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实现离线消息池

2020-04-15 04:55

Redis 实现每个连接websocket的服务都唯一绑定一个用户。通过 用户账号 = websocket fd 存到redis中。

Mysql 实现离线消息池。如果一个用户不在线,则其他用户发送给他的消息暂时存储在mysql。待该用户上线时,再从离线消息池取出发送。

具体参考代码和相应注释:

connect;$db = new mysqli('127.0.0.1', 'test', 'test', 'thinkphp5');$server->on('open', function (swoole_websocket_server $server, $request) { echo "server: handshake success with fd{$request->fd}n";//$request->fd 是客户端id});$server->on('message', function (swoole_websocket_server $server, $frame) { $data = json_decode; if($data['flag'] == 'init'){ //用户刚连接的时候初始化,每个用户登录时记录该用户对应的fd $GLOBALS['redis']->set($data['from'], $frame->fd); //处理发给该用户的离线消息 $sql = "SELECT `from`,content FROM thinkphp5.app_offline WHERE `to`='{$data['from']}' AND `from`='{$data['to']}' AND `status`='0' ORDER BY addtime ASC;"; if ($result = $GLOBALS['db']->query { $re = array(); while ($row = $result->fetch_assoc { array_push; } $result->free(); foreach{ $content = json_encode; $server->push($frame->fd , $content); } //设置消息池中的消息为已发送 $sql = "UPDATE thinkphp5.app_offline SET `status`=1 WHERE `to`='{$data['from']}' AND `from`='{$data['to']}';"; $GLOBALS['db']->query; } }else if($data['flag'] == 'msg'){ //非初始化的信息发送,一对一聊天,根据每个用户对应的fd发给特定用户 $tofd = $GLOBALS['redis']->get; //消息要发给谁 $fds = []; //所有在线的用户 foreach($server->connections as $fd){ array_push; } if{ $tmp['from'] = $data['from']; //消息来自于谁 $tmp['content'] = $data['content']; //消息内容 $re = json_encode; $server->push; }else{ //该玩家不在线,将信息发送到离线消息池 $time = time(); $sql = "INSERT INTO thinkphp5.app_offline (`to`,`from`,`content`,`status`,`addtime`) VALUES ('{$data['to']}','{$data['from']}','{$data['content']}','0','{$time}');"; $GLOBALS['db']->query; } }else if($data['flag'] == 'group'){ //todo 群聊 }else if($data['flag'] == 'all'){ //全站广播 foreach($server->connections as $fd){ $server->push;$server->on('close', function  { echo "client {$fd} closedn";});$server->start();

 XST-app  body{background:url(/static/images/yuyin_bg.jpg);background-size:100%;} @media all and  { body,html,.wenwen-footer,.speak_window{width:640px!important;margin:0 auto} .speak_window,.wenwen-footer{left:50%!important;margin-left:-320px} } input,button{outline:none;} .wenwen-footer{width:100%;position:fixed;bottom:-5px;left:0;background:#fff;padding:3%;border-top:solid 1px #ddd;box-sizing:border-box;} .wenwen_btn,.wenwen_help{width:15%;text-align:center;} .wenwen_btn img,.wenwen_help img{height:40px;} .wenwen_text{height:40px;border-radius:5px;border:solid 1px #636162;box-sizing:border-box;width:66%;text-align:center;overflow:hidden;margin-left:2%;} .circle-button{padding:0 5px;} .wenwen_text .circle-button{font-size:14px;color:#666;line-height:38px;} .write_box{background:#fff;width:100%;height:40px;line-height:40px;} .write_box input{height:40px;padding:0 5px;line-height:40px;width:100%;box-sizing:border-box;border:0;} .wenwen_help button{width:95%;background:#42929d;color:#fff;border-radius:5px;border:0;height:40px;} #wenwen{height:100%;} .speak_window{overflow-y:scroll;height:100%;width:100%;position:fixed;top:50px;left:0;} .speak_box{margin-bottom:70px;padding:10px;} .question,.answer{margin-bottom:1rem;} .question{text-align:right;} .question>div{display:inline-block;} .left{float:left;} .right{float:right;} .clear{clear:both;} .heard_img{height:60px;width:60px;border-radius:5px;overflow:hidden;background:#ddd;} .heard_img img{width:100%;height:100%} .question_text,.answer_text{box-sizing:border-box;position:relative;display:table-cell;min-height:60px;} .question_text{padding-right:20px;} .answer_text{padding-left:20px;} .question_text p,.answer_text p{border-radius:10px;padding:.5rem;margin:0;font-size:14px;line-height:28px;box-sizing:border-box;vertical-align:middle;display:table-cell;height:30px;word-wrap:break-word;} .answer_text p{background:#fff;} .question_text p{background:#42929d;color:#fff;text-align:left;} .question_text i,.answer_text i{width:0;height:0;border-top:5px solid transparent;border-bottom:5px solid transparent;position:absolute;top:25px;} .answer_text i{border-right:10px solid #fff;left:10px;} .question_text i{border-left:10px solid #42929d;right:10px;} .answer_text p a{color:#42929d;display:inline-block;} .write_list{position:absolute;left:0;width:100%;background:#fff;border-top:solid 1px #ddd;padding:5px;line-height:30px;}     与 {$tonickname} 的聊天            发送   if ("WebSocket" in window){ var ws = new WebSocket("ws://192.168.0.1:9052"); ws.onopen = function(){ console.log; var myemail = $; var toemail = $; var arr = {"flag":"init","from":myemail,"to":toemail}; var str = JSON.stringify; }; ws.onmessage = function{ var toemail = $; var toavatar = $; var obj = JSON.parse; console.log; //但同时与两个人聊天时,可能两个人的消息都会出现在当前窗口,所以此处加个判断,此窗口只接收当前聊天对象的消息,其他则忽略 if{ var ans = '<div ><div ><img src="'+toavatar+'"></div>'; ans += '<div ><p>'+obj.content+'</p><i></i>'; ans += '</div></div>'; $.append; } }; ws.onerror = function(){ console.log; var str = '<div >'; str += '<div ><img src="/static/images/xitong.jpg"></div>'; str += '<div ><p>聊天服务器出现异常,暂时无法提供服务。</p><i></i>'; str += '</div></div>'; $.append; $.val; $.focus; for_bottom { var content = $.val{ alert; $.focus(); }else{ var toemail = $; var myemail = $; var myavatar = $; var arr = {"flag":"msg","to":toemail,"from":myemail,"content":content}; var msg = JSON.stringify; console.log; var str = '<div >'; str += '<div ><img src="'+myavatar+'"></div>'; str += '<div ><p>'+content+'</p><i></i>'; str += '</div></div>'; $.append; $.val; $.focus; for_bottom(); } } }else{ alert("您的浏览器不支持 WebSocket!"); } function for_bottom(){ var speak_height = $.height(); $('.speak_box,.speak_window').animate({scrollTop:speak_height},500); } function autoWidth(){ $.css('max-width',$-60); } autoWidth(); 

CREATE TABLE `app_offline`  NOT NULL AUTO_INCREMENT, `from` varchar DEFAULT NULL COMMENT '离线发送方', `to` varchar DEFAULT NULL COMMENT '离线接收方', `content` varchar DEFAULT NULL COMMENT '发送的离线内容', `status` tinyint DEFAULT '0' COMMENT '发送状态:0-未发送,1-已发送', `addtime` int DEFAULT NULL COMMENT '发送方发送时间', PRIMARY KEY  ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8

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