整体逻辑:在聊天室页面,前期发送消息按钮不能点击,需要先登录,然后用户登录之后,在 login.php 方法验证用户信息,并使用 jwt 生成 token 并返回,前端收到 token 之后,可以选择保存到cookie中,也可以只在此页面短时间使用,在建立 websocket 链接的时候,带过去 token 信息,swoole 在 open 事件中收到 token, 解析 token, 如果验证失败则断开链接,成功则可以聊天。
个人写的 demo 在 swoole 文件夹下,在此文件夹下执行 composer require firebase/php-jwt
,安装 jwt 包,使用具体可以参考包文档。其他所需是 swoole.html, login.php, swoole.php 三个前后端页面,代码如下:
swoole.html
<!DOCTYPE html>
<html>
<head>
<title>swoole chat room</title>
<meta charset="UTF-8">
<script type="text/javascript">
if(window.WebSocket){
// 端口和ip地址对应不要写错
var login = function () {
var name = document.getElementById('name').value;
var data = new FormData();
data.append('name', name);
var request = new XMLHttpRequest();
request.open("post", 'login.php');
request.send(data);
request.onload = function() {
if(request.readyState === 4 && request.status == 200) {
var webSocket = new WebSocket("ws://127.0.0.1:9502?token=" + request.responseText);
webSocket.onopen = function (event) {
//webSocket.send("Hello,WebSocket!");
};
webSocket.onmessage = function (event) {
var content = document.getElementById('content');
content.innerHTML = content.innerHTML.concat('<p style="margin-left:20px;height:20px;line-height:20px;">'+event.data+'</p>');
};
// 处理发送事件
var sendButton = document.getElementById('send');
sendButton.disabled = false;
sendButton.innerHTML = '发送';
sendButton.onclick = function(){
var data = document.getElementById('message').value;
webSocket.send(data);
};
} else {
alert('error');
}
};
}
}else{
console.log("您的浏览器不支持WebSocket");
}
</script>
</head>
<body>
<div style="width:600px;margin:0 auto;border:1px solid #ccc;">
<div style="height:40px">
<input type="text" id="name" style="margin-left:10px;height:25px;width:450px;">
<button onclick="login()" style="height:28px;width:75px;">登录</button>
</div>
<hr />
<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 id="send" style="height:28px;width:75px;" disabled="disabled">登录后可以发送</button>
</div>
</div>
</body>
</html>
login.php
<?php
require __DIR__.'/vendor/autoload.php';
use Firebase\JWT\JWT;
// 前提检查用户信息,验证通过则返回数据,demo 跳过这步
// 文档地址: https://packagist.org/packages/firebase/php-jwt
$key = "swoole";
$token = array(
"iss" => "localhost",
"aud" => "localhost",
"iat" => time(),
"nbf" => time() + 3600,
"name" => $_POST['name']
);
$jwt = JWT::encode($token, $key);
echo $jwt;
swoole.php
<?php
require 'vendor/autoload.php';
use Firebase\JWT\JWT;
$server = new swoole_websocket_server("0.0.0.0", 9502);
$server->on('open', function ($server, $request) {
$key = 'swoole';
$token = $request->get['token'] ?? '';
$decode = JWT::decode($token, $key, ['HS256']);
if (!$decode) {
$server->close($request->fd);
return false;
}
$decodeArray = (array)$decode;
$server->push($request->fd, "hello;" . $decodeArray['name'] . "\n");
});
$server->on('message', function (swoole_websocket_server $server, $request) {
$server->push($request->fd, "hello");
});
$server->on('close', function ($server, $fd) {
echo "client-{$fd} is closed\n";
$server->close($fd);
});
$server->start();
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