Get data from gRPC cliient

[MahdiyarTH]

The context

I have a GPS device that is using protobuf.

As i know, for sending data to a server using protobuf, must be at least a service specified in .proto files, and implement that service to get data. But in the documentation and .proto files in that document (file1, file2) does not mention any service

The question

How can i get data from this device, using Java, Spring boot when there is no service in .proto files?

[ST-DDT]

Have you checked that it actually uses gRPC as service implementation? Protobuf is just the data definition and serialization format, but it can also be used without grpc.