; how to use proto buf & simple rpc
; how to use gRpc (simple rpc, server-to-client stream rpc, client-to-server rpc, bidirectional streaming)
; how to use gRpc with TLS (no mutual auth, mutual auth)
compile
$ mvn clean compile
// then see target/demo/{routeguid | sample1 | tls}/proto/*.classchange running enum
// SampleRunner runner = SampleRunner.SAMPLE1;
// SampleRunner runner = SampleRunner.ROUTE_GUIDE;
SampleRunner runner = SampleRunner.TLS;running main method in DemoApplication
