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Directory >> /var/www/html/back/vendor/react/socket/src/

File / Folder	Size	Action
.	-
Connection.php	5.863KB	edt ren
ConnectionInterface.php	4.321KB	edt ren
Connector.php	7.798KB	edt ren
ConnectorInterface.php	2.041KB	edt ren
DnsConnector.php	4.942KB	edt ren
FdServer.php	7.349KB	edt ren
FixedUriConnector.php	1.042KB	edt ren
HappyEyeBallsConnection...	11.522KB	edt ren
HappyEyeBallsConnector.php	2.833KB	edt ren
LimitingServer.php	6.469KB	edt ren
SecureConnector.php	5.1KB	edt ren
SecureServer.php	7.563KB	edt ren
Server.php	3.664KB	edt ren
ServerInterface.php	5.146KB	edt ren
SocketServer.php	8.729KB	edt ren
StreamEncryption.php	5.156KB	edt ren
TcpConnector.php	7.132KB	edt ren
TcpServer.php	8.812KB	edt ren
TimeoutConnector.php	2.802KB	edt ren
UnixConnector.php	1.658KB	edt ren
UnixServer.php	5.025KB	edt ren

<?php

namespace React\Socket;

use Evenement\EventEmitter;
use Exception;
use OverflowException;

/**
 * The `LimitingServer` decorator wraps a given `ServerInterface` and is responsible
 * for limiting and keeping track of open connections to this server instance.
 *
 * Whenever the underlying server emits a `connection` event, it will check its
 * limits and then either
 * - keep track of this connection by adding it to the list of
 *   open connections and then forward the `connection` event
 * - or reject (close) the connection when its limits are exceeded and will
 *   forward an `error` event instead.
 *
 * Whenever a connection closes, it will remove this connection from the list of
 * open connections.
 *
 * ```php
 * $server = new React\Socket\LimitingServer($server, 100);
 * $server->on('connection', function (React\Socket\ConnectionInterface $connection) {
 *     $connection->write('hello there!' . PHP_EOL);
 *     …
 * });
 * ```
 *
 * See also the `ServerInterface` for more details.
 *
 * @see ServerInterface
 * @see ConnectionInterface
 */
class LimitingServer extends EventEmitter implements ServerInterface
{
    private $connections = array();
    private $server;
    private $limit;

private $pauseOnLimit = false;
    private $autoPaused = false;
    private $manuPaused = false;

/**
     * Instantiates a new LimitingServer.
     *
     * You have to pass a maximum number of open connections to ensure
     * the server will automatically reject (close) connections once this limit
     * is exceeded. In this case, it will emit an `error` event to inform about
     * this and no `connection` event will be emitted.
     *
     * ```php
     * $server = new React\Socket\LimitingServer($server, 100);
     * $server->on('connection', function (React\Socket\ConnectionInterface $connection) {
     *     $connection->write('hello there!' . PHP_EOL);
     *     …
     * });
     * ```
     *
     * You MAY pass a `null` limit in order to put no limit on the number of
     * open connections and keep accepting new connection until you run out of
     * operating system resources (such as open file handles). This may be
     * useful if you do not want to take care of applying a limit but still want
     * to use the `getConnections()` method.
     *
     * You can optionally configure the server to pause accepting new
     * connections once the connection limit is reached. In this case, it will
     * pause the underlying server and no longer process any new connections at
     * all, thus also no longer closing any excessive connections.
     * The underlying operating system is responsible for keeping a backlog of
     * pending connections until its limit is reached, at which point it will
     * start rejecting further connections.
     * Once the server is below the connection limit, it will continue consuming
     * connections from the backlog and will process any outstanding data on
     * each connection.
     * This mode may be useful for some protocols that are designed to wait for
     * a response message (such as HTTP), but may be less useful for other
     * protocols that demand immediate responses (such as a "welcome" message in
     * an interactive chat).
     *
     * ```php
     * $server = new React\Socket\LimitingServer($server, 100, true);
     * $server->on('connection', function (React\Socket\ConnectionInterface $connection) {
     *     $connection->write('hello there!' . PHP_EOL);
     *     …
     * });
     * ```
     *
     * @param ServerInterface $server
     * @param int|null        $connectionLimit
     * @param bool            $pauseOnLimit
     */
    public function __construct(ServerInterface $server, $connectionLimit, $pauseOnLimit = false)
    {
        $this->server = $server;
        $this->limit = $connectionLimit;
        if ($connectionLimit !== null) {
            $this->pauseOnLimit = $pauseOnLimit;
        }

$this->server->on('connection', array($this, 'handleConnection'));
        $this->server->on('error', array($this, 'handleError'));
    }

/**
     * Returns an array with all currently active connections
     *
     * ```php
     * foreach ($server->getConnection() as $connection) {
     *     $connection->write('Hi!');
     * }
     * ```
     *
     * @return ConnectionInterface[]
     */
    public function getConnections()
    {
        return $this->connections;
    }

public function getAddress()
    {
        return $this->server->getAddress();
    }

public function pause()
    {
        if (!$this->manuPaused) {
            $this->manuPaused = true;

if (!$this->autoPaused) {
                $this->server->pause();
            }
        }
    }

public function resume()
    {
        if ($this->manuPaused) {
            $this->manuPaused = false;

if (!$this->autoPaused) {
                $this->server->resume();
            }
        }
    }

public function close()
    {
        $this->server->close();
    }

/** @internal */
    public function handleConnection(ConnectionInterface $connection)
    {
        // close connection if limit exceeded
        if ($this->limit !== null && \count($this->connections) >= $this->limit) {
            $this->handleError(new \OverflowException('Connection closed because server reached connection limit'));
            $connection->close();
            return;
        }

$this->connections[] = $connection;
        $that = $this;
        $connection->on('close', function () use ($that, $connection) {
            $that->handleDisconnection($connection);
        });

// pause accepting new connections if limit exceeded
        if ($this->pauseOnLimit && !$this->autoPaused && \count($this->connections) >= $this->limit) {
            $this->autoPaused = true;

if (!$this->manuPaused) {
                $this->server->pause();
            }
        }

$this->emit('connection', array($connection));
    }

/** @internal */
    public function handleDisconnection(ConnectionInterface $connection)
    {
        unset($this->connections[\array_search($connection, $this->connections)]);

// continue accepting new connection if below limit
        if ($this->autoPaused && \count($this->connections) < $this->limit) {
            $this->autoPaused = false;

if (!$this->manuPaused) {
                $this->server->resume();
            }
        }
    }

/** @internal */
    public function handleError(\Exception $error)
    {
        $this->emit('error', array($error));
    }
}