Websocket：配置Nginx支持wss

部署过程中遇到以下异常

Mixed Content: The page at 'https://www.xxx.com' was loaded over HTTPS, but attempted to connect to the insecure WebSocket endpoint 'ws://www.xxx.com:8084/socket.io/?&EIO=3&transport=websocket'. This request has been blocked; this endpoint must be available over WSS.

服务端：socketIO
目标：实现wss支持
方案：配置Nginx

upstream websocket {
    // 内网websocket IP地址
    server 192.168.0.235:8084;
}
server {
        resolver 8.8.8.8;
        ssl_stapling on;
        ssl_stapling_verify on;
        listen   443 ssl;
        server_name  www.xxx.com;
        proxy_buffering off;
        ssl on;
        ssl_certificate  /etc/nginx/newtranx.com/fullchain.pem;
        ssl_certificate_key  /etc/nginx/newtranx.com/privkey.pem;
        
        // 此处省略其他配置


        location /socket.io {  
          proxy_pass http://websocket;  
          proxy_http_version 1.1;  
          proxy_set_header Upgrade $http_upgrade;  
          proxy_set_header Connection "Upgrade";  
        }
}

ps: proxy_pass http://websocket中的websocket对应upstream后面的名称
参考：https://blog.csdn.net/chopin407/article/details/52937645