Bug:too many open files
![image](https://user-images.githubusercontent.com/31975916/173868249-94762edb-1a32-4e4f-a4c7-404fdf52337a.png)
After giving this error, a performance connection cannot be established.
it doesn't fix without restarting the proxy.
It works normally between 15 minutes and 1 hour and then gives this error.

> {
    "access-log-file": "access_proxy.log",
    "log-file": "proxyl.log",
    "algo": "cn-heavy/xhv",
    "api": {
        "id": null,
        "worker-id": null
    },
    "http": {
	"enabled": true,
	"host": "0.0.0.0",
	"port": 62,
	"access-token": "d5",
	"restricted": true
        },
    "background": false,
    "bind": [
        "0.0.0.0:61"
    ],
    "colors": true,
    "donate-level": 0,
    "log-file": null,
    "mode": "nicehash",
    "pools": [
        {
            "url": "tr.haven.herominers.com:1110",
            "user": "h***",
            "pass": "pp2a44",
            "algo": "cn-heavy/xhv", 
            "keepalive": true,
            "tls": false,
            "tls-fingerprint": null
        },
        {
            "url": "de.haven.herominers.com:1110",
            "user": "h***",
            "pass": "pp2a44",
            "algo": "cn-heavy/xhv",
            "keepalive": true,
            "tls": false,
            "tls-fingerprint": null
        },
        {
            "url": "fi.haven.herominers.com:1110",
            "user": "h***",
            "pass": "pp2a44",
            "algo": "cn-heavy/xhv", 
            "keepalive": true,
            "variant": -1,
            "tls": false,
            "tls-fingerprint": null
        },
    ],
    "retries": 5,
    "retry-pause": 2,
    "syslog": "syslog.log",
    "verbose": false,
    "workers": true
}

