<?php

/**

* This file is part of workerman.

*

* Licensed under The MIT License

* For full copyright and license information, please see the MIT-LICENSE.txt

* Redistributions of files must retain the above copyright notice.

*

* @author walkor<walkor@workerman.net>

* @copyright walkor<walkor@workerman.net>

* @link http://www.workerman.net/

* @license http://www.opensource.org/licenses/mit-license.php MIT License

*/

namespace Workerman\Connection;

use Workerman\Events\Libevent;

use Workerman\Events\Select;

use Workerman\Events\EventInterface;

use Workerman\Worker;

use \Exception;

/**

* connection类的接口

*/

abstract class ConnectionInterface

{

/**

* status命令的统计数据

* @var array

*/

public static $statistics = array(

'connection_count'=>0,

'total_request' => 0,

'throw_exception' => 0,

'send_fail' => 0,

);

/**

* 当收到数据时，如果有设置$onMessage回调，则执行

* @var callback

*/

public $onMessage = null;

/**

* 当连接关闭时，如果设置了$onClose回调，则执行

* @var callback

*/

public $onClose = null;

/**

* 当出现错误时，如果设置了$onError回调，则执行

* @var callback

*/

public $onError = null;

/**

* 发送数据给对端

* @param string $send_buffer

* @return void|boolean

*/

abstract public function send($send_buffer);

/**

* 获得远端ip

* @return string

*/

abstract public function getRemoteIp();

/**

* 获得远端端口

* @return int

*/

abstract public function getRemotePort();

/**

* 关闭连接，为了保持接口一致，udp保留了此方法，当是udp时调用此方法无任何作用

* @void

*/

abstract public function close($data = null);

}