call ping

client/cmd/main.go

@@ -1,14 +1,60 @@
 package main
 
 import (
+	"context"
+	"errors"
+	"flag"
 	"fmt"
 	"log"
+	"time"
+
+	"github.com/vilmibm/hermeticum/proto"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+)
+
+var (
+	tls                = flag.Bool("tls", false, "Connection uses TLS if true, else plain TCP")
+	caFile             = flag.String("ca_file", "", "The file containing the CA root cert file")
+	serverAddr         = flag.String("addr", "localhost:6666", "The server address in the format of host:port")
+	serverHostOverride = flag.String("server_host_override", "x.test.example.com", "The server name used to verify the hostname returned by the TLS handshake")
 )
 
 func _main() error {
-	fmt.Println("lol TODO make a client")
+	var opts []grpc.DialOption
+	if *tls {
+		return errors.New("TODO tls unsupported")
+		/*
+			if *caFile == "" {
+				*caFile = data.Path("x509/ca_cert.pem")
+			}
+			creds, err := credentials.NewClientTLSFromFile(*caFile, *serverHostOverride)
+			if err != nil {
+				log.Fatalf("Failed to create TLS credentials %v", err)
+			}
+			opts = append(opts, grpc.WithTransportCredentials(creds))
+		*/
+	} else {
+		opts = append(opts, grpc.WithTransportCredentials(insecure.NewCredentials()))
+	}
 
-	// TODO do a ping against server
+	conn, err := grpc.Dial(*serverAddr, opts...)
+	if err != nil {
+		return fmt.Errorf("fail to dial: %w", err)
+	}
+	defer conn.Close()
+
+	client := proto.NewGameWorldClient(conn)
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
+	defer cancel()
+
+	pong, err := client.Ping(ctx, &proto.SessionInfo{})
+	if err != nil {
+		log.Fatalf("%v.Ping -> %v", client, err)
+	}
+
+	log.Printf("%#v", pong)
 
 	return nil
 }

server/cmd/main.go

@@ -6,7 +6,6 @@ import (
 	"fmt"
 	"log"
 	"net"
-	"os"
 
 	"github.com/vilmibm/hermeticum/proto"
 	"google.golang.org/grpc"
@@ -80,7 +79,5 @@ func main() {
 	err := _main()
 	if err != nil {
 		log.Fatal(err.Error())
-		fmt.Fprintln(os.Stderr, err.Error())
-		os.Exit(1)
 	}
 }