https://bz.apache.org/bugzilla/show_bug.cgi?id=66511

            Bug ID: 66511
           Summary: GZipOutputFilter overwrites chunk instead of reading
                    it
           Product: Tomcat 10
           Version: 10.1.7
          Hardware: PC
                OS: Mac OS X 10.1
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Connectors
          Assignee: dev@tomcat.apache.org
          Reporter: pouts...@vmware.com
  Target Milestone: ------

In GzipOutputFilter::doWrite, if the given ByteBuffer is not backed by an
array, it gets overwritten with empty data. 

See
https://github.com/apache/tomcat/blob/main/java/org/apache/coyote/http11/filters/GzipOutputFilter.java#L73

Suggested solution:

Replace ByteBuffer::put with ByteBuffer::get.

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