[C++] grpc and protobuf compatibility

[Arpit Baldeva]

Hi,

Does grpc offer any guidelines around the compatibility between grpc and protobuf? Looks like recently when the 1.6 version bumped the protobuf support to 3.4.0, it started using a new php namespace option from it without putting in a version guard. This means that a prior version of protobuf can't be used with grpc 1.6 now.

Thanks. 

[Kailash Sethuraman]

Hi Arpit,

I think there might be a PHP issue here, we are looking into it, but not sure how it's related to C++? (per the subject)

Also, any clarification on this in a bug on github would be super useful too. 

Thanks!

[Arpit Baldeva]

Sorry, yeah, it is a php issue. The code generator is written in C++ and I primarily work in C++ so just ended up adding C++ in the subject line :).

Submitted a bug here (https://github.com/grpc/grpc/issues/13193) but this is already part of 1.6.0 release so I was wondering about any guidelines here. Normally, I'd want to upgrade grpc more frequently than protobuf.    

Thanks.