websocket是不一樣於http的另一種網絡通訊協議,可以進行雙向通訊,基於此,可開發出各類實時通訊產品,我簡單作了個聊天室demo,順便分享一下。javascript
PHP的swoole擴展,正如做者所說,是PHP的異步、並行、高性能網絡通訊引擎,使用純C語言編寫,提供了PHP語言的異步多線程服務器,異步TCP/UDP網絡客戶端,異步MySQL,異步Redis,數據庫鏈接池,AsyncTask,消息隊列,毫秒定時器,異步文件讀寫,異步DNS查詢。 Swoole內置了Http/WebSocket服務器端/客戶端、Http2.0服務器端。php
本demo用swoole來作server端,client端使用html5 websocket api,使用redis set數據結構存儲鏈接標識。具體代碼以下:html
1,websocket.php:html5
<?php /** * Created by PhpStorm. * User: purelightme * Date: 2017/7/30 * Time: 15:24 */ $ws_server = new swoole_websocket_server('0.0.0.0', 9502); $redis = new Redis(); $redis->connect('127.0.0.1', 6379); //$redis->flushAll();exit; $ws_server->on('open', function ($ws, $request) use ($redis) { $redis->sAdd('fd', $request->fd); }); $ws_server->on('message', function ($ws, $frame) use ($redis) { global $redis; $fds = $redis->sMembers('fd'); foreach ($fds as $fd){ $ws->push($fd,$frame->fd.'--'.$frame->data); //發送二進制數據: $ws->push($fd,file_get_contents('http://imgsrc.baidu.com/imgad/pic/item/267f9e2f07082838b5168c32b299a9014c08f1f9.jpg'),WEBSOCKET_OPCODE_BINARY); } }); //監聽WebSocket鏈接關閉事件 $ws_server->on('close', function ($ws, $fd) use ($redis) { $redis->sRem('fd',$fd); }); $ws_server->start();
2,websocket.html:java
<!DOCTYPE html> <html> <head> <title></title> <meta charset="UTF-8"> <script type="text/javascript"> if(window.WebSocket){ var webSocket = new WebSocket("ws://0.0.0.0:9502"); webSocket.onopen = function (event) { //webSocket.send("Hello,WebSocket!"); }; webSocket.onmessage = function (event) { var content = document.getElementById('content'); if(event.data instanceof Blob) { var img = document.createElement("img"); img.src = window.URL.createObjectURL(event.data); content.appendChild(img); }else { content.innerHTML = content.innerHTML.concat('<p style="margin-left:20px;height:20px;line-height:20px;">用戶id-'+event.data+'</p>'); } }; var sendMessage = function(){ var data = document.getElementById('message').value; webSocket.send(data); document.getElementById('message').value = ''; } }else{ console.log("您的瀏覽器不支持WebSocket"); } </script> </head> <body> <div style="width:600px;margin:0 auto;border:1px solid #ccc;"> <div id="content" style="overflow-y:auto;height:300px;"></div> <hr/> <div style="height:40px"> <input type="text" id="message" style="margin-left:10px;height:25px;width:450px;"> <button onclick="sendMessage()" style="height:28px;width:75px;">發送</button> </div> </div> </body> </html>
效果大概以下圖,感興趣的能夠本身研究研究。。。mysql