php - 为什么websocket可以关闭连接？

Question

使用 Ratchet/ react 。

如果我的连接数少于 1000，它运行良好，但是当连接数增加时 - websockets 连接后自动关闭。

是什么原因？

cat /proc/sys/fs/file-nr
5696    0   815941

open files (-n) 16384

cat /proc/sys/fs/file-max 
815941

Answer 1

On socketo.me this is adressed in the Deployment tab.

A Unix philosophy is "everything is a file". This means each user connecting to your WebSocket application is represented as a file somewhere. A security feature of every Unix based OS is to limit the number of file descriptors one running application may have open at a time. On many systems this default is 1024. This would mean if you had 1024 users currently connected to your WebSocket server anyone else attempting to connect would fail to do so.

他们还建议更改次要配置以允许更多连接。如果问题没有解决，您可以尝试使用 libevent 或禁用 XDebug，尽管这可能不是必需的。