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  • Amazon Corretto 11 for Linux

  • Amazon Corretto 11 for Windows

  • Amazon Corretto 17 for Linux (IdP versions prior to 4.2 require installation of a JavaScript plugin)

  • Amazon Corretto 17 for Windows (IdP versions prior to 4.2 require installation of a JavaScript plugin)

  • Red Hat's OpenJDK 11 for Linux as supplied under Red Hat Enterprise Linux and CentOS 7 and 8

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Other Java distributions that are substantially identical or meant to be fully compatible with OpenJDK 11 are of course likely to work, but are officially regarded as unsupported to limit the range of environments we need to be able to reproduce problems under to a manageable set.

Note

Java 17 Note

Use of Java 17 or above require the use of V4.2+ of the IdP. Additionally, note that use of Javascript in your own configurations requires the installation of a Javascript engine plugin due to the removal of Javascript from Java itself.

Other platform/version requirements

  • A servlet container implementing Servlet API 3.1 is required, but Servlet API 5.0 (or greater) are NOT supported. For example:

    • Jetty 9.4 or later , 10, 12 (but not Jetty 11)

    • Tomcat 9 or later (but not 10.x) (while some older versions of Tomcat are nominally suitable, they have not been tested and have been obsoleted in any case)

  • We also do not officially support any "packaged" containers provided by OS vendors. We do not test on these containers so we cannot assess what changes may have been made by the packaging process, and they frequently contain unwarranted and ill-considered changes from the upstream software.

  • The recommended container implementation is Jetty and all development and most testing time by the core project team is confined to the Jetty platform. At present, Jetty 9.4 is 10 or 12+ are recommended.

  • There are no specific requirements regarding Operating Systems, but in practice this is inherently limited by the Java distributions supported, as noted above.

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  • Java version 10 or earlierTomcat

  • 7 Jetty 9.3 or earlier

  • Jetty 9.3 or earlierJetty 11 or later11 (11 is part of a “new” API stream supporting the incompatible new Jakarta EE specification, which will be supported and in fact required by IdP V5.0 when it is available). Jetty 10 is the equivalent to 11 while maintaining support for the old Java EE API. Jetty 12 supports both APIs.

  • Tomcat 7 or earlier

  • Tomcat 10.x (per the Jetty 11 comment above, this is the Tomcat branch supporting only Jakarta EE)

User Agent Assumptions

There are no specific requirements regarding Browsers, but we test on only relatively recent, mainstream software, and certain features like HTML Local Storage assume standards-compliant software.

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