Error during WebSocket handshake: net::ERR_CONNECTION_RESET

有没有大哥帮我看看这是咋回事
我用的是 gateway
连接的时候 一下可以 一下不行的
这是nginx的配置

server
{
      listen 20005;
      listen 443 ssl http2;
    server_name chatnew.test.com;
    root /www/wwwroot/testnew;

    #SSL-START SSL相关配置，请勿删除或修改下一行带注释的404规则
    #error_page 404/404.html;
    ssl_certificate    /www/server/panel/vhost/cert/chatnew.test.com/fullchain.pem;
    ssl_certificate_key    /www/server/panel/vhost/cert/chatnew.test.com/privkey.pem;
    ssl_protocols SSLv3 SSLv2 TLSv1 TLSv1.1 TLSv1.2;
    ssl_ciphers EECDH+CHACHA20:EECDH+CHACHA20-draft:EECDH+AES128:RSA+AES128:EECDH+AES256:RSA+AES256:EECDH+3DES:RSA+3DES:!MD5;
    ssl_prefer_server_ciphers on;
    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 10m;
    add_header Strict-Transport-Security "max-age=31536000";
    error_page 497  https://$host$request_uri;

    #SSL-END

    location /wss {
        proxy_redirect off;
        proxy_pass http://ip:20005;      # 转发
        proxy_set_header Host $host;
        proxy_set_header X-Real_IP $remote_addr;
        proxy_set_header X-Forwarded-For $remote_addr:$remote_port;
    }
}

这是前断连接的

var ws = new WebSocket("ws://chatnew.test.com:20005");

一会可以一会不行