Client boilerplate
Let us now write the client boilerplate. This will be very similar to writing the server boilerplate but instead of creating a listener on an IP and port, we are going to call the grpc.Dial function and pass the connection options to it.
Once again, we are not going to hardcode the address we are going to connect to. We are going to take that as a parameter:
args := os.Args[1:]
if len(args) == 0 {
log.Fatalln("usage: client [IP_ADDR]")
}
addr := args[0]
After that, we are going to create an instance of DialOption, and to keep this boilerplate generic, we are going to make an insecure connection to the server with the insecure.NewCredentials() function. Do not worry though; we will discuss how to make secure connections later:
opts := []grpc.DialOption{
grpc.WithTransportCredentials(insecure.NewCredentials()),
}
Finally, we can just call for the grpc.Dial function to create a grpc.ClientConn object. This is the object that we...