diff --git a/tools/relay/go.mod b/tools/relay/go.mod
index 8a379ae2a..a7f28292a 100644
--- a/tools/relay/go.mod
+++ b/tools/relay/go.mod
@@ -6,7 +6,7 @@ replace github.com/vhive-serverless/vSwarm/utils/tracing/go => ../../utils/traci
 
 require (
 	github.com/sirupsen/logrus v1.9.3
-	github.com/vhive-serverless/vSwarm-proto v0.4.3-0.20231030051952-95c2986277cc
+	github.com/vhive-serverless/vSwarm-proto v0.5.0
 	github.com/vhive-serverless/vSwarm/utils/tracing/go v0.0.0-20230802102142-dbfda39fc27c
 	google.golang.org/grpc v1.60.1
 )
diff --git a/tools/relay/go.sum b/tools/relay/go.sum
index 561a398a1..1d5d208ab 100644
--- a/tools/relay/go.sum
+++ b/tools/relay/go.sum
@@ -30,8 +30,8 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
-github.com/vhive-serverless/vSwarm-proto v0.4.3-0.20231030051952-95c2986277cc h1:jzG4kdqtKGvAIuIvAa1aBGsbceeDEfL/w0wn7E0gO6E=
-github.com/vhive-serverless/vSwarm-proto v0.4.3-0.20231030051952-95c2986277cc/go.mod h1:SwR0sLup2AAxyjm81H8OPr+jd2D7gNBZSMTGJZaedWw=
+github.com/vhive-serverless/vSwarm-proto v0.5.0 h1:EWPD0xTs1XkBerTQVsQ9sFJSOyCUKOu7Y3L9AftuLow=
+github.com/vhive-serverless/vSwarm-proto v0.5.0/go.mod h1:bUm7QUFkBnFNVhbG7PHWRNT5tXRFXR9WEkfIGE82o+0=
 go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.46.1 h1:SpGay3w+nEwMpfVnbqOLH5gY52/foP8RE8UzTZ1pdSE=
 go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.46.1/go.mod h1:4UoMYEZOC0yN/sPGH76KPkkU7zgiEWYWL9vwmbnTJPE=
 go.opentelemetry.io/otel v1.21.0 h1:hzLeKBZEL7Okw2mGzZ0cc4k/A7Fta0uoPgaJCr8fsFc=
diff --git a/tools/relay/server.go b/tools/relay/server.go
index 6bda89ab4..9e7f331ad 100644
--- a/tools/relay/server.go
+++ b/tools/relay/server.go
@@ -60,6 +60,7 @@ var (
 	generatorString = flag.String("generator", "unique", "Generator type (unique / linear / random)")
 	value           = flag.String("value", "helloWorld", "String input to pass to benchmark")
 	functionMethod  = flag.String("function-method", "default", "Which method of benchmark to invoke")
+	verbose         = flag.Bool("verbose", false, "Enable verbose log printing")
 
 	// Client
 	grpcClient     grpcClients.GrpcClient
@@ -67,14 +68,16 @@ var (
 )
 
 func isDebuggingEnabled() bool {
+	debugging := false
 	if val, ok := os.LookupEnv("ENABLE_DEBUGGING"); !ok || val == "false" {
-		return false
+		debugging = false
 	} else if val == "true" {
-		return true
+		debugging = true
 	} else {
 		log.Fatalf("ENABLE_DEBUGGING has unexpected value: `%s`", val)
 		return false
 	}
+	return debugging || *verbose
 }
 
 func main() {
@@ -99,7 +102,9 @@ func main() {
 	serviceName := grpcClients.FindServiceName(*functionName)
 	grpcClient = grpcClients.FindGrpcClient(serviceName)
 	ctx := context.Background()
-	grpcClient.Init(ctx, *functionEndpointURL, *functionEndpointPort)
+	if err := grpcClient.Init(ctx, *functionEndpointURL, *functionEndpointPort); err != nil {
+		log.Fatalf("Fail to init client: %s", err)
+	}
 	defer grpcClient.Close()
 
 	// Configure the Input generator
@@ -146,13 +151,12 @@ func main() {
 }
 
 func (s *server) SayHello(ctx context.Context, in *pb.HelloRequest) (*pb.HelloReply, error) {
-	log.Info("Received from invoker: ", in.GetName())
 
 	// Create new packet
 	pkt := inputGenerator.Next()
-	log.Debug("Send to func: ", pkt)
-	reply := grpcClient.Request(ctx, pkt)
-	log.Debug("Recv from func: ", reply)
+	log.Debugf("Send to func: %s\n", pkt)
+	reply, err := grpcClient.Request(ctx, pkt)
+	log.Debugf("Recv from func: %s\n", reply)
 
-	return &pb.HelloReply{Message: reply}, nil
+	return &pb.HelloReply{Message: reply}, err
 }