Context.php
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<?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 GatewayWorker\Lib;
use Exception;
/**
* 上下文 包含当前用户 uid， 内部通信 local_ip local_port socket_id，以及客户端 client_ip client_port
*/
class Context
{
/**
* 内部通讯 id
*
* @var string
*/
public static $local_ip;
/**
* 内部通讯端口
*
* @var int
*/
public static $local_port;
/**
* 客户端 ip
*
* @var string
*/
public static $client_ip;
/**
* 客户端端口
*
* @var int
*/
public static $client_port;
/**
* client_id
*
* @var string
*/
public static $client_id;
/**
* 连接 connection->id
*
* @var int
*/
public static $connection_id;
/**
* 旧的session
*
* @var string
*/
public static $old_session;
/**
* 编码 session
*
* @param mixed $session_data
* @return string
*/
public static function sessionEncode($session_data = '')
{
if ($session_data !== '') {
return serialize($session_data);
}
return '';
}
/**
* 解码 session
*
* @param string $session_buffer
* @return mixed
*/
public static function sessionDecode($session_buffer)
{
return unserialize($session_buffer);
}
/**
* 清除上下文
*
* @return void
*/
public static function clear()
{
self::$local_ip = self::$local_port = self::$client_ip = self::$client_port =
self::$client_id = self::$connection_id = self::$old_session = null;
}
/**
* 通讯地址到 client_id 的转换
*
* @param int $local_ip
* @param int $local_port
* @param int $connection_id
* @return string
*/
public static function addressToClientId($local_ip, $local_port, $connection_id)
{
return bin2hex(pack('NnN', $local_ip, $local_port, $connection_id));
}
/**
* client_id 到通讯地址的转换
*
* @param string $client_id
* @return array
* @throws Exception
*/
public static function clientIdToAddress($client_id)
{
if (strlen($client_id) !== 20) {
echo new Exception("client_id $client_id is invalid");
return false;
}
return unpack('Nlocal_ip/nlocal_port/Nconnection_id', pack('H*', $client_id));
}
}