前言

ThinkPHP即将迎来最新版本6.0，针对目前越来越流行Swoole，thinkphp也推出了最新的扩展think-swoole 3.0。

介绍

即将推出的tp6.0，已经适配swoole.并推出think-swoole 3.0，并且默认适配了socketio。和2.0版本在使用方法上面有些许不同。

Websocket 继承与Http，进行websocket连接之前需要一次HTTP请求，如果当期地址支持websocket则返回101，然后进行连接。也就是说并不是我的服务支持websocket后，请求每个连接地址都可以进行websocket连接，而是需要预先适配才可以连接。

参数配置

'server' => [        'host' => '0.0.0.0', // 监听地址'port' => 808, // 监听端口'mode' => SWOOLE_PROCESS, // 运行模式 默认为SWOOLE_PROCESS'sock_type' => SWOOLE_SOCK_TCP, // sock type 默认为SWOOLE_SOCK_TCP'options' => [            'pid_file' => runtime_path() . 'swoole.pid',            'log_file' => runtime_path() . 'swoole.log',            'daemonize' => false,            // Normally this value should be 1~4 times larger according to your cpu cores.'reactor_num' => swoole_cpu_num(),            'worker_num' => swoole_cpu_num(),            'task_worker_num' => 4,//swoole_cpu_num(),'enable_static_handler' => true,            'document_root' => root_path('public'),            'package_max_length' => 20 * 1024 * 1024,            'buffer_output_size' => 10 * 1024 * 1024,            'socket_buffer_size' => 128 * 1024 * 1024,            'max_request' => 3000,            'send_yield' => true,],],    'websocket' => [        'enabled' => true,// 开启websocket'handler' => Handler::class,  //自定义wbesocket绑定类'parser' => Parser::class, //自定义解析类'route_file' => base_path() . 'websocket.php',        'ping_interval' => 25000,        'ping_timeout' => 60000,        'room' => [            'type' => TableRoom::class,            'room_rows' => 4096,            'room_size' => 2048,            'client_rows' => 8192,            'client_size' => 2048,],],    'auto_reload' => true,    'enable_coroutine' => true,    'resetters' => [],    'tables' => [],

handler和parser大大方便了自定义websocket服务，默认系统集成socketio。

本文主要介绍如何使用socketio，这里假设大家有socketio有一定了解和使用基础。

socketIo默认会在请求地址后加相应的参数

同时，socketio默认情况下，会认为 http://url/http://socket.io/ 是支持websocket服务的地址。

而在tp-swoole3.0内部已经对该地址请求进行了处理

<?phpnamespace think\swoole\websocket\socketio;use think\Config;use think\Cookie;use think\Request;class Controller{    protected $transports = ['polling', 'websocket'];    public function upgrade(Request $request, Config $config, Cookie $cookie){        if (!in_array($request->param('transport'), $this->transports)) {            return json([                    'code' => 0,                    'message' => 'Transport unknown',],                400);}        if ($request->has('sid')) {$response = response('1:6');} else {$sid = base64_encode(uniqid());$payload = json_encode([                    'sid' => $sid,                    'upgrades' => ['websocket'],                    'pingInterval' => $config->get('swoole.websocket.ping_interval'),                    'pingTimeout' => $config->get('swoole.websocket.ping_timeout'),]);$cookie->set('io', $sid);$response = response('97:0' . $payload . '2:40');}        return $response->contentType('text/plain');}    public function reject(Request $request){        return json([                'code' => 3,                'message' => 'Bad request',],            400);}}

TP6.0,插件注册采用了service方式进行了注册，可在tp-swoole 服务注册文件中查看路由注册信息,如果想自定义链接规则，则可以覆盖该路由。

 <?php// +----------------------------------------------------------------------// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]// +----------------------------------------------------------------------// | Copyright (c) 2006-2018 http://thinkphp.cn All rights reserved.// +----------------------------------------------------------------------// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )// +----------------------------------------------------------------------// | Author: yunwuxin <448901948@qq.com>// +----------------------------------------------------------------------namespace think\swoole;use Swoole\Http\Server as HttpServer;use Swoole\Websocket\Server as WebsocketServer;use think\App;use think\Route;use think\swoole\command\Server as ServerCommand;use think\swoole\facade\Server;use think\swoole\websocket\socketio\Controller;use think\swoole\websocket\socketio\Middleware;class Service extends \think\Service{    protected $isWebsocket = false;    /*** @var HttpServer | WebsocketServer*/protected static $server;    public function register(){        $this->isWebsocket = $this->app->config->get('swoole.websocket.enabled', false);        $this->app->bind(Server::class, function () {            if (is_null(static::$server)) {                $this->createSwooleServer();}            return static::$server;});        $this->app->bind('swoole.server', Server::class);        $this->app->bind(Swoole::class, function (App $app) {            return new Swoole($app);});        $this->app->bind('swoole', Swoole::class);}    public function boot(Route $route){        $this->commands(ServerCommand::class);        if ($this->isWebsocket) {$route->group(function () use ($route) {$route->get('socket.io/', '@upgrade');$route->post('socket.io/', '@reject');})->prefix(Controller::class)->middleware(Middleware::class);}}    /*** Create swoole server.*/protected function createSwooleServer(){$server = $this->isWebsocket ? WebsocketServer::class : HttpServer::class;$config = $this->app->config;$host = $config->get('swoole.server.host');$port = $config->get('swoole.server.port');$socketType = $config->get('swoole.server.socket_type', SWOOLE_SOCK_TCP);$mode = $config->get('swoole.server.mode', SWOOLE_PROCESS);        static::$server = new $server($host, $port, $mode, $socketType);$options = $config->get('swoole.server.options');        static::$server->set($options);}}

Socketio默认使用demo

<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Title</title><script src="./static/js/socket.io.js"></script></head><body><script>const socket = io('http://localhost:808');socket.emit("test", "your message");socket.on("test",function(res){console.log(res)});</script></body></html>

Websocket路由配置方法

在app目录下新建websocket.php文件,其中需要注意，由于使用了反射，闭包参数名称不能随意定义，不然无法注入。第一个参数是websocket，是当前websocket的Server对象，第二个参数data是客户端发送的数据。其中socketio emit的第一个参数和Websocket::on的第一个参数一致，作为事件名称。

<?php/*** Author:Xavier Yang* Date:2019/6/5* Email:499873958@qq.com*/use \think\swoole\facade\Websocket;Websocket::on("test", function (\think\swoole\Websocket $websocket, $data) {    //var_dump($class);$websocket->emit("test", "asd");});Websocket::on("test1", function ($websocket, $data) {$websocket->emit("test", "asd");});Websocket::on("join", function (\think\swoole\Websocket $websocket, $data) {$websocket->join("1");});

参考如上方法即可使用全新的websocket服务。当然tp-swoole3.0同样还有许多其他的新功能，这些功能需要大家去摸索尝试。
我也会在接下来的文章中，一起与大家分享我的使用过程。
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