You only need to register the extensions that you want to use. Unknown
extensions will get preserved as unknown fields (at least in the C++ and
Java implementations; python does not support unknown fields), and when you
reserialize the message those will be included. The registered receivers
will
Thanks for your prompt reply!
If I understand you correctly: I provide an ExtensionRegistry to Netty's
decoder that has no entries, just to avoid the null exception. I then
reserialize the message and pass it to the appropriate handler, who decodes
it using their own ExtensionRegistry that
