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+<?php
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+namespace app\socketio\controller;
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+
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+use Workerman\Worker;
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+use Workerman\Timer;
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+use PHPSocketIO\SocketIO;
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+use Workerman\Protocols\Http\Request;
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+use Workerman\Connection\TcpConnection;
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+
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+class Server
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+{
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+ // 全局数组保存uid在线数据
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+ private $uidConnectionMap = array();
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+ // 记录最后一次广播的在线用户数
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+ private $last_online_count = 0;
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+ // 记录最后一次广播的在线页面数
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+ private $last_online_page_count = 0;
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+
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+ public function index(){
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+ header("Access-Control-Allow-Origin: *");
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+ // PHPSocketIO服务
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+ $sender_io = new SocketIO(2120);
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+ // 客户端发起连接事件时，设置连接socket的各种事件回调
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+ $sender_io->on('connection', function($socket){
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+ // 当客户端发来登录事件时触发
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+ $socket->on('login', function ($uid)use($socket){
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+ // global $uidConnectionMap, $last_online_count, $last_online_page_count;
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+ // 已经登录过了
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+ if(isset($socket->uid)){
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+ return;
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+ }
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+ // 更新对应uid的在线数据
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+ $uid = (string)$uid;
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+ if(!isset($this->uidConnectionMap[$uid]))
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+ {
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+ $this->uidConnectionMap[$uid] = 0;
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+ }
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+ // 这个uid有++$uidConnectionMap[$uid]个socket连接
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+ ++$this->uidConnectionMap[$uid];
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+ // 将这个连接加入到uid分组，方便针对uid推送数据
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+ $socket->join($uid);
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+ $socket->uid = $uid;
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+ // 更新这个socket对应页面的在线数据
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+ $socket->emit('update_online_count', "当前<b>{$this->last_online_count}</b>人在线，共打开<b>{$this->last_online_page_count}</b>个页面");
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+ });
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+
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+ // 当客户端断开连接是触发（一般是关闭网页或者跳转刷新导致）
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+ $socket->on('disconnect', function () use($socket) {
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+ if(!isset($socket->uid))
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+ {
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+ return;
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+ }
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+ // global $uidConnectionMap, $sender_io;
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+ // 将uid的在线socket数减一
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+ if(--$this->uidConnectionMap[$socket->uid] <= 0)
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+ {
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+ unset($this->uidConnectionMap[$socket->uid]);
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+ }
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+ });
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+ });
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+
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+ // 当$sender_io启动后监听一个http端口，通过这个端口可以给任意uid或者所有uid推送数据
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+ $sender_io->on('workerStart', function() use ($sender_io) {
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+ // 监听一个http端口
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+ $inner_http_worker = new Worker('http://0.0.0.0:2121');
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+ // 当http客户端发来数据时触发
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+ $inner_http_worker->onMessage = function(TcpConnection $http_connection, Request $request) use ($sender_io) {
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+ // global $uidConnectionMap;
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+ $post = $request->post();
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+ $post = $post ? $post : $request->get();
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+ // 推送数据的url格式 type=publish&to=uid&content=xxxx
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+ switch(@$post['type']){
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+ case 'publish':
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+ // global $sender_io;
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+ $to = @$post['to'];
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+ $post['content'] = htmlspecialchars(@$post['content']);
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+ // 有指定uid则向uid所在socket组发送数据
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+ if($to){
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+ $sender_io->to($to)->emit('new_msg', $post['content']);
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+ // 否则向所有uid推送数据
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+ }else{
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+ $sender_io->emit('new_msg', @$post['content']);
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+ }
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+ // http接口返回，如果用户离线socket返回fail
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+ if($to && !isset($this->uidConnectionMap[$to])){
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+ return $http_connection->send('offline');
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+ }else{
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+ return $http_connection->send('ok');
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+ }
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+ }
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+ return $http_connection->send('fail');
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+ };
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+ // 执行监听
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+ $inner_http_worker->listen();
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+
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+ // 一个定时器，定时向所有uid推送当前uid在线数及在线页面数
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+ Timer::add(1, function() use ($sender_io) {
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+ // global $uidConnectionMap, $sender_io, $last_online_count, $last_online_page_count;
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+ $online_count_now = count($this->uidConnectionMap);
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+ $online_page_count_now = array_sum($this->uidConnectionMap);
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+ // 只有在客户端在线数变化了才广播，减少不必要的客户端通讯
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+ if($this->last_online_count != $online_count_now || $this->last_online_page_count != $online_page_count_now)
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+ {
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+ $sender_io->emit('update_online_count', "当前<b>{$online_count_now}</b>人在线，共打开<b>{$online_page_count_now}</b>个页面");
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+ $this->last_online_count = $online_count_now;
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+ $this->last_online_page_count = $online_page_count_now;
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+ }
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+ });
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+ });
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+
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+ if(!defined('GLOBAL_START'))
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+ {
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+ Worker::runAll();
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+ }
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+ }
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+} |
