用swoole和websocket开发简单聊天室

public function start()
{
     $this->lock = new swoole_lock(SWOOLE_MUTEX);　　　　　　　　　　　　// 对文件或数组进行锁操作，已达到同步
     $this->server = new swoole_websocket_server($this->addr, $this->port);　　// swoole提供的Websocket Server
     $this->server->set(array(
           ‘daemonize‘ => 0,
           ‘worker_num‘ => 4,
           ‘task_worker_num‘ => 10,
           ‘max_request‘ => 1000,
           ‘log_file‘ => ROOT_PATH . ‘storage\\logs\\swoole.log‘      // swoole日志路径，必须是绝对路径
      ));

      $this->server->on(‘open‘, array($this, ‘onOpen‘));
      $this->server->on(‘message‘, array($this, ‘onMessage‘));
      $this->server->on(‘task‘, array($this, ‘onTask‘));
      $this->server->on(‘finish‘, array($this, ‘onFinish‘));
      $this->server->on(‘close‘, array($this, ‘onClose‘));

　　  // 启动服务
     $this->server->start();
}

        public function onOpen($server, $request)
        {
            $message = array(
                ‘remote_addr‘ => $request->server[‘remote_addr‘],
                ‘request_time‘ => date(‘Y-m-d H:i:s‘, $request->server[‘request_time‘])
            );
            write_log($message);
        }

        public function onMessage($server, $frame)
        {
            $data = json_decode($frame->data);

            switch ($data->type) {
                case ‘init‘:
                case ‘INIT‘:
                    $this->users[$frame->fd] = $data->message;　　// 记录每个链接的信息，同样不要尝试打印出来看，因为你只能看到自己的链接信息
                    $message = ‘欢迎‘ . $data->message . ‘加入了聊天室‘;
                    $response = array(
                        ‘type‘ => 1,    // 1代表系统消息，2代表用户聊天
                        ‘message‘ => $message
                    );
                    break;
                case ‘chat‘:
                case ‘CHAT‘:
                    $message = $data->message;
                    $response = array(
                        ‘type‘ => 2,    // 1代表系统消息，2代表用户聊天
                        ‘username‘ => $this->users[$frame->fd],
                        ‘message‘ => $message
                    );
                    break;
                default:
                    return false;
            }
　　　　　　　　
　　　　　　　// 将信息交给task处理
            $this->server->task($response);
        }

        public function onTask($server, $task_id, $from_id, $message)
        {
　　　　　　　// 迭代所有的客户端链接，将消息推送过去。（如果你尝试将 $this->server->connections 打印出来，那么你会发现他是空的。但当时用 foreach 去循环时，它确实有用。）
            foreach ($this->server->connections as $fd) {
                $this->server->push($fd, json_encode($message));
            }
            $server->finish( ‘Task‘ . $task_id . ‘Finished‘ . PHP_EOL);
        }

        public function onClose($server, $fd)
        {
            $username = $this->users[$fd];
            // 释放客户端，利用锁进行同步
            $this->lock->lock();
            unset($this->users[$fd]);
            $this->lock->unlock();

            if( $username ) {
                $response = array(
                    ‘type‘ => 1,    // 1代表系统消息，2代表用户聊天
                    ‘message‘ => $username . ‘离开了聊天室‘
                );
                $this->server->task($response);
            }


            write_log( $fd . ‘ disconnected‘);
        }

        // websocket
        let address = ‘ws://<?php echo CLIENT_CONNECT_ADDR . ‘:‘ . CLIENT_CONNECT_PORT ?>‘;
        let webSocket = new WebSocket(address);
        webSocket.onerror = function (event) {
            alert(‘服务器连接错误，请稍后重试‘);
        };
        webSocket.onopen = function (event) {
            if(!sessionStorage.getItem(‘username‘)) {
                setName();
            }else {
                username = sessionStorage.getItem(‘username‘)
                webSocket.send(JSON.stringify({
                    ‘message‘: username,
                    ‘type‘: ‘init‘
                }));
            }
        };
        webSocket.onmessage = function (event) {
            console.log(event);
            let data = JSON.parse(event.data);
            if (data.type == 1) {
                $(‘#chat-list2‘).append(‘<li class="ui-border-tb"><span class="username">系统消息:</span><span class="message">‘ + data.message + ‘</span></li>‘);
            } else if (data.type == 2) {
                $(‘#chat-list2‘).append(‘<li class="ui-border-tb"><span class="username">‘ + data.username + ‘:</span><span class="message">‘ + data.message + ‘</span></li>‘);
            }

        };
        webSocket.onclose = function (event) {
            alert(‘散了吧，服务器都关了‘);
        };