首先,我想说下写代码的一些习惯,第一,任何可配置的参数或变量都要写到一个config文件中。第二,代码中一定要有日志记录和完善的报错并记录报错。言归正传,swoole应该是每个phper必须要了解的,它号称重新定义了php。此聊天室利用了swoole高并发并且异步非阻塞的特点提高了程序的性能。
首先,定义一个 swoole_lock 和 swoole_websocket_server ,并且配置参数,具体参数详情可以去swoole官网查看。
- 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'));
- //Vevb.com
- // 启动服务
- $this->server->start();
- }
当有客户端链接时,简单记录客户端的信息。
- public function onOpen($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);
- }
当有客户端发送信息时,对信息进行处理。
- 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)
- {
- //Vevb.com
- // 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' . $task_id . 'Finished' . PHP_EOL);
- }
最后,当客户端断开链接时,利用锁机制,同步删除客户端信息,并记录日志。
- public function onClose($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');
- }
服务端完了,下面就是客户端,很简单,只需要用websocket链接就ok!
- // 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');
- };
详细代码可以去我的github下载
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