Amazing text and example! It compiled just fine here, although it breaks on segfault just on main() (for both client and server). Inspected on valgrind, and looks like it’s related to internal protobuf stuff… perhaps current grpc build is bad?

[EDIT]: I finally made it work, specifically using gRPC https://github.com/grpc/grpc branch v1.22.0 commit 08fd59f039c7cf62614ab7741b3f34527af103c7

I had to completely uninstall/remove previous protobuf libraries (/usr/local/lib/libprotobuf.so.20) which were conflicting on runtime (how?) with some other libprotobuf.so.19… strange.

Thanks a lot anyway!