### HttpSecureLink This module computes and checks request URLs for a required security token. This module is not compiled by default and must be specified using the 这个模块计算和检测URL请求中必须的安全标识 这个模块没有默认编译，在编译Nginx时，必须使用明确的配置参数 ~~~ --with-http_secure_link_module ~~~ argument to configure when compiling Nginx. Note that this module is only supported in nginx version 0.7.18 and higher. 来说明配置.这个模块在Nginx 0.7.18及以上版本中被支持. ### Example usage: ~~~ location /prefix/ { secure_link_secret secret_word;   if ($secure_link = "") { return 403; } } ~~~ ### 指令 **syntax:***secure_link_secret secret_word* **default:***none* **context:***location* The directive specifies a secret word to verify requests. The full URL for a protected links follows this form: 这个指令明确一个安全关键字来审核请求。完整的被保护的URL如下表： /**prefix**/*hash*/**reference** *hash* is computed as as 使用md5('参考','安全密码')函数计算 ~~~ md5 (reference, secret_word); ~~~ **prefix** is the scope of the location block, and must not be '/'. secure_link can only be used in non-root paths. 前缀是定位块的范围，绝对不能使用'/'。安全连接只能被用在非根目录路径。 ### 变量 ### $secure_link Automatically set to the reference component of the URL, isolated from the prefix and hash. If the hash is incorrect, an empty string is returned instead. 自动设置模块到URL的关联,分开前缀和HASH。如果HASH不正确，将返回空字符串。