Close gprcClient defined by service in the .proto file.

[bradyjoestar]

Please answer these questions before submitting your issue.

What version of gRPC are you using?

grpc-go

What version of Go are you using (go version)?

1.10

What operating system (Linux, Windows, …) and version?

ubuntu

What did you do?

In the grpc-go/examples/helloworld/helloworld/helloworld.pb.go,It define a

// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
type GreeterClient interface {
	// Sends a greeting
	SayHello(ctx context.Context, in *HelloRequest, opts ...grpc.CallOption) (*HelloReply, error)
}

type greeterClient struct {
	cc *grpc.ClientConn
}

How should I close a GreenClient connect? its not a net.Conn and greeterClient doesn't expose a Close().

[lyuxuan]

GreeterClient is the stub(interface) for RPC calls. greeterClient is the proto generated implementation of GreeterClient interface, and greeterClient takes a ClientConn to be initialized (here). Therefore, to close the connection, you simply close the ClientConn you initialize greeterClient with (like here). greeterClient itself is not a connection, therefore cannot be closed. It only keeps a reference to a connection(i.e. ClientConn). Thanks!

[bradyjoestar]

@lyuxuan Thanks for help! Appreciate it!