Initial Commit

12 files changed, 2086 insertions, 0 deletions

diff --git a/assets/php/vendor/react/event-loop/src/ExtEvLoop.php b/assets/php/vendor/react/event-loop/src/ExtEvLoop.php
new file mode 100644
index 0000000..74db6d0
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/ExtEvLoop.php
@@ -0,0 +1,252 @@
+<?php
+
+namespace React\EventLoop;
+
+use Ev;
+use EvIo;
+use EvLoop;
+use React\EventLoop\Tick\FutureTickQueue;
+use React\EventLoop\Timer\Timer;
+use SplObjectStorage;
+
+/**
+ * An `ext-ev` based event loop.
+ *
+ * This loop uses the [`ev` PECL extension](https://pecl.php.net/package/ev),
+ * that provides an interface to `libev` library.
+ *
+ * This loop is known to work with PHP 5.4 through PHP 7+.
+ *
+ * @see http://php.net/manual/en/book.ev.php
+ * @see https://bitbucket.org/osmanov/pecl-ev/overview
+ */
+class ExtEvLoop implements LoopInterface
+{
+    /**
+     * @var EvLoop
+     */
+    private $loop;
+
+    /**
+     * @var FutureTickQueue
+     */
+    private $futureTickQueue;
+
+    /**
+     * @var SplObjectStorage
+     */
+    private $timers;
+
+    /**
+     * @var EvIo[]
+     */
+    private $readStreams = [];
+
+    /**
+     * @var EvIo[]
+     */
+    private $writeStreams = [];
+
+    /**
+     * @var bool
+     */
+    private $running;
+
+    /**
+     * @var SignalsHandler
+     */
+    private $signals;
+
+    /**
+     * @var \EvSignal[]
+     */
+    private $signalEvents = [];
+
+    public function __construct()
+    {
+        $this->loop = new EvLoop();
+        $this->futureTickQueue = new FutureTickQueue();
+        $this->timers = new SplObjectStorage();
+        $this->signals = new SignalsHandler();
+    }
+
+    public function addReadStream($stream, $listener)
+    {
+        $key = (int)$stream;
+
+        if (isset($this->readStreams[$key])) {
+            return;
+        }
+
+        $callback = $this->getStreamListenerClosure($stream, $listener);
+        $event = $this->loop->io($stream, Ev::READ, $callback);
+        $this->readStreams[$key] = $event;
+    }
+
+    /**
+     * @param resource $stream
+     * @param callable $listener
+     *
+     * @return \Closure
+     */
+    private function getStreamListenerClosure($stream, $listener)
+    {
+        return function () use ($stream, $listener) {
+            call_user_func($listener, $stream);
+        };
+    }
+
+    public function addWriteStream($stream, $listener)
+    {
+        $key = (int)$stream;
+
+        if (isset($this->writeStreams[$key])) {
+            return;
+        }
+
+        $callback = $this->getStreamListenerClosure($stream, $listener);
+        $event = $this->loop->io($stream, Ev::WRITE, $callback);
+        $this->writeStreams[$key] = $event;
+    }
+
+    public function removeReadStream($stream)
+    {
+        $key = (int)$stream;
+
+        if (!isset($this->readStreams[$key])) {
+            return;
+        }
+
+        $this->readStreams[$key]->stop();
+        unset($this->readStreams[$key]);
+    }
+
+    public function removeWriteStream($stream)
+    {
+        $key = (int)$stream;
+
+        if (!isset($this->writeStreams[$key])) {
+            return;
+        }
+
+        $this->writeStreams[$key]->stop();
+        unset($this->writeStreams[$key]);
+    }
+
+    public function addTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, false);
+
+        $that = $this;
+        $timers = $this->timers;
+        $callback = function () use ($timer, $timers, $that) {
+            call_user_func($timer->getCallback(), $timer);
+
+            if ($timers->contains($timer)) {
+                $that->cancelTimer($timer);
+            }
+        };
+
+        $event = $this->loop->timer($timer->getInterval(), 0.0, $callback);
+        $this->timers->attach($timer, $event);
+
+        return $timer;
+    }
+
+    public function addPeriodicTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, true);
+
+        $callback = function () use ($timer) {
+            call_user_func($timer->getCallback(), $timer);
+        };
+
+        $event = $this->loop->timer($interval, $interval, $callback);
+        $this->timers->attach($timer, $event);
+
+        return $timer;
+    }
+
+    public function cancelTimer(TimerInterface $timer)
+    {
+        if (!isset($this->timers[$timer])) {
+            return;
+        }
+
+        $event = $this->timers[$timer];
+        $event->stop();
+        $this->timers->detach($timer);
+    }
+
+    public function futureTick($listener)
+    {
+        $this->futureTickQueue->add($listener);
+    }
+
+    public function run()
+    {
+        $this->running = true;
+
+        while ($this->running) {
+            $this->futureTickQueue->tick();
+
+            $hasPendingCallbacks = !$this->futureTickQueue->isEmpty();
+            $wasJustStopped = !$this->running;
+            $nothingLeftToDo = !$this->readStreams
+                && !$this->writeStreams
+                && !$this->timers->count()
+                && $this->signals->isEmpty();
+
+            $flags = Ev::RUN_ONCE;
+            if ($wasJustStopped || $hasPendingCallbacks) {
+                $flags |= Ev::RUN_NOWAIT;
+            } elseif ($nothingLeftToDo) {
+                break;
+            }
+
+            $this->loop->run($flags);
+        }
+    }
+
+    public function stop()
+    {
+        $this->running = false;
+    }
+
+    public function __destruct()
+    {
+        /** @var TimerInterface $timer */
+        foreach ($this->timers as $timer) {
+            $this->cancelTimer($timer);
+        }
+
+        foreach ($this->readStreams as $key => $stream) {
+            $this->removeReadStream($key);
+        }
+
+        foreach ($this->writeStreams as $key => $stream) {
+            $this->removeWriteStream($key);
+        }
+    }
+
+    public function addSignal($signal, $listener)
+    {
+        $this->signals->add($signal, $listener);
+
+        if (!isset($this->signalEvents[$signal])) {
+            $this->signalEvents[$signal] = $this->loop->signal($signal, function() use ($signal) {
+                $this->signals->call($signal);
+            });
+        }
+    }
+
+    public function removeSignal($signal, $listener)
+    {
+        $this->signals->remove($signal, $listener);
+
+        if (isset($this->signalEvents[$signal])) {
+            $this->signalEvents[$signal]->stop();
+            unset($this->signalEvents[$signal]);
+        }
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/ExtEventLoop.php b/assets/php/vendor/react/event-loop/src/ExtEventLoop.php
new file mode 100644
index 0000000..622dd47
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/ExtEventLoop.php
@@ -0,0 +1,259 @@
+<?php
+
+namespace React\EventLoop;
+
+use BadMethodCallException;
+use Event;
+use EventBase;
+use EventConfig as EventBaseConfig;
+use React\EventLoop\Tick\FutureTickQueue;
+use React\EventLoop\Timer\Timer;
+use SplObjectStorage;
+
+/**
+ * An `ext-event` based event loop.
+ *
+ * This uses the [`event` PECL extension](https://pecl.php.net/package/event).
+ * It supports the same backends as libevent.
+ *
+ * This loop is known to work with PHP 5.4 through PHP 7+.
+ *
+ * @link https://pecl.php.net/package/event
+ */
+final class ExtEventLoop implements LoopInterface
+{
+    private $eventBase;
+    private $futureTickQueue;
+    private $timerCallback;
+    private $timerEvents;
+    private $streamCallback;
+    private $readEvents = array();
+    private $writeEvents = array();
+    private $readListeners = array();
+    private $writeListeners = array();
+    private $readRefs = array();
+    private $writeRefs = array();
+    private $running;
+    private $signals;
+    private $signalEvents = array();
+
+    public function __construct()
+    {
+        if (!class_exists('EventBase', false)) {
+            throw new BadMethodCallException('Cannot create ExtEventLoop, ext-event extension missing');
+        }
+
+        $config = new EventBaseConfig();
+        $config->requireFeatures(EventBaseConfig::FEATURE_FDS);
+
+        $this->eventBase = new EventBase($config);
+        $this->futureTickQueue = new FutureTickQueue();
+        $this->timerEvents = new SplObjectStorage();
+        $this->signals = new SignalsHandler();
+
+        $this->createTimerCallback();
+        $this->createStreamCallback();
+    }
+
+    public function addReadStream($stream, $listener)
+    {
+        $key = (int) $stream;
+        if (isset($this->readListeners[$key])) {
+            return;
+        }
+
+        $event = new Event($this->eventBase, $stream, Event::PERSIST | Event::READ, $this->streamCallback);
+        $event->add();
+        $this->readEvents[$key] = $event;
+        $this->readListeners[$key] = $listener;
+
+        // ext-event does not increase refcount on stream resources for PHP 7+
+        // manually keep track of stream resource to prevent premature garbage collection
+        if (PHP_VERSION_ID >= 70000) {
+            $this->readRefs[$key] = $stream;
+        }
+    }
+
+    public function addWriteStream($stream, $listener)
+    {
+        $key = (int) $stream;
+        if (isset($this->writeListeners[$key])) {
+            return;
+        }
+
+        $event = new Event($this->eventBase, $stream, Event::PERSIST | Event::WRITE, $this->streamCallback);
+        $event->add();
+        $this->writeEvents[$key] = $event;
+        $this->writeListeners[$key] = $listener;
+
+        // ext-event does not increase refcount on stream resources for PHP 7+
+        // manually keep track of stream resource to prevent premature garbage collection
+        if (PHP_VERSION_ID >= 70000) {
+            $this->writeRefs[$key] = $stream;
+        }
+    }
+
+    public function removeReadStream($stream)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->readEvents[$key])) {
+            $this->readEvents[$key]->free();
+            unset(
+                $this->readEvents[$key],
+                $this->readListeners[$key],
+                $this->readRefs[$key]
+            );
+        }
+    }
+
+    public function removeWriteStream($stream)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->writeEvents[$key])) {
+            $this->writeEvents[$key]->free();
+            unset(
+                $this->writeEvents[$key],
+                $this->writeListeners[$key],
+                $this->writeRefs[$key]
+            );
+        }
+    }
+
+    public function addTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, false);
+
+        $this->scheduleTimer($timer);
+
+        return $timer;
+    }
+
+    public function addPeriodicTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, true);
+
+        $this->scheduleTimer($timer);
+
+        return $timer;
+    }
+
+    public function cancelTimer(TimerInterface $timer)
+    {
+        if ($this->timerEvents->contains($timer)) {
+            $this->timerEvents[$timer]->free();
+            $this->timerEvents->detach($timer);
+        }
+    }
+
+    public function futureTick($listener)
+    {
+        $this->futureTickQueue->add($listener);
+    }
+
+    public function addSignal($signal, $listener)
+    {
+        $this->signals->add($signal, $listener);
+
+        if (!isset($this->signalEvents[$signal])) {
+            $this->signalEvents[$signal] = Event::signal($this->eventBase, $signal, array($this->signals, 'call'));
+            $this->signalEvents[$signal]->add();
+        }
+    }
+
+    public function removeSignal($signal, $listener)
+    {
+        $this->signals->remove($signal, $listener);
+
+        if (isset($this->signalEvents[$signal]) && $this->signals->count($signal) === 0) {
+            $this->signalEvents[$signal]->free();
+            unset($this->signalEvents[$signal]);
+        }
+    }
+
+    public function run()
+    {
+        $this->running = true;
+
+        while ($this->running) {
+            $this->futureTickQueue->tick();
+
+            $flags = EventBase::LOOP_ONCE;
+            if (!$this->running || !$this->futureTickQueue->isEmpty()) {
+                $flags |= EventBase::LOOP_NONBLOCK;
+            } elseif (!$this->readEvents && !$this->writeEvents && !$this->timerEvents->count() && $this->signals->isEmpty()) {
+                break;
+            }
+
+            $this->eventBase->loop($flags);
+        }
+    }
+
+    public function stop()
+    {
+        $this->running = false;
+    }
+
+    /**
+     * Schedule a timer for execution.
+     *
+     * @param TimerInterface $timer
+     */
+    private function scheduleTimer(TimerInterface $timer)
+    {
+        $flags = Event::TIMEOUT;
+
+        if ($timer->isPeriodic()) {
+            $flags |= Event::PERSIST;
+        }
+
+        $event = new Event($this->eventBase, -1, $flags, $this->timerCallback, $timer);
+        $this->timerEvents[$timer] = $event;
+
+        $event->add($timer->getInterval());
+    }
+
+    /**
+     * Create a callback used as the target of timer events.
+     *
+     * A reference is kept to the callback for the lifetime of the loop
+     * to prevent "Cannot destroy active lambda function" fatal error from
+     * the event extension.
+     */
+    private function createTimerCallback()
+    {
+        $timers = $this->timerEvents;
+        $this->timerCallback = function ($_, $__, $timer) use ($timers) {
+            call_user_func($timer->getCallback(), $timer);
+
+            if (!$timer->isPeriodic() && $timers->contains($timer)) {
+                $this->cancelTimer($timer);
+            }
+        };
+    }
+
+    /**
+     * Create a callback used as the target of stream events.
+     *
+     * A reference is kept to the callback for the lifetime of the loop
+     * to prevent "Cannot destroy active lambda function" fatal error from
+     * the event extension.
+     */
+    private function createStreamCallback()
+    {
+        $read =& $this->readListeners;
+        $write =& $this->writeListeners;
+        $this->streamCallback = function ($stream, $flags) use (&$read, &$write) {
+            $key = (int) $stream;
+
+            if (Event::READ === (Event::READ & $flags) && isset($read[$key])) {
+                call_user_func($read[$key], $stream);
+            }
+
+            if (Event::WRITE === (Event::WRITE & $flags) && isset($write[$key])) {
+                call_user_func($write[$key], $stream);
+            }
+        };
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/ExtLibevLoop.php b/assets/php/vendor/react/event-loop/src/ExtLibevLoop.php
new file mode 100644
index 0000000..d3b0df8
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/ExtLibevLoop.php
@@ -0,0 +1,199 @@
+<?php
+
+namespace React\EventLoop;
+
+use BadMethodCallException;
+use libev\EventLoop;
+use libev\IOEvent;
+use libev\SignalEvent;
+use libev\TimerEvent;
+use React\EventLoop\Tick\FutureTickQueue;
+use React\EventLoop\Timer\Timer;
+use SplObjectStorage;
+
+/**
+ * An `ext-libev` based event loop.
+ *
+ * This uses an [unofficial `libev` extension](https://github.com/m4rw3r/php-libev).
+ * It supports the same backends as libevent.
+ *
+ * This loop does only work with PHP 5.
+ * An update for PHP 7 is [unlikely](https://github.com/m4rw3r/php-libev/issues/8)
+ * to happen any time soon.
+ *
+ * @see https://github.com/m4rw3r/php-libev
+ * @see https://gist.github.com/1688204
+ */
+final class ExtLibevLoop implements LoopInterface
+{
+    private $loop;
+    private $futureTickQueue;
+    private $timerEvents;
+    private $readEvents = array();
+    private $writeEvents = array();
+    private $running;
+    private $signals;
+    private $signalEvents = array();
+
+    public function __construct()
+    {
+        if (!class_exists('libev\EventLoop', false)) {
+            throw new BadMethodCallException('Cannot create ExtLibevLoop, ext-libev extension missing');
+        }
+
+        $this->loop = new EventLoop();
+        $this->futureTickQueue = new FutureTickQueue();
+        $this->timerEvents = new SplObjectStorage();
+        $this->signals = new SignalsHandler();
+    }
+
+    public function addReadStream($stream, $listener)
+    {
+        if (isset($this->readEvents[(int) $stream])) {
+            return;
+        }
+
+        $callback = function () use ($stream, $listener) {
+            call_user_func($listener, $stream);
+        };
+
+        $event = new IOEvent($callback, $stream, IOEvent::READ);
+        $this->loop->add($event);
+
+        $this->readEvents[(int) $stream] = $event;
+    }
+
+    public function addWriteStream($stream, $listener)
+    {
+        if (isset($this->writeEvents[(int) $stream])) {
+            return;
+        }
+
+        $callback = function () use ($stream, $listener) {
+            call_user_func($listener, $stream);
+        };
+
+        $event = new IOEvent($callback, $stream, IOEvent::WRITE);
+        $this->loop->add($event);
+
+        $this->writeEvents[(int) $stream] = $event;
+    }
+
+    public function removeReadStream($stream)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->readEvents[$key])) {
+            $this->readEvents[$key]->stop();
+            $this->loop->remove($this->readEvents[$key]);
+            unset($this->readEvents[$key]);
+        }
+    }
+
+    public function removeWriteStream($stream)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->writeEvents[$key])) {
+            $this->writeEvents[$key]->stop();
+            $this->loop->remove($this->writeEvents[$key]);
+            unset($this->writeEvents[$key]);
+        }
+    }
+
+    public function addTimer($interval, $callback)
+    {
+        $timer = new Timer( $interval, $callback, false);
+
+        $that = $this;
+        $timers = $this->timerEvents;
+        $callback = function () use ($timer, $timers, $that) {
+            call_user_func($timer->getCallback(), $timer);
+
+            if ($timers->contains($timer)) {
+                $that->cancelTimer($timer);
+            }
+        };
+
+        $event = new TimerEvent($callback, $timer->getInterval());
+        $this->timerEvents->attach($timer, $event);
+        $this->loop->add($event);
+
+        return $timer;
+    }
+
+    public function addPeriodicTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, true);
+
+        $callback = function () use ($timer) {
+            call_user_func($timer->getCallback(), $timer);
+        };
+
+        $event = new TimerEvent($callback, $interval, $interval);
+        $this->timerEvents->attach($timer, $event);
+        $this->loop->add($event);
+
+        return $timer;
+    }
+
+    public function cancelTimer(TimerInterface $timer)
+    {
+        if (isset($this->timerEvents[$timer])) {
+            $this->loop->remove($this->timerEvents[$timer]);
+            $this->timerEvents->detach($timer);
+        }
+    }
+
+    public function futureTick($listener)
+    {
+        $this->futureTickQueue->add($listener);
+    }
+
+    public function addSignal($signal, $listener)
+    {
+        $this->signals->add($signal, $listener);
+
+        if (!isset($this->signalEvents[$signal])) {
+            $signals = $this->signals;
+            $this->signalEvents[$signal] = new SignalEvent(function () use ($signals, $signal) {
+                $signals->call($signal);
+            }, $signal);
+            $this->loop->add($this->signalEvents[$signal]);
+        }
+    }
+
+    public function removeSignal($signal, $listener)
+    {
+        $this->signals->remove($signal, $listener);
+
+        if (isset($this->signalEvents[$signal]) && $this->signals->count($signal) === 0) {
+            $this->signalEvents[$signal]->stop();
+            $this->loop->remove($this->signalEvents[$signal]);
+            unset($this->signalEvents[$signal]);
+        }
+    }
+
+    public function run()
+    {
+        $this->running = true;
+
+        while ($this->running) {
+            $this->futureTickQueue->tick();
+
+            $flags = EventLoop::RUN_ONCE;
+            if (!$this->running || !$this->futureTickQueue->isEmpty()) {
+                $flags |= EventLoop::RUN_NOWAIT;
+            } elseif (!$this->readEvents && !$this->writeEvents && !$this->timerEvents->count() && $this->signals->isEmpty()) {
+                break;
+            }
+
+            $this->loop->run($flags);
+        }
+    }
+
+    public function stop()
+    {
+        $this->running = false;
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/ExtLibeventLoop.php b/assets/php/vendor/react/event-loop/src/ExtLibeventLoop.php
new file mode 100644
index 0000000..427f8db
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/ExtLibeventLoop.php
@@ -0,0 +1,283 @@
+<?php
+
+namespace React\EventLoop;
+
+use BadMethodCallException;
+use Event;
+use EventBase;
+use React\EventLoop\Tick\FutureTickQueue;
+use React\EventLoop\Timer\Timer;
+use SplObjectStorage;
+
+/**
+ * An `ext-libevent` based event loop.
+ *
+ * This uses the [`libevent` PECL extension](https://pecl.php.net/package/libevent).
+ * `libevent` itself supports a number of system-specific backends (epoll, kqueue).
+ *
+ * This event loop does only work with PHP 5.
+ * An [unofficial update](https://github.com/php/pecl-event-libevent/pull/2) for
+ * PHP 7 does exist, but it is known to cause regular crashes due to `SEGFAULT`s.
+ * To reiterate: Using this event loop on PHP 7 is not recommended.
+ * Accordingly, the [`Factory`](#factory) will not try to use this event loop on
+ * PHP 7.
+ *
+ * This event loop is known to trigger a readable listener only if
+ * the stream *becomes* readable (edge-triggered) and may not trigger if the
+ * stream has already been readable from the beginning.
+ * This also implies that a stream may not be recognized as readable when data
+ * is still left in PHP's internal stream buffers.
+ * As such, it's recommended to use `stream_set_read_buffer($stream, 0);`
+ * to disable PHP's internal read buffer in this case.
+ * See also [`addReadStream()`](#addreadstream) for more details.
+ *
+ * @link https://pecl.php.net/package/libevent
+ */
+final class ExtLibeventLoop implements LoopInterface
+{
+    /** @internal */
+    const MICROSECONDS_PER_SECOND = 1000000;
+
+    private $eventBase;
+    private $futureTickQueue;
+    private $timerCallback;
+    private $timerEvents;
+    private $streamCallback;
+    private $readEvents = array();
+    private $writeEvents = array();
+    private $readListeners = array();
+    private $writeListeners = array();
+    private $running;
+    private $signals;
+    private $signalEvents = array();
+
+    public function __construct()
+    {
+        if (!function_exists('event_base_new')) {
+            throw new BadMethodCallException('Cannot create ExtLibeventLoop, ext-libevent extension missing');
+        }
+
+        $this->eventBase = event_base_new();
+        $this->futureTickQueue = new FutureTickQueue();
+        $this->timerEvents = new SplObjectStorage();
+        $this->signals = new SignalsHandler();
+
+        $this->createTimerCallback();
+        $this->createStreamCallback();
+    }
+
+    public function addReadStream($stream, $listener)
+    {
+        $key = (int) $stream;
+        if (isset($this->readListeners[$key])) {
+            return;
+        }
+
+        $event = event_new();
+        event_set($event, $stream, EV_PERSIST | EV_READ, $this->streamCallback);
+        event_base_set($event, $this->eventBase);
+        event_add($event);
+
+        $this->readEvents[$key] = $event;
+        $this->readListeners[$key] = $listener;
+    }
+
+    public function addWriteStream($stream, $listener)
+    {
+        $key = (int) $stream;
+        if (isset($this->writeListeners[$key])) {
+            return;
+        }
+
+        $event = event_new();
+        event_set($event, $stream, EV_PERSIST | EV_WRITE, $this->streamCallback);
+        event_base_set($event, $this->eventBase);
+        event_add($event);
+
+        $this->writeEvents[$key] = $event;
+        $this->writeListeners[$key] = $listener;
+    }
+
+    public function removeReadStream($stream)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->readListeners[$key])) {
+            $event = $this->readEvents[$key];
+            event_del($event);
+            event_free($event);
+
+            unset(
+                $this->readEvents[$key],
+                $this->readListeners[$key]
+            );
+        }
+    }
+
+    public function removeWriteStream($stream)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->writeListeners[$key])) {
+            $event = $this->writeEvents[$key];
+            event_del($event);
+            event_free($event);
+
+            unset(
+                $this->writeEvents[$key],
+                $this->writeListeners[$key]
+            );
+        }
+    }
+
+    public function addTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, false);
+
+        $this->scheduleTimer($timer);
+
+        return $timer;
+    }
+
+    public function addPeriodicTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, true);
+
+        $this->scheduleTimer($timer);
+
+        return $timer;
+    }
+
+    public function cancelTimer(TimerInterface $timer)
+    {
+        if ($this->timerEvents->contains($timer)) {
+            $event = $this->timerEvents[$timer];
+            event_del($event);
+            event_free($event);
+
+            $this->timerEvents->detach($timer);
+        }
+    }
+
+    public function futureTick($listener)
+    {
+        $this->futureTickQueue->add($listener);
+    }
+
+    public function addSignal($signal, $listener)
+    {
+        $this->signals->add($signal, $listener);
+
+        if (!isset($this->signalEvents[$signal])) {
+            $this->signalEvents[$signal] = event_new();
+            event_set($this->signalEvents[$signal], $signal, EV_PERSIST | EV_SIGNAL, array($this->signals, 'call'));
+            event_base_set($this->signalEvents[$signal], $this->eventBase);
+            event_add($this->signalEvents[$signal]);
+        }
+    }
+
+    public function removeSignal($signal, $listener)
+    {
+        $this->signals->remove($signal, $listener);
+
+        if (isset($this->signalEvents[$signal]) && $this->signals->count($signal) === 0) {
+            event_del($this->signalEvents[$signal]);
+            event_free($this->signalEvents[$signal]);
+            unset($this->signalEvents[$signal]);
+        }
+    }
+
+    public function run()
+    {
+        $this->running = true;
+
+        while ($this->running) {
+            $this->futureTickQueue->tick();
+
+            $flags = EVLOOP_ONCE;
+            if (!$this->running || !$this->futureTickQueue->isEmpty()) {
+                $flags |= EVLOOP_NONBLOCK;
+            } elseif (!$this->readEvents && !$this->writeEvents && !$this->timerEvents->count() && $this->signals->isEmpty()) {
+                break;
+            }
+
+            event_base_loop($this->eventBase, $flags);
+        }
+    }
+
+    public function stop()
+    {
+        $this->running = false;
+    }
+
+    /**
+     * Schedule a timer for execution.
+     *
+     * @param TimerInterface $timer
+     */
+    private function scheduleTimer(TimerInterface $timer)
+    {
+        $this->timerEvents[$timer] = $event = event_timer_new();
+
+        event_timer_set($event, $this->timerCallback, $timer);
+        event_base_set($event, $this->eventBase);
+        event_add($event, $timer->getInterval() * self::MICROSECONDS_PER_SECOND);
+    }
+
+    /**
+     * Create a callback used as the target of timer events.
+     *
+     * A reference is kept to the callback for the lifetime of the loop
+     * to prevent "Cannot destroy active lambda function" fatal error from
+     * the event extension.
+     */
+    private function createTimerCallback()
+    {
+        $that = $this;
+        $timers = $this->timerEvents;
+        $this->timerCallback = function ($_, $__, $timer) use ($timers, $that) {
+            call_user_func($timer->getCallback(), $timer);
+
+            // Timer already cancelled ...
+            if (!$timers->contains($timer)) {
+                return;
+            }
+
+            // Reschedule periodic timers ...
+            if ($timer->isPeriodic()) {
+                event_add(
+                    $timers[$timer],
+                    $timer->getInterval() * ExtLibeventLoop::MICROSECONDS_PER_SECOND
+                );
+
+            // Clean-up one shot timers ...
+            } else {
+                $that->cancelTimer($timer);
+            }
+        };
+    }
+
+    /**
+     * Create a callback used as the target of stream events.
+     *
+     * A reference is kept to the callback for the lifetime of the loop
+     * to prevent "Cannot destroy active lambda function" fatal error from
+     * the event extension.
+     */
+    private function createStreamCallback()
+    {
+        $read =& $this->readListeners;
+        $write =& $this->writeListeners;
+        $this->streamCallback = function ($stream, $flags) use (&$read, &$write) {
+            $key = (int) $stream;
+
+            if (EV_READ === (EV_READ & $flags) && isset($read[$key])) {
+                call_user_func($read[$key], $stream);
+            }
+
+            if (EV_WRITE === (EV_WRITE & $flags) && isset($write[$key])) {
+                call_user_func($write[$key], $stream);
+            }
+        };
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/Factory.php b/assets/php/vendor/react/event-loop/src/Factory.php
new file mode 100644
index 0000000..b46fc07
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/Factory.php
@@ -0,0 +1,41 @@
+<?php
+
+namespace React\EventLoop;
+
+/**
+ * The `Factory` class exists as a convenient way to pick the best available event loop implementation.
+ */
+final class Factory
+{
+    /**
+     * Creates a new event loop instance
+     *
+     * ```php
+     * $loop = React\EventLoop\Factory::create();
+     * ```
+     *
+     * This method always returns an instance implementing `LoopInterface`,
+     * the actual event loop implementation is an implementation detail.
+     *
+     * This method should usually only be called once at the beginning of the program.
+     *
+     * @return LoopInterface
+     */
+    public static function create()
+    {
+        // @codeCoverageIgnoreStart
+        if (class_exists('libev\EventLoop', false)) {
+            return new ExtLibevLoop();
+        } elseif (class_exists('EvLoop', false)) {
+            return new ExtEvLoop();
+        } elseif (class_exists('EventBase', false)) {
+            return new ExtEventLoop();
+        } elseif (function_exists('event_base_new') && PHP_VERSION_ID < 70000) {
+            // only use ext-libevent on PHP < 7 for now
+            return new ExtLibeventLoop();
+        }
+
+        return new StreamSelectLoop();
+        // @codeCoverageIgnoreEnd
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/LoopInterface.php b/assets/php/vendor/react/event-loop/src/LoopInterface.php
new file mode 100644
index 0000000..1cc8640
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/LoopInterface.php
@@ -0,0 +1,463 @@
+<?php
+
+namespace React\EventLoop;
+
+interface LoopInterface
+{
+    /**
+     * [Advanced] Register a listener to be notified when a stream is ready to read.
+     *
+     * Note that this low-level API is considered advanced usage.
+     * Most use cases should probably use the higher-level
+     * [readable Stream API](https://github.com/reactphp/stream#readablestreaminterface)
+     * instead.
+     *
+     * The first parameter MUST be a valid stream resource that supports
+     * checking whether it is ready to read by this loop implementation.
+     * A single stream resource MUST NOT be added more than once.
+     * Instead, either call [`removeReadStream()`](#removereadstream) first or
+     * react to this event with a single listener and then dispatch from this
+     * listener. This method MAY throw an `Exception` if the given resource type
+     * is not supported by this loop implementation.
+     *
+     * The listener callback function MUST be able to accept a single parameter,
+     * the stream resource added by this method or you MAY use a function which
+     * has no parameters at all.
+     *
+     * The listener callback function MUST NOT throw an `Exception`.
+     * The return value of the listener callback function will be ignored and has
+     * no effect, so for performance reasons you're recommended to not return
+     * any excessive data structures.
+     *
+     * If you want to access any variables within your callback function, you
+     * can bind arbitrary data to a callback closure like this:
+     *
+     * ```php
+     * $loop->addReadStream($stream, function ($stream) use ($name) {
+     *     echo $name . ' said: ' . fread($stream);
+     * });
+     * ```
+     *
+     * See also [example #11](examples).
+     *
+     * You can invoke [`removeReadStream()`](#removereadstream) to remove the
+     * read event listener for this stream.
+     *
+     * The execution order of listeners when multiple streams become ready at
+     * the same time is not guaranteed.
+     *
+     * @param resource $stream   The PHP stream resource to check.
+     * @param callable $listener Invoked when the stream is ready.
+     * @throws \Exception if the given resource type is not supported by this loop implementation
+     * @see self::removeReadStream()
+     */
+    public function addReadStream($stream, $listener);
+
+    /**
+     * [Advanced] Register a listener to be notified when a stream is ready to write.
+     *
+     * Note that this low-level API is considered advanced usage.
+     * Most use cases should probably use the higher-level
+     * [writable Stream API](https://github.com/reactphp/stream#writablestreaminterface)
+     * instead.
+     *
+     * The first parameter MUST be a valid stream resource that supports
+     * checking whether it is ready to write by this loop implementation.
+     * A single stream resource MUST NOT be added more than once.
+     * Instead, either call [`removeWriteStream()`](#removewritestream) first or
+     * react to this event with a single listener and then dispatch from this
+     * listener. This method MAY throw an `Exception` if the given resource type
+     * is not supported by this loop implementation.
+     *
+     * The listener callback function MUST be able to accept a single parameter,
+     * the stream resource added by this method or you MAY use a function which
+     * has no parameters at all.
+     *
+     * The listener callback function MUST NOT throw an `Exception`.
+     * The return value of the listener callback function will be ignored and has
+     * no effect, so for performance reasons you're recommended to not return
+     * any excessive data structures.
+     *
+     * If you want to access any variables within your callback function, you
+     * can bind arbitrary data to a callback closure like this:
+     *
+     * ```php
+     * $loop->addWriteStream($stream, function ($stream) use ($name) {
+     *     fwrite($stream, 'Hello ' . $name);
+     * });
+     * ```
+     *
+     * See also [example #12](examples).
+     *
+     * You can invoke [`removeWriteStream()`](#removewritestream) to remove the
+     * write event listener for this stream.
+     *
+     * The execution order of listeners when multiple streams become ready at
+     * the same time is not guaranteed.
+     *
+     * Some event loop implementations are known to only trigger the listener if
+     * the stream *becomes* readable (edge-triggered) and may not trigger if the
+     * stream has already been readable from the beginning.
+     * This also implies that a stream may not be recognized as readable when data
+     * is still left in PHP's internal stream buffers.
+     * As such, it's recommended to use `stream_set_read_buffer($stream, 0);`
+     * to disable PHP's internal read buffer in this case.
+     *
+     * @param resource $stream   The PHP stream resource to check.
+     * @param callable $listener Invoked when the stream is ready.
+     * @throws \Exception if the given resource type is not supported by this loop implementation
+     * @see self::removeWriteStream()
+     */
+    public function addWriteStream($stream, $listener);
+
+    /**
+     * Remove the read event listener for the given stream.
+     *
+     * Removing a stream from the loop that has already been removed or trying
+     * to remove a stream that was never added or is invalid has no effect.
+     *
+     * @param resource $stream The PHP stream resource.
+     */
+    public function removeReadStream($stream);
+
+    /**
+     * Remove the write event listener for the given stream.
+     *
+     * Removing a stream from the loop that has already been removed or trying
+     * to remove a stream that was never added or is invalid has no effect.
+     *
+     * @param resource $stream The PHP stream resource.
+     */
+    public function removeWriteStream($stream);
+
+    /**
+     * Enqueue a callback to be invoked once after the given interval.
+     *
+     * The timer callback function MUST be able to accept a single parameter,
+     * the timer instance as also returned by this method or you MAY use a
+     * function which has no parameters at all.
+     *
+     * The timer callback function MUST NOT throw an `Exception`.
+     * The return value of the timer callback function will be ignored and has
+     * no effect, so for performance reasons you're recommended to not return
+     * any excessive data structures.
+     *
+     * Unlike [`addPeriodicTimer()`](#addperiodictimer), this method will ensure
+     * the callback will be invoked only once after the given interval.
+     * You can invoke [`cancelTimer`](#canceltimer) to cancel a pending timer.
+     *
+     * ```php
+     * $loop->addTimer(0.8, function () {
+     *     echo 'world!' . PHP_EOL;
+     * });
+     *
+     * $loop->addTimer(0.3, function () {
+     *     echo 'hello ';
+     * });
+     * ```
+     *
+     * See also [example #1](examples).
+     *
+     * If you want to access any variables within your callback function, you
+     * can bind arbitrary data to a callback closure like this:
+     *
+     * ```php
+     * function hello($name, LoopInterface $loop)
+     * {
+     *     $loop->addTimer(1.0, function () use ($name) {
+     *         echo "hello $name\n";
+     *     });
+     * }
+     *
+     * hello('Tester', $loop);
+     * ```
+     *
+     * This interface does not enforce any particular timer resolution, so
+     * special care may have to be taken if you rely on very high precision with
+     * millisecond accuracy or below. Event loop implementations SHOULD work on
+     * a best effort basis and SHOULD provide at least millisecond accuracy
+     * unless otherwise noted. Many existing event loop implementations are
+     * known to provide microsecond accuracy, but it's generally not recommended
+     * to rely on this high precision.
+     *
+     * Similarly, the execution order of timers scheduled to execute at the
+     * same time (within its possible accuracy) is not guaranteed.
+     *
+     * This interface suggests that event loop implementations SHOULD use a
+     * monotonic time source if available. Given that a monotonic time source is
+     * not available on PHP by default, event loop implementations MAY fall back
+     * to using wall-clock time.
+     * While this does not affect many common use cases, this is an important
+     * distinction for programs that rely on a high time precision or on systems
+     * that are subject to discontinuous time adjustments (time jumps).
+     * This means that if you schedule a timer to trigger in 30s and then adjust
+     * your system time forward by 20s, the timer SHOULD still trigger in 30s.
+     * See also [event loop implementations](#loop-implementations) for more details.
+     *
+     * @param int|float $interval The number of seconds to wait before execution.
+     * @param callable  $callback The callback to invoke.
+     *
+     * @return TimerInterface
+     */
+    public function addTimer($interval, $callback);
+
+    /**
+     * Enqueue a callback to be invoked repeatedly after the given interval.
+     *
+     * The timer callback function MUST be able to accept a single parameter,
+     * the timer instance as also returned by this method or you MAY use a
+     * function which has no parameters at all.
+     *
+     * The timer callback function MUST NOT throw an `Exception`.
+     * The return value of the timer callback function will be ignored and has
+     * no effect, so for performance reasons you're recommended to not return
+     * any excessive data structures.
+     *
+     * Unlike [`addTimer()`](#addtimer), this method will ensure the the
+     * callback will be invoked infinitely after the given interval or until you
+     * invoke [`cancelTimer`](#canceltimer).
+     *
+     * ```php
+     * $timer = $loop->addPeriodicTimer(0.1, function () {
+     *     echo 'tick!' . PHP_EOL;
+     * });
+     *
+     * $loop->addTimer(1.0, function () use ($loop, $timer) {
+     *     $loop->cancelTimer($timer);
+     *     echo 'Done' . PHP_EOL;
+     * });
+     * ```
+     *
+     * See also [example #2](examples).
+     *
+     * If you want to limit the number of executions, you can bind
+     * arbitrary data to a callback closure like this:
+     *
+     * ```php
+     * function hello($name, LoopInterface $loop)
+     * {
+     *     $n = 3;
+     *     $loop->addPeriodicTimer(1.0, function ($timer) use ($name, $loop, &$n) {
+     *         if ($n > 0) {
+     *             --$n;
+     *             echo "hello $name\n";
+     *         } else {
+     *             $loop->cancelTimer($timer);
+     *         }
+     *     });
+     * }
+     *
+     * hello('Tester', $loop);
+     * ```
+     *
+     * This interface does not enforce any particular timer resolution, so
+     * special care may have to be taken if you rely on very high precision with
+     * millisecond accuracy or below. Event loop implementations SHOULD work on
+     * a best effort basis and SHOULD provide at least millisecond accuracy
+     * unless otherwise noted. Many existing event loop implementations are
+     * known to provide microsecond accuracy, but it's generally not recommended
+     * to rely on this high precision.
+     *
+     * Similarly, the execution order of timers scheduled to execute at the
+     * same time (within its possible accuracy) is not guaranteed.
+     *
+     * This interface suggests that event loop implementations SHOULD use a
+     * monotonic time source if available. Given that a monotonic time source is
+     * not available on PHP by default, event loop implementations MAY fall back
+     * to using wall-clock time.
+     * While this does not affect many common use cases, this is an important
+     * distinction for programs that rely on a high time precision or on systems
+     * that are subject to discontinuous time adjustments (time jumps).
+     * This means that if you schedule a timer to trigger in 30s and then adjust
+     * your system time forward by 20s, the timer SHOULD still trigger in 30s.
+     * See also [event loop implementations](#loop-implementations) for more details.
+     *
+     * Additionally, periodic timers may be subject to timer drift due to
+     * re-scheduling after each invocation. As such, it's generally not
+     * recommended to rely on this for high precision intervals with millisecond
+     * accuracy or below.
+     *
+     * @param int|float $interval The number of seconds to wait before execution.
+     * @param callable  $callback The callback to invoke.
+     *
+     * @return TimerInterface
+     */
+    public function addPeriodicTimer($interval, $callback);
+
+    /**
+     * Cancel a pending timer.
+     *
+     * See also [`addPeriodicTimer()`](#addperiodictimer) and [example #2](examples).
+     *
+     * Calling this method on a timer instance that has not been added to this
+     * loop instance or on a timer that has already been cancelled has no effect.
+     *
+     * @param TimerInterface $timer The timer to cancel.
+     *
+     * @return void
+     */
+    public function cancelTimer(TimerInterface $timer);
+
+    /**
+     * Schedule a callback to be invoked on a future tick of the event loop.
+     *
+     * This works very much similar to timers with an interval of zero seconds,
+     * but does not require the overhead of scheduling a timer queue.
+     *
+     * The tick callback function MUST be able to accept zero parameters.
+     *
+     * The tick callback function MUST NOT throw an `Exception`.
+     * The return value of the tick callback function will be ignored and has
+     * no effect, so for performance reasons you're recommended to not return
+     * any excessive data structures.
+     *
+     * If you want to access any variables within your callback function, you
+     * can bind arbitrary data to a callback closure like this:
+     *
+     * ```php
+     * function hello($name, LoopInterface $loop)
+     * {
+     *     $loop->futureTick(function () use ($name) {
+     *         echo "hello $name\n";
+     *     });
+     * }
+     *
+     * hello('Tester', $loop);
+     * ```
+     *
+     * Unlike timers, tick callbacks are guaranteed to be executed in the order
+     * they are enqueued.
+     * Also, once a callback is enqueued, there's no way to cancel this operation.
+     *
+     * This is often used to break down bigger tasks into smaller steps (a form
+     * of cooperative multitasking).
+     *
+     * ```php
+     * $loop->futureTick(function () {
+     *     echo 'b';
+     * });
+     * $loop->futureTick(function () {
+     *     echo 'c';
+     * });
+     * echo 'a';
+     * ```
+     *
+     * See also [example #3](examples).
+     *
+     * @param callable $listener The callback to invoke.
+     *
+     * @return void
+     */
+    public function futureTick($listener);
+
+    /**
+     * Register a listener to be notified when a signal has been caught by this process.
+     *
+     * This is useful to catch user interrupt signals or shutdown signals from
+     * tools like `supervisor` or `systemd`.
+     *
+     * The listener callback function MUST be able to accept a single parameter,
+     * the signal added by this method or you MAY use a function which
+     * has no parameters at all.
+     *
+     * The listener callback function MUST NOT throw an `Exception`.
+     * The return value of the listener callback function will be ignored and has
+     * no effect, so for performance reasons you're recommended to not return
+     * any excessive data structures.
+     *
+     * ```php
+     * $loop->addSignal(SIGINT, function (int $signal) {
+     *     echo 'Caught user interrupt signal' . PHP_EOL;
+     * });
+     * ```
+     *
+     * See also [example #4](examples).
+     *
+     * Signaling is only available on Unix-like platform, Windows isn't
+     * supported due to operating system limitations.
+     * This method may throw a `BadMethodCallException` if signals aren't
+     * supported on this platform, for example when required extensions are
+     * missing.
+     *
+     * **Note: A listener can only be added once to the same signal, any
+     * attempts to add it more then once will be ignored.**
+     *
+     * @param int $signal
+     * @param callable $listener
+     *
+     * @throws \BadMethodCallException when signals aren't supported on this
+     *     platform, for example when required extensions are missing.
+     *
+     * @return void
+     */
+    public function addSignal($signal, $listener);
+
+    /**
+     * Removes a previously added signal listener.
+     *
+     * ```php
+     * $loop->removeSignal(SIGINT, $listener);
+     * ```
+     *
+     * Any attempts to remove listeners that aren't registered will be ignored.
+     *
+     * @param int $signal
+     * @param callable $listener
+     *
+     * @return void
+     */
+    public function removeSignal($signal, $listener);
+
+    /**
+     * Run the event loop until there are no more tasks to perform.
+     *
+     * For many applications, this method is the only directly visible
+     * invocation on the event loop.
+     * As a rule of thumb, it is usally recommended to attach everything to the
+     * same loop instance and then run the loop once at the bottom end of the
+     * application.
+     *
+     * ```php
+     * $loop->run();
+     * ```
+     *
+     * This method will keep the loop running until there are no more tasks
+     * to perform. In other words: This method will block until the last
+     * timer, stream and/or signal has been removed.
+     *
+     * Likewise, it is imperative to ensure the application actually invokes
+     * this method once. Adding listeners to the loop and missing to actually
+     * run it will result in the application exiting without actually waiting
+     * for any of the attached listeners.
+     *
+     * This method MUST NOT be called while the loop is already running.
+     * This method MAY be called more than once after it has explicity been
+     * [`stop()`ped](#stop) or after it automatically stopped because it
+     * previously did no longer have anything to do.
+     *
+     * @return void
+     */
+    public function run();
+
+    /**
+     * Instruct a running event loop to stop.
+     *
+     * This method is considered advanced usage and should be used with care.
+     * As a rule of thumb, it is usually recommended to let the loop stop
+     * only automatically when it no longer has anything to do.
+     *
+     * This method can be used to explicitly instruct the event loop to stop:
+     *
+     * ```php
+     * $loop->addTimer(3.0, function () use ($loop) {
+     *     $loop->stop();
+     * });
+     * ```
+     *
+     * Calling this method on a loop instance that is not currently running or
+     * on a loop instance that has already been stopped has no effect.
+     *
+     * @return void
+     */
+    public function stop();
+}
diff --git a/assets/php/vendor/react/event-loop/src/SignalsHandler.php b/assets/php/vendor/react/event-loop/src/SignalsHandler.php
new file mode 100644
index 0000000..523e1ca
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/SignalsHandler.php
@@ -0,0 +1,63 @@
+<?php
+
+namespace React\EventLoop;
+
+/**
+ * @internal
+ */
+final class SignalsHandler
+{
+    private $signals = array();
+
+    public function add($signal, $listener)
+    {
+        if (!isset($this->signals[$signal])) {
+            $this->signals[$signal] = array();
+        }
+
+        if (in_array($listener, $this->signals[$signal])) {
+            return;
+        }
+
+        $this->signals[$signal][] = $listener;
+    }
+
+    public function remove($signal, $listener)
+    {
+        if (!isset($this->signals[$signal])) {
+            return;
+        }
+
+        $index = \array_search($listener, $this->signals[$signal], true);
+        unset($this->signals[$signal][$index]);
+
+        if (isset($this->signals[$signal]) && \count($this->signals[$signal]) === 0) {
+            unset($this->signals[$signal]);
+        }
+    }
+
+    public function call($signal)
+    {
+        if (!isset($this->signals[$signal])) {
+            return;
+        }
+
+        foreach ($this->signals[$signal] as $listener) {
+            \call_user_func($listener, $signal);
+        }
+    }
+
+    public function count($signal)
+    {
+        if (!isset($this->signals[$signal])) {
+            return 0;
+        }
+
+        return \count($this->signals[$signal]);
+    }
+
+    public function isEmpty()
+    {
+        return !$this->signals;
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/StreamSelectLoop.php b/assets/php/vendor/react/event-loop/src/StreamSelectLoop.php
new file mode 100644
index 0000000..e82e9e4
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/StreamSelectLoop.php
@@ -0,0 +1,275 @@
+<?php
+
+namespace React\EventLoop;
+
+use React\EventLoop\Signal\Pcntl;
+use React\EventLoop\Tick\FutureTickQueue;
+use React\EventLoop\Timer\Timer;
+use React\EventLoop\Timer\Timers;
+
+/**
+ * A `stream_select()` based event loop.
+ *
+ * This uses the [`stream_select()`](http://php.net/manual/en/function.stream-select.php)
+ * function and is the only implementation which works out of the box with PHP.
+ *
+ * This event loop works out of the box on PHP 5.4 through PHP 7+ and HHVM.
+ * This means that no installation is required and this library works on all
+ * platforms and supported PHP versions.
+ * Accordingly, the [`Factory`](#factory) will use this event loop by default if
+ * you do not install any of the event loop extensions listed below.
+ *
+ * Under the hood, it does a simple `select` system call.
+ * This system call is limited to the maximum file descriptor number of
+ * `FD_SETSIZE` (platform dependent, commonly 1024) and scales with `O(m)`
+ * (`m` being the maximum file descriptor number passed).
+ * This means that you may run into issues when handling thousands of streams
+ * concurrently and you may want to look into using one of the alternative
+ * event loop implementations listed below in this case.
+ * If your use case is among the many common use cases that involve handling only
+ * dozens or a few hundred streams at once, then this event loop implementation
+ * performs really well.
+ *
+ * If you want to use signal handling (see also [`addSignal()`](#addsignal) below),
+ * this event loop implementation requires `ext-pcntl`.
+ * This extension is only available for Unix-like platforms and does not support
+ * Windows.
+ * It is commonly installed as part of many PHP distributions.
+ * If this extension is missing (or you're running on Windows), signal handling is
+ * not supported and throws a `BadMethodCallException` instead.
+ *
+ * This event loop is known to rely on wall-clock time to schedule future
+ * timers, because a monotonic time source is not available in PHP by default.
+ * While this does not affect many common use cases, this is an important
+ * distinction for programs that rely on a high time precision or on systems
+ * that are subject to discontinuous time adjustments (time jumps).
+ * This means that if you schedule a timer to trigger in 30s and then adjust
+ * your system time forward by 20s, the timer may trigger in 10s.
+ * See also [`addTimer()`](#addtimer) for more details.
+ *
+ * @link http://php.net/manual/en/function.stream-select.php
+ */
+final class StreamSelectLoop implements LoopInterface
+{
+    /** @internal */
+    const MICROSECONDS_PER_SECOND = 1000000;
+
+    private $futureTickQueue;
+    private $timers;
+    private $readStreams = array();
+    private $readListeners = array();
+    private $writeStreams = array();
+    private $writeListeners = array();
+    private $running;
+    private $pcntl = false;
+    private $signals;
+
+    public function __construct()
+    {
+        $this->futureTickQueue = new FutureTickQueue();
+        $this->timers = new Timers();
+        $this->pcntl = extension_loaded('pcntl');
+        $this->signals = new SignalsHandler();
+    }
+
+    public function addReadStream($stream, $listener)
+    {
+        $key = (int) $stream;
+
+        if (!isset($this->readStreams[$key])) {
+            $this->readStreams[$key] = $stream;
+            $this->readListeners[$key] = $listener;
+        }
+    }
+
+    public function addWriteStream($stream, $listener)
+    {
+        $key = (int) $stream;
+
+        if (!isset($this->writeStreams[$key])) {
+            $this->writeStreams[$key] = $stream;
+            $this->writeListeners[$key] = $listener;
+        }
+    }
+
+    public function removeReadStream($stream)
+    {
+        $key = (int) $stream;
+
+        unset(
+            $this->readStreams[$key],
+            $this->readListeners[$key]
+        );
+    }
+
+    public function removeWriteStream($stream)
+    {
+        $key = (int) $stream;
+
+        unset(
+            $this->writeStreams[$key],
+            $this->writeListeners[$key]
+        );
+    }
+
+    public function addTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, false);
+
+        $this->timers->add($timer);
+
+        return $timer;
+    }
+
+    public function addPeriodicTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, true);
+
+        $this->timers->add($timer);
+
+        return $timer;
+    }
+
+    public function cancelTimer(TimerInterface $timer)
+    {
+        $this->timers->cancel($timer);
+    }
+
+    public function futureTick($listener)
+    {
+        $this->futureTickQueue->add($listener);
+    }
+
+    public function addSignal($signal, $listener)
+    {
+        if ($this->pcntl === false) {
+            throw new \BadMethodCallException('Event loop feature "signals" isn\'t supported by the "StreamSelectLoop"');
+        }
+
+        $first = $this->signals->count($signal) === 0;
+        $this->signals->add($signal, $listener);
+
+        if ($first) {
+            \pcntl_signal($signal, array($this->signals, 'call'));
+        }
+    }
+
+    public function removeSignal($signal, $listener)
+    {
+        if (!$this->signals->count($signal)) {
+            return;
+        }
+
+        $this->signals->remove($signal, $listener);
+
+        if ($this->signals->count($signal) === 0) {
+            \pcntl_signal($signal, SIG_DFL);
+        }
+    }
+
+    public function run()
+    {
+        $this->running = true;
+
+        while ($this->running) {
+            $this->futureTickQueue->tick();
+
+            $this->timers->tick();
+
+            // Future-tick queue has pending callbacks ...
+            if (!$this->running || !$this->futureTickQueue->isEmpty()) {
+                $timeout = 0;
+
+            // There is a pending timer, only block until it is due ...
+            } elseif ($scheduledAt = $this->timers->getFirst()) {
+                $timeout = $scheduledAt - $this->timers->getTime();
+                if ($timeout < 0) {
+                    $timeout = 0;
+                } else {
+                    // Convert float seconds to int microseconds.
+                    // Ensure we do not exceed maximum integer size, which may
+                    // cause the loop to tick once every ~35min on 32bit systems.
+                    $timeout *= self::MICROSECONDS_PER_SECOND;
+                    $timeout = $timeout > PHP_INT_MAX ? PHP_INT_MAX : (int)$timeout;
+                }
+
+            // The only possible event is stream or signal activity, so wait forever ...
+            } elseif ($this->readStreams || $this->writeStreams || !$this->signals->isEmpty()) {
+                $timeout = null;
+
+            // There's nothing left to do ...
+            } else {
+                break;
+            }
+
+            $this->waitForStreamActivity($timeout);
+        }
+    }
+
+    public function stop()
+    {
+        $this->running = false;
+    }
+
+    /**
+     * Wait/check for stream activity, or until the next timer is due.
+     *
+     * @param integer|null $timeout Activity timeout in microseconds, or null to wait forever.
+     */
+    private function waitForStreamActivity($timeout)
+    {
+        $read  = $this->readStreams;
+        $write = $this->writeStreams;
+
+        $available = $this->streamSelect($read, $write, $timeout);
+        if ($this->pcntl) {
+            \pcntl_signal_dispatch();
+        }
+        if (false === $available) {
+            // if a system call has been interrupted,
+            // we cannot rely on it's outcome
+            return;
+        }
+
+        foreach ($read as $stream) {
+            $key = (int) $stream;
+
+            if (isset($this->readListeners[$key])) {
+                call_user_func($this->readListeners[$key], $stream);
+            }
+        }
+
+        foreach ($write as $stream) {
+            $key = (int) $stream;
+
+            if (isset($this->writeListeners[$key])) {
+                call_user_func($this->writeListeners[$key], $stream);
+            }
+        }
+    }
+
+    /**
+     * Emulate a stream_select() implementation that does not break when passed
+     * empty stream arrays.
+     *
+     * @param array        &$read   An array of read streams to select upon.
+     * @param array        &$write  An array of write streams to select upon.
+     * @param integer|null $timeout Activity timeout in microseconds, or null to wait forever.
+     *
+     * @return integer|false The total number of streams that are ready for read/write.
+     * Can return false if stream_select() is interrupted by a signal.
+     */
+    private function streamSelect(array &$read, array &$write, $timeout)
+    {
+        if ($read || $write) {
+            $except = null;
+
+            // suppress warnings that occur, when stream_select is interrupted by a signal
+            return @stream_select($read, $write, $except, $timeout === null ? null : 0, $timeout);
+        }
+
+        $timeout && usleep($timeout);
+
+        return 0;
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/Tick/FutureTickQueue.php b/assets/php/vendor/react/event-loop/src/Tick/FutureTickQueue.php
new file mode 100644
index 0000000..c79afc5
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/Tick/FutureTickQueue.php
@@ -0,0 +1,60 @@
+<?php
+
+namespace React\EventLoop\Tick;
+
+use SplQueue;
+
+/**
+ * A tick queue implementation that can hold multiple callback functions
+ *
+ * This class should only be used internally, see LoopInterface instead.
+ *
+ * @see LoopInterface
+ * @internal
+ */
+final class FutureTickQueue
+{
+    private $queue;
+
+    public function __construct()
+    {
+        $this->queue = new SplQueue();
+    }
+
+    /**
+     * Add a callback to be invoked on a future tick of the event loop.
+     *
+     * Callbacks are guaranteed to be executed in the order they are enqueued.
+     *
+     * @param callable $listener The callback to invoke.
+     */
+    public function add($listener)
+    {
+        $this->queue->enqueue($listener);
+    }
+
+    /**
+     * Flush the callback queue.
+     */
+    public function tick()
+    {
+        // Only invoke as many callbacks as were on the queue when tick() was called.
+        $count = $this->queue->count();
+
+        while ($count--) {
+            call_user_func(
+                $this->queue->dequeue()
+            );
+        }
+    }
+
+    /**
+     * Check if the next tick queue is empty.
+     *
+     * @return boolean
+     */
+    public function isEmpty()
+    {
+        return $this->queue->isEmpty();
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/Timer/Timer.php b/assets/php/vendor/react/event-loop/src/Timer/Timer.php
new file mode 100644
index 0000000..da3602a
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/Timer/Timer.php
@@ -0,0 +1,55 @@
+<?php
+
+namespace React\EventLoop\Timer;
+
+use React\EventLoop\TimerInterface;
+
+/**
+ * The actual connection implementation for TimerInterface
+ *
+ * This class should only be used internally, see TimerInterface instead.
+ *
+ * @see TimerInterface
+ * @internal
+ */
+final class Timer implements TimerInterface
+{
+    const MIN_INTERVAL = 0.000001;
+
+    private $interval;
+    private $callback;
+    private $periodic;
+
+    /**
+     * Constructor initializes the fields of the Timer
+     *
+     * @param float         $interval The interval after which this timer will execute, in seconds
+     * @param callable      $callback The callback that will be executed when this timer elapses
+     * @param bool          $periodic Whether the time is periodic
+     */
+    public function __construct($interval, $callback, $periodic = false)
+    {
+        if ($interval < self::MIN_INTERVAL) {
+            $interval = self::MIN_INTERVAL;
+        }
+
+        $this->interval = (float) $interval;
+        $this->callback = $callback;
+        $this->periodic = (bool) $periodic;
+    }
+
+    public function getInterval()
+    {
+        return $this->interval;
+    }
+
+    public function getCallback()
+    {
+        return $this->callback;
+    }
+
+    public function isPeriodic()
+    {
+        return $this->periodic;
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/Timer/Timers.php b/assets/php/vendor/react/event-loop/src/Timer/Timers.php
new file mode 100644
index 0000000..17bbdac
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/Timer/Timers.php
@@ -0,0 +1,109 @@
+<?php
+
+namespace React\EventLoop\Timer;
+
+use React\EventLoop\TimerInterface;
+use SplObjectStorage;
+use SplPriorityQueue;
+
+/**
+ * A scheduler implementation that can hold multiple timer instances
+ *
+ * This class should only be used internally, see TimerInterface instead.
+ *
+ * @see TimerInterface
+ * @internal
+ */
+final class Timers
+{
+    private $time;
+    private $timers;
+    private $scheduler;
+
+    public function __construct()
+    {
+        $this->timers = new SplObjectStorage();
+        $this->scheduler = new SplPriorityQueue();
+    }
+
+    public function updateTime()
+    {
+        return $this->time = microtime(true);
+    }
+
+    public function getTime()
+    {
+        return $this->time ?: $this->updateTime();
+    }
+
+    public function add(TimerInterface $timer)
+    {
+        $interval = $timer->getInterval();
+        $scheduledAt = $interval + microtime(true);
+
+        $this->timers->attach($timer, $scheduledAt);
+        $this->scheduler->insert($timer, -$scheduledAt);
+    }
+
+    public function contains(TimerInterface $timer)
+    {
+        return $this->timers->contains($timer);
+    }
+
+    public function cancel(TimerInterface $timer)
+    {
+        $this->timers->detach($timer);
+    }
+
+    public function getFirst()
+    {
+        while ($this->scheduler->count()) {
+            $timer = $this->scheduler->top();
+
+            if ($this->timers->contains($timer)) {
+                return $this->timers[$timer];
+            }
+
+            $this->scheduler->extract();
+        }
+
+        return null;
+    }
+
+    public function isEmpty()
+    {
+        return count($this->timers) === 0;
+    }
+
+    public function tick()
+    {
+        $time = $this->updateTime();
+        $timers = $this->timers;
+        $scheduler = $this->scheduler;
+
+        while (!$scheduler->isEmpty()) {
+            $timer = $scheduler->top();
+
+            if (!isset($timers[$timer])) {
+                $scheduler->extract();
+                $timers->detach($timer);
+
+                continue;
+            }
+
+            if ($timers[$timer] >= $time) {
+                break;
+            }
+
+            $scheduler->extract();
+            call_user_func($timer->getCallback(), $timer);
+
+            if ($timer->isPeriodic() && isset($timers[$timer])) {
+                $timers[$timer] = $scheduledAt = $timer->getInterval() + $time;
+                $scheduler->insert($timer, -$scheduledAt);
+            } else {
+                $timers->detach($timer);
+            }
+        }
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/TimerInterface.php b/assets/php/vendor/react/event-loop/src/TimerInterface.php
new file mode 100644
index 0000000..cdcf773
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/TimerInterface.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace React\EventLoop;
+
+interface TimerInterface
+{
+    /**
+     * Get the interval after which this timer will execute, in seconds
+     *
+     * @return float
+     */
+    public function getInterval();
+
+    /**
+     * Get the callback that will be executed when this timer elapses
+     *
+     * @return callable
+     */
+    public function getCallback();
+
+    /**
+     * Determine whether the time is periodic
+     *
+     * @return bool
+     */
+    public function isPeriodic();
+}