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<td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://issues.shibboleth.net/jira/browse/SSPCPP" style="color: #3b73af; text-decoration: none">Shibboleth SP - C++</a> / <a href="https://issues.shibboleth.net/jira/browse/SSPCPP-938" style="color: #3b73af; text-decoration: none"><img src="cid:jira-generated-image-avatar-694649d2-590f-4762-97b9-bffea13df205" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"></a> <a href="https://issues.shibboleth.net/jira/browse/SSPCPP-938" style="color: #3b73af; text-decoration: none">SSPCPP-938</a> </td>
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<td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://issues.shibboleth.net/jira/browse/SSPCPP-938" style="color: #3b73af; text-decoration: none">IIS Module not setting Cache-Control</a> </span> </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Issue Type:</th>
<td class="has-icon" style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-avatar-694649d2-590f-4762-97b9-bffea13df205" height="16" width="16" border="0" align="absmiddle" alt="Bug" style="vertical-align: text-bottom"> Bug </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Affects Versions:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 3.2.3 </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Assignee:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="cantor.2@osu.edu" id="email_cantor.2@osu.edu" href="https://issues.shibboleth.net/jira/secure/ViewProfile.jspa?name=cantor.2%40osu.edu" style="color:#0052cc;; color: #3b73af; text-decoration: none">Scott Cantor</a> </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Components:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> Request Processing </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Created:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 15/Jul/21 10:40 PM </td>
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<td class="has-icon" style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="cid:jira-generated-image-static-minor-bcc20b42-0b0d-4e97-b6c9-9b6642d6dbc7" height="16" width="16" border="0" align="absmiddle" alt="Minor" style="vertical-align: text-bottom"> Minor </td>
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<th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0">Reporter:</th>
<td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="33ee0d3bbb4cdd8aad53b33f204a0231e54261e38956095f227ee4384944457a@https://login.idp.eduid.se/idp.xml" id="email_33ee0d3bbb4cdd8aad53b33f204a0231e54261e38956095f227ee4384944457a@https://login.idp.eduid.se/idp.xml" href="https://issues.shibboleth.net/jira/secure/ViewProfile.jspa?name=33ee0d3bbb4cdd8aad53b33f204a0231e54261e38956095f227ee4384944457a%40https%3A%2F%2Flogin.idp.eduid.se%2Fidp.xml" style="color:#0052cc;; color: #3b73af; text-decoration: none">33ee0d3bbb4cdd8aad53b33f204a0231e54261e38956095f227ee4384944457a@https://login.idp.eduid.se/idp.xml</a> </td>
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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0; margin-top: 0">A client switched from using the now-unsupported ISAPI filter to the IIS module. This immediately resulted in AuthnRequests being replayed by clients, with one affected IdP blaming the lack of a cache-control: no-cache flag.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The Apache module and the ISAPI filter both set the cache-control header to: private,no-store,no-cache,max-age=0.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">We ran full Request Tracing on the IIS server using both the filter and the module. With the filter, we can clearly see cache-control being set. With the module, we never see an attempt to set it at all. The below is from a request trace with the filter enabled.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">GENERAL_SET_RESPONSE_HEADER </p> {D42CF7EF-DE92-473E-8B6C-621EA663113A} <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0"> 0 1 4 56 0x0 redacted-WIN10 </p> {80000003-0007-F800-B63F-84710C7967BB} <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0"> Cache-Control private,no-store,no-cache,max-age=0 false</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">There is no other module or part of the IIS server that is visibly interfering with the outbound response. Full request traces available upon request if needed.</p> </td>
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