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<?phpnamespace GuzzleHttp\Handler;
 
 use GuzzleHttp\Psr7;
 use Psr\Http\Message\RequestInterface;
 
 /**
 * HTTP handler that uses cURL easy handles as a transport layer.
 *
 * When using the CurlHandler, custom curl options can be specified as an
 * associative array of curl option constants mapping to values in the
 * **curl** key of the "client" key of the request.
 */
 class CurlHandler
 {
 /** @var CurlFactoryInterface */
 private $factory;
 
 /**
 * Accepts an associative array of options:
 *
 * - factory: Optional curl factory used to create cURL handles.
 *
 * @param array $options Array of options to use with the handler
 */
 public function __construct(array $options = [])
 {
 $this->factory = isset($options['handle_factory'])
 ? $options['handle_factory']
 : new CurlFactory(3);
 }
 
 public function __invoke(RequestInterface $request, array $options)
 {
 if (isset($options['delay'])) {
 usleep($options['delay'] * 1000);
 }
 
 $easy = $this->factory->create($request, $options);
 curl_exec($easy->handle);
 $easy->errno = curl_errno($easy->handle);
 
 return CurlFactory::finish($this, $easy, $this->factory);
 }
 }
 
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