nginx 反向代理google

利用nginx反向代理做一个谷歌镜像，实现谷歌访问。
准备：
一个可以解析的域名。
一台可以访问goole的服务器，并配置nginx，开启ssl。具体方法见：
配置免费ssl证书LetEncrypt，开启全民https时代

nginx配置
在http下添加

server {
        listen       80;
        server_name  127.0.0.1;
        location / {
          rewrite ^(.*)$  https://www.example.com$1 permanent;  #重写为https
        }
}
server {
    listen       443 ssl; 
    server_name  127.0.0.1;

    ssl_certificate      /usr/local/nginx/conf/www.example.com.cer;
    ssl_certificate_key  /usr/local/nginx/conf/www.example.com.key;

    ssl_session_cache    shared:SSL:1m;
    ssl_session_timeout  5m;

    ssl_ciphers  HIGH:!aNULL:!MD5;
    ssl_prefer_server_ciphers  on;
    underscores_in_headers on;
    add_header Access-Control-Allow-Origin *;
    add_header Access-Control-Allow-Headers X-Requested-With;
    add_header Access-Control-Allow-Methods GET,POST,OPTIONS;
    location / {
        proxy_redirect off;
        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 https;
        proxy_redirect http://www.google.com/ /;
        proxy_cookie_domain google.com guance.com;
        proxy_set_header Accept-Encoding "";
        proxy_set_header User-Agent $http_user_agent;
        proxy_set_header Accept-Language "zh-CN";
        proxy_set_header Cookie "PREF=ID=047808f19f6de346:U=0f62f33dd8549d11:FF=2:LD=zh-CN:NW=1:TM=1325338577:LM=1332142444:GM=1:SG=2:S=rE0SyJh2W1IQ-Maw";
        proxy_connect_timeout      240;
        proxy_send_timeout         240;
        proxy_read_timeout         240;
        # note, there is not SSL here! plain HTTP is used
        proxy_pass https://www.google.com;
        sub_filter www.google.com www.example.com;
        sub_filter_once off; 
    }
}