/**
* Sends the actual request to obtain a request token.
*
* @return array('http_code' => HTTP response code (200, 404, 401, etc), 'data' => the html document)
*/
protected function requestRequestToken($callbackUrl)
{
global $apiConfig;
$requestTokenRequest = apiClientOAuthRequest::from_consumer_and_token($this->consumerToken, NULL, "GET", $this->service['request_token_url'], array());
$requestTokenRequest->set_parameter('scope', $this->service['scope']);
$requestTokenRequest->set_parameter('oauth_callback', $callbackUrl);
$requestTokenRequest->sign_request($this->signatureMethod, $this->consumerToken, NULL);
$request = $this->io->makeRequest(new apiHttpRequest($requestTokenRequest));
if ($request->getResponseHttpCode() != 200) {
throw new apiAuthException("Couldn't fetch request token, http code: " . $request->getResponseHttpCode() . ', response body: ' . $request->getResponseBody());
}
return $request->getResponseBody();
}
