「Nginx」- http rewrite module

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# if

「Module ngx_http_rewrite_module/if」
「If Is Evil」 

# 判断用户使用IE浏览器
if ($http_user_agent ~ MSIE) {
    rewrite ^(.*)$ /msie/$1 break;
}

# 判断referer是否合法
# 参考valid_referers指令
if ($invalid_referer) {
    return 403;
}

参考文献

Module ngx_http_rewrite_module
Modify $request_uri in Nginx
Nginx reverse proxy + URL rewrite
Nginx proxy_pass root and specific url only
how to reverse proxy via nginx a specific url?
How to preserve request url with nginx proxy_pass
NGINX proxy_pass with URI modification