URL 重写模块的 outboundRules 的优先级

Question

如果规则 #1 先命中，规则 #2 会被命中吗？或者它会在 IIS Url 重写模块的规则 #1 处停止。我正在尝试跳过具有特定来源的网络字体。

<outboundRules>
        <rule name="Set Access-Control-Allow-Origin header">
          <match serverVariable="RESPONSE_Access_Control_Allow_Origin" pattern=".*" />
          <conditions logicalGrouping="MatchAll" trackAllCaptures="true">
            <add input="{HTTP_ORIGIN}" pattern="(http(s)?://((.+\.)?(thestatbook\.com|localhost:3000)))" />
          </conditions>
          <action type="Rewrite" value="{C:0}" />
        </rule>
    <rule name="Enable CORS for Fonts">
          <match serverVariable="RESPONSE_Access_Control_Allow_Origin" pattern=".*" />
          <conditions>
            <add input="{REQUEST_URI}" pattern="^[^\?]+\.(ttf|otf|eot|woff|woff2|svg)(\?.*)?$" />
          </conditions>
          <action type="Rewrite" value="*" />
        </rule>
      </outboundRules>

Answer 1

Will rule #2 get hit if rule #1 does first? Or will it stop at rule #1 for IIS Url Rewrite Module.

据我所知，两个 outboundRules 都会命中。它将首先运行 "Set Access-Control-Allow-Origin header"，然后 "Enable CORS for Fonts"。您可以编写一个简单的规则并使用 postman 对其进行测试。

规则如下：

此规则将修改 Access-Control-Allow-Origin 和 Server 变量。

        <outboundRules>
      <rule name="removingserverheader" enabled="true" stopProcessing="true">
        <match serverVariable="RESPONSE_SERVER" pattern=".*" />
        <action type="Rewrite" value="0" />
      </rule>

      <rule name="Enable CORS for Fonts">
        <match serverVariable="RESPONSE_Access_Control_Allow_Origin" pattern=".*" />
        <conditions>
          <add input="{HTTP_ORIGIN}" pattern=".*" />
        </conditions>
        <action type="Rewrite" value="2" />
      </rule>
    </outboundRules>

结果：

如果您只想触发一条规则而不触发另一条规则。我建议您可以尝试使用 StopProcessing 标志。

意思是当规则动作被执行（即规则匹配）并且这个标志被打开时，意味着不再处理后续规则并将请求传递到IIS请求管道。默认情况下，此标志处于关闭状态。

规则如下：

      <rewrite>
    <outboundRules>
      <rule name="removingserverheader" enabled="true" stopProcessing="true">
        <match serverVariable="RESPONSE_SERVER" pattern=".*" />
        <action type="Rewrite" value="0" />
      </rule>
      <rule name="Enable CORS for Fonts" enabled="true">
        <match serverVariable="RESPONSE_Access_Control_Allow_Origin" pattern=".*" />
        <conditions>
          <add input="{HTTP_ORIGIN}" pattern=".*" />
        </conditions>
        <action type="Rewrite" value="2" />
      </rule>
  </outboundRules>
  </rewrite>

结果：

URL 重写模块的 outboundRules 的优先级

Priority for outboundRules for URL rewrite module

iis

url-rewriting

cors

url-rewrite-module