http sever在达到max_request时请求会出错

[kant712]

如下列代码所示，我起了一个http server，在onRequest事件中，去发一个http请求。
设置worker_num为1，max_request为5。现象是当我第5次调用时，请求就一直挂在那，没有任何应答，同时http server也没有任何报错。
然而，如果在onRequest事件中的处理逻辑中不发http请求，则一起正常。

<?php
$http = new Swoole\Http\Server( "168.63.129.93" , 9501 );
$http->set( [
    'worker_num' => 1 ,
    'max_request' => 5 ,
] );
$http->on( "request" , function( $request , $response )
{
    $swooleClient = new \Co\Http\Client( '168.63.129.51' , 8081 );
    $swooleClient->set( [
        'timeout' => 1 ,
        'keep_alive' => false ,
    ] );
    $swooleClient->post( '/sleep' , [ 'time' => '50' ] );
    $response->write( $swooleClient->body );
    return;
} );
$http->start();

Swoole => enabled
Author => Swoole Team <team@swoole.com>
Version => 4.3.2
Built => Apr 17 2019 16:32:48
coroutine => enabled
epoll => enabled
eventfd => enabled
signalfd => enabled
cpu_affinity => enabled
spinlock => enabled
rwlock => enabled
http2 => enabled
pcre => enabled
zlib => enabled
mutex_timedlock => enabled
pthread_barrier => enabled
futex => enabled
async_redis => enabled
Directive => Local Value => Master Value
swoole.enable_coroutine => On => On
swoole.display_errors => On => On
swoole.use_shortname => On => On
swoole.unixsock_buffer_size => 8388608 => 8388608

[matyhtf]

请启用 reload_async 选项

[kant712]

请启用 reload_async 选项

已解决，谢谢！