IIS 10单域名访问时URL重定向失败问题求助
问题描述
我管理matiasmasso.es和matiasmasso.pt两个域名,在Web.Config中配置了重定向规则,大部分URL都能正常生效,但存在以下例外情况:
- 访问
http://www.matiasmasso.pt(无SSL触发规则)时,会错误重定向至https://www.matiasmasso.es; - 访问带路径的URL如
http://www.matiasmasso.pt/test时,能成功跳转至https://www.matiasmasso.pt/test。
当前使用的重定向规则代码如下:
<rewrite> <rules> <rule name="RedirectToHTTPS" stopProcessing="true"> <match url="(.*)" /> <conditions> <add input="{HTTPS}" pattern="off" ignoreCase="true" /> </conditions> <action type="Redirect" url="https://{SERVER_NAME}/{R:1}" redirectType="Permanent" /> </rule> <rule name="RedirectNonWwwEsToWww" stopProcessing="true"> <match url="(.*)" /> <conditions> <add input="{HTTP_HOST}" pattern="^matiasmasso.es$" ignoreCase="true"/> </conditions> <action type="Redirect" url="http://www.matiasmasso.es/{R:0}" redirectType="Permanent" /> </rule> <rule name="RedirectNonWwwPtToWww" stopProcessing="true"> <match url="(.*)" /> <conditions> <add input="{HTTP_HOST}" pattern="^matiasmasso.pt$" ignoreCase="true"/> </conditions> <action type="Redirect" url="http://www.matiasmasso.pt/{R:0}" redirectType="Permanent" /> </rule> </rules> </rewrite>
解决建议
问题根源在于RedirectToHTTPS规则中使用的{SERVER_NAME}变量。当访问根路径http://www.matiasmasso.pt时,IIS的SERVER_NAME可能被站点绑定的默认域名覆盖为matiasmasso.es,导致重定向目标错误;而带路径的请求因为{R:1}存在值,服务器处理时SERVER_NAME能正确匹配当前访问的域名,所以跳转正常。
核心修复步骤
将RedirectToHTTPS规则里的{SERVER_NAME}替换为{HTTP_HOST},{HTTP_HOST}会直接读取请求的主机头信息,能准确对应当前访问的域名:
<rule name="RedirectToHTTPS" stopProcessing="true"> <match url="(.*)" /> <conditions> <add input="{HTTPS}" pattern="off" ignoreCase="true" /> </conditions> <action type="Redirect" url="https://{HTTP_HOST}/{R:1}" redirectType="Permanent" /> </rule>
优化建议
当前的非www转www规则跳转目标是HTTP协议,之后会被HTTPS规则再次重定向,增加了一次跳转请求。建议直接将这两个规则的跳转目标改为HTTPS,提升用户体验:
<rule name="RedirectNonWwwEsToWww" stopProcessing="true"> <match url="(.*)" /> <conditions> <add input="{HTTP_HOST}" pattern="^matiasmasso.es$" ignoreCase="true"/> </conditions> <action type="Redirect" url="https://www.matiasmasso.es/{R:0}" redirectType="Permanent" /> </rule> <rule name="RedirectNonWwwPtToWww" stopProcessing="true"> <match url="(.*)" /> <conditions> <add input="{HTTP_HOST}" pattern="^matiasmasso.pt$" ignoreCase="true"/> </conditions> <action type="Redirect" url="https://www.matiasmasso.pt/{R:0}" redirectType="Permanent" /> </rule>
内容的提问来源于stack exchange,提问作者Matias Masso
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