Error de OAuth usando gtm-oauth2 para Instagram

Question

He configurado la solicitud de OAuth siguiendo la documentación de un "Servicio que no es de Google" y obtengo el 90% de este funcionamiento. La aplicación ofrece una vista web donde pueda acceder a Instagram utilizando el token de acceso correcta para mi aplicación y aceptar la solicitud alcance pero una vez que acepte la solicitud me sale el siguiente error:

Error Error Domain=com.google.HTTPStatus Code=400 "The operation couldn’t be completed. 
(com.google.HTTPStatus error 400.)" UserInfo=0x6b7ab00 {data=<7b22636f 6465223a 20343030 2c202265 72726f72 5f747970 65223a20 224f4175 74684578 63657074 696f6e22 2c202265 72726f72 5f6d6573 73616765 223a2022 596f7520 6d757374 20696e63 6c756465 20612076 616c6964 20636c69 656e745f 69642c20 20202020 20202020 20202020 72657370 6f6e7365 5f747970 652c2061 6e642072 65646972 6563745f 75726920 70617261 6d657465 7273227d>} 
Error data: 
{ 
    code = 400; 
    "error_message" = "You must include a valid client_id, response_type, and redirect_uri parameters"; 
    "error_type" = OAuthException; 
} 

Parece que el controlador está intentando completar la transacción OAuth contra google.com en lugar de api.instagram.com.

Aquí está mi código Objective-C para configurar e invocar el controlador:

static NSString *const kKeychainItemName = @"Instagram OAuth2"; 
static NSString *const kClientID = @"xxxxxxxxx"; // Removed for security 
static NSString *const kClientSecret = @"xxxxxxxxx"; // Removed for security 

static NSString *const authURLString = @"https://api.instagram.com/oauth/authorize/"; 
static NSString *const tokenURLString = @"https://api.instagram.com/oauth/authorize/"; 
static NSString *const redirectURI = @"http://google.com/NeverGonnaFindMe/"; 

... 

NSURL *tokenURL = [NSURL URLWithString:tokenURLString]; 

// Set up the OAuth request 
GTMOAuth2Authentication *auth = [GTMOAuth2Authentication 
      authenticationWithServiceProvider:@"Instagram API" 
      tokenURL:tokenURL 
      redirectURI:redirectURI 
      clientID:kClientID 
      clientSecret:kClientSecret 
     ]; 

// Specify the appropriate scope string, if any, according to the service's API documentation 
auth.scope = @"basic likes comments relationships"; 

NSURL *authURL = [NSURL URLWithString:authURLString]; 

// Display the authentication view 
GTMOAuth2ViewControllerTouch *viewController = [[GTMOAuth2ViewControllerTouch alloc] 
         initWithAuthentication:auth 
         authorizationURL:authURL 
         keychainItemName:kKeychainItemName 
         delegate:self 
         finishedSelector:@selector(viewController:finishedWithAuth:error:)              
        ]; 
// Capture the Cookie to delete later 
viewController.browserCookiesURL = [NSURL URLWithString:@"instagram.com/"]; 

// Now push our sign-in view 
[[self navigationController] pushViewController:viewController animated:YES]; 

Answer 1

Resuelto

https://groups.google.com/forum/?fromgroups#!topic/instagram-api-developers/SUYPX7ZQHhs

Era la URL token que era incorrecta. La URL del token correcto es: https://api.instagram.com/oauth/access_token/