# class http\Client implements SplSubject, Countable
-The HTTP client. The only driver currently supported is http\Client\Curl.
+The HTTP client. See http\Client\Curl's [options](http/Client/Curl#Options:) which is the only driver currently supported.
+
+## Changelog:
+
+Version | Change
+--------|-------
+2.3.0 | Deprecated methods:<br>http\Client::enablePipelining() and <br>http\Client::enableEvents().<br>Added Methods:<br>http\Client::configure(),<br>http\Client::getAvailableConfiguration() and<br>http\Client::getAvailableOptions().
## Examples:
## Properties:
-* private $observers = NULL
- SplObjectStorage, attached observers.
-* protected $options = NULL
- Array of set options.
-* protected $history = NULL
- http\Message request/response history.
-* public $recordHistory = false
- Boolean flag whether to record history in http\Client::$history.
+* private SplObjectStorage $observers = NULL
+ Attached observers.
+* protected array $options = NULL
+ Set options.
+* protected http\Message $history = NULL
+ Request/response history.
+* public bool $recordHistory = false
+ Whether to record history in http\Client::$history.