首先使用composer安装cboden/ratchet类包以及相关依赖

composer require cboden/ratchet

然后，创建WebsocketController控制器

<?php
namespace App\Http\Controllers;
use Illuminate\Support\Facades\Log;
use Ratchet\ConnectionInterface;
use Ratchet\MessageComponentInterface;
class WebsocketController extends Controller implements MessageComponentInterface
{
    protected $clients;
    public function __construct()
    {
        $this->clients = new \SplObjectStorage();
    }
    public function onOpen(ConnectionInterface $conn) {
        //存储连接的websocket链接，用于待会返回消息
        $this->clients->attach($conn);
    }
    public function onMessage(ConnectionInterface $from, $msg) {
        foreach ($this->clients as $client){
            if($from != $client){
                //发送消息给所有连接的客户端（除开发送者）
                $client->send($msg);
            }
        }
    }
    public function onClose(ConnectionInterface $conn) {
        $this->clients->detach($conn);
    }
    public function onError(ConnectionInterface $conn, \Exception $e) {
        $conn->close();
    }
}

控制器创建完成后，使用laravel的命令行命令创建command

php artisan make:console websocket laravel:websocket

该语句会在app\console\commands目录下创建websocket.php文件

修改websocket.php

<?php
namespace App\Console\Commands;
use App\Http\Controllers\WebsocketController;
use Illuminate\Console\Command;
class Websocket extends Command
{
    /**
     * The name and signature of the console command.
     *
     * @var string
     */
    protected $signature = 'laravel:websocket';
    /**
     * The console command description.
     *
     * @var string
     */
    protected $description = 'Command description';
    /**
     * Create a new command instance.
     *
     * @return void
     */
    protected $app;
    public function __construct()
    {
        parent::__construct();
        //
        $app = new \Ratchet\App('192.168.31.66', 2345,'0.0.0.0');
        $app->route('/chat', new WebsocketController(), array('*'));
//        $app->route('/echo', new \Ratchet\Server\EchoServer, array('*'));
        $app->run();
    }
    public function handle()
    {
        echo "success!!";
    }
}

命令创建完成后，在laravel目录根目录位置打开控制台，输入

php artisan laravel:websocket

就会开启一个独立的后台程序运行该程序

最后，前台连接websoket

var conn = new WebSocket('ws://192.168.31.66:2345/chat');
    conn.onopen = function (ev) {
        console.log('已连接');
     };
    conn.onerror = function(){
        setTimeout(connected,2000);
     }；
     conn.onmessage = function(){
     };

至此，一个简单的websocket应用就实现了，可以实现简单的全屏通知