How can I get the client IP address and user-agent in Golang gRPC?

Question

I set up a series of gRPC requests and responses which all work fine, but I'm stuck when I try to get the client IP address and user-agent who is calling my gRPC APIs.

I read the Go gRPC documentation and other sources, but didn't find much valuable information. Few of them are talking about gRPC in Golang.

Should I set up a key-value to store the IP address in the context when setting up the gRPC APIs?

Answer 1

In Golang GRPC, you can use

func (UserServicesServer) Login(ctx context.Context, request *sso.LoginRequest) (*sso.LoginResponse, error) {
  p, _ := peer.FromContext(ctx)
  request.Frontendip = p.Addr.String()
  .
  .
}

But, do not forget import "google.golang.org/grpc/peer"