protobuf: protobuf ( Google's Protocol Buffers ) protobuf: protobuf: Protocol Buffers are a way of encoding structured data in an protobuf: efficient yet extensible format. Google uses Protocol Buffers for protobuf: almost all of its internal RPC protocols and file formats. protobuf: protobuf: Homepage: http://code.google.com/p/protobuf/ protobuf: protobuf: protobuf: protobuf: