由于服务升级成https了，websocket还是http的，前端通过ws://xxx报错跨域，将前端代码改成了wss，然后打算用nginx再代理回http的地址，现在代理配置了没生效，wss地址一直连接不通,nginx版本为1.20.1，请问会是版本太低导致的问题吗？1.20.1支持websocket配置吗？配置如下：

server {

       server_name serverName ;

       listen       port ssl;

       server_name  serverName;

       ssl_certificate      /etc/nginx/cert/server.crt;

       ssl_certificate_key  /etc/nginx/cert/server.key;

       ssl_session_cache    shared:SSL:1m;

       ssl_session_timeout  10m;

       ssl_protocols        TLSv1 TLSv1.1 TLSv1.2;

       ssl_ciphers          ECDHE-RSA-AES128-GCM-SHA256:HIGH:!aNULL:!MD5:!RC4:!DHE;

       ssl_prefer_server_ciphers    on;

   location /mqtt {

       proxy_pass http://socketIp:port/mqtt;

       proxy_http_version 1.1;

       proxy_set_header Upgrade $http_upgrade;

       proxy_set_header Connection "upgrade";

       proxy_set_header Host $host;

       proxy_set_header X-Real-IP $remote_addr;

       proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

       proxy_set_header X-Forwarded-Proto $scheme;

       proxy_read_timeout 60s;

       proxy_send_timeout 60s;

}

}