239371abaf
Related issue: #2821 Motivation: There's no way for a user to change the default ZlibEncoder implementation. It is already possible to change the default ZlibDecoder implementation. Modification: Add a new system property 'io.netty.noJdkZlibEncoder'. Result: A user can disable JDK ZlibEncoder, just like he or she can disable JDK ZlibDecoder.