request setDidFailSelector:@selector(requestFailed:)];
  
      [request start];
  </code></pre>