Nginx 代理 Gravatar头像服务

Gravatar 头像服务入口, 都在海外, 经常超时, 所以我们在国内添加入口

http {
  ......
  proxy_cache_path /dev/shm/proxy_cache_gravatar levels=1:2 keys_zone=ngx_proxy_cache_gravatar:8m inactive=1d max_size=128m;
  ......
}

server
{
    listen 80;
    listen [::]:80;
    listen 443 ssl http2;
    listen [::]:443 ssl http2; 
    server_name gravatar.aikaiyuan.com;

    proxy_buffering on;
    proxy_buffer_size 32k;
    proxy_buffers 4 64k;
    proxy_busy_buffers_size 128k;
    proxy_temp_file_write_size  1m;
    proxy_cache ngx_proxy_cache_gravatar;
    proxy_ignore_headers Expires Set-Cookie Cache-Control;
    proxy_hide_header Cache-Control;
    proxy_hide_header Set-Cookie;
    proxy_hide_header Expires;
    proxy_pass_header X-Forwarded-For;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_http_version 1.1;
    add_header Aikaiyuan-Cache "$upstream_cache_status from Cache";

    ssl_certificate      ssl/gravatar.aikaiyuan.com.crt;
    ssl_certificate_key  ssl/gravatar.aikaiyuan.com.key;

    include ssl/main.conf;

    include HSTS.conf;

    location = /favicon.ico {
        root html;
    }

    location /avatar {

        valid_referers none blocked aikaiyuan.com *.aikaiyuan.com;
        if ($invalid_referer) {
            rewrite ^/ http://www.aikaiyuan.com/;
        }

        proxy_cache_key $host$uri;
        proxy_cache_valid 200 100d;
        proxy_cache_valid 404 2s;
        proxy_redirect / /;

        proxy_pass http://secure.gravatar.com;
        proxy_set_header Host "secure.gravatar.com";
        proxy_set_header Accept-Encoding "";
        proxy_set_header User-Agent $http_user_agent;

    }

修改主题模版 function.php 添加如下配置：

//gravatar反代
function myself_get_avatar($avatar) {
    $avatar = str_replace(array("www.gravatar.com","0.gravatar.com","1.gravatar.com","2.gravatar.com"),"gravatar.liyang.io",$avatar);
    return $avatar;
}
add_filter( 'get_avatar', 'myself_get_avatar', 10, 3 );

curl 测试

 # curl -I 'https://gravatar.aikaiyuan.com/avatar/c5d991ee0c6fa4701b4cdd62edd15496?s=72&d=mm'
HTTP/1.1 200 OK
Server: openresty
Date: Mon, 25 Nov 2019 04:18:19 GMT
Content-Type: image/png
Content-Length: 6581
Connection: keep-alive
Last-Modified: Mon, 04 Nov 2019 07:37:47 GMT
Link: <https://www.gravatar.com/avatar/c5d991ee0c6fa4701b4cdd62edd15496?s=72&d=mm>; rel="canonical"
Content-Disposition: inline; filename="c5d991ee0c6fa4701b4cdd62edd15496.png"
Access-Control-Allow-Origin: *
X-nc: HIT bur 4
Source-Age: 1002368
Expires: Thu, 28 Nov 2019 04:18:19 GMT
Cache-Control: max-age=259200
Aikaiyuan-Cache: HIT from Cache
Strict-Transport-Security: max-age=31536000; includeSubDomains
Accept-Ranges: bytes

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