Consider changing marshal default to not length prefix

[ebuchman]

Currently we have eg. MarshalBinary and MarshalBinaryBare where the former includes a length prefix and the later does not. It seems more natural to switch the default behaviour to not be length prefixed (afaik proto3 does not auto-include a length prefix), and to have MarshalBinaryLengthPrefix instead of MarshalBinaryBare

[liamsi]

I agree, this should be the default behaviour. And you are right, that proto3 doesn't encode the length by default. Length delimiting is used for streaming AFAIK. I think some implementations do not even provide length delimited encoding / decoding. Most do though (java, prost/rust).

I think we should change this pre-launch as this would be breaking. Do you agree?

[ebuchman]

Yes I do! Should get confirmation from @jaekwon too though

[jaekwon]

yes :)

[liamsi]

First step (rename MarshalBinary) was addressed in #222. Will update depending projects to use the new API. After that we could either rename MarshalBinaryBare to MarshalBinary, or, we could keep the Bare postfix.