clue/reactphp-eventsource

Event-driven EventSource client, receiving streaming messages from any HTML5 Server-Sent Events (SSE) server, built on top of ReactPHP.

Note: This project is in early alpha stage! Feel free to report any issues you encounter.

Table of contents

• Quickstart example
• Usage
  • EventSource
• Install
• Tests
• License

Quickstart example

Once installed, you can use the following code to stream messages from any Server-Sent Events (SSE) server endpoint:

$loop = Factory::create();
$es = new EventSource('https://example.com/stream.php', $loop);

$es->on('message', function (MessageEvent $message) {
    //$data = json_decode($message->data);
    var_dump($message);
});

$loop->run();

See the examples.

Usage

EventSource

The EventSource class is responsible for communication with the remote Server-Sent Events (SSE) endpoint.

The EventSource object works very similar to the one found in common web browsers. Unless otherwise noted, it follows the same semantics as defined under https://html.spec.whatwg.org/multipage/server-sent-events.html

It requires the URL to the remote Server-Sent Events (SSE) endpoint and also registers everything with the main EventLoop in order to handle async HTTP requests.

$loop = \React\EventLoop\Factory::create();

$es = new \Clue\React\EventSource\EventSource('https://example.com/stream.php', $loop);

If you need custom connector settings (DNS resolution, TLS parameters, timeouts, proxy servers etc.), you can explicitly pass a custom instance of the ConnectorInterface to the Browser instance and pass it as an additional argument to the EventSource like this:

$connector = new \React\Socket\Connector($loop, array(
    'dns' => '127.0.0.1',
    'tcp' => array(
        'bindto' => '192.168.10.1:0'
    ),
    'tls' => array(
        'verify_peer' => false,
        'verify_peer_name' => false
    )
));
$browser = new \Clue\React\Buzz\Browser($loop, $connector);

$es = new \Clue\React\EventSource\EventSource('https://example.com/stream.php', $loop, $browser);

Install

The recommended way to install this library is through Composer. New to Composer?

This will install the latest supported version:

$ composer require clue/reactphp-eventsource:dev-master

This project aims to run on any platform and thus does not require any PHP extensions and supports running on legacy PHP 5.4 through current PHP 7+. It's highly recommended to use PHP 7+ for this project.

Tests

To run the test suite, you first need to clone this repo and then install all dependencies through Composer:

$ composer install

To run the test suite, go to the project root and run:

$ php vendor/bin/phpunit

License

This project is released under the permissive MIT license.

Did you know that I offer custom development services and issuing invoices for sponsorships of releases and for contributions? Contact me (@clue) for details.