还有一种就是同一个端口实现websocket和http服务，只要在set中增加一条 'open_http_protocol' => true,
并且实现onrequest的回调即可，代码如下：
<?php
$server = new Swoole\Websocket\Server("0.0.0.0", 9502);
$server->set([
'open_http_protocol' => true,
]);
$server->on('open', function($server, $req) {
echo "connection open: {$req->fd}\n";
});
$server->on('request', function($request, $response) {
$response->header("Content-Type", "text/html; charset=utf-8");
$response->end("<h1>OK.</h1>");
});
$server->on('message', function($server, $frame) {
echo "received message: {$frame->data}\n";
$server->push($frame->fd, json_encode(["hello", "world"]));
});
$server->on('close', function($server, $fd) {
echo "connection close: {$fd}\n";
});
$server->start();
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