WyriHaximus / reactphp-child-process-messenger

examples/error/index.php

<?php

require \dirname(\dirname(__DIR__)) . '/vendor/autoload.php';

use React\EventLoop\Factory;
use WyriHaximus\React\ChildProcess\Messenger\Factory as MessengerFactory;
use WyriHaximus\React\ChildProcess\Messenger\Messages\Factory as MessageFactory;
use WyriHaximus\React\ChildProcess\Messenger\Messages\Payload;
use WyriHaximus\React\ChildProcess\Messenger\Messenger;

$loop = Factory::create();

The function React\EventLoop\Factory::create() has been deprecated: 1.2.0 See Loop::get() instead.

MessengerFactory::parentFromClass('\ExamplesChildProcess', $loop)->then(function (Messenger $messenger) {
    return $messenger->rpc(
        MessageFactory::rpc('error')
    )->always(function () use ($messenger) {

The method always() does not exist on React\Promise\PromiseInterface. It seems like you code against a sub-type of said class. However, the method does not exist in React\Promise\CancellablePromiseInterface. Are you sure you never get one of those?

        $messenger->softTerminate();
    });
})->done(function (Payload $result) {

The parameter $result is not used and could be removed.

    throw new Exception('Should never reach this!');
}, function ($et) {
    echo (string)$et;
});

$loop->run();