How possible get API token ?

[sergeos]

Hi!
How possible use any Http client (I think in vb that named like as "MSXML2.XMLHTTP" or anything else) for getting token?
I can't adding parameter { "grant_type", "client_credentials" }
All times get error, what

{"error":"invalid_request","error_description":"The grant type was not specified in the request"}

Very long time search solution but without results.
In one forum I found this: http://stackoverflow.com/questions/3...in-asp-net-mvc

But, how this code transpose to VB6.0? How use parameters client_credentials?

And samples
with curl:

curl -u 204da9b95e2480a3455f:7a4bbb61262fdf41d410645292a0489ba752c6b9 https://api.stormpath.com/v1/applications/$YOUR_APPLICATION_ID \
-H 'Accept: application/json' -d 'grant_type=client_credentials'

with php:

$process = curl_init("https://api.stormpath.com/v1/applications/$YOUR_APPLICATION_ID");
curl_setopt($process, CURLOPT_HTTPHEADER, array('Accept: application/json'));
curl_setopt($process, CURLOPT_USERPWD, "204da9b95e2480a3455f:7a4bbb61262fdf41d410645292a0489ba752c6b9");
curl_setopt($process, CURLOPT_POST, 1);
curl_setopt($process, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($process, CURLOPT_POSTFIELDS, array('grant_type' => 'client_credentials'));
$result = curl_exec($process);
curl_close($process); 

Also, they wrote:

To receive an authorization token, you must send a POST request indicating Basic Authentication to the authorization address (https://api.stormpath.com/v1/applica...APPLICATION_ID). The parameters for authorization must be Client ID and Client Secret from the OAuth application settings page. It is also necessary to pass the POST request parameter grant_type with the value client_credentials

And

The resource is available only through the HTTPS protocol.
For all requests, you must specify the HTTP header 'Accept'. By default, it must be passed with 'application / json'.