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https://issues.apache.org/jira/browse/FELIX-6599?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17698197#comment-17698197
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Carsten Ziegeler commented on FELIX-6599:
-----------------------------------------

Rethinking this, the best solution is actually to remove the usage of servlet 
API 4 functionality in base and only require servlet API 3

> javax.servlet incompatibility between Felix HTTP Jetty Light 4.2.8 and Jetty 
> 9.4.x
> ----------------------------------------------------------------------------------
>
>                 Key: FELIX-6599
>                 URL: https://issues.apache.org/jira/browse/FELIX-6599
>             Project: Felix
>          Issue Type: Bug
>          Components: HTTP Service
>    Affects Versions: http.jetty-4.2.8
>            Reporter: Antoine DESSAIGNE
>            Assignee: Carsten Ziegeler
>            Priority: Major
>             Fix For: http.jetty-4.2.10, http.base-4.2.6, http.bridge-4.2.8
>
>
> Hello everyone,
> We detected what looks like an inconsistency in Felix HTTP Jetty Light 4.2.8 
> (where Jetty is an external jar and not inlined).
> In the {{MANIFEST.MF}} file we can see
> {noformat}
> Import-Package:
>  javax.servlet.descriptor;version="[3.1,4)"
>  javax.servlet.http;version="[3.1,4)"
>  javax.servlet;version="[3.1,4)"
>  ...
> Require-Capability: 
> osgi.contract;filter:="(&(osgi.contract=JavaServlet)(version=4.0))",osgi.ee;filter:="(&(osgi.ee=JavaSE)(version=1.8))"
> {noformat}
> So it asks for {{javax.servlet}} in version range [3.1,4) but ask for a 4.0 
> Java Servlet capability. Unfortunately 
> {{org.apache.felix.http.base.internal.registry.PathResolverFactory}} uses 
> {{javax.servlet.http.MappingMatch}} which is only available starting in 4.0.
> Felix HTTP Jetty Light uses Jetty 9.4.50.v20221201 which requires 
> {{javax.servlet}} in version range [3.1,4).
> So it looks like in the 4.2.x branch, {{javax.servlet}} should be in 3.1.0 
> and {{javax.servlet.http.MappingMatch}} should not be used. Am I right or is 
> there something I did wrong?
> Thank you for your help



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