PHP用swoole+websocket和redis实现web一对一聊天

2023-08-09 20:33:07 74

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=websocketfd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('127.0.0.1',6379);
$db=newmysqli('127.0.0.1','test','test','thinkphp5');

$server->on('open',function(swoole_websocket_server$server,$request){
echo"server:handshakesuccesswithfd{$request->fd}\n";//$request->fd是客户端id
});

$server->on('message',function(swoole_websocket_server$server,$frame){
$data=json_decode($frame->data,true);
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
$sql="SELECT`from`,contentFROMthinkphp5.app_offlineWHERE`to`='{$data['from']}'AND`from`='{$data['to']}'AND`status`='0'ORDERBYaddtimeASC;";
if($result=$GLOBALS['db']->query($sql)){
$re=array();
while($row=$result->fetch_assoc()){
array_push($re,$row);
}
$result->free();
foreach($reas$content){
$content=json_encode($content);
$server->push($frame->fd,$content);
}
//设置消息池中的消息为已发送
$sql="UPDATEthinkphp5.app_offlineSET`status`=1WHERE`to`='{$data['from']}'AND`from`='{$data['to']}';";
$GLOBALS['db']->query($sql);
}
}elseif($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($data['to']);//消息要发给谁
$fds=[];//所有在线的用户(打开聊天窗口的用户)
foreach($server->connectionsas$fd){
array_push($fds,$fd);
}
if(in_array($tofd,$fds)){
$tmp['from']=$data['from'];//消息来自于谁
$tmp['content']=$data['content'];//消息内容
$re=json_encode($tmp);
$server->push($tofd,$re);
}else{
//该玩家不在线(不在聊天室内)，将信息发送到离线消息池
$time=time();
$sql="INSERTINTOthinkphp5.app_offline(`to`,`from`,`content`,`status`,`addtime`)VALUES('{$data['to']}','{$data['from']}','{$data['content']}','0','{$time}');";
$GLOBALS['db']->query($sql);
}
}elseif($data['flag']=='group'){
//todo群聊

}elseif($data['flag']=='all'){
//全站广播
foreach($server->connectionsas$fd){
$server->push($fd,$data);
}
}
});

$server->on('close',function($ser,$fd){
echo"client{$fd}closed\n";
});

$server->start();

客户端代码：




XST-app










body{background:url(/static/images/yuyin_bg.jpg);background-size:100%;}
@mediaalland(min-width:640px){
body,html,.wenwen-footer,.speak_window{width:640px!important;margin:0auto}
.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:solid1px#ddd;box-sizing:border-box;}
.wenwen_btn,.wenwen_help{width:15%;text-align:center;}
.wenwen_btnimg,.wenwen_helpimg{height:40px;}
.wenwen_text{height:40px;border-radius:5px;border:solid1px#636162;box-sizing:border-box;width:66%;text-align:center;overflow:hidden;margin-left:2%;}
.circle-button{padding:05px;}
.wenwen_text.circle-button{font-size:14px;color:#666;line-height:38px;}
.write_box{background:#fff;width:100%;height:40px;line-height:40px;}
.write_boxinput{height:40px;padding:05px;line-height:40px;width:100%;box-sizing:border-box;border:0;}
.wenwen_helpbutton{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_imgimg{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_textp,.answer_textp{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_textp{background:#fff;}
.question_textp{background:#42929d;color:#fff;text-align:left;}
.question_texti,.answer_texti{width:0;height:0;border-top:5pxsolidtransparent;border-bottom:5pxsolidtransparent;position:absolute;top:25px;}
.answer_texti{border-right:10pxsolid#fff;left:10px;}
.question_texti{border-left:10pxsolid#42929d;right:10px;}
.answer_textpa{color:#42929d;display:inline-block;}
.write_list{position:absolute;left:0;width:100%;background:#fff;border-top:solid1px#ddd;padding:5px;line-height:30px;}








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PHP用swoole+websocket和redis实现web一对一聊天

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