socket.io连接https

只能使用nginx代理转发
client：

 // 创建socket连接，使用wss协议
        const socket = io('wss://www.xxx.world', {
            reconnectionAttempts: 10,
            query: {
                uid: this.state.user.uid
            }
        })

nginx:

// 在server模块下加入一个location配置，代理地址使用ip加端口号
location /socket.io/ {
            proxy_pass http://68.168.128.247:7001;           
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "Upgrade";
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header Host $host;
        }