Олег Ас

public function getFile($file_id)
    {
        $file_data = Files::where('fileable_id', $file_id)->first();
        $file = "/var/project/{$file_data['path']}/{$file_data['original_name']}";
        header('Content-type:'.$file_data['content_type']);
        header('Content-Disposition: attachment;filename=' . md5($file_data['original_name']));
        header('Cache-Control: must-revalidate');
        header('Content-Length: ' . filesize($file));
        readfile($file);
    }

<?php
namespace MyApp;
use Ratchet\MessageComponentInterface;
use Ratchet\ConnectionInterface;

class Msg implements MessageComponentInterface {
    public function onOpen(ConnectionInterface $conn) {
    }

    public function onMessage(ConnectionInterface $from, $msg) {
    }

    public function onClose(ConnectionInterface $conn) {
    }

    public function onError(ConnectionInterface $conn, \Exception $e) {
    }
}

<?php
use Ratchet\Server\IoServer;
use MyApp\Msg;

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

    $server = IoServer::factory(
        new Msg(),
        8080
    );

    $server->run();

<?php

    require __DIR__ . '/vendor/autoload.php';

    \Ratchet\Client\connect('ws://192.168.1.100:8080')->then(function($conn) {
        $conn->on('message', function($msg) use ($conn) {
            echo "Received: {$msg}\n";
            $conn->close();
        });

        $conn->send('Hello World!');
    }, function ($e) {
        echo "Could not connect: {$e->getMessage()}\n";
    });