IIS Reverse Proxy HTTP 502 Gateway - SVN(Subversion)

* IIS에서 Visual SVN Server로 Reverse Proxy 설정시 특정 HTTP 동사(COPY, MOVE)에서 HTTP 502 Gateway 관련 내용 발생

* HTTP_DESTINATION 서버 변수 등록 및 사용 관련 내용 참조

* 샘플용 web.config  (인바운드만 참조)

* 외부 접속 주소 (샘플) : svn.test.com

* 내부 Visual SVN Server 접속 주소 : 127.0.0.1:8080

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <rewrite>
            <outboundRules>
                <rule name="ReverseProxyOutboundRule1" preCondition="ResponseIsHtml1">
                    <match filterByTags="A, Form, Img" pattern="http://127.0.0.1:8080/(.*)" />
                    <action type="Rewrite" value="https://svn.test.com/{R:1}" />
                </rule>
                <preConditions>
                    <preCondition name="ResponseIsHtml1">
                        <add input="{RESPONSE_CONTENT_TYPE}" pattern="^text/html" />
                    </preCondition>
                </preConditions>
            </outboundRules>
            <rules>
                <rule name="To https" stopProcessing="true">
                    <match url="(.*)" />
                    <conditions logicalGrouping="MatchAll" trackAllCaptures="false">
                        <add input="{HTTPS}" pattern="^OFF$" />
                    </conditions>
                    <action type="Redirect" url="https://{HTTP_HOST}{REQUEST_URI}" />
                </rule>
                <rule name="ReverseProxyInboundRule1" stopProcessing="true">
                    <match url="(.*)" />
                    <conditions logicalGrouping="MatchAll" trackAllCaptures="false">
                        <add input="{HTTP_DESTINATION}" pattern="https://(.*)" />
                    </conditions>
                 <serverVariables> 
                        <set name="HTTP_DESTINATION" value="http://{C:1}" />
                </serverVariables>
                    <action type="Rewrite" url="http://127.0.0.1:8080/{R:1}" />
                </rule>
                <rule name="ProxyRest" patternSyntax="ECMAScript" stopProcessing="true">
                    <match url="(.*)" negate="false" />
                    <conditions logicalGrouping="MatchAll" trackAllCaptures="false" />
                    <action type="Rewrite" url="http://127.0.0.1:8080/{R:1}" logRewrittenUrl="true" />
                </rule>
            </rules>
        </rewrite>
        <urlCompression doStaticCompression="false" doDynamicCompression="false" />

  <security>
    <requestFiltering allowDoubleEscaping="true">
                <requestLimits maxAllowedContentLength="2147483648" maxUrl="2147483648" maxQueryString="2147483648" />
      <fileExtensions allowUnlisted="true" applyToWebDAV="true">
        <clear />
      </fileExtensions>
      <verbs allowUnlisted="true" applyToWebDAV="true">
        <clear />
      </verbs>
      <hiddenSegments applyToWebDAV="true">
        <clear />
      </hiddenSegments>
    </requestFiltering>
  </security> 
    </system.webServer>
</configuration>