HTTP位置标题重写 - 从IIS代理移动逻辑到IBM datapower
问题描述:
我们正在将位置标题从IIS反向代理重写逻辑到IBM dataPower XI52 ..我知道我们有DP上的标题重写功能,但我无法理解我们可以在DP上实施下面的场景,你能指导我吗?我可以知道什么是R:1,R:2和R:3是指这里?在IIS反向代理 位置HeaderRewrite传出规则:HTTP位置标题重写 - 从IIS代理移动逻辑到IBM datapower
<rule name="Change Location Header" enabled="true">
<match serverVariable="RESPONSE_LOCATION" pattern="^http(s)?://([^/]+)/(.*)" />
<conditions logicalGrouping="MatchAny" trackAllCaptures="true">
<add input="{RESPONSE_STATUS}" pattern="^301" />
<add input="{RESPONSE_STATUS}" pattern="^302" />
</conditions>
<action type="Rewrite" value="http{R:1}://{R:2}/{R:3}" />
</rule>
我想知道我们如何才能实现对DP一样吗?
我试过使用下面的xslt,但得到空的LocationHeader_output值,我在这里做错了什么?
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:dp="http://www.datapower.com/extensions"
xmlns:re="http://exslt.org/regular-expressions"
extension-element-prefixes="dp re"
exclude-result-prefixes="dp">
<xsl:template match="*">
<xsl:choose>
<xsl:when test="dp:responding()">
<xsl:variable name="code">
<xsl:choose>
<xsl:when test="dp:http-response-header('x-dp-response-code') != ''">
<xsl:value-of select="substring(dp:http-response-header('x-dp-response-code'), 1, 3)"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="substring(dp:variable('var://service/error-headers'), 10, 3)" />
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:if test="$code = '301' or $code = '302'">
<xsl:variable name="location" select="dp:http-response-header('Location')"/>
<xsl:variable name="location_final">
<xsl:value-of select="re:replace($location, '^http(s)?://([^/]+)/(.*)', 'g', 'http{$1}://{$2}/{$3}')" />
</xsl:variable>
<dp:set-http-response-header name="'Location'" value="$location_final" />
</xsl:if>
<!-- the following prevent DataPower from overriding the response code coming back from Server-->
<dp:set-response-header name="'x-dp-response-code'" value="'-1'"/>
</xsl:when>
<xsl:otherwise/>
</xsl:choose>
</xsl:template>
答
它的DataPower
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:dp="http://www.datapower.com/extensions"
xmlns:re="http://exslt.org/regular-expressions"
extension-element-prefixes="dp re"
exclude-result-prefixes="dp">
<xsl:template match="/">
<xsl:variable name="code">
<xsl:choose>
<xsl:when test="dp:http-response-header('x-dp-response-code') != ''">
<xsl:value-of select="substring(dp:http-response-header('x-dp-response-code'), 1, 3)"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="substring(dp:variable('var://service/error-headers'), 10, 3)" />
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:message dp:priority="info">
HTTP response Code:<xsl:value-of select="$code"/>
</xsl:message>
<xsl:if test="$code = '301' or $code = '302'">
<xsl:variable name="location" select="dp:http-response-header('Location')"/>
<xsl:variable name="location_final">
<xsl:value-of select="re:replace($location, '^http(s)?://([^/]+)/(.*)', 'g', 'http$1://$2/$3')" />
</xsl:variable>
<dp:set-http-response-header name="'Location'" value="$location_final" />
<xsl:message dp:priority="info">
Response Location_beforeModify:<xsl:value-of select="$location"/>
Response Location_AfterModify:<xsl:value-of select="$location_final"/>
<!-- Response test Regex:<xsl:value-of select="re:replace('https://demo.cloudimg.io/s/width/300/sample.li/boat.jpg', '^http(s)?://([^/]+)/(.*)', 'g', 'http$1://$2/$3')" /> -->
</xsl:message>
</xsl:if>
<!-- the following prevent DataPower from overriding the response code coming back from Server-->
<dp:set-response-header name="'x-dp-response-code'" value="'-1'"/>
</xsl:template>
答
工作使用XSLT以下IBM在下面的代码片段很适合我。
<xsl:variable name="locationHeader" select="dp:http-response-header('Location')"/>
<xsl:if test="starts-with($locationHeader, 'http://') or starts-with($locationHeader, 'https://')">
<xsl:choose>
<xsl:when test="starts-with(dp:variable('var://service/URL-in'), 'https')">
<dp:set-http-response-header name="'Location'" value="concat('https://', dp:variable('var://service/local-service-address'), '/', substring-after(substring-after($locationHeader, '://'), '/'))"/>
</xsl:when>
<xsl:when test="starts-with(dp:variable('var://service/URL-in'), 'http')">
<dp:set-http-response-header name="'Location'" value="concat('http://', dp:variable('var://service/local-service-address'), '/', substring-after(substring-after($locationHeader, '://'), '/'))"/>
</xsl:when>
</xsl:choose>
</xsl:if>