Added vendor directory to source control

vendor/react/event-loop

@@ -1 +0,0 @@
-Subproject commit be6dee480fc4692cec0504e65eb486e3be1aa6f2

vendor/react/event-loop/CHANGELOG.md

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+# Changelog
+
+## 1.2.0 (2021-07-11)
+
+A major new feature release, see [**release announcement**](https://clue.engineering/2021/announcing-reactphp-default-loop).
+
+*   Feature: Introduce new concept of default loop with the new `Loop` class.
+    (#226 by @WyriHaximus, #229, #231 and #232 by @clue)
+
+    The `Loop` class exists as a convenient global accessor for the event loop.
+    It provides all methods that exist on the `LoopInterface` as static methods and
+    will automatically execute the loop at the end of the program:
+
+    ```php
+    $timer = Loop::addPeriodicTimer(0.1, function () {
+        echo 'Tick' . PHP_EOL;
+    });
+
+    Loop::addTimer(1.0, function () use ($timer) {
+        Loop::cancelTimer($timer);
+        echo 'Done' . PHP_EOL;
+    });
+    ```
+
+    The explicit loop instructions are still valid and may still be useful in some applications,
+    especially for a transition period towards the more concise style.
+    The `Loop::get()` method can be used to get the currently active event loop instance.
+
+    ```php
+    // deprecated
+    $loop = React\EventLoop\Factory::create();
+
+    // new
+    $loop = React\EventLoop\Loop::get();
+    ```
+
+*   Minor documentation improvements and mark legacy extensions as deprecated.
+    (#234 by @SimonFrings, #214 by @WyriHaximus and #233 and #235 by @nhedger)
+
+*   Improve test suite, use GitHub actions for continuous integration (CI),
+    update PHPUnit config and run tests on PHP 8.
+    (#212 and #215 by @SimonFrings and #230 by @clue)
+
+## 1.1.1 (2020-01-01)
+
+*   Fix: Fix reporting connection refused errors with `ExtUvLoop` on Linux and `StreamSelectLoop` on Windows.
+    (#207 and #208 by @clue)
+
+*   Fix: Fix unsupported EventConfig and `SEGFAULT` on shutdown with `ExtEventLoop` on Windows.
+    (#205 by @clue)
+
+*   Fix: Prevent interval overflow for timers very far in the future with `ExtUvLoop`.
+    (#196 by @PabloKowalczyk)
+
+*   Fix: Check PCNTL functions for signal support instead of PCNTL extension with `StreamSelectLoop`.
+    (#195 by @clue)
+
+*   Add `.gitattributes` to exclude dev files from exports.
+    (#201 by @reedy)
+
+*   Improve test suite to fix testing `ExtUvLoop` on Travis,
+    fix Travis CI builds, do not install `libuv` on legacy PHP setups,
+    fix failing test cases due to inaccurate timers,
+    run tests on Windows via Travis CI and
+    run tests on PHP 7.4 and simplify test matrix and test setup.
+    (#197 by @WyriHaximus and #202, #203, #204 and #209 by @clue)
+
+## 1.1.0 (2019-02-07)
+
+*   New UV based event loop (ext-uv).
+    (#112 by @WyriHaximus)
+
+*   Use high resolution timer on PHP 7.3+. 
+    (#182 by @clue)
+
+*   Improve PCNTL signals by using async signal dispatching if available. 
+    (#179 by @CharlotteDunois)
+
+*   Improve test suite and test suite set up.
+    (#174 by @WyriHaximus, #181 by @clue)
+
+*   Fix PCNTL signals edge case. 
+    (#183 by @clue)
+
+## 1.0.0 (2018-07-11)
+
+*   First stable LTS release, now following [SemVer](https://semver.org/).
+    We'd like to emphasize that this component is production ready and battle-tested.
+    We plan to support all long-term support (LTS) releases for at least 24 months,
+    so you have a rock-solid foundation to build on top of.
+
+>   Contains no other changes, so it's actually fully compatible with the v0.5.3 release.
+
+## 0.5.3 (2018-07-09)
+
+*   Improve performance by importing global functions.
+    (#167 by @Ocramius)
+
+*   Improve test suite by simplifying test bootstrap by using dev autoloader.
+    (#169 by @lcobucci)
+
+*   Minor internal changes to improved backward compatibility with PHP 5.3.
+    (#166 by @Donatello-za)
+
+## 0.5.2 (2018-04-24)
+
+*   Feature: Improve memory consumption and runtime performance for `StreamSelectLoop` timers.
+    (#164 by @clue)
+
+*   Improve test suite by removing I/O dependency at `StreamSelectLoopTest` to fix Mac OS X tests.
+    (#161 by @nawarian)
+
+## 0.5.1 (2018-04-09)
+
+*   Feature: New `ExtEvLoop` (PECL ext-ev)  (#148 by @kaduev13)
+
+## 0.5.0 (2018-04-05)
+
+A major feature release with a significant documentation overhaul and long overdue API cleanup!
+
+This update involves a number of BC breaks due to dropped support for deprecated
+functionality. We've tried hard to avoid BC breaks where possible and minimize
+impact otherwise. We expect that most consumers of this package will actually
+not be affected by any BC breaks, see below for more details.
+
+We realize that the changes listed below may seem overwhelming, but we've tried
+to be very clear about any possible BC breaks. Don't worry: In fact, all ReactPHP
+components are already compatible and support both this new release as well as
+providing backwards compatibility with the last release.
+
+*   Feature / BC break: Add support for signal handling via new
+    `LoopInterface::addSignal()` and `LoopInterface::removeSignal()` methods.
+    (#104 by @WyriHaximus and #111 and #150 by @clue)
+
+    ```php
+    $loop->addSignal(SIGINT, function () {
+        echo 'CTRL-C';
+    });
+    ```
+
+*   Feature: Significant documentation updates for `LoopInterface` and `Factory`.
+    (#100, #119, #126, #127, #159 and #160 by @clue, #113 by @WyriHaximus and #81 and #91 by @jsor)
+
+*   Feature: Add examples to ease getting started
+    (#99, #100 and #125 by @clue, #59 by @WyriHaximus and #143 by @jsor)
+
+*   Feature: Documentation for advanced timer concepts, such as monotonic time source vs wall-clock time
+    and high precision timers with millisecond accuracy or below.
+    (#130 and #157 by @clue)
+
+*   Feature: Documentation for advanced stream concepts, such as edge-triggered event listeners
+    and stream buffers and allow throwing Exception if stream resource is not supported.
+    (#129 and #158 by @clue)
+
+*   Feature: Throw `BadMethodCallException` on manual loop creation when required extension isn't installed.
+    (#153 by @WyriHaximus)
+
+*   Feature / BC break: First class support for legacy PHP 5.3 through PHP 7.2 and HHVM
+    and remove all `callable` type hints for consistency reasons.
+    (#141 and #151 by @clue)
+
+*   BC break: Documentation for timer API and clean up unneeded timer API.
+    (#102 by @clue)
+
+    Remove `TimerInterface::cancel()`, use `LoopInterface::cancelTimer()` instead:
+
+    ```php
+    // old (method invoked on timer instance)
+    $timer->cancel();
+    
+    // already supported before: invoke method on loop instance
+    $loop->cancelTimer($timer);
+    ```
+
+    Remove unneeded `TimerInterface::setData()` and `TimerInterface::getData()`,
+    use closure binding to add arbitrary data to timer instead:
+
+    ```php
+    // old (limited setData() and getData() only allows single variable)
+    $name = 'Tester';
+    $timer = $loop->addTimer(1.0, function ($timer) {
+        echo 'Hello ' . $timer->getData() . PHP_EOL;
+    });
+    $timer->setData($name);
+
+    // already supported before: closure binding allows any number of variables
+    $name = 'Tester';
+    $loop->addTimer(1.0, function () use ($name) {
+        echo 'Hello ' . $name . PHP_EOL;
+    });
+    ```
+
+    Remove unneeded `TimerInterface::getLoop()`, use closure binding instead:
+
+    ```php
+    // old (getLoop() called on timer instance)
+    $loop->addTimer(0.1, function ($timer) {
+        $timer->getLoop()->stop();
+    });
+
+    // already supported before: use closure binding as usual
+    $loop->addTimer(0.1, function () use ($loop) {
+        $loop->stop();
+    });
+    ```
+
+*   BC break: Remove unneeded `LoopInterface::isTimerActive()` and
+    `TimerInterface::isActive()` to reduce API surface.
+    (#133 by @clue)
+
+    ```php
+    // old (method on timer instance or on loop instance)
+    $timer->isActive();
+    $loop->isTimerActive($timer);
+    ```
+
+*   BC break: Move `TimerInterface` one level up to `React\EventLoop\TimerInterface`.
+    (#138 by @WyriHaximus)
+
+    ```php
+    // old (notice obsolete "Timer" namespace)
+    assert($timer instanceof React\EventLoop\Timer\TimerInterface);
+
+    // new
+    assert($timer instanceof React\EventLoop\TimerInterface);
+    ```
+
+*   BC break: Remove unneeded `LoopInterface::nextTick()` (and internal `NextTickQueue`),
+    use `LoopInterface::futureTick()` instead.
+    (#30 by @clue)
+
+    ```php
+    // old (removed)
+    $loop->nextTick(function () {
+        echo 'tick';
+    });
+
+    // already supported before
+    $loop->futureTick(function () {
+        echo 'tick';
+    });
+    ```
+
+*   BC break: Remove unneeded `$loop` argument for `LoopInterface::futureTick()`
+    (and fix internal cyclic dependency).
+    (#103 by @clue)
+
+    ```php
+    // old ($loop gets passed by default)
+    $loop->futureTick(function ($loop) {
+        $loop->stop();
+    });
+
+    // already supported before: use closure binding as usual
+    $loop->futureTick(function () use ($loop) {
+        $loop->stop();
+    });
+    ```
+
+*   BC break: Remove unneeded `LoopInterface::tick()`.
+    (#72 by @jsor)
+
+    ```php
+    // old (removed)
+    $loop->tick();
+
+    // suggested work around for testing purposes only
+    $loop->futureTick(function () use ($loop) {
+        $loop->stop();
+    });
+    ```
+
+*   BC break: Documentation for advanced stream API and clean up unneeded stream API.
+    (#110 by @clue)
+
+    Remove unneeded `$loop` argument for `LoopInterface::addReadStream()`
+    and `LoopInterface::addWriteStream()`, use closure binding instead:
+
+    ```php
+    // old ($loop gets passed by default)
+    $loop->addReadStream($stream, function ($stream, $loop) {
+        $loop->removeReadStream($stream);
+    });
+
+    // already supported before: use closure binding as usual
+    $loop->addReadStream($stream, function ($stream) use ($loop) {
+        $loop->removeReadStream($stream);
+    });
+    ```
+
+*   BC break: Remove unneeded `LoopInterface::removeStream()` method,
+    use `LoopInterface::removeReadStream()` and `LoopInterface::removeWriteStream()` instead.
+    (#118 by @clue)
+
+    ```php
+    // old
+    $loop->removeStream($stream);
+
+    // already supported before
+    $loop->removeReadStream($stream);
+    $loop->removeWriteStream($stream);
+    ```
+
+*   BC break: Rename `LibEventLoop` to `ExtLibeventLoop` and `LibEvLoop` to `ExtLibevLoop`
+    for consistent naming for event loop implementations.
+    (#128 by @clue)
+
+*   BC break: Remove optional `EventBaseConfig` argument from `ExtEventLoop`
+    and make its `FEATURE_FDS` enabled by default.
+    (#156 by @WyriHaximus)
+
+*   BC break: Mark all classes as final to discourage inheritance.
+    (#131 by @clue)
+
+*   Fix: Fix `ExtEventLoop` to keep track of stream resources (refcount)
+    (#123 by @clue)
+
+*   Fix: Ensure large timer interval does not overflow on 32bit systems
+    (#132 by @clue)
+
+*   Fix: Fix separately removing readable and writable side of stream when closing
+    (#139 by @clue)
+
+*   Fix: Properly clean up event watchers for `ext-event` and `ext-libev`
+    (#149 by @clue)
+
+*   Fix: Minor code cleanup and remove unneeded references
+    (#145 by @seregazhuk)
+
+*   Fix: Discourage outdated `ext-libevent` on PHP 7
+    (#62 by @cboden)
+
+*   Improve test suite by adding forward compatibility with PHPUnit 6 and PHPUnit 5,
+    lock Travis distro so new defaults will not break the build,
+    improve test suite to be less fragile and increase test timeouts,
+    test against PHP 7.2 and reduce fwrite() call length to one chunk.
+    (#106 and #144 by @clue, #120 and #124 by @carusogabriel, #147 by nawarian and #92 by @kelunik)
+
+*   A number of changes were originally planned for this release but have been backported
+    to the last `v0.4.3` already: #74, #76, #79, #81 (refs #65, #66, #67), #88 and #93
+
+## 0.4.3 (2017-04-27)
+
+* Bug fix: Bugfix in the usage sample code #57 (@dandelionred) 
+* Improvement: Remove branch-alias definition #53 (@WyriHaximus)
+* Improvement: StreamSelectLoop: Use fresh time so Timers added during stream events are accurate #51 (@andrewminerd)
+* Improvement: Avoid deprecation warnings in test suite due to deprecation of getMock() in PHPUnit #68 (@martinschroeder)
+* Improvement: Add PHPUnit 4.8 to require-dev #69 (@shaunbramley)
+* Improvement: Increase test timeouts for HHVM and unify timeout handling #70 (@clue)
+* Improvement: Travis improvements (backported from #74) #75 (@clue)
+* Improvement: Test suite now uses socket pairs instead of memory streams #66 (@martinschroeder)
+* Improvement: StreamSelectLoop: Test suite uses signal constant names in data provider #67 (@martinschroeder)
+* Improvement: ExtEventLoop: No longer suppress all errors #65 (@mamciek)
+* Improvement: Readme cleanup #89 (@jsor)
+* Improvement: Restructure and improve README #90 (@jsor)
+* Bug fix: StreamSelectLoop: Fix erroneous zero-time sleep (backport to 0.4) #94 (@jsor)
+
+## 0.4.2 (2016-03-07)
+
+* Bug fix: No longer error when signals sent to StreamSelectLoop
+* Support HHVM and PHP7 (@ondrejmirtes, @cebe)
+* Feature: Added support for EventConfig for ExtEventLoop (@steverhoades)
+* Bug fix: Fixed an issue loading loop extension libs via autoloader (@czarpino)
+
+## 0.4.1 (2014-04-13)
+
+* Bug fix: null timeout in StreamSelectLoop causing 100% CPU usage (@clue)
+* Bug fix: v0.3.4 changes merged for v0.4.1
+
+## 0.4.0 (2014-02-02)
+
+* Feature: Added `EventLoopInterface::nextTick()`, implemented in all event loops (@jmalloc)
+* Feature: Added `EventLoopInterface::futureTick()`, implemented in all event loops (@jmalloc)
+* Feature: Added `ExtEventLoop` implementation using pecl/event (@jmalloc)
+* BC break: Bump minimum PHP version to PHP 5.4, remove 5.3 specific hacks
+* BC break: New method: `EventLoopInterface::nextTick()`
+* BC break: New method: `EventLoopInterface::futureTick()`
+* Dependency: Autoloading and filesystem structure now PSR-4 instead of PSR-0
+
+## 0.3.5 (2016-12-28)
+
+This is a compatibility release that eases upgrading to the v0.4 release branch.
+You should consider upgrading to the v0.4 release branch.
+
+* Feature: Cap min timer interval at 1µs, thus improving compatibility with v0.4
+  (#47 by @clue)
+
+## 0.3.4 (2014-03-30)
+
+* Bug fix: Changed StreamSelectLoop to use non-blocking behavior on tick() (@astephens25)
+
+## 0.3.3 (2013-07-08)
+
+* Bug fix: No error on removing non-existent streams (@clue)
+* Bug fix: Do not silently remove feof listeners in `LibEvLoop`
+
+## 0.3.0 (2013-04-14)
+
+* BC break: New timers API (@nrk)
+* BC break: Remove check on return value from stream callbacks (@nrk)
+
+## 0.2.7 (2013-01-05)
+
+* Bug fix: Fix libevent timers with PHP 5.3
+* Bug fix: Fix libevent timer cancellation (@nrk)
+
+## 0.2.6 (2012-12-26)
+
+* Bug fix: Plug memory issue in libevent timers (@cameronjacobson)
+* Bug fix: Correctly pause LibEvLoop on stop()
+
+## 0.2.3 (2012-11-14)
+
+* Feature: LibEvLoop, integration of `php-libev`
+
+## 0.2.0 (2012-09-10)
+
+* Version bump
+
+## 0.1.1 (2012-07-12)
+
+* Version bump
+
+## 0.1.0 (2012-07-11)
+
+* First tagged release

vendor/react/event-loop/LICENSE

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2012 Christian Lück, Cees-Jan Kiewiet, Jan Sorgalla, Chris Boden, Igor Wiedler
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

vendor/react/event-loop/README.md

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+# EventLoop Component
+
+[![CI status](https://github.com/reactphp/event-loop/workflows/CI/badge.svg)](https://github.com/reactphp/event-loop/actions)
+
+[ReactPHP](https://reactphp.org/)'s core reactor event loop that libraries can use for evented I/O.
+
+In order for async based libraries to be interoperable, they need to use the
+same event loop. This component provides a common `LoopInterface` that any
+library can target. This allows them to be used in the same loop, with one
+single [`run()`](#run) call that is controlled by the user.
+
+**Table of Contents**
+
+* [Quickstart example](#quickstart-example)
+* [Usage](#usage)
+    * [Loop](#loop)
+        * [Loop methods](#loop-methods)
+        * [Loop autorun](#loop-autorun)
+        * [get()](#get)
+    * [~~Factory~~](#factory)
+        * [~~create()~~](#create)
+    * [Loop implementations](#loop-implementations)
+        * [StreamSelectLoop](#streamselectloop)
+        * [ExtEventLoop](#exteventloop)
+        * [ExtEvLoop](#extevloop)
+        * [ExtUvLoop](#extuvloop)
+        * [~~ExtLibeventLoop~~](#extlibeventloop)
+        * [~~ExtLibevLoop~~](#extlibevloop)
+    * [LoopInterface](#loopinterface)
+        * [run()](#run)
+        * [stop()](#stop)
+        * [addTimer()](#addtimer)
+        * [addPeriodicTimer()](#addperiodictimer)
+        * [cancelTimer()](#canceltimer)
+        * [futureTick()](#futuretick)
+        * [addSignal()](#addsignal)
+        * [removeSignal()](#removesignal)
+        * [addReadStream()](#addreadstream)
+        * [addWriteStream()](#addwritestream)
+        * [removeReadStream()](#removereadstream)
+        * [removeWriteStream()](#removewritestream)
+* [Install](#install)
+* [Tests](#tests)
+* [License](#license)
+* [More](#more)
+
+## Quickstart example
+
+Here is an async HTTP server built with just the event loop.
+
+```php
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/vendor/autoload.php';
+
+$server = stream_socket_server('tcp://127.0.0.1:8080');
+stream_set_blocking($server, false);
+
+Loop::addReadStream($server, function ($server) {
+    $conn = stream_socket_accept($server);
+    $data = "HTTP/1.1 200 OK\r\nContent-Length: 3\r\n\r\nHi\n";
+    Loop::addWriteStream($conn, function ($conn) use (&$data) {
+        $written = fwrite($conn, $data);
+        if ($written === strlen($data)) {
+            fclose($conn);
+            Loop::removeWriteStream($conn);
+        } else {
+            $data = substr($data, $written);
+        }
+    });
+});
+
+Loop::addPeriodicTimer(5, function () {
+    $memory = memory_get_usage() / 1024;
+    $formatted = number_format($memory, 3).'K';
+    echo "Current memory usage: {$formatted}\n";
+});
+```
+
+See also the [examples](examples).
+
+## Usage
+
+As of `v1.2.0`, typical applications would use the [`Loop` object](#loop)
+to use the currently active event loop like this:
+
+```php
+use React\EventLoop\Loop;
+
+$timer = Loop::addPeriodicTimer(0.1, function () {
+    echo 'Tick' . PHP_EOL;
+});
+
+Loop::addTimer(1.0, function () use ($timer) {
+    Loop::cancelTimer($timer);
+    echo 'Done' . PHP_EOL;
+});
+```
+
+As an alternative, you can also explicitly create an event loop instance at the
+beginning, reuse it throughout your program and finally run it at the end of the
+program like this:
+
+```php
+$loop = React\EventLoop\Loop::get(); // or deprecated React\EventLoop\Factory::create();
+
+$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;
+});
+
+$loop->run();
+```
+
+While the former is more concise, the latter is more explicit.
+In both cases, the program would perform the exact same steps.
+
+1. The event loop instance is created at the beginning of the program. This is
+   implicitly done the first time you call the [`Loop` class](#loop) or
+   explicitly when using the deprecated [`Factory::create() method`](#create)
+   (or manually instantiating any of the [loop implementations](#loop-implementations)).
+2. The event loop is used directly or passed as an instance to library and
+   application code. In this example, a periodic timer is registered with the
+   event loop which simply outputs `Tick` every fraction of a second until another
+   timer stops the periodic timer after a second.
+3. The event loop is run at the end of the program. This is automatically done
+   when using [`Loop` class](#loop) or explicitly with a single [`run()`](#run)
+   call at the end of the program.
+
+As of `v1.2.0`, we highly recommend using the [`Loop` class](#loop).
+The explicit loop instructions are still valid and may still be useful in some
+applications, especially for a transition period towards the more concise style.
+
+### Loop
+
+The `Loop` class exists as a convenient global accessor for the event loop.
+
+#### Loop methods
+
+The `Loop` class provides all methods that exist on the [`LoopInterface`](#loopinterface)
+as static methods:
+
+* [run()](#run)
+* [stop()](#stop)
+* [addTimer()](#addtimer)
+* [addPeriodicTimer()](#addperiodictimer)
+* [cancelTimer()](#canceltimer)
+* [futureTick()](#futuretick)
+* [addSignal()](#addsignal)
+* [removeSignal()](#removesignal)
+* [addReadStream()](#addreadstream)
+* [addWriteStream()](#addwritestream)
+* [removeReadStream()](#removereadstream)
+* [removeWriteStream()](#removewritestream)
+
+If you're working with the event loop in your application code, it's often
+easiest to directly interface with the static methods defined on the `Loop` class
+like this:
+
+```php
+use React\EventLoop\Loop;
+
+$timer = Loop::addPeriodicTimer(0.1, function () {
+    echo 'Tick' . PHP_EOL;
+});
+
+Loop::addTimer(1.0, function () use ($timer) {
+    Loop::cancelTimer($timer);
+    echo 'Done' . PHP_EOL;
+});
+```
+
+On the other hand, if you're familiar with object-oriented programming (OOP) and
+dependency injection (DI), you may want to inject an event loop instance and
+invoke instance methods on the `LoopInterface` like this:
+
+```php
+use React\EventLoop\Loop;
+use React\EventLoop\LoopInterface;
+
+class Greeter
+{
+    private $loop;
+
+    public function __construct(LoopInterface $loop)
+    {
+        $this->loop = $loop;
+    }
+
+    public function greet(string $name)
+    {
+        $this->loop->addTimer(1.0, function () use ($name) {
+            echo 'Hello ' . $name . '!' . PHP_EOL;
+        });
+    }
+}
+
+$greeter = new Greeter(Loop::get());
+$greeter->greet('Alice');
+$greeter->greet('Bob');
+```
+
+Each static method call will be forwarded as-is to the underlying event loop
+instance by using the [`Loop::get()`](#get) call internally.
+See [`LoopInterface`](#loopinterface) for more details about available methods.
+
+#### Loop autorun
+
+When using the `Loop` class, it will automatically execute the loop at the end of
+the program. This means the following example will schedule a timer and will
+automatically execute the program until the timer event fires:
+
+```php
+use React\EventLoop\Loop;
+
+Loop::addTimer(1.0, function () {
+    echo 'Hello' . PHP_EOL;
+});
+```
+
+As of `v1.2.0`, we highly recommend using the `Loop` class this way and omitting any
+explicit [`run()`](#run) calls. For BC reasons, the explicit [`run()`](#run)
+method is still valid and may still be useful in some applications, especially
+for a transition period towards the more concise style.
+
+If you don't want the `Loop` to run automatically, you can either explicitly
+[`run()`](#run) or [`stop()`](#stop) it. This can be useful if you're using
+a global exception handler like this:
+
+```php
+use React\EventLoop\Loop;
+
+Loop::addTimer(10.0, function () {
+    echo 'Never happens';
+});
+
+set_exception_handler(function (Throwable $e) {
+    echo 'Error: ' . $e->getMessage() . PHP_EOL;
+    Loop::stop();
+});
+
+throw new RuntimeException('Demo');
+```
+
+#### get()
+
+The `get(): LoopInterface` method can be used to
+get the currently active event loop instance.
+
+This method will always return the same event loop instance throughout the
+lifetime of your application.
+
+```php
+use React\EventLoop\Loop;
+use React\EventLoop\LoopInterface;
+
+$loop = Loop::get();
+
+assert($loop instanceof LoopInterface);
+assert($loop === Loop::get());
+```
+
+This is particularly useful if you're using object-oriented programming (OOP)
+and dependency injection (DI). In this case, you may want to inject an event
+loop instance and invoke instance methods on the `LoopInterface` like this:
+
+```php
+use React\EventLoop\Loop;
+use React\EventLoop\LoopInterface;
+
+class Greeter
+{
+    private $loop;
+
+    public function __construct(LoopInterface $loop)
+    {
+        $this->loop = $loop;
+    }
+
+    public function greet(string $name)
+    {
+        $this->loop->addTimer(1.0, function () use ($name) {
+            echo 'Hello ' . $name . '!' . PHP_EOL;
+        });
+    }
+}
+
+$greeter = new Greeter(Loop::get());
+$greeter->greet('Alice');
+$greeter->greet('Bob');
+```
+
+See [`LoopInterface`](#loopinterface) for more details about available methods.
+
+### ~~Factory~~
+
+> Deprecated since v1.2.0, see [`Loop` class](#loop) instead.
+
+The deprecated `Factory` class exists as a convenient way to pick the best available
+[event loop implementation](#loop-implementations).
+
+#### ~~create()~~
+
+> Deprecated since v1.2.0, see [`Loop::get()`](#get) instead.
+
+The deprecated `create(): LoopInterface` method can be used to
+create a new event loop instance:
+
+```php
+// deprecated
+$loop = React\EventLoop\Factory::create();
+
+// new
+$loop = React\EventLoop\Loop::get();
+```
+
+This method always returns an instance implementing [`LoopInterface`](#loopinterface),
+the actual [event loop implementation](#loop-implementations) is an implementation detail.
+
+This method should usually only be called once at the beginning of the program.
+
+### Loop implementations
+
+In addition to the [`LoopInterface`](#loopinterface), there are a number of
+event loop implementations provided.
+
+All of the event loops support these features:
+
+* File descriptor polling
+* One-off timers
+* Periodic timers
+* Deferred execution on future loop tick
+
+For most consumers of this package, the underlying event loop implementation is
+an implementation detail.
+You should use the [`Factory`](#factory) to automatically create a new instance.
+
+Advanced! If you explicitly need a certain event loop implementation, you can
+manually instantiate one of the following classes.
+Note that you may have to install the required PHP extensions for the respective
+event loop implementation first or they will throw a `BadMethodCallException` on creation.
+
+#### StreamSelectLoop
+
+A `stream_select()` based event loop.
+
+This uses the [`stream_select()`](https://www.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 5.3 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
+when using any version before PHP 7.3, because a monotonic time source is
+only available as of PHP 7.3 (`hrtime()`).
+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 on PHP < 7.3 and
+then adjust your system time forward by 20s, the timer may trigger in 10s.
+See also [`addTimer()`](#addtimer) for more details.
+
+#### ExtEventLoop
+
+An `ext-event` based event loop.
+
+This uses the [`event` PECL extension](https://pecl.php.net/package/event),
+that provides an interface to `libevent` library.
+`libevent` itself supports a number of system-specific backends (epoll, kqueue).
+
+This loop is known to work with PHP 5.4 through PHP 7+.
+
+#### ExtEvLoop
+
+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.
+`libev` itself supports a number of system-specific backends (epoll, kqueue).
+
+
+This loop is known to work with PHP 5.4 through PHP 7+.
+
+#### ExtUvLoop
+
+An `ext-uv` based event loop.
+
+This loop uses the [`uv` PECL extension](https://pecl.php.net/package/uv),
+that provides an interface to `libuv` library.
+`libuv` itself supports a number of system-specific backends (epoll, kqueue).
+
+This loop is known to work with PHP 7+.
+
+#### ~~ExtLibeventLoop~~
+
+> Deprecated since v1.2.0, use [`ExtEventLoop`](#exteventloop) instead.
+
+An `ext-libevent` based event loop.
+
+This uses the [`libevent` PECL extension](https://pecl.php.net/package/libevent),
+that provides an interface to `libevent` library.
+`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($stream, 0);`
+to disable PHP's internal read buffer in this case.
+See also [`addReadStream()`](#addreadstream) for more details.
+
+#### ~~ExtLibevLoop~~
+
+> Deprecated since v1.2.0, use [`ExtEvLoop`](#extevloop) instead.
+
+An `ext-libev` based event loop.
+
+This uses an [unofficial `libev` extension](https://github.com/m4rw3r/php-libev),
+that provides an interface to `libev` library.
+`libev` itself supports a number of system-specific backends (epoll, kqueue).
+
+This loop does only work with PHP 5.
+An update for PHP 7 is [unlikely](https://github.com/m4rw3r/php-libev/issues/8)
+to happen any time soon.
+
+### LoopInterface
+
+#### run()
+
+The `run(): void` method can be used to
+run the event loop until there are no more tasks to perform.
+
+For many applications, this method is the only directly visible
+invocation on the event loop.
+As a rule of thumb, it is usally recommended to attach everything to the
+same loop instance and then run the loop once at the bottom end of the
+application.
+
+```php
+$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.
+
+#### stop()
+
+The `stop(): void` method can be used to
+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.
+
+#### addTimer()
+
+The `addTimer(float $interval, callable $callback): TimerInterface` method can be used to
+enqueue a callback to be invoked once after the given interval.
+
+The timer callback function MUST be able to accept a single parameter,
+the timer instance as also returned by this method or you MAY use a
+function which has no parameters at all.
+
+The timer callback function MUST NOT throw an `Exception`.
+The return value of the timer callback function will be ignored and has
+no effect, so for performance reasons you're recommended to not return
+any excessive data structures.
+
+Unlike [`addPeriodicTimer()`](#addperiodictimer), this method will ensure
+the callback will be invoked only once after the given interval.
+You can invoke [`cancelTimer`](#canceltimer) to cancel a pending timer.
+
+```php
+$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
+only available as of PHP 7.3 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.
+
+#### addPeriodicTimer()
+
+The `addPeriodicTimer(float $interval, callable $callback): TimerInterface` method can be used to
+enqueue a callback to be invoked repeatedly after the given interval.
+
+The timer callback function MUST be able to accept a single parameter,
+the timer instance as also returned by this method or you MAY use a
+function which has no parameters at all.
+
+The timer callback function MUST NOT throw an `Exception`.
+The return value of the timer callback function will be ignored and has
+no effect, so for performance reasons you're recommended to not return
+any excessive data structures.
+
+Unlike [`addTimer()`](#addtimer), this method will ensure the the
+callback will be invoked infinitely after the given interval or until you
+invoke [`cancelTimer`](#canceltimer).
+
+```php
+$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
+only available as of PHP 7.3 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.
+
+#### cancelTimer()
+
+The `cancelTimer(TimerInterface $timer): void` method can be used to
+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.
+
+#### futureTick()
+
+The `futureTick(callable $listener): void` method can be used to
+schedule a callback to be invoked on a future tick of the event loop.
+
+This works very much similar to timers with an interval of zero seconds,
+but does not require the overhead of scheduling a timer queue.
+
+The tick callback function MUST be able to accept zero parameters.
+
+The tick callback function MUST NOT throw an `Exception`.
+The return value of the tick callback function will be ignored and has
+no effect, so for performance reasons you're recommended to not return
+any excessive data structures.
+
+If you want to access any variables within your callback function, you
+can bind arbitrary data to a callback closure like this:
+
+```php
+function hello($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).
+
+#### addSignal()
+
+The `addSignal(int $signal, callable $listener): void` method can be used to
+register a listener to be notified when a signal has been caught by this process.
+
+This is useful to catch user interrupt signals or shutdown signals from
+tools like `supervisor` or `systemd`.
+
+The listener callback function MUST be able to accept a single parameter,
+the signal added by this method or you MAY use a function which
+has no parameters at all.
+
+The listener callback function MUST NOT throw an `Exception`.
+The return value of the listener callback function will be ignored and has
+no effect, so for performance reasons you're recommended to not return
+any excessive data structures.
+
+```php
+$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.**
+
+#### removeSignal()
+
+The `removeSignal(int $signal, callable $listener): void` method can be used to
+remove a previously added signal listener.
+
+```php
+$loop->removeSignal(SIGINT, $listener);
+```
+
+Any attempts to remove listeners that aren't registered will be ignored.
+
+#### addReadStream()
+
+> Advanced! 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 `addReadStream(resource $stream, callable $callback): void` method can be used to
+register a listener to be notified when a stream is ready to read.
+
+The first parameter MUST be a valid stream resource that supports
+checking whether it is ready to read by this loop implementation.
+A single stream resource MUST NOT be added more than once.
+Instead, either call [`removeReadStream()`](#removereadstream) first or
+react to this event with a single listener and then dispatch from this
+listener. This method MAY throw an `Exception` if the given resource type
+is not supported by this loop implementation.
+
+The listener callback function MUST be able to accept a single parameter,
+the stream resource added by this method or you MAY use a function which
+has no parameters at all.
+
+The listener callback function MUST NOT throw an `Exception`.
+The return value of the listener callback function will be ignored and has
+no effect, so for performance reasons you're recommended to not return
+any excessive data structures.
+
+If you want to access any variables within your callback function, you
+can bind arbitrary data to a callback closure like this:
+
+```php
+$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.
+
+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.
+
+#### addWriteStream()
+
+> Advanced! 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 `addWriteStream(resource $stream, callable $callback): void` method can be used to
+register a listener to be notified when a stream is ready to write.
+
+The first parameter MUST be a valid stream resource that supports
+checking whether it is ready to write by this loop implementation.
+A single stream resource MUST NOT be added more than once.
+Instead, either call [`removeWriteStream()`](#removewritestream) first or
+react to this event with a single listener and then dispatch from this
+listener. This method MAY throw an `Exception` if the given resource type
+is not supported by this loop implementation.
+
+The listener callback function MUST be able to accept a single parameter,
+the stream resource added by this method or you MAY use a function which
+has no parameters at all.
+
+The listener callback function MUST NOT throw an `Exception`.
+The return value of the listener callback function will be ignored and has
+no effect, so for performance reasons you're recommended to not return
+any excessive data structures.
+
+If you want to access any variables within your callback function, you
+can bind arbitrary data to a callback closure like this:
+
+```php
+$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.
+
+#### removeReadStream()
+
+The `removeReadStream(resource $stream): void` method can be used to
+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.
+
+#### removeWriteStream()
+
+The `removeWriteStream(resource $stream): void` method can be used to
+remove the write event listener for the given stream.
+
+Removing a stream from the loop that has already been removed or trying
+to remove a stream that was never added or is invalid has no effect.
+
+## Install
+
+The recommended way to install this library is [through Composer](https://getcomposer.org).
+[New to Composer?](https://getcomposer.org/doc/00-intro.md)
+
+This project follows [SemVer](https://semver.org/).
+This will install the latest supported version:
+
+```bash
+$ composer require react/event-loop:^1.2
+```
+
+See also the [CHANGELOG](CHANGELOG.md) for details about version upgrades.
+
+This project aims to run on any platform and thus does not require any PHP
+extensions and supports running on legacy PHP 5.3 through current PHP 8+ and
+HHVM.
+It's *highly recommended to use PHP 7+* for this project.
+
+Installing any of the event loop extensions is suggested, but entirely optional.
+See also [event loop implementations](#loop-implementations) for more details.
+
+## Tests
+
+To run the test suite, you first need to clone this repo and then install all
+dependencies [through Composer](https://getcomposer.org):
+
+```bash
+$ composer install
+```
+
+To run the test suite, go to the project root and run:
+
+```bash
+$ php vendor/bin/phpunit
+```
+
+## License
+
+MIT, see [LICENSE file](LICENSE).
+
+## More
+
+* See our [Stream component](https://github.com/reactphp/stream) for more
+  information on how streams are used in real-world applications.
+* See our [users wiki](https://github.com/reactphp/react/wiki/Users) and the
+  [dependents on Packagist](https://packagist.org/packages/react/event-loop/dependents)
+  for a list of packages that use the EventLoop in real-world applications.

vendor/react/event-loop/composer.json

@@ -0,0 +1,49 @@
+{
+    "name": "react/event-loop",
+    "description": "ReactPHP's core reactor event loop that libraries can use for evented I/O.",
+    "keywords": ["event-loop", "asynchronous"],
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Christian Lück",
+            "homepage": "https://clue.engineering/",
+            "email": "christian@clue.engineering"
+        },
+        {
+            "name": "Cees-Jan Kiewiet",
+            "homepage": "https://wyrihaximus.net/",
+            "email": "reactphp@ceesjankiewiet.nl"
+        },
+        {
+            "name": "Jan Sorgalla",
+            "homepage": "https://sorgalla.com/",
+            "email": "jsorgalla@gmail.com"
+        },
+        {
+            "name": "Chris Boden",
+            "homepage": "https://cboden.dev/",
+            "email": "cboden@gmail.com"
+        }
+    ],
+    "require": {
+        "php": ">=5.3.0"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^9.3 || ^5.7 || ^4.8.35"
+    },
+    "suggest": {
+        "ext-event": "~1.0 for ExtEventLoop",
+        "ext-pcntl": "For signal handling support when using the StreamSelectLoop",
+        "ext-uv": "* for ExtUvLoop"
+    },
+    "autoload": {
+        "psr-4": {
+            "React\\EventLoop\\": "src"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "React\\Tests\\EventLoop\\": "tests"
+        }
+    }
+}

vendor/react/event-loop/examples/01-timers.php

@@ -0,0 +1,13 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+Loop::addTimer(0.8, function () {
+    echo 'world!' . PHP_EOL;
+});
+
+Loop::addTimer(0.3, function () {
+    echo 'hello ';
+});

vendor/react/event-loop/examples/02-periodic.php

@@ -0,0 +1,14 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$timer = Loop::addPeriodicTimer(0.1, function () {
+    echo 'Tick' . PHP_EOL;
+});
+
+Loop::addTimer(1.0, function () use ($timer) {
+    Loop::cancelTimer($timer);
+    echo 'Done' . PHP_EOL;
+});

vendor/react/event-loop/examples/03-ticks.php

@@ -0,0 +1,13 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+Loop::futureTick(function () {
+    echo 'b';
+});
+Loop::futureTick(function () {
+    echo 'c';
+});
+echo 'a';

vendor/react/event-loop/examples/04-signals.php

@@ -0,0 +1,17 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+if (!defined('SIGINT')) {
+    fwrite(STDERR, 'Not supported on your platform (ext-pcntl missing or Windows?)' . PHP_EOL);
+    exit(1);
+}
+
+Loop::addSignal(SIGINT, $func = function ($signal) use (&$func) {
+    echo 'Signal: ', (string)$signal, PHP_EOL;
+    Loop::removeSignal(SIGINT, $func);
+});
+
+echo 'Listening for SIGINT. Use "kill -SIGINT ' . getmypid() . '" or CTRL+C' . PHP_EOL;

vendor/react/event-loop/examples/11-consume-stdin.php

@@ -0,0 +1,26 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+if (!defined('STDIN') || stream_set_blocking(STDIN, false) !== true) {
+    fwrite(STDERR, 'ERROR: Unable to set STDIN non-blocking (not CLI or Windows?)' . PHP_EOL);
+    exit(1);
+}
+
+// read everything from STDIN and report number of bytes
+// for illustration purposes only, should use react/stream instead
+Loop::addReadStream(STDIN, function ($stream) {
+    $chunk = fread($stream, 64 * 1024);
+
+    // reading nothing means we reached EOF
+    if ($chunk === '') {
+        Loop::removeReadStream($stream);
+        stream_set_blocking($stream, true);
+        fclose($stream);
+        return;
+    }
+
+    echo strlen($chunk) . ' bytes' . PHP_EOL;
+});

vendor/react/event-loop/examples/12-generate-yes.php

@@ -0,0 +1,39 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+// data can be given as first argument or defaults to "y"
+$data = (isset($argv[1]) ? $argv[1] : 'y') . "\n";
+
+// repeat data X times in order to fill around 200 KB
+$data = str_repeat($data, round(200000 / strlen($data)));
+
+if (!defined('STDOUT') || stream_set_blocking(STDOUT, false) !== true) {
+    fwrite(STDERR, 'ERROR: Unable to set STDOUT non-blocking (not CLI or Windows?)' . PHP_EOL);
+    exit(1);
+}
+
+// write data to STDOUT whenever its write buffer accepts data
+// for illustrations purpose only, should use react/stream instead
+Loop::addWriteStream(STDOUT, function ($stdout) use (&$data) {
+    // try to write data
+    $r = fwrite($stdout, $data);
+
+    // nothing could be written despite being writable => closed
+    if ($r === 0) {
+        Loop::removeWriteStream($stdout);
+        fclose($stdout);
+        stream_set_blocking($stdout, true);
+        fwrite(STDERR, 'Stopped because STDOUT closed' . PHP_EOL);
+
+        return;
+    }
+
+    // implement a very simple ring buffer, unless everything has been written at once:
+    // everything written in this iteration will be appended for next iteration
+    if (isset($data[$r])) {
+        $data = substr($data, $r) . substr($data, 0, $r);
+    }
+});

vendor/react/event-loop/examples/13-http-client-blocking.php

@@ -0,0 +1,31 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+// connect to www.google.com:80 (blocking call!)
+// for illustration purposes only, should use react/socket instead
+$stream = stream_socket_client('tcp://www.google.com:80');
+if (!$stream) {
+    exit(1);
+}
+stream_set_blocking($stream, false);
+
+// send HTTP request
+fwrite($stream, "GET / HTTP/1.1\r\nHost: www.google.com\r\nConnection: close\r\n\r\n");
+
+// wait for HTTP response
+Loop::addReadStream($stream, function ($stream) {
+    $chunk = fread($stream, 64 * 1024);
+
+    // reading nothing means we reached EOF
+    if ($chunk === '') {
+        echo '[END]' . PHP_EOL;
+        Loop::removeReadStream($stream);
+        fclose($stream);
+        return;
+    }
+
+    echo $chunk;
+});

vendor/react/event-loop/examples/14-http-client-async.php

@@ -0,0 +1,60 @@
+<?php
+
+use React\EventLoop\Factory;
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+// resolve hostname before establishing TCP/IP connection (resolving DNS is still blocking here)
+// for illustration purposes only, should use react/socket or react/dns instead!
+$ip = gethostbyname('www.google.com');
+if (ip2long($ip) === false) {
+    echo 'Unable to resolve hostname' . PHP_EOL;
+    exit(1);
+}
+
+// establish TCP/IP connection (non-blocking)
+// for illustraction purposes only, should use react/socket instead!
+$stream = stream_socket_client('tcp://' . $ip . ':80', $errno, $errstr, null, STREAM_CLIENT_CONNECT | STREAM_CLIENT_ASYNC_CONNECT);
+if (!$stream) {
+    exit(1);
+}
+stream_set_blocking($stream, false);
+
+// print progress every 10ms
+echo 'Connecting';
+$timer = Loop::addPeriodicTimer(0.01, function () {
+    echo '.';
+});
+
+// wait for connection success/error
+Loop::addWriteStream($stream, function ($stream) use ($timer) {
+    Loop::removeWriteStream($stream);
+    Loop::cancelTimer($timer);
+
+    // check for socket error (connection rejected)
+    if (stream_socket_get_name($stream, true) === false) {
+        echo '[unable to connect]' . PHP_EOL;
+        exit(1);
+    } else {
+        echo '[connected]' . PHP_EOL;
+    }
+
+    // send HTTP request
+    fwrite($stream, "GET / HTTP/1.1\r\nHost: www.google.com\r\nConnection: close\r\n\r\n");
+
+    // wait for HTTP response
+    Loop::addReadStream($stream, function ($stream) {
+        $chunk = fread($stream, 64 * 1024);
+
+        // reading nothing means we reached EOF
+        if ($chunk === '') {
+            echo '[END]' . PHP_EOL;
+            Loop::removeReadStream($stream);
+            fclose($stream);
+            return;
+        }
+
+        echo $chunk;
+    });
+});

vendor/react/event-loop/examples/21-http-server.php

@@ -0,0 +1,34 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+// start TCP/IP server on localhost:8080
+// for illustration purposes only, should use react/socket instead
+$server = stream_socket_server('tcp://127.0.0.1:8080');
+if (!$server) {
+    exit(1);
+}
+stream_set_blocking($server, false);
+
+// wait for incoming connections on server socket
+Loop::addReadStream($server, function ($server) {
+    $conn = stream_socket_accept($server);
+    $data = "HTTP/1.1 200 OK\r\nContent-Length: 3\r\n\r\nHi\n";
+    Loop::addWriteStream($conn, function ($conn) use (&$data) {
+        $written = fwrite($conn, $data);
+        if ($written === strlen($data)) {
+            fclose($conn);
+            Loop::removeWriteStream($conn);
+        } else {
+            $data = substr($data, $written);
+        }
+    });
+});
+
+Loop::addPeriodicTimer(5, function () {
+    $memory = memory_get_usage() / 1024;
+    $formatted = number_format($memory, 3).'K';
+    echo "Current memory usage: {$formatted}\n";
+});

vendor/react/event-loop/examples/91-benchmark-ticks.php

@@ -0,0 +1,11 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$n = isset($argv[1]) ? (int)$argv[1] : 1000 * 100;
+
+for ($i = 0; $i < $n; ++$i) {
+    Loop::futureTick(function () { });
+}

vendor/react/event-loop/examples/92-benchmark-timers.php

@@ -0,0 +1,11 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$n = isset($argv[1]) ? (int)$argv[1] : 1000 * 100;
+
+for ($i = 0; $i < $n; ++$i) {
+    Loop::addTimer(0, function () { });
+}

vendor/react/event-loop/examples/93-benchmark-ticks-delay.php

@@ -0,0 +1,18 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$ticks = isset($argv[1]) ? (int)$argv[1] : 1000 * 100;
+$tick = function () use (&$tick, &$ticks) {
+    if ($ticks > 0) {
+        --$ticks;
+        //$loop->addTimer(0, $tick);
+        Loop::futureTick($tick);
+    } else {
+        echo 'done';
+    }
+};
+
+$tick();

vendor/react/event-loop/examples/94-benchmark-timers-delay.php

@@ -0,0 +1,18 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$ticks = isset($argv[1]) ? (int)$argv[1] : 1000 * 100;
+$tick = function () use (&$tick, &$ticks) {
+    if ($ticks > 0) {
+        --$ticks;
+        //$loop->futureTick($tick);
+        Loop::addTimer(0, $tick);
+    } else {
+        echo 'done';
+    }
+};
+
+$tick();

vendor/react/event-loop/examples/95-benchmark-memory.php

@@ -0,0 +1,67 @@
+<?php
+
+/**
+ * Run the script indefinitely seconds with the loop from the factory and report every 2 seconds:
+ * php 95-benchmark-memory.php
+ * Run the script for 30 seconds with the stream_select loop and report every 10 seconds:
+ * php 95-benchmark-memory.php -t 30 -l StreamSelect -r 10
+ */
+
+use React\EventLoop\Loop;
+use React\EventLoop\LoopInterface;
+use React\EventLoop\TimerInterface;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$args = getopt('t:l:r:');
+$t  = isset($args['t']) ? (int)$args['t'] : 0;
+$loop = isset($args['l']) && class_exists('React\EventLoop\\' . $args['l'] . 'Loop') ? 'React\EventLoop\\' . $args['l'] . 'Loop' : Loop::get();
+
+if (!($loop instanceof LoopInterface)) {
+    Loop::set(new $loop());
+}
+
+$r = isset($args['r']) ? (int)$args['r'] : 2;
+
+$runs = 0;
+
+if (5 < $t) {
+    Loop::addTimer($t, function () {
+        Loop::stop();
+    });
+
+}
+
+Loop::addPeriodicTimer(0.001, function () use (&$runs) {
+    $runs++;
+
+    Loop::addPeriodicTimer(1, function (TimerInterface $timer) {
+        Loop::cancelTimer($timer);
+    });
+});
+
+Loop::addPeriodicTimer($r, function () use (&$runs) {
+    $kmem = round(memory_get_usage() / 1024);
+    $kmemReal = round(memory_get_usage(true) / 1024);
+    echo "Runs:\t\t\t$runs\n";
+    echo "Memory (internal):\t$kmem KiB\n";
+    echo "Memory (real):\t\t$kmemReal KiB\n";
+    echo str_repeat('-', 50), "\n";
+});
+
+echo "PHP Version:\t\t", phpversion(), "\n";
+echo "Loop\t\t\t", get_class(Loop::get()), "\n";
+echo "Time\t\t\t", date('r'), "\n";
+
+echo str_repeat('-', 50), "\n";
+
+$beginTime = time();
+Loop::run();
+$endTime = time();
+$timeTaken = $endTime - $beginTime;
+
+echo "PHP Version:\t\t", phpversion(), "\n";
+echo "Loop\t\t\t", get_class(Loop::get()), "\n";
+echo "Time\t\t\t", date('r'), "\n";
+echo "Time taken\t\t", $timeTaken, " seconds\n";
+echo "Runs per second\t\t", round($runs / $timeTaken), "\n";

vendor/react/event-loop/phpunit.xml.dist

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!-- PHPUnit configuration file with new format for PHPUnit 9.3+ -->
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.3/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         colors="true"
+         cacheResult="false">
+    <testsuites>
+        <testsuite name="React test suite">
+            <directory>./tests/</directory>
+        </testsuite>
+    </testsuites>
+    <coverage>
+        <include>
+            <directory>./src/</directory>
+        </include>
+    </coverage>
+</phpunit>

vendor/react/event-loop/phpunit.xml.legacy

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<!-- PHPUnit configuration file with old format for PHPUnit 9.2 or older -->
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/4.8/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         colors="true">
+    <testsuites>
+        <testsuite name="React test suite">
+            <directory>./tests/</directory>
+        </testsuite>
+    </testsuites>
+    <filter>
+        <whitelist>
+            <directory>./src/</directory>
+        </whitelist>
+    </filter>
+</phpunit>

vendor/react/event-loop/src/ExtEvLoop.php

@@ -0,0 +1,253 @@
+<?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.
+ * `libev` itself supports a number of system-specific backends (epoll, kqueue).
+ *
+ * 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 = array();
+
+    /**
+     * @var EvIo[]
+     */
+    private $writeStreams = array();
+
+    /**
+     * @var bool
+     */
+    private $running;
+
+    /**
+     * @var SignalsHandler
+     */
+    private $signals;
+
+    /**
+     * @var \EvSignal[]
+     */
+    private $signalEvents = array();
+
+    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]);
+        }
+    }
+}

vendor/react/event-loop/src/ExtEventLoop.php

@@ -0,0 +1,275 @@
+<?php
+
+namespace React\EventLoop;
+
+use BadMethodCallException;
+use Event;
+use EventBase;
+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),
+ * that provides an interface to `libevent` library.
+ * `libevent` itself supports a number of system-specific backends (epoll, kqueue).
+ *
+ * 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');
+        }
+
+        // support arbitrary file descriptors and not just sockets
+        // Windows only has limited file descriptor support, so do not require this (will fail otherwise)
+        // @link http://www.wangafu.net/~nickm/libevent-book/Ref2_eventbase.html#_setting_up_a_complicated_event_base
+        $config = new \EventConfig();
+        if (\DIRECTORY_SEPARATOR !== '\\') {
+            $config->requireFeatures(\EventConfig::FEATURE_FDS);
+        }
+
+        $this->eventBase = new EventBase($config);
+        $this->futureTickQueue = new FutureTickQueue();
+        $this->timerEvents = new SplObjectStorage();
+        $this->signals = new SignalsHandler();
+
+        $this->createTimerCallback();
+        $this->createStreamCallback();
+    }
+
+    public function __destruct()
+    {
+        // explicitly clear all references to Event objects to prevent SEGFAULTs on Windows
+        foreach ($this->timerEvents as $timer) {
+            $this->timerEvents->detach($timer);
+        }
+
+        $this->readEvents = array();
+        $this->writeEvents = array();
+    }
+
+    public function addReadStream($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);
+            }
+        };
+    }
+}

vendor/react/event-loop/src/ExtLibevLoop.php

@@ -0,0 +1,201 @@
+<?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;
+
+/**
+ * [Deprecated] An `ext-libev` based event loop.
+ *
+ * This uses an [unofficial `libev` extension](https://github.com/m4rw3r/php-libev),
+ * that provides an interface to `libev` library.
+ * `libev` itself supports a number of system-specific backends (epoll, kqueue).
+ *
+ * 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
+ * @deprecated 1.2.0, use [`ExtEvLoop`](#extevloop) instead.
+ */
+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;
+    }
+}

vendor/react/event-loop/src/ExtLibeventLoop.php

@@ -0,0 +1,285 @@
+<?php
+
+namespace React\EventLoop;
+
+use BadMethodCallException;
+use Event;
+use EventBase;
+use React\EventLoop\Tick\FutureTickQueue;
+use React\EventLoop\Timer\Timer;
+use SplObjectStorage;
+
+/**
+ * [Deprecated] An `ext-libevent` based event loop.
+ *
+ * This uses the [`libevent` PECL extension](https://pecl.php.net/package/libevent),
+ * that provides an interface to `libevent` library.
+ * `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
+ * @deprecated 1.2.0, use [`ExtEventLoop`](#exteventloop) instead.
+ */
+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);
+            }
+        };
+    }
+}

vendor/react/event-loop/src/ExtUvLoop.php

@@ -0,0 +1,342 @@
+<?php
+
+namespace React\EventLoop;
+
+use React\EventLoop\Tick\FutureTickQueue;
+use React\EventLoop\Timer\Timer;
+use SplObjectStorage;
+
+/**
+ * An `ext-uv` based event loop.
+ *
+ * This loop uses the [`uv` PECL extension](https://pecl.php.net/package/uv),
+ * that provides an interface to `libuv` library.
+ * `libuv` itself supports a number of system-specific backends (epoll, kqueue).
+ *
+ * This loop is known to work with PHP 7+.
+ *
+ * @see https://github.com/bwoebi/php-uv
+ */
+final class ExtUvLoop implements LoopInterface
+{
+    private $uv;
+    private $futureTickQueue;
+    private $timers;
+    private $streamEvents = array();
+    private $readStreams = array();
+    private $writeStreams = array();
+    private $running;
+    private $signals;
+    private $signalEvents = array();
+    private $streamListener;
+
+    public function __construct()
+    {
+        if (!\function_exists('uv_loop_new')) {
+            throw new \BadMethodCallException('Cannot create LibUvLoop, ext-uv extension missing');
+        }
+
+        $this->uv = \uv_loop_new();
+        $this->futureTickQueue = new FutureTickQueue();
+        $this->timers = new SplObjectStorage();
+        $this->streamListener = $this->createStreamListener();
+        $this->signals = new SignalsHandler();
+    }
+
+    /**
+     * Returns the underlying ext-uv event loop. (Internal ReactPHP use only.)
+     *
+     * @internal
+     *
+     * @return resource
+     */
+    public function getUvLoop()
+    {
+        return $this->uv;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addReadStream($stream, $listener)
+    {
+        if (isset($this->readStreams[(int) $stream])) {
+            return;
+        }
+
+        $this->readStreams[(int) $stream] = $listener;
+        $this->addStream($stream);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addWriteStream($stream, $listener)
+    {
+        if (isset($this->writeStreams[(int) $stream])) {
+            return;
+        }
+
+        $this->writeStreams[(int) $stream] = $listener;
+        $this->addStream($stream);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function removeReadStream($stream)
+    {
+        if (!isset($this->streamEvents[(int) $stream])) {
+            return;
+        }
+
+        unset($this->readStreams[(int) $stream]);
+        $this->removeStream($stream);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function removeWriteStream($stream)
+    {
+        if (!isset($this->streamEvents[(int) $stream])) {
+            return;
+        }
+
+        unset($this->writeStreams[(int) $stream]);
+        $this->removeStream($stream);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    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);
+            }
+        };
+
+        $event = \uv_timer_init($this->uv);
+        $this->timers->attach($timer, $event);
+        \uv_timer_start(
+            $event,
+            $this->convertFloatSecondsToMilliseconds($interval),
+            0,
+            $callback
+        );
+
+        return $timer;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function addPeriodicTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, true);
+
+        $callback = function () use ($timer) {
+            \call_user_func($timer->getCallback(), $timer);
+        };
+
+        $interval = $this->convertFloatSecondsToMilliseconds($interval);
+        $event = \uv_timer_init($this->uv);
+        $this->timers->attach($timer, $event);
+        \uv_timer_start(
+            $event,
+            $interval,
+            (int) $interval === 0 ? 1 : $interval,
+            $callback
+        );
+
+        return $timer;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function cancelTimer(TimerInterface $timer)
+    {
+        if (isset($this->timers[$timer])) {
+            @\uv_timer_stop($this->timers[$timer]);
+            $this->timers->detach($timer);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    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] = \uv_signal_init($this->uv);
+            \uv_signal_start($this->signalEvents[$signal], function () use ($signals, $signal) {
+                $signals->call($signal);
+            }, $signal);
+        }
+    }
+
+    public function removeSignal($signal, $listener)
+    {
+        $this->signals->remove($signal, $listener);
+
+        if (isset($this->signalEvents[$signal]) && $this->signals->count($signal) === 0) {
+            \uv_signal_stop($this->signalEvents[$signal]);
+            unset($this->signalEvents[$signal]);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    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();
+
+            // Use UV::RUN_ONCE when there are only I/O events active in the loop and block until one of those triggers,
+            // otherwise use UV::RUN_NOWAIT.
+            // @link http://docs.libuv.org/en/v1.x/loop.html#c.uv_run
+            $flags = \UV::RUN_ONCE;
+            if ($wasJustStopped || $hasPendingCallbacks) {
+                $flags = \UV::RUN_NOWAIT;
+            } elseif ($nothingLeftToDo) {
+                break;
+            }
+
+            \uv_run($this->uv, $flags);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function stop()
+    {
+        $this->running = false;
+    }
+
+    private function addStream($stream)
+    {
+        if (!isset($this->streamEvents[(int) $stream])) {
+            $this->streamEvents[(int)$stream] = \uv_poll_init_socket($this->uv, $stream);
+        }
+
+        if ($this->streamEvents[(int) $stream] !== false) {
+            $this->pollStream($stream);
+        }
+    }
+
+    private function removeStream($stream)
+    {
+        if (!isset($this->streamEvents[(int) $stream])) {
+            return;
+        }
+
+        if (!isset($this->readStreams[(int) $stream])
+            && !isset($this->writeStreams[(int) $stream])) {
+            \uv_poll_stop($this->streamEvents[(int) $stream]);
+            \uv_close($this->streamEvents[(int) $stream]);
+            unset($this->streamEvents[(int) $stream]);
+            return;
+        }
+
+        $this->pollStream($stream);
+    }
+
+    private function pollStream($stream)
+    {
+        if (!isset($this->streamEvents[(int) $stream])) {
+            return;
+        }
+
+        $flags = 0;
+        if (isset($this->readStreams[(int) $stream])) {
+            $flags |= \UV::READABLE;
+        }
+
+        if (isset($this->writeStreams[(int) $stream])) {
+            $flags |= \UV::WRITABLE;
+        }
+
+        \uv_poll_start($this->streamEvents[(int) $stream], $flags, $this->streamListener);
+    }
+
+    /**
+     * Create a stream listener
+     *
+     * @return callable Returns a callback
+     */
+    private function createStreamListener()
+    {
+        $callback = function ($event, $status, $events, $stream) {
+            // libuv automatically stops polling on error, re-enable polling to match other loop implementations
+            if ($status !== 0) {
+                $this->pollStream($stream);
+
+                // libuv may report no events on error, but this should still invoke stream listeners to report closed connections
+                // re-enable both readable and writable, correct listeners will be checked below anyway
+                if ($events === 0) {
+                    $events = \UV::READABLE | \UV::WRITABLE;
+                }
+            }
+
+            if (isset($this->readStreams[(int) $stream]) && ($events & \UV::READABLE)) {
+                \call_user_func($this->readStreams[(int) $stream], $stream);
+            }
+
+            if (isset($this->writeStreams[(int) $stream]) && ($events & \UV::WRITABLE)) {
+                \call_user_func($this->writeStreams[(int) $stream], $stream);
+            }
+        };
+
+        return $callback;
+    }
+
+    /**
+     * @param float $interval
+     * @return int
+     */
+    private function convertFloatSecondsToMilliseconds($interval)
+    {
+        if ($interval < 0) {
+            return 0;
+        }
+
+        $maxValue = (int) (\PHP_INT_MAX / 1000);
+        $intInterval = (int) $interval;
+
+        if (($intInterval <= 0 && $interval > 1) || $intInterval >= $maxValue) {
+            throw new \InvalidArgumentException(
+                "Interval overflow, value must be lower than '{$maxValue}', but '{$interval}' passed."
+            );
+        }
+
+        return (int) \floor($interval * 1000);
+    }
+}

vendor/react/event-loop/src/Factory.php

@@ -0,0 +1,75 @@
+<?php
+
+namespace React\EventLoop;
+
+/**
+ * [Deprecated] The `Factory` class exists as a convenient way to pick the best available event loop implementation.
+ *
+ * @deprecated 1.2.0 See Loop instead.
+ * @see Loop
+ */
+final class Factory
+{
+    /**
+     * [Deprecated] Creates a new event loop instance
+     *
+     * ```php
+     * // deprecated
+     * $loop = React\EventLoop\Factory::create();
+     *
+     * // new
+     * $loop = React\EventLoop\Loop::get();
+     * ```
+     *
+     * 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.
+     *
+     * @deprecated 1.2.0 See Loop::get() instead.
+     * @see Loop::get()
+     *
+     * @return LoopInterface
+     */
+    public static function create()
+    {
+        $loop = self::construct();
+
+        Loop::set($loop);
+
+        return $loop;
+    }
+
+    /**
+     * @internal
+     * @return LoopInterface
+     */
+    private static function construct()
+    {
+        // @codeCoverageIgnoreStart
+        if (\function_exists('uv_loop_new')) {
+            // only use ext-uv on PHP 7
+            return new ExtUvLoop();
+        }
+
+        if (\class_exists('libev\EventLoop', false)) {
+            return new ExtLibevLoop();
+        }
+
+        if (\class_exists('EvLoop', false)) {
+            return new ExtEvLoop();
+        }
+
+        if (\class_exists('EventBase', false)) {
+            return new ExtEventLoop();
+        }
+
+        if (\function_exists('event_base_new') && \PHP_MAJOR_VERSION === 5) {
+            // only use ext-libevent on PHP 5 for now
+            return new ExtLibeventLoop();
+        }
+
+        return new StreamSelectLoop();
+        // @codeCoverageIgnoreEnd
+    }
+}

vendor/react/event-loop/src/Loop.php

@@ -0,0 +1,225 @@
+<?php
+
+namespace React\EventLoop;
+
+/**
+ * The `Loop` class exists as a convenient way to get the currently relevant loop
+ */
+final class Loop
+{
+    /**
+     * @var LoopInterface
+     */
+    private static $instance;
+
+    /** @var bool */
+    private static $stopped = false;
+
+    /**
+     * Returns the event loop.
+     * When no loop is set, it will call the factory to create one.
+     *
+     * This method always returns an instance implementing `LoopInterface`,
+     * the actual event loop implementation is an implementation detail.
+     *
+     * This method is the preferred way to get the event loop and using
+     * Factory::create has been deprecated.
+     *
+     * @return LoopInterface
+     */
+    public static function get()
+    {
+        if (self::$instance instanceof LoopInterface) {
+            return self::$instance;
+        }
+
+        self::$instance = $loop = Factory::create();
+
+        // Automatically run loop at end of program, unless already started or stopped explicitly.
+        // This is tested using child processes, so coverage is actually 100%, see BinTest.
+        // @codeCoverageIgnoreStart
+        $hasRun = false;
+        $loop->futureTick(function () use (&$hasRun) {
+            $hasRun = true;
+        });
+
+        $stopped =& self::$stopped;
+        register_shutdown_function(function () use ($loop, &$hasRun, &$stopped) {
+            // Don't run if we're coming from a fatal error (uncaught exception).
+            $error = error_get_last();
+            if ((isset($error['type']) ? $error['type'] : 0) & (E_ERROR | E_CORE_ERROR | E_COMPILE_ERROR | E_USER_ERROR | E_RECOVERABLE_ERROR)) {
+                return;
+            }
+
+            if (!$hasRun && !$stopped) {
+                $loop->run();
+            }
+        });
+        // @codeCoverageIgnoreEnd
+
+        return self::$instance;
+    }
+
+    /**
+     * Internal undocumented method, behavior might change or throw in the
+     * future. Use with caution and at your own risk.
+     *
+     * @internal
+     * @return void
+     */
+    public static function set(LoopInterface $loop)
+    {
+        self::$instance = $loop;
+    }
+
+    /**
+     * [Advanced] Register a listener to be notified when a stream is ready to read.
+     *
+     * @param resource $stream
+     * @param callable $listener
+     * @return void
+     * @throws \Exception
+     * @see LoopInterface::addReadStream()
+     */
+    public static function addReadStream($stream, $listener)
+    {
+        self::get()->addReadStream($stream, $listener);
+    }
+
+    /**
+     * [Advanced] Register a listener to be notified when a stream is ready to write.
+     *
+     * @param resource $stream
+     * @param callable $listener
+     * @return void
+     * @throws \Exception
+     * @see LoopInterface::addWriteStream()
+     */
+    public static function addWriteStream($stream, $listener)
+    {
+        self::get()->addWriteStream($stream, $listener);
+    }
+
+    /**
+     * Remove the read event listener for the given stream.
+     *
+     * @param resource $stream
+     * @return void
+     * @see LoopInterface::removeReadStream()
+     */
+    public static function removeReadStream($stream)
+    {
+        self::get()->removeReadStream($stream);
+    }
+
+    /**
+     * Remove the write event listener for the given stream.
+     *
+     * @param resource $stream
+     * @return void
+     * @see LoopInterface::removeWriteStream()
+     */
+    public static function removeWriteStream($stream)
+    {
+        self::get()->removeWriteStream($stream);
+    }
+
+    /**
+     * Enqueue a callback to be invoked once after the given interval.
+     *
+     * @param float $interval
+     * @param callable $callback
+     * @return TimerInterface
+     * @see LoopInterface::addTimer()
+     */
+    public static function addTimer($interval, $callback)
+    {
+        return self::get()->addTimer($interval, $callback);
+    }
+
+    /**
+     * Enqueue a callback to be invoked repeatedly after the given interval.
+     *
+     * @param float $interval
+     * @param callable $callback
+     * @return TimerInterface
+     * @see LoopInterface::addPeriodicTimer()
+     */
+    public static function addPeriodicTimer($interval, $callback)
+    {
+        return self::get()->addPeriodicTimer($interval, $callback);
+    }
+
+    /**
+     * Cancel a pending timer.
+     *
+     * @param TimerInterface $timer
+     * @return void
+     * @see LoopInterface::cancelTimer()
+     */
+    public static function cancelTimer(TimerInterface $timer)
+    {
+        return self::get()->cancelTimer($timer);
+    }
+
+    /**
+     * Schedule a callback to be invoked on a future tick of the event loop.
+     *
+     * @param callable $listener
+     * @return void
+     * @see LoopInterface::futureTick()
+     */
+    public static function futureTick($listener)
+    {
+        self::get()->futureTick($listener);
+    }
+
+    /**
+     * Register a listener to be notified when a signal has been caught by this process.
+     *
+     * @param int $signal
+     * @param callable $listener
+     * @return void
+     * @see LoopInterface::addSignal()
+     */
+    public static function addSignal($signal, $listener)
+    {
+        self::get()->addSignal($signal, $listener);
+    }
+
+    /**
+     * Removes a previously added signal listener.
+     *
+     * @param int $signal
+     * @param callable $listener
+     * @return void
+     * @see LoopInterface::removeSignal()
+     */
+    public static function removeSignal($signal, $listener)
+    {
+        self::get()->removeSignal($signal, $listener);
+    }
+
+    /**
+     * Run the event loop until there are no more tasks to perform.
+     *
+     * @return void
+     * @see LoopInterface::run()
+     */
+    public static function run()
+    {
+        self::get()->run();
+    }
+
+    /**
+     * Instruct a running event loop to stop.
+     *
+     * @return void
+     * @see LoopInterface::stop()
+     */
+    public static function stop()
+    {
+        self::$stopped = true;
+        self::get()->stop();
+    }
+}

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
+     * only available as of PHP 7.3 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
+     * only available as of PHP 7.3 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();
+}

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;
+    }
+}

vendor/react/event-loop/src/StreamSelectLoop.php

@@ -0,0 +1,308 @@
+<?php
+
+namespace React\EventLoop;
+
+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()`](https://www.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
+ * when using any version before PHP 7.3, because a monotonic time source is
+ * only available as of PHP 7.3 (`hrtime()`).
+ * 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 on PHP < 7.3 and
+ * then adjust your system time forward by 20s, the timer may trigger in 10s.
+ * See also [`addTimer()`](#addtimer) for more details.
+ *
+ * @link https://www.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 $pcntlPoll = false;
+    private $signals;
+
+    public function __construct()
+    {
+        $this->futureTickQueue = new FutureTickQueue();
+        $this->timers = new Timers();
+        $this->pcntl = \function_exists('pcntl_signal') && \function_exists('pcntl_signal_dispatch');
+        $this->pcntlPoll = $this->pcntl && !\function_exists('pcntl_async_signals');
+        $this->signals = new SignalsHandler();
+
+        // prefer async signals if available (PHP 7.1+) or fall back to dispatching on each tick
+        if ($this->pcntl && !$this->pcntlPoll) {
+            \pcntl_async_signals(true);
+        }
+    }
+
+    public function addReadStream($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->pcntlPoll) {
+            \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 int|null $timeout Activity timeout in microseconds, or null to wait forever.
+     *
+     * @return int|false The total number of streams that are ready for read/write.
+     *     Can return false if stream_select() is interrupted by a signal.
+     */
+    private function streamSelect(array &$read, array &$write, $timeout)
+    {
+        if ($read || $write) {
+            // We do not usually use or expose the `exceptfds` parameter passed to the underlying `select`.
+            // However, Windows does not report failed connection attempts in `writefds` passed to `select` like most other platforms.
+            // Instead, it uses `writefds` only for successful connection attempts and `exceptfds` for failed connection attempts.
+            // We work around this by adding all sockets that look like a pending connection attempt to `exceptfds` automatically on Windows and merge it back later.
+            // This ensures the public API matches other loop implementations across all platforms (see also test suite or rather test matrix).
+            // Lacking better APIs, every write-only socket that has not yet read any data is assumed to be in a pending connection attempt state.
+            // @link https://docs.microsoft.com/de-de/windows/win32/api/winsock2/nf-winsock2-select
+            $except = null;
+            if (\DIRECTORY_SEPARATOR === '\\') {
+                $except = array();
+                foreach ($write as $key => $socket) {
+                    if (!isset($read[$key]) && @\ftell($socket) === 0) {
+                        $except[$key] = $socket;
+                    }
+                }
+            }
+
+            // suppress warnings that occur, when stream_select is interrupted by a signal
+            $ret = @\stream_select($read, $write, $except, $timeout === null ? null : 0, $timeout);
+
+            if ($except) {
+                $write = \array_merge($write, $except);
+            }
+            return $ret;
+        }
+
+        if ($timeout > 0) {
+            \usleep($timeout);
+        } elseif ($timeout === null) {
+            // wait forever (we only reach this if we're only awaiting signals)
+            // this may be interrupted and return earlier when a signal is received
+            \sleep(PHP_INT_MAX);
+        }
+
+        return 0;
+    }
+}

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();
+    }
+}

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;
+    }
+}

vendor/react/event-loop/src/Timer/Timers.php

@@ -0,0 +1,107 @@
+<?php
+
+namespace React\EventLoop\Timer;
+
+use React\EventLoop\TimerInterface;
+
+/**
+ * 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 = array();
+    private $schedule = array();
+    private $sorted = true;
+    private $useHighResolution;
+
+    public function __construct()
+    {
+        // prefer high-resolution timer, available as of PHP 7.3+
+        $this->useHighResolution = \function_exists('hrtime');
+    }
+
+    public function updateTime()
+    {
+        return $this->time = $this->useHighResolution ? \hrtime(true) * 1e-9 : \microtime(true);
+    }
+
+    public function getTime()
+    {
+        return $this->time ?: $this->updateTime();
+    }
+
+    public function add(TimerInterface $timer)
+    {
+        $id = \spl_object_hash($timer);
+        $this->timers[$id] = $timer;
+        $this->schedule[$id] = $timer->getInterval() + $this->updateTime();
+        $this->sorted = false;
+    }
+
+    public function contains(TimerInterface $timer)
+    {
+        return isset($this->timers[\spl_object_hash($timer)]);
+    }
+
+    public function cancel(TimerInterface $timer)
+    {
+        $id = \spl_object_hash($timer);
+        unset($this->timers[$id], $this->schedule[$id]);
+    }
+
+    public function getFirst()
+    {
+        // ensure timers are sorted to simply accessing next (first) one
+        if (!$this->sorted) {
+            $this->sorted = true;
+            \asort($this->schedule);
+        }
+
+        return \reset($this->schedule);
+    }
+
+    public function isEmpty()
+    {
+        return \count($this->timers) === 0;
+    }
+
+    public function tick()
+    {
+        // ensure timers are sorted so we can execute in order
+        if (!$this->sorted) {
+            $this->sorted = true;
+            \asort($this->schedule);
+        }
+
+        $time = $this->updateTime();
+
+        foreach ($this->schedule as $id => $scheduled) {
+            // schedule is ordered, so loop until first timer that is not scheduled for execution now
+            if ($scheduled >= $time) {
+                break;
+            }
+
+            // skip any timers that are removed while we process the current schedule
+            if (!isset($this->schedule[$id]) || $this->schedule[$id] !== $scheduled) {
+                continue;
+            }
+
+            $timer = $this->timers[$id];
+            \call_user_func($timer->getCallback(), $timer);
+
+            // re-schedule if this is a periodic timer and it has not been cancelled explicitly already
+            if ($timer->isPeriodic() && isset($this->timers[$id])) {
+                $this->schedule[$id] = $timer->getInterval() + $time;
+                $this->sorted = false;
+            } else {
+                unset($this->timers[$id], $this->schedule[$id]);
+            }
+        }
+    }
+}

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();
+}

vendor/react/event-loop/tests/AbstractLoopTest.php

@@ -0,0 +1,786 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use React\EventLoop\StreamSelectLoop;
+use React\EventLoop\ExtUvLoop;
+
+abstract class AbstractLoopTest extends TestCase
+{
+    /**
+     * @var \React\EventLoop\LoopInterface
+     */
+    protected $loop;
+
+    private $tickTimeout;
+
+    const PHP_DEFAULT_CHUNK_SIZE = 8192;
+
+    /**
+     * @before
+     */
+    public function setUpLoop()
+    {
+        // It's a timeout, don't set it too low. Travis and other CI systems are slow.
+        $this->tickTimeout = 0.02;
+        $this->loop = $this->createLoop();
+    }
+
+    abstract public function createLoop();
+
+    public function createSocketPair()
+    {
+        $domain = (DIRECTORY_SEPARATOR === '\\') ? STREAM_PF_INET : STREAM_PF_UNIX;
+        $sockets = stream_socket_pair($domain, STREAM_SOCK_STREAM, STREAM_IPPROTO_IP);
+
+        foreach ($sockets as $socket) {
+            if (function_exists('stream_set_read_buffer')) {
+                stream_set_read_buffer($socket, 0);
+            }
+        }
+
+        return $sockets;
+    }
+
+    public function testAddReadStreamTriggersWhenSocketReceivesData()
+    {
+        list ($input, $output) = $this->createSocketPair();
+
+        $loop = $this->loop;
+        $timeout = $loop->addTimer(0.1, function () use ($input, $loop) {
+            $loop->removeReadStream($input);
+        });
+
+        $called = 0;
+        $this->loop->addReadStream($input, function () use (&$called, $loop, $input, $timeout) {
+            ++$called;
+            $loop->removeReadStream($input);
+            $loop->cancelTimer($timeout);
+        });
+
+        fwrite($output, "foo\n");
+
+        $this->loop->run();
+
+        $this->assertEquals(1, $called);
+    }
+
+    public function testAddReadStreamTriggersWhenSocketCloses()
+    {
+        list ($input, $output) = $this->createSocketPair();
+
+        $loop = $this->loop;
+        $timeout = $loop->addTimer(0.1, function () use ($input, $loop) {
+            $loop->removeReadStream($input);
+        });
+
+        $called = 0;
+        $this->loop->addReadStream($input, function () use (&$called, $loop, $input, $timeout) {
+            ++$called;
+            $loop->removeReadStream($input);
+            $loop->cancelTimer($timeout);
+        });
+
+        fclose($output);
+
+        $this->loop->run();
+
+        $this->assertEquals(1, $called);
+    }
+
+    public function testAddWriteStreamTriggersWhenSocketConnectionSucceeds()
+    {
+        $server = stream_socket_server('127.0.0.1:0');
+
+        $errno = $errstr = null;
+        $connecting = stream_socket_client(stream_socket_get_name($server, false), $errno, $errstr, 0, STREAM_CLIENT_CONNECT | STREAM_CLIENT_ASYNC_CONNECT);
+
+        $loop = $this->loop;
+        $timeout = $loop->addTimer(0.1, function () use ($connecting, $loop) {
+            $loop->removeWriteStream($connecting);
+        });
+
+        $called = 0;
+        $this->loop->addWriteStream($connecting, function () use (&$called, $loop, $connecting, $timeout) {
+            ++$called;
+            $loop->removeWriteStream($connecting);
+            $loop->cancelTimer($timeout);
+        });
+
+        $this->loop->run();
+
+        $this->assertEquals(1, $called);
+    }
+
+    public function testAddWriteStreamTriggersWhenSocketConnectionRefused()
+    {
+        if (defined('HHVM_VERSION')) {
+            $this->markTestSkipped('Not supported on HHVM');
+        }
+
+        // first verify the operating system actually refuses the connection and no firewall is in place
+        // use higher timeout because Windows retires multiple times and has a noticeable delay
+        // @link https://stackoverflow.com/questions/19440364/why-do-failed-attempts-of-socket-connect-take-1-sec-on-windows
+        $errno = $errstr = null;
+        if (@stream_socket_client('127.0.0.1:1', $errno, $errstr, 10.0) !== false || (defined('SOCKET_ECONNREFUSED') && $errno !== SOCKET_ECONNREFUSED)) {
+            $this->markTestSkipped('Expected host to refuse connection, but got error ' . $errno . ': ' . $errstr);
+        }
+
+        $connecting = stream_socket_client('127.0.0.1:1', $errno, $errstr, 0, STREAM_CLIENT_CONNECT | STREAM_CLIENT_ASYNC_CONNECT);
+
+        $loop = $this->loop;
+        $timeout = $loop->addTimer(10.0, function () use ($connecting, $loop) {
+            $loop->removeWriteStream($connecting);
+        });
+
+        $called = 0;
+        $this->loop->addWriteStream($connecting, function () use (&$called, $loop, $connecting, $timeout) {
+            ++$called;
+            $loop->removeWriteStream($connecting);
+            $loop->cancelTimer($timeout);
+        });
+
+        $this->loop->run();
+
+        $this->assertEquals(1, $called);
+    }
+
+    public function testAddReadStream()
+    {
+        if ($this->loop instanceof ExtUvLoop && DIRECTORY_SEPARATOR === '\\') {
+            $this->markTestIncomplete('Ticking ExtUvLoop not supported on Windows');
+        }
+
+        list ($input, $output) = $this->createSocketPair();
+
+        $this->loop->addReadStream($input, $this->expectCallableExactly(2));
+
+        fwrite($output, "foo\n");
+        $this->tickLoop($this->loop);
+
+        fwrite($output, "bar\n");
+        $this->tickLoop($this->loop);
+    }
+
+    public function testAddReadStreamIgnoresSecondCallable()
+    {
+        if ($this->loop instanceof ExtUvLoop && DIRECTORY_SEPARATOR === '\\') {
+            $this->markTestIncomplete('Ticking ExtUvLoop not supported on Windows');
+        }
+
+        list ($input, $output) = $this->createSocketPair();
+
+        $this->loop->addReadStream($input, $this->expectCallableExactly(2));
+        $this->loop->addReadStream($input, $this->expectCallableNever());
+
+        fwrite($output, "foo\n");
+        $this->tickLoop($this->loop);
+
+        fwrite($output, "bar\n");
+        $this->tickLoop($this->loop);
+    }
+
+    public function testAddReadStreamReceivesDataFromStreamReference()
+    {
+        $this->received = '';
+        $this->subAddReadStreamReceivesDataFromStreamReference();
+        $this->assertEquals('', $this->received);
+
+        $this->assertRunFasterThan($this->tickTimeout * 2);
+        $this->assertEquals('[hello]X', $this->received);
+    }
+
+    /**
+     * Helper for above test. This happens in another helper method to verify
+     * the loop keeps track of assigned stream resources (refcount).
+     */
+    private function subAddReadStreamReceivesDataFromStreamReference()
+    {
+        list ($input, $output) = $this->createSocketPair();
+
+        fwrite($input, 'hello');
+        fclose($input);
+
+        $loop = $this->loop;
+        $received =& $this->received;
+        $loop->addReadStream($output, function ($output) use ($loop, &$received) {
+            $chunk = fread($output, 1024);
+            if ($chunk === '') {
+                $received .= 'X';
+                $loop->removeReadStream($output);
+                fclose($output);
+            } else {
+                $received .= '[' . $chunk . ']';
+            }
+        });
+    }
+
+    public function testAddWriteStream()
+    {
+        if ($this->loop instanceof ExtUvLoop && DIRECTORY_SEPARATOR === '\\') {
+            $this->markTestIncomplete('Ticking ExtUvLoop not supported on Windows');
+        }
+
+        list ($input) = $this->createSocketPair();
+
+        $this->loop->addWriteStream($input, $this->expectCallableExactly(2));
+        $this->tickLoop($this->loop);
+        $this->tickLoop($this->loop);
+    }
+
+    public function testAddWriteStreamIgnoresSecondCallable()
+    {
+        if ($this->loop instanceof ExtUvLoop && DIRECTORY_SEPARATOR === '\\') {
+            $this->markTestIncomplete('Ticking ExtUvLoop not supported on Windows');
+        }
+
+        list ($input) = $this->createSocketPair();
+
+        $this->loop->addWriteStream($input, $this->expectCallableExactly(2));
+        $this->loop->addWriteStream($input, $this->expectCallableNever());
+        $this->tickLoop($this->loop);
+        $this->tickLoop($this->loop);
+    }
+
+    public function testRemoveReadStreamInstantly()
+    {
+        if ($this->loop instanceof ExtUvLoop && DIRECTORY_SEPARATOR === '\\') {
+            $this->markTestIncomplete('Ticking ExtUvLoop not supported on Windows');
+        }
+
+        list ($input, $output) = $this->createSocketPair();
+
+        $this->loop->addReadStream($input, $this->expectCallableNever());
+        $this->loop->removeReadStream($input);
+
+        fwrite($output, "bar\n");
+        $this->tickLoop($this->loop);
+    }
+
+    public function testRemoveReadStreamAfterReading()
+    {
+        if ($this->loop instanceof ExtUvLoop && DIRECTORY_SEPARATOR === '\\') {
+            $this->markTestIncomplete('Ticking ExtUvLoop not supported on Windows');
+        }
+
+        list ($input, $output) = $this->createSocketPair();
+
+        $this->loop->addReadStream($input, $this->expectCallableOnce());
+
+        fwrite($output, "foo\n");
+        $this->tickLoop($this->loop);
+
+        $this->loop->removeReadStream($input);
+
+        fwrite($output, "bar\n");
+        $this->tickLoop($this->loop);
+    }
+
+    public function testRemoveWriteStreamInstantly()
+    {
+        if ($this->loop instanceof ExtUvLoop && DIRECTORY_SEPARATOR === '\\') {
+            $this->markTestIncomplete('Ticking ExtUvLoop not supported on Windows');
+        }
+
+        list ($input) = $this->createSocketPair();
+
+        $this->loop->addWriteStream($input, $this->expectCallableNever());
+        $this->loop->removeWriteStream($input);
+        $this->tickLoop($this->loop);
+    }
+
+    public function testRemoveWriteStreamAfterWriting()
+    {
+        if ($this->loop instanceof ExtUvLoop && DIRECTORY_SEPARATOR === '\\') {
+            $this->markTestIncomplete('Ticking ExtUvLoop not supported on Windows');
+        }
+
+        list ($input) = $this->createSocketPair();
+
+        $this->loop->addWriteStream($input, $this->expectCallableOnce());
+        $this->tickLoop($this->loop);
+
+        $this->loop->removeWriteStream($input);
+        $this->tickLoop($this->loop);
+    }
+
+    public function testRemoveStreamForReadOnly()
+    {
+        if ($this->loop instanceof ExtUvLoop && DIRECTORY_SEPARATOR === '\\') {
+            $this->markTestIncomplete('Ticking ExtUvLoop not supported on Windows');
+        }
+
+        list ($input, $output) = $this->createSocketPair();
+
+        $this->loop->addReadStream($input, $this->expectCallableNever());
+        $this->loop->addWriteStream($output, $this->expectCallableOnce());
+        $this->loop->removeReadStream($input);
+
+        fwrite($output, "foo\n");
+        $this->tickLoop($this->loop);
+    }
+
+    public function testRemoveStreamForWriteOnly()
+    {
+        if ($this->loop instanceof ExtUvLoop && DIRECTORY_SEPARATOR === '\\') {
+            $this->markTestIncomplete('Ticking ExtUvLoop not supported on Windows');
+        }
+
+        list ($input, $output) = $this->createSocketPair();
+
+        fwrite($output, "foo\n");
+
+        $this->loop->addReadStream($input, $this->expectCallableOnce());
+        $this->loop->addWriteStream($output, $this->expectCallableNever());
+        $this->loop->removeWriteStream($output);
+
+        $this->tickLoop($this->loop);
+    }
+
+    public function testRemoveReadAndWriteStreamFromLoopOnceResourceClosesEndsLoop()
+    {
+        list($stream, $other) = $this->createSocketPair();
+        stream_set_blocking($stream, false);
+        stream_set_blocking($other, false);
+
+        // dummy writable handler
+        $this->loop->addWriteStream($stream, function () { });
+
+        // remove stream when the stream is readable (closes)
+        $loop = $this->loop;
+        $loop->addReadStream($stream, function ($stream) use ($loop) {
+            $loop->removeReadStream($stream);
+            $loop->removeWriteStream($stream);
+            fclose($stream);
+        });
+
+        // close other side
+        fclose($other);
+
+        $this->assertRunFasterThan($this->tickTimeout);
+    }
+
+    public function testRemoveReadAndWriteStreamFromLoopOnceResourceClosesOnEndOfFileEndsLoop()
+    {
+        list($stream, $other) = $this->createSocketPair();
+        stream_set_blocking($stream, false);
+        stream_set_blocking($other, false);
+
+        // dummy writable handler
+        $this->loop->addWriteStream($stream, function () { });
+
+        // remove stream when the stream is readable (closes)
+        $loop = $this->loop;
+        $loop->addReadStream($stream, function ($stream) use ($loop) {
+            $data = fread($stream, 1024);
+            if ($data !== '') {
+                return;
+            }
+
+            $loop->removeReadStream($stream);
+            $loop->removeWriteStream($stream);
+            fclose($stream);
+        });
+
+        // send data and close stream
+        fwrite($other, str_repeat('.', static::PHP_DEFAULT_CHUNK_SIZE));
+        $this->loop->addTimer(0.01, function () use ($other) {
+            fclose($other);
+        });
+
+        $this->assertRunFasterThan(0.1);
+    }
+
+    public function testRemoveReadAndWriteStreamFromLoopWithClosingResourceEndsLoop()
+    {
+        // get only one part of the pair to ensure the other side will close immediately
+        list($stream) = $this->createSocketPair();
+        stream_set_blocking($stream, false);
+
+        // dummy writable handler
+        $this->loop->addWriteStream($stream, function () { });
+
+        // remove stream when the stream is readable (closes)
+        $loop = $this->loop;
+        $loop->addReadStream($stream, function ($stream) use ($loop) {
+            $loop->removeReadStream($stream);
+            $loop->removeWriteStream($stream);
+            fclose($stream);
+        });
+
+        $this->assertRunFasterThan($this->tickTimeout);
+    }
+
+    public function testRemoveInvalid()
+    {
+        list ($stream) = $this->createSocketPair();
+
+        // remove a valid stream from the event loop that was never added in the first place
+        $this->loop->removeReadStream($stream);
+        $this->loop->removeWriteStream($stream);
+
+        $this->assertTrue(true);
+    }
+
+    /** @test */
+    public function emptyRunShouldSimplyReturn()
+    {
+        $this->assertRunFasterThan($this->tickTimeout);
+    }
+
+    /** @test */
+    public function runShouldReturnWhenNoMoreFds()
+    {
+        list ($input, $output) = $this->createSocketPair();
+
+        $loop = $this->loop;
+        $this->loop->addReadStream($input, function ($stream) use ($loop) {
+            $loop->removeReadStream($stream);
+        });
+
+        fwrite($output, "foo\n");
+
+        $this->assertRunFasterThan($this->tickTimeout * 2);
+    }
+
+    /** @test */
+    public function stopShouldStopRunningLoop()
+    {
+        list ($input, $output) = $this->createSocketPair();
+
+        $loop = $this->loop;
+        $this->loop->addReadStream($input, function ($stream) use ($loop) {
+            $loop->stop();
+        });
+
+        fwrite($output, "foo\n");
+
+        $this->assertRunFasterThan($this->tickTimeout * 2);
+    }
+
+    public function testStopShouldPreventRunFromBlocking()
+    {
+        $that = $this;
+        $this->loop->addTimer(
+            1,
+            function () use ($that) {
+                $that->fail('Timer was executed.');
+            }
+        );
+
+        $loop = $this->loop;
+        $this->loop->futureTick(
+            function () use ($loop) {
+                $loop->stop();
+            }
+        );
+
+        $this->assertRunFasterThan($this->tickTimeout * 2);
+    }
+
+    public function testIgnoreRemovedCallback()
+    {
+        // two independent streams, both should be readable right away
+        list ($input1, $output1) = $this->createSocketPair();
+        list ($input2, $output2) = $this->createSocketPair();
+
+        $called = false;
+
+        $loop = $this->loop;
+        $loop->addReadStream($input1, function ($stream) use (& $called, $loop, $input2) {
+            // stream1 is readable, remove stream2 as well => this will invalidate its callback
+            $loop->removeReadStream($stream);
+            $loop->removeReadStream($input2);
+
+            $called = true;
+        });
+
+        // this callback would have to be called as well, but the first stream already removed us
+        $that = $this;
+        $loop->addReadStream($input2, function () use (& $called, $that) {
+            if ($called) {
+                $that->fail('Callback 2 must not be called after callback 1 was called');
+            }
+        });
+
+        fwrite($output1, "foo\n");
+        fwrite($output2, "foo\n");
+
+        $loop->run();
+
+        $this->assertTrue($called);
+    }
+
+    public function testFutureTickEventGeneratedByFutureTick()
+    {
+        $loop = $this->loop;
+        $this->loop->futureTick(
+            function () use ($loop) {
+                $loop->futureTick(
+                    function () {
+                        echo 'future-tick' . PHP_EOL;
+                    }
+                );
+            }
+        );
+
+        $this->expectOutputString('future-tick' . PHP_EOL);
+
+        $this->loop->run();
+    }
+
+    public function testFutureTick()
+    {
+        $called = false;
+
+        $callback = function () use (&$called) {
+            $called = true;
+        };
+
+        $this->loop->futureTick($callback);
+
+        $this->assertFalse($called);
+
+        $this->tickLoop($this->loop);
+
+        $this->assertTrue($called);
+    }
+
+    public function testFutureTickFiresBeforeIO()
+    {
+        if ($this->loop instanceof ExtUvLoop && DIRECTORY_SEPARATOR === '\\') {
+            $this->markTestIncomplete('Ticking ExtUvLoop not supported on Windows');
+        }
+
+        list ($stream) = $this->createSocketPair();
+
+        $this->loop->addWriteStream(
+            $stream,
+            function () {
+                echo 'stream' . PHP_EOL;
+            }
+        );
+
+        $this->loop->futureTick(
+            function () {
+                echo 'future-tick' . PHP_EOL;
+            }
+        );
+
+        $this->expectOutputString('future-tick' . PHP_EOL . 'stream' . PHP_EOL);
+
+        $this->tickLoop($this->loop);
+    }
+
+    /**
+     * @depends testFutureTickFiresBeforeIO
+     */
+    public function testRecursiveFutureTick()
+    {
+        list ($stream) = $this->createSocketPair();
+
+        $loop = $this->loop;
+        $this->loop->addWriteStream(
+            $stream,
+            function () use ($stream, $loop) {
+                echo 'stream' . PHP_EOL;
+                $loop->removeWriteStream($stream);
+            }
+        );
+
+        $this->loop->futureTick(
+            function () use ($loop) {
+                echo 'future-tick-1' . PHP_EOL;
+                $loop->futureTick(
+                    function () {
+                        echo 'future-tick-2' . PHP_EOL;
+                    }
+                );
+            }
+        );
+
+        $this->expectOutputString('future-tick-1' . PHP_EOL . 'stream' . PHP_EOL . 'future-tick-2' . PHP_EOL);
+
+        $this->loop->run();
+    }
+
+    public function testRunWaitsForFutureTickEvents()
+    {
+        list ($stream) = $this->createSocketPair();
+
+        $loop = $this->loop;
+        $this->loop->addWriteStream(
+            $stream,
+            function () use ($stream, $loop) {
+                $loop->removeWriteStream($stream);
+                $loop->futureTick(
+                    function () {
+                        echo 'future-tick' . PHP_EOL;
+                    }
+                );
+            }
+        );
+
+        $this->expectOutputString('future-tick' . PHP_EOL);
+
+        $this->loop->run();
+    }
+
+    public function testFutureTickEventGeneratedByTimer()
+    {
+        $loop = $this->loop;
+        $this->loop->addTimer(
+            0.001,
+            function () use ($loop) {
+                $loop->futureTick(
+                    function () {
+                        echo 'future-tick' . PHP_EOL;
+                    }
+                );
+            }
+        );
+
+        $this->expectOutputString('future-tick' . PHP_EOL);
+
+        $this->loop->run();
+    }
+
+    public function testRemoveSignalNotRegisteredIsNoOp()
+    {
+        $this->loop->removeSignal(2, function () { });
+        $this->assertTrue(true);
+    }
+
+    /**
+     * @requires extension pcntl
+     */
+    public function testSignal()
+    {
+        if (!function_exists('posix_kill') || !function_exists('posix_getpid')) {
+            $this->markTestSkipped('Signal test skipped because functions "posix_kill" and "posix_getpid" are missing.');
+        }
+
+        $called = false;
+        $calledShouldNot = true;
+
+        $timer = $this->loop->addPeriodicTimer(1, function () {});
+
+        $this->loop->addSignal(SIGUSR2, $func2 = function () use (&$calledShouldNot) {
+            $calledShouldNot = false;
+        });
+
+        $loop = $this->loop;
+        $this->loop->addSignal(SIGUSR1, $func1 = function () use (&$func1, &$func2, &$called, $timer, $loop) {
+            $called = true;
+            $loop->removeSignal(SIGUSR1, $func1);
+            $loop->removeSignal(SIGUSR2, $func2);
+            $loop->cancelTimer($timer);
+        });
+
+        $this->loop->futureTick(function () {
+            posix_kill(posix_getpid(), SIGUSR1);
+        });
+
+        $this->loop->run();
+
+        $this->assertTrue($called);
+        $this->assertTrue($calledShouldNot);
+    }
+
+    /**
+     * @requires extension pcntl
+     */
+    public function testSignalMultipleUsagesForTheSameListener()
+    {
+        $funcCallCount = 0;
+        $func = function () use (&$funcCallCount) {
+            $funcCallCount++;
+        };
+        $this->loop->addTimer(1, function () {});
+
+        $this->loop->addSignal(SIGUSR1, $func);
+        $this->loop->addSignal(SIGUSR1, $func);
+
+        $this->loop->addTimer(0.4, function () {
+            posix_kill(posix_getpid(), SIGUSR1);
+        });
+        $loop = $this->loop;
+        $this->loop->addTimer(0.9, function () use (&$func, $loop) {
+            $loop->removeSignal(SIGUSR1, $func);
+        });
+
+        $this->loop->run();
+
+        $this->assertSame(1, $funcCallCount);
+    }
+
+    /**
+     * @requires extension pcntl
+     */
+    public function testSignalsKeepTheLoopRunning()
+    {
+        $loop = $this->loop;
+        $function = function () {};
+        $this->loop->addSignal(SIGUSR1, $function);
+        $this->loop->addTimer(1.5, function () use ($function, $loop) {
+            $loop->removeSignal(SIGUSR1, $function);
+            $loop->stop();
+        });
+
+        $this->assertRunSlowerThan(1.4);
+    }
+
+    /**
+     * @requires extension pcntl
+     */
+    public function testSignalsKeepTheLoopRunningAndRemovingItStopsTheLoop()
+    {
+        $loop = $this->loop;
+        $function = function () {};
+        $this->loop->addSignal(SIGUSR1, $function);
+        $this->loop->addTimer(1.5, function () use ($function, $loop) {
+            $loop->removeSignal(SIGUSR1, $function);
+        });
+
+        $this->assertRunFasterThan(1.6);
+    }
+
+    public function testTimerIntervalCanBeFarInFuture()
+    {
+        // Maximum interval for ExtUvLoop implementation
+        $interval = ((int) (PHP_INT_MAX / 1000)) - 1;
+        $loop = $this->loop;
+        // start a timer very far in the future
+        $timer = $this->loop->addTimer($interval, function () { });
+
+        $this->loop->futureTick(function () use ($timer, $loop) {
+            $loop->cancelTimer($timer);
+        });
+
+        $this->assertRunFasterThan($this->tickTimeout);
+    }
+
+    private function assertRunSlowerThan($minInterval)
+    {
+        $start = microtime(true);
+
+        $this->loop->run();
+
+        $end = microtime(true);
+        $interval = $end - $start;
+
+        $this->assertLessThan($interval, $minInterval);
+    }
+
+    private function assertRunFasterThan($maxInterval)
+    {
+        $start = microtime(true);
+
+        $this->loop->run();
+
+        $end = microtime(true);
+        $interval = $end - $start;
+
+        $this->assertLessThan($maxInterval, $interval);
+    }
+}

vendor/react/event-loop/tests/BinTest.php

@@ -0,0 +1,75 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+class BinTest extends TestCase
+{
+    /**
+     * @before
+     */
+    public function setUpBin()
+    {
+        if (!defined('PHP_BINARY') || defined('HHVM_VERSION')) {
+            $this->markTestSkipped('Tests not supported on legacy PHP 5.3 or HHVM');
+        }
+
+        chdir(__DIR__ . '/bin/');
+    }
+
+    public function testExecuteExampleWithoutLoopRunRunsLoopAndExecutesTicks()
+    {
+        $output = exec(escapeshellarg(PHP_BINARY) . ' 01-ticks-loop-class.php');
+
+        $this->assertEquals('abc', $output);
+    }
+
+    public function testExecuteExampleWithExplicitLoopRunRunsLoopAndExecutesTicks()
+    {
+        $output = exec(escapeshellarg(PHP_BINARY) . ' 02-ticks-loop-instance.php');
+
+        $this->assertEquals('abc', $output);
+    }
+
+    public function testExecuteExampleWithExplicitLoopRunAndStopRunsLoopAndExecutesTicksUntilStopped()
+    {
+        $output = exec(escapeshellarg(PHP_BINARY) . ' 03-ticks-loop-stop.php');
+
+        $this->assertEquals('abc', $output);
+    }
+
+    public function testExecuteExampleWithUncaughtExceptionShouldNotRunLoop()
+    {
+        $time = microtime(true);
+        exec(escapeshellarg(PHP_BINARY) . ' 11-uncaught.php 2>/dev/null');
+        $time = microtime(true) - $time;
+
+        $this->assertLessThan(1.0, $time);
+    }
+
+    public function testExecuteExampleWithUndefinedVariableShouldNotRunLoop()
+    {
+        $time = microtime(true);
+        exec(escapeshellarg(PHP_BINARY) . ' 12-undefined.php 2>/dev/null');
+        $time = microtime(true) - $time;
+
+        $this->assertLessThan(1.0, $time);
+    }
+
+    public function testExecuteExampleWithExplicitStopShouldNotRunLoop()
+    {
+        $time = microtime(true);
+        exec(escapeshellarg(PHP_BINARY) . ' 21-stop.php 2>/dev/null');
+        $time = microtime(true) - $time;
+
+        $this->assertLessThan(1.0, $time);
+    }
+
+    public function testExecuteExampleWithExplicitStopInExceptionHandlerShouldNotRunLoop()
+    {
+        $time = microtime(true);
+        exec(escapeshellarg(PHP_BINARY) . ' 22-uncaught-stop.php 2>/dev/null');
+        $time = microtime(true) - $time;
+
+        $this->assertLessThan(1.0, $time);
+    }
+}

vendor/react/event-loop/tests/ExtEvLoopTest.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use React\EventLoop\ExtEvLoop;
+
+class ExtEvLoopTest extends AbstractLoopTest
+{
+    public function createLoop()
+    {
+        if (!class_exists('EvLoop')) {
+            $this->markTestSkipped('ExtEvLoop tests skipped because ext-ev extension is not installed.');
+        }
+
+        return new ExtEvLoop();
+    }
+}

vendor/react/event-loop/tests/ExtEventLoopTest.php

@@ -0,0 +1,84 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use React\EventLoop\ExtEventLoop;
+
+class ExtEventLoopTest extends AbstractLoopTest
+{
+    public function createLoop($readStreamCompatible = false)
+    {
+        if ('Linux' === PHP_OS && !extension_loaded('posix')) {
+            $this->markTestSkipped('libevent tests skipped on linux due to linux epoll issues.');
+        }
+
+        if (!extension_loaded('event')) {
+            $this->markTestSkipped('ext-event tests skipped because ext-event is not installed.');
+        }
+
+        return new ExtEventLoop();
+    }
+
+    public function createStream()
+    {
+        // Use a FIFO on linux to get around lack of support for disk-based file
+        // descriptors when using the EPOLL back-end.
+        if ('Linux' === PHP_OS) {
+            $this->fifoPath = tempnam(sys_get_temp_dir(), 'react-');
+
+            unlink($this->fifoPath);
+
+            posix_mkfifo($this->fifoPath, 0600);
+
+            $stream = fopen($this->fifoPath, 'r+');
+
+        // ext-event (as of 1.8.1) does not yet support in-memory temporary
+        // streams. Setting maxmemory:0 and performing a write forces PHP to
+        // back this temporary stream with a real file.
+        //
+        // This problem is mentioned at https://bugs.php.net/bug.php?id=64652&edit=3
+        // but remains unresolved (despite that issue being closed).
+        } else {
+            $stream = fopen('php://temp/maxmemory:0', 'r+');
+
+            fwrite($stream, 'x');
+            ftruncate($stream, 0);
+        }
+
+        return $stream;
+    }
+
+    public function writeToStream($stream, $content)
+    {
+        if ('Linux' !== PHP_OS) {
+            return parent::writeToStream($stream, $content);
+        }
+
+        fwrite($stream, $content);
+    }
+
+    /**
+     * @group epoll-readable-error
+     */
+    public function testCanUseReadableStreamWithFeatureFds()
+    {
+        if (PHP_VERSION_ID > 70000) {
+            $this->markTestSkipped('Memory stream not supported');
+        }
+
+        $this->loop = $this->createLoop(true);
+
+        $input = fopen('php://temp/maxmemory:0', 'r+');
+
+        fwrite($input, 'x');
+        ftruncate($input, 0);
+
+        $this->loop->addReadStream($input, $this->expectCallableExactly(2));
+
+        fwrite($input, "foo\n");
+        $this->tickLoop($this->loop);
+
+        fwrite($input, "bar\n");
+        $this->tickLoop($this->loop);
+    }
+}

vendor/react/event-loop/tests/ExtLibevLoopTest.php

@@ -0,0 +1,22 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use React\EventLoop\ExtLibevLoop;
+
+class ExtLibevLoopTest extends AbstractLoopTest
+{
+    public function createLoop()
+    {
+        if (!class_exists('libev\EventLoop')) {
+            $this->markTestSkipped('libev tests skipped because ext-libev is not installed.');
+        }
+
+        return new ExtLibevLoop();
+    }
+
+    public function testLibEvConstructor()
+    {
+        $loop = new ExtLibevLoop();
+    }
+}

vendor/react/event-loop/tests/ExtLibeventLoopTest.php

@@ -0,0 +1,61 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use React\EventLoop\ExtLibeventLoop;
+
+class ExtLibeventLoopTest extends AbstractLoopTest
+{
+    private $fifoPath;
+
+    public function createLoop()
+    {
+        if ('Linux' === PHP_OS && !extension_loaded('posix')) {
+            $this->markTestSkipped('libevent tests skipped on linux due to linux epoll issues.');
+        }
+
+        if (!function_exists('event_base_new')) {
+            $this->markTestSkipped('libevent tests skipped because ext-libevent is not installed.');
+        }
+
+        return new ExtLibeventLoop();
+    }
+
+    /**
+     * @after
+     */
+    public function tearDownFile()
+    {
+        if (file_exists($this->fifoPath)) {
+            unlink($this->fifoPath);
+        }
+    }
+
+    public function createStream()
+    {
+        if ('Linux' !== PHP_OS) {
+            return parent::createStream();
+        }
+
+        $this->fifoPath = tempnam(sys_get_temp_dir(), 'react-');
+
+        unlink($this->fifoPath);
+
+        // Use a FIFO on linux to get around lack of support for disk-based file
+        // descriptors when using the EPOLL back-end.
+        posix_mkfifo($this->fifoPath, 0600);
+
+        $stream = fopen($this->fifoPath, 'r+');
+
+        return $stream;
+    }
+
+    public function writeToStream($stream, $content)
+    {
+        if ('Linux' !== PHP_OS) {
+            return parent::writeToStream($stream, $content);
+        }
+
+        fwrite($stream, $content);
+    }
+}

vendor/react/event-loop/tests/ExtUvLoopTest.php

@@ -0,0 +1,95 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use React\EventLoop\ExtUvLoop;
+
+class ExtUvLoopTest extends AbstractLoopTest
+{
+    public function createLoop()
+    {
+        if (!function_exists('uv_loop_new')) {
+            $this->markTestSkipped('uv tests skipped because ext-uv is not installed.');
+        }
+
+        return new ExtUvLoop();
+    }
+
+    /** @dataProvider intervalProvider */
+    public function testTimerInterval($interval, $expectedExceptionMessage)
+    {
+        $this->expectException('InvalidArgumentException');
+        $this->expectExceptionMessage($expectedExceptionMessage);
+
+        $this->loop
+            ->addTimer(
+                $interval,
+                function () {
+                    return 0;
+                }
+            );
+    }
+
+    public function intervalProvider()
+    {
+        $oversizeInterval = PHP_INT_MAX / 1000;
+        $maxValue = (int) (PHP_INT_MAX / 1000);
+        $oneMaxValue = $maxValue + 1;
+        $tenMaxValue = $maxValue + 10;
+        $tenMillionsMaxValue = $maxValue + 10000000;
+        $intMax = PHP_INT_MAX;
+        $oneIntMax = PHP_INT_MAX + 1;
+        $tenIntMax = PHP_INT_MAX + 10;
+        $oneHundredIntMax = PHP_INT_MAX + 100;
+        $oneThousandIntMax = PHP_INT_MAX + 1000;
+        $tenMillionsIntMax = PHP_INT_MAX + 10000000;
+        $tenThousandsTimesIntMax = PHP_INT_MAX * 1000;
+
+        return array(
+            array(
+                $oversizeInterval,
+                "Interval overflow, value must be lower than '{$maxValue}', but '{$oversizeInterval}' passed."
+            ),
+            array(
+                $oneMaxValue,
+                "Interval overflow, value must be lower than '{$maxValue}', but '{$oneMaxValue}' passed.",
+            ),
+            array(
+                $tenMaxValue,
+                "Interval overflow, value must be lower than '{$maxValue}', but '{$tenMaxValue}' passed.",
+            ),
+            array(
+                $tenMillionsMaxValue,
+                "Interval overflow, value must be lower than '{$maxValue}', but '{$tenMillionsMaxValue}' passed.",
+            ),
+            array(
+                $intMax,
+                "Interval overflow, value must be lower than '{$maxValue}', but '{$intMax}' passed.",
+            ),
+            array(
+                $oneIntMax,
+                "Interval overflow, value must be lower than '{$maxValue}', but '{$oneIntMax}' passed.",
+            ),
+            array(
+                $tenIntMax,
+                "Interval overflow, value must be lower than '{$maxValue}', but '{$tenIntMax}' passed.",
+            ),
+            array(
+                $oneHundredIntMax,
+                "Interval overflow, value must be lower than '{$maxValue}', but '{$oneHundredIntMax}' passed.",
+            ),
+            array(
+                $oneThousandIntMax,
+                "Interval overflow, value must be lower than '{$maxValue}', but '{$oneThousandIntMax}' passed.",
+            ),
+            array(
+                $tenMillionsIntMax,
+                "Interval overflow, value must be lower than '{$maxValue}', but '{$tenMillionsIntMax}' passed.",
+            ),
+            array(
+                $tenThousandsTimesIntMax,
+                "Interval overflow, value must be lower than '{$maxValue}', but '{$tenThousandsTimesIntMax}' passed.",
+            ),
+        );
+    }
+}

vendor/react/event-loop/tests/LoopTest.php

@@ -0,0 +1,216 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use React\EventLoop\Factory;
+use React\EventLoop\Loop;
+use ReflectionClass;
+
+final class LoopTest extends TestCase
+{
+    /**
+     * @dataProvider numberOfTests
+     */
+    public function testFactoryCreateSetsEventLoopOnLoopAccessor()
+    {
+        $factoryLoop = Factory::create();
+        $accessorLoop = Loop::get();
+
+        self::assertSame($factoryLoop, $accessorLoop);
+    }
+
+    /**
+     * @dataProvider numberOfTests
+     */
+    public function testCallingFactoryAfterCallingLoopGetYieldsADifferentInstanceOfTheEventLoop()
+    {
+        // Note that this behavior isn't wise and highly advised against. Always used Loop::get.
+        $accessorLoop = Loop::get();
+        $factoryLoop = Factory::create();
+
+        self::assertNotSame($factoryLoop, $accessorLoop);
+    }
+
+    /**
+     * @dataProvider numberOfTests
+     */
+    public function testCallingLoopGetShouldAlwaysReturnTheSameEventLoop()
+    {
+        self::assertSame(Loop::get(), Loop::get());
+    }
+
+    /**
+     * Run several tests several times to ensure we reset the loop between tests and code is still behavior as expected.
+     *
+     * @return array<array>
+     */
+    public function numberOfTests()
+    {
+        return array(array(), array(), array());
+    }
+
+    public function testStaticAddReadStreamCallsAddReadStreamOnLoopInstance()
+    {
+        $stream = tmpfile();
+        $listener = function () { };
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('addReadStream')->with($stream, $listener);
+
+        Loop::set($loop);
+
+        Loop::addReadStream($stream, $listener);
+    }
+
+    public function testStaticAddWriteStreamCallsAddWriteStreamOnLoopInstance()
+    {
+        $stream = tmpfile();
+        $listener = function () { };
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('addWriteStream')->with($stream, $listener);
+
+        Loop::set($loop);
+
+        Loop::addWriteStream($stream, $listener);
+    }
+
+    public function testStaticRemoveReadStreamCallsRemoveReadStreamOnLoopInstance()
+    {
+        $stream = tmpfile();
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('removeReadStream')->with($stream);
+
+        Loop::set($loop);
+
+        Loop::removeReadStream($stream);
+    }
+
+    public function testStaticRemoveWriteStreamCallsRemoveWriteStreamOnLoopInstance()
+    {
+        $stream = tmpfile();
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('removeWriteStream')->with($stream);
+
+        Loop::set($loop);
+
+        Loop::removeWriteStream($stream);
+    }
+
+    public function testStaticAddTimerCallsAddTimerOnLoopInstanceAndReturnsTimerInstance()
+    {
+        $interval = 1.0;
+        $callback = function () { };
+        $timer = $this->getMockBuilder('React\EventLoop\TimerInterface')->getMock();
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('addTimer')->with($interval, $callback)->willReturn($timer);
+
+        Loop::set($loop);
+
+        $ret = Loop::addTimer($interval, $callback);
+
+        $this->assertSame($timer, $ret);
+    }
+
+    public function testStaticAddPeriodicTimerCallsAddPeriodicTimerOnLoopInstanceAndReturnsTimerInstance()
+    {
+        $interval = 1.0;
+        $callback = function () { };
+        $timer = $this->getMockBuilder('React\EventLoop\TimerInterface')->getMock();
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('addPeriodicTimer')->with($interval, $callback)->willReturn($timer);
+
+        Loop::set($loop);
+
+        $ret = Loop::addPeriodicTimer($interval, $callback);
+
+        $this->assertSame($timer, $ret);
+    }
+
+    public function testStaticCancelTimerCallsCancelTimerOnLoopInstance()
+    {
+        $timer = $this->getMockBuilder('React\EventLoop\TimerInterface')->getMock();
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('cancelTimer')->with($timer);
+
+        Loop::set($loop);
+
+        Loop::cancelTimer($timer);
+    }
+
+    public function testStaticFutureTickCallsFutureTickOnLoopInstance()
+    {
+        $listener = function () { };
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('futureTick')->with($listener);
+
+        Loop::set($loop);
+
+        Loop::futureTick($listener);
+    }
+
+    public function testStaticAddSignalCallsAddSignalOnLoopInstance()
+    {
+        $signal = 1;
+        $listener = function () { };
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('addSignal')->with($signal, $listener);
+
+        Loop::set($loop);
+
+        Loop::addSignal($signal, $listener);
+    }
+
+    public function testStaticRemoveSignalCallsRemoveSignalOnLoopInstance()
+    {
+        $signal = 1;
+        $listener = function () { };
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('removeSignal')->with($signal, $listener);
+
+        Loop::set($loop);
+
+        Loop::removeSignal($signal, $listener);
+    }
+
+    public function testStaticRunCallsRunOnLoopInstance()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('run')->with();
+
+        Loop::set($loop);
+
+        Loop::run();
+    }
+
+    public function testStaticStopCallsStopOnLoopInstance()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('stop')->with();
+
+        Loop::set($loop);
+
+        Loop::stop();
+    }
+
+    /**
+     * @after
+     * @before
+     */
+    public function unsetLoopFromLoopAccessor()
+    {
+        $ref = new ReflectionClass('\React\EventLoop\Loop');
+        $prop = $ref->getProperty('instance');
+        $prop->setAccessible(true);
+        $prop->setValue(null);
+        $prop->setAccessible(false);
+    }
+}

vendor/react/event-loop/tests/SignalsHandlerTest.php

@@ -0,0 +1,58 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use React\EventLoop\SignalsHandler;
+
+final class SignalsHandlerTest extends TestCase
+{
+    /**
+     * @requires extension pcntl
+     */
+    public function testEmittedEventsAndCallHandling()
+    {
+        $callCount = 0;
+        $func = function () use (&$callCount) {
+            $callCount++;
+        };
+        $signals = new SignalsHandler();
+
+        $this->assertSame(0, $callCount);
+
+        $signals->add(SIGUSR1, $func);
+        $this->assertSame(0, $callCount);
+
+        $signals->add(SIGUSR1, $func);
+        $this->assertSame(0, $callCount);
+
+        $signals->add(SIGUSR1, $func);
+        $this->assertSame(0, $callCount);
+
+        $signals->call(SIGUSR1);
+        $this->assertSame(1, $callCount);
+
+        $signals->add(SIGUSR2, $func);
+        $this->assertSame(1, $callCount);
+
+        $signals->add(SIGUSR2, $func);
+        $this->assertSame(1, $callCount);
+
+        $signals->call(SIGUSR2);
+        $this->assertSame(2, $callCount);
+
+        $signals->remove(SIGUSR2, $func);
+        $this->assertSame(2, $callCount);
+
+        $signals->remove(SIGUSR2, $func);
+        $this->assertSame(2, $callCount);
+
+        $signals->call(SIGUSR2);
+        $this->assertSame(2, $callCount);
+
+        $signals->remove(SIGUSR1, $func);
+        $this->assertSame(2, $callCount);
+
+        $signals->call(SIGUSR1);
+        $this->assertSame(2, $callCount);
+    }
+}

vendor/react/event-loop/tests/StreamSelectLoopTest.php

@@ -0,0 +1,145 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use React\EventLoop\LoopInterface;
+use React\EventLoop\StreamSelectLoop;
+
+class StreamSelectLoopTest extends AbstractLoopTest
+{
+    /**
+     * @after
+     */
+    protected function tearDownSignalHandlers()
+    {
+        parent::tearDown();
+        if (strncmp($this->getName(false), 'testSignal', 10) === 0 && extension_loaded('pcntl')) {
+            $this->resetSignalHandlers();
+        }
+    }
+
+    public function createLoop()
+    {
+        return new StreamSelectLoop();
+    }
+
+    public function testStreamSelectTimeoutEmulation()
+    {
+        $this->loop->addTimer(
+            0.05,
+            $this->expectCallableOnce()
+        );
+
+        $start = microtime(true);
+
+        $this->loop->run();
+
+        $end = microtime(true);
+        $interval = $end - $start;
+
+        $this->assertGreaterThan(0.04, $interval);
+    }
+
+    public function signalProvider()
+    {
+        return array(
+            array('SIGUSR1'),
+            array('SIGHUP'),
+            array('SIGTERM'),
+        );
+    }
+
+    /**
+     * Test signal interrupt when no stream is attached to the loop
+     * @dataProvider signalProvider
+     * @requires extension pcntl
+     */
+    public function testSignalInterruptNoStream($signal)
+    {
+        // dispatch signal handler every 10ms for 0.1s
+        $check = $this->loop->addPeriodicTimer(0.01, function() {
+            pcntl_signal_dispatch();
+        });
+        $loop = $this->loop;
+        $loop->addTimer(0.1, function () use ($check, $loop) {
+            $loop->cancelTimer($check);
+        });
+
+        $handled = false;
+        $this->assertTrue(pcntl_signal(constant($signal), function () use (&$handled) {
+            $handled = true;
+        }));
+
+        // spawn external process to send signal to current process id
+        $this->forkSendSignal($signal);
+
+        $this->loop->run();
+        $this->assertTrue($handled);
+    }
+
+    /**
+     * Test signal interrupt when a stream is attached to the loop
+     * @dataProvider signalProvider
+     * @requires extension pcntl
+     */
+    public function testSignalInterruptWithStream($signal)
+    {
+        // dispatch signal handler every 10ms
+        $this->loop->addPeriodicTimer(0.01, function() {
+            pcntl_signal_dispatch();
+        });
+
+        // add stream to the loop
+        $loop = $this->loop;
+        list($writeStream, $readStream) = $this->createSocketPair();
+        $loop->addReadStream($readStream, function ($stream) use ($loop) {
+            /** @var $loop LoopInterface */
+            $read = fgets($stream);
+            if ($read === "end loop\n") {
+                $loop->stop();
+            }
+        });
+        $this->loop->addTimer(0.1, function() use ($writeStream) {
+            fwrite($writeStream, "end loop\n");
+        });
+
+        $handled = false;
+        $this->assertTrue(pcntl_signal(constant($signal), function () use (&$handled) {
+            $handled = true;
+        }));
+
+        // spawn external process to send signal to current process id
+        $this->forkSendSignal($signal);
+
+        $this->loop->run();
+
+        $this->assertTrue($handled);
+    }
+
+    /**
+     * reset all signal handlers to default
+     */
+    protected function resetSignalHandlers()
+    {
+        foreach($this->signalProvider() as $signal) {
+            pcntl_signal(constant($signal[0]), SIG_DFL);
+        }
+    }
+
+    /**
+     * fork child process to send signal to current process id
+     */
+    protected function forkSendSignal($signal)
+    {
+        $currentPid = posix_getpid();
+        $childPid = pcntl_fork();
+        if ($childPid == -1) {
+            $this->fail("Failed to fork child process!");
+        } else if ($childPid === 0) {
+            // this is executed in the child process
+            usleep(20000);
+            posix_kill($currentPid, constant($signal));
+            die();
+        }
+    }
+}

vendor/react/event-loop/tests/TestCase.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use PHPUnit\Framework\TestCase as BaseTestCase;
+use React\EventLoop\LoopInterface;
+
+class TestCase extends BaseTestCase
+{
+    protected function expectCallableExactly($amount)
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->exactly($amount))
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function expectCallableOnce()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function expectCallableNever()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->never())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function createCallableMock()
+    {
+        if (method_exists('PHPUnit\Framework\MockObject\MockBuilder', 'addMethods')) {
+            // PHPUnit 9+
+            return $this->getMockBuilder('stdClass')->addMethods(array('__invoke'))->getMock();
+        } else {
+            // legacy PHPUnit 4 - PHPUnit 9
+            return $this->getMockBuilder('stdClass')->setMethods(array('__invoke'))->getMock();
+        }
+    }
+
+    protected function tickLoop(LoopInterface $loop)
+    {
+        $loop->futureTick(function () use ($loop) {
+            $loop->stop();
+        });
+
+        $loop->run();
+    }
+}

vendor/react/event-loop/tests/Timer/AbstractTimerTest.php

@@ -0,0 +1,141 @@
+<?php
+
+namespace React\Tests\EventLoop\Timer;
+
+use React\EventLoop\LoopInterface;
+use React\Tests\EventLoop\TestCase;
+
+abstract class AbstractTimerTest extends TestCase
+{
+    /**
+     * @return LoopInterface
+     */
+    abstract public function createLoop();
+
+    public function testAddTimerReturnsNonPeriodicTimerInstance()
+    {
+        $loop = $this->createLoop();
+
+        $timer = $loop->addTimer(0.001, $this->expectCallableNever());
+
+        $this->assertInstanceOf('React\EventLoop\TimerInterface', $timer);
+        $this->assertFalse($timer->isPeriodic());
+    }
+
+    public function testAddTimerWillBeInvokedOnceAndBlocksLoopWhenRunning()
+    {
+        $loop = $this->createLoop();
+
+        $loop->addTimer(0.005, $this->expectCallableOnce());
+
+        $start = microtime(true);
+        $loop->run();
+        $end = microtime(true);
+
+        // 1 invocation should take 5ms (± a few milliseconds due to timer inaccuracies)
+        // make no strict assumptions about time interval, must at least take 1ms
+        // and should not take longer than 0.1s for slower loops.
+        $this->assertGreaterThanOrEqual(0.001, $end - $start);
+        $this->assertLessThan(0.1, $end - $start);
+    }
+
+    public function testAddPeriodicTimerReturnsPeriodicTimerInstance()
+    {
+        $loop = $this->createLoop();
+
+        $periodic = $loop->addPeriodicTimer(0.1, $this->expectCallableNever());
+
+        $this->assertInstanceOf('React\EventLoop\TimerInterface', $periodic);
+        $this->assertTrue($periodic->isPeriodic());
+    }
+
+    public function testAddPeriodicTimerWillBeInvokedUntilItIsCancelled()
+    {
+        $loop = $this->createLoop();
+
+        $periodic = $loop->addPeriodicTimer(0.1, $this->expectCallableExactly(3));
+
+        // make no strict assumptions about actual time interval.
+        // leave some room to ensure this ticks exactly 3 times.
+        $loop->addTimer(0.350, function () use ($loop, $periodic) {
+            $loop->cancelTimer($periodic);
+        });
+
+        $loop->run();
+    }
+
+    public function testAddPeriodicTimerWillBeInvokedWithMaximumAccuracyUntilItIsCancelled()
+    {
+        $loop = $this->createLoop();
+
+        $i = 0;
+        $periodic = $loop->addPeriodicTimer(0.001, function () use (&$i) {
+            ++$i;
+        });
+
+        $loop->addTimer(0.1, function () use ($loop, $periodic) {
+            $loop->cancelTimer($periodic);
+        });
+
+        $loop->run();
+
+        // make no strict assumptions about number of invocations.
+        // we know it must be no more than 100 times and should at least be
+        // invoked 4 times for really slow loops
+        $this->assertLessThanOrEqual(100, $i);
+        $this->assertGreaterThanOrEqual(4, $i);
+    }
+
+    public function testAddPeriodicTimerCancelsItself()
+    {
+        $loop = $this->createLoop();
+
+        $i = 0;
+        $loop->addPeriodicTimer(0.001, function ($timer) use (&$i, $loop) {
+            $i++;
+
+            if ($i === 5) {
+                $loop->cancelTimer($timer);
+            }
+        });
+
+        $start = microtime(true);
+        $loop->run();
+        $end = microtime(true);
+
+        $this->assertEquals(5, $i);
+
+        // 5 invocations should take 5ms (± 1ms due to timer inaccuracies)
+        // make no strict assumptions about time interval, must at least take 4ms
+        // and should not take longer than 0.2s for slower loops.
+        $this->assertGreaterThanOrEqual(0.004, $end - $start);
+        $this->assertLessThan(0.2, $end - $start);
+    }
+
+    public function testMinimumIntervalOneMicrosecond()
+    {
+        $loop = $this->createLoop();
+
+        $timer = $loop->addTimer(0, function () {});
+
+        $this->assertEquals(0.000001, $timer->getInterval());
+    }
+
+    public function testTimerIntervalBelowZeroRunsImmediately()
+    {
+        $loop = $this->createLoop();
+        $start = 0;
+        $loop->addTimer(
+            -1,
+            function () use (&$start) {
+                $start = \microtime(true);
+            }
+        );
+
+        $loop->run();
+        $end = \microtime(true);
+
+        // 1ms should be enough even on slow machines (± 1ms due to timer inaccuracies)
+        $this->assertLessThan(0.002, $end - $start);
+    }
+}

vendor/react/event-loop/tests/Timer/ExtEvTimerTest.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace React\Tests\EventLoop\Timer;
+
+use React\EventLoop\ExtEvLoop;
+
+class ExtEvTimerTest extends AbstractTimerTest
+{
+    public function createLoop()
+    {
+        if (!class_exists('EvLoop')) {
+            $this->markTestSkipped('ExtEvLoop tests skipped because ext-ev extension is not installed.');
+        }
+
+        return new ExtEvLoop();
+    }
+}

vendor/react/event-loop/tests/Timer/ExtEventTimerTest.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace React\Tests\EventLoop\Timer;
+
+use React\EventLoop\ExtEventLoop;
+
+class ExtEventTimerTest extends AbstractTimerTest
+{
+    public function createLoop()
+    {
+        if (!extension_loaded('event')) {
+            $this->markTestSkipped('ext-event tests skipped because ext-event is not installed.');
+        }
+
+        return new ExtEventLoop();
+    }
+}

vendor/react/event-loop/tests/Timer/ExtLibevTimerTest.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace React\Tests\EventLoop\Timer;
+
+use React\EventLoop\ExtLibevLoop;
+
+class ExtLibevTimerTest extends AbstractTimerTest
+{
+    public function createLoop()
+    {
+        if (!class_exists('libev\EventLoop')) {
+            $this->markTestSkipped('libev tests skipped because ext-libev is not installed.');
+        }
+
+        return new ExtLibevLoop();
+    }
+}

vendor/react/event-loop/tests/Timer/ExtLibeventTimerTest.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace React\Tests\EventLoop\Timer;
+
+use React\EventLoop\ExtLibeventLoop;
+
+class ExtLibeventTimerTest extends AbstractTimerTest
+{
+    public function createLoop()
+    {
+        if (!function_exists('event_base_new')) {
+            $this->markTestSkipped('libevent tests skipped because ext-libevent is not installed.');
+        }
+
+        return new ExtLibeventLoop();
+    }
+}

vendor/react/event-loop/tests/Timer/ExtUvTimerTest.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace React\Tests\EventLoop\Timer;
+
+use React\EventLoop\ExtUvLoop;
+
+class ExtUvTimerTest extends AbstractTimerTest
+{
+    public function createLoop()
+    {
+        if (!function_exists('uv_loop_new')) {
+            $this->markTestSkipped('uv tests skipped because ext-uv is not installed.');
+        }
+
+        return new ExtUvLoop();
+    }
+}

vendor/react/event-loop/tests/Timer/StreamSelectTimerTest.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace React\Tests\EventLoop\Timer;
+
+use React\EventLoop\StreamSelectLoop;
+
+class StreamSelectTimerTest extends AbstractTimerTest
+{
+    public function createLoop()
+    {
+        return new StreamSelectLoop();
+    }
+}

vendor/react/event-loop/tests/Timer/TimersTest.php

@@ -0,0 +1,40 @@
+<?php
+
+namespace React\Tests\EventLoop\Timer;
+
+use React\Tests\EventLoop\TestCase;
+use React\EventLoop\Timer\Timer;
+use React\EventLoop\Timer\Timers;
+
+class TimersTest extends TestCase
+{
+    public function testBlockedTimer()
+    {
+        $timers = new Timers();
+        $timers->tick();
+
+        // simulate a bunch of processing on stream events,
+        // part of which schedules a future timer...
+        sleep(1);
+        $timers->add(new Timer(0.5, function () {
+            $this->fail("Timer shouldn't be called");
+        }));
+
+        $timers->tick();
+
+        $this->assertTrue(true);
+    }
+
+    public function testContains()
+    {
+        $timers = new Timers();
+
+        $timer1 = new Timer(0.1, function () {});
+        $timer2 = new Timer(0.1, function () {});
+
+        $timers->add($timer1);
+
+        self::assertTrue($timers->contains($timer1));
+        self::assertFalse($timers->contains($timer2));
+    }
+}

vendor/react/event-loop/tests/bin/01-ticks-loop-class.php

@@ -0,0 +1,13 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../../vendor/autoload.php';
+
+Loop::futureTick(function () {
+    echo 'b';
+});
+Loop::futureTick(function () {
+    echo 'c';
+});
+echo 'a';

vendor/react/event-loop/tests/bin/02-ticks-loop-instance.php

@@ -0,0 +1,19 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../../vendor/autoload.php';
+
+$loop = Loop::get();
+
+$loop->futureTick(function () {
+    echo 'b';
+});
+
+$loop->futureTick(function () {
+    echo 'c';
+});
+
+echo 'a';
+
+$loop->run();

vendor/react/event-loop/tests/bin/03-ticks-loop-stop.php

@@ -0,0 +1,23 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../../vendor/autoload.php';
+
+$loop = Loop::get();
+
+$loop->futureTick(function () use ($loop) {
+    echo 'b';
+
+    $loop->stop();
+
+    $loop->futureTick(function () {
+        echo 'never';
+    });
+});
+
+echo 'a';
+
+$loop->run();
+
+echo 'c';

vendor/react/event-loop/tests/bin/11-uncaught.php

@@ -0,0 +1,11 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../../vendor/autoload.php';
+
+Loop::addTimer(10.0, function () {
+    echo 'never';
+});
+
+throw new RuntimeException();

vendor/react/event-loop/tests/bin/12-undefined.php

@@ -0,0 +1,11 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../../vendor/autoload.php';
+
+Loop::get()->addTimer(10.0, function () {
+    echo 'never';
+});
+
+$undefined->foo('bar');

vendor/react/event-loop/tests/bin/21-stop.php

@@ -0,0 +1,11 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../../vendor/autoload.php';
+
+Loop::addTimer(10.0, function () {
+    echo 'never';
+});
+
+Loop::stop();

vendor/react/event-loop/tests/bin/22-stop-uncaught.php

@@ -0,0 +1,16 @@
+<?php
+
+use React\EventLoop\Loop;
+
+require __DIR__ . '/../../vendor/autoload.php';
+
+Loop::addTimer(10.0, function () {
+    echo 'never';
+});
+
+set_exception_handler(function (Exception $e) {
+    echo 'Uncaught error occured' . PHP_EOL;
+    Loop::stop();
+});
+
+throw new RuntimeException();