src/Socket/Enhanced/Server.php
static function create(string $app, ?string $listen = null, ?array $ssl = null, bool $businessWorker = true) {
        parent::create($app);
        self::$_apps[$app] = new self($app, $listen, $ssl);
        if ($businessWorker)
            self::$_apps[$app]->addBusinessWorker();
        return self::$_apps[$app];
    }
static function create(string $app, ?string $listen = null, ?array $ssl = null, bool $businessWorker = true) {
        parent::create($app);
        self::$_apps[$app] = new self($app, $listen, $ssl);
        if ($businessWorker)
            self::$_apps[$app]->addBusinessWorker();
        return self::$_apps[$app];
    }
创建服务

@param string $app
@param null|string $listen
@param array|null $ssl
@param bool $businessWorker
@return Server