https://bz.apache.org/bugzilla/show_bug.cgi?id=57866
Bug ID: 57866
Summary: FlushableGZIPOutputStream only compresses first
flush()
Product: Tomcat 7
Version: 7.0.54
Hardware: PC
OS: Linux
Status: NEW
Severity: minor
Priority: P2
Component: Connectors
Assignee: [email protected]
Reporter: [email protected]
Created attachment 32695
--> https://bz.apache.org/bugzilla/attachment.cgi?id=32695&action=edit
minimum webapp exhibiting issue (change server.xml webapps path and run with
maven)
Sorry if this bug is against the wrong component. I'm not sure which component
includes Coyote filters.
I have a servlet that streams its response, and I also need it to be
compressed. Looking in wireshark and stepping through
FlushableGZIPOutputStream/GZIPOutputStream/Deflater it seems that only the data
up to the first flush is being compressed. deflateBytes seems to be called
appropriately but after the first flush() the deflated bytes seem to be a
binary header followed by uncompressed text.
My server environment uses Java 7, but I tried Java 6 in case
FlushableGZIPOutputStream interferes with Java 7's Deflater. (Both
workaround/fix JDK bugs 4255743 and 4813885.) Java 6 behaves the same as Java
7.
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