frps + nginx 配置 websocket

nginx 配置如下：

server {
        listen 80;
        server_name *.frp.baidu.com;
        index index.htm index.html index.jsp;

        listen 443  ssl;
        #ssl on;
        ssl_certificate         /baidu.com.pem;
        ssl_certificate_key     /baidu.com.key;
        ssl_session_timeout 5m;
        ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE:ECDH:AES:HIGH:!NULL:!aNULL:!MD5:!ADH:!RC4;
        ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
        ssl_prefer_server_ciphers on;

        location / {
            proxy_pass http://localhost:7888;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header REMOTE-HOST $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;

            #######  这里配置  #########
            proxy_http_version 1.1;        
            proxy_read_timeout 28800s;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "Upgrade";
            ############################
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }

frp 客户端不需要特殊配置