Unlock 30% off on Manual Testing Annual Plans this Holiday Season.

Copied to Clipboard!

How to use Connect method of grpc Package

Best K6 code snippet using grpc.Connect

bidi.go

Source:bidi.go

...15	Addr      string16	TLS       bool // whether or not to use TLS for the underlying channel17	TLSConfig *tls.Config18}19// Connect to the server and establish a yamux channel for bidi grpc.20func Connect(ctx context.Context, dialOpts *DialOpts, grpcServer *grpc.Server) *grpc.ClientConn {21	yDialer := NewYamuxDialer()22	go func() {23		// start connect loop to maintain server connection over the yamux channel24		connectOp := func() error {25			return connect(dialOpts, grpcServer, yDialer)26		}27		for {28			// retry will keep trying to connect to the server forever (or until context is done/canceled)29			// after a successful connection, however, retry will return nil when the connection is closed30			// so wrap in a loop here to reconnect and try again so we can maintain the connection31			retry(ctx, connectOp, 5*time.Second, 0)32			// check if we should give up due to canceled ctx33			select {34			case <-ctx.Done():...

main.go

Source:main.go

...36		return37	}38}39func callServiceOneDirect(url string) error {40	// Connect to server41	grpcConn, err := grpc.Dial(url, grpc.WithInsecure(), grpc.WithBlock())42	if err != nil {43		return errors.Wrap(err, "Can't connect to service #1 by direct port")44	}45	defer grpcConn.Close()46	// Create client47	grpcClient := proto_one.NewServiceClient(grpcConn)48	// Do request for data49	resp, err := grpcClient.GetSomeResponse(context.Background(), &proto_one.NoArguments{})50	if err != nil {51		fmt.Println(err)52		return errors.Wrap(err, "Can't execute procedure on service #1 by direct port")53	}54	if resp == nil {55		return fmt.Errorf("Response is nil from service #1")56	}57	fmt.Println("Response from service #1 is:", resp)58	return nil59}60func callServiceTwoDirect(url string) error {61	// Connect to server62	grpcConn, err := grpc.Dial(url, grpc.WithInsecure(), grpc.WithBlock())63	if err != nil {64		return errors.Wrap(err, "Can't connect to service #2 by direct port")65	}66	defer grpcConn.Close()67	// Create client68	grpcClient := proto_two.NewServiceClient(grpcConn)69	// Do request for data70	resp, err := grpcClient.GetSomeResponse(context.Background(), &proto_two.NoArguments{})71	if err != nil {72		fmt.Println(err)73		return errors.Wrap(err, "Can't execute procedure on service #2 by direct port")74	}75	if resp == nil {76		return fmt.Errorf("Response is nil from service #2")77	}78	fmt.Println("Response from service #2 is:", resp)79	return nil80}81func callServiceOneProxy(url string) error {82	// Connect to server83	grpcConn, err := grpc.Dial(url, grpc.WithInsecure(), grpc.WithBlock())84	if err != nil {85		return errors.Wrap(err, "Can't connect to service #1 by reverse proxy port")86	}87	defer grpcConn.Close()88	// Create client89	grpcClient := proto_one.NewServiceClient(grpcConn)90	// Do request for data91	resp, err := grpcClient.GetSomeResponse(context.Background(), &proto_one.NoArguments{})92	if err != nil {93		fmt.Println(err)94		return errors.Wrap(err, "Can't execute procedure on service #1 by reverse proxy port")95	}96	if resp == nil {97		return fmt.Errorf("Response is nil from service #1 (reverse proxy)")98	}99	fmt.Println("Response from service #1 (reverse proxy) is:", resp)100	return nil101}102func callServiceTwoProxy(url string) error {103	// Connect to server104	grpcConn, err := grpc.Dial(url, grpc.WithInsecure(), grpc.WithBlock())105	if err != nil {106		return errors.Wrap(err, "Can't connect to service #2 by reverse proxy port")107	}108	defer grpcConn.Close()109	// Create client110	grpcClient := proto_two.NewServiceClient(grpcConn)111	// Do request for data112	resp, err := grpcClient.GetSomeResponse(context.Background(), &proto_two.NoArguments{})113	if err != nil {114		fmt.Println(err)115		return errors.Wrap(err, "Can't execute procedure on service #2 by reverse proxy port")116	}117	if resp == nil {...

grpc.go

Source:grpc.go

...6	"time"7	"google.golang.org/grpc"8)9const (10	// numConnectRetries is the number of times we try to connect a gRPC client11	// to the server when ensuring the server has come up before we give up.12	numConnectRetries = 1013	// delayBetweenConnectRetries is how long we wait between each connection14	// attempt when verifying that the server is up.15	delayBetweenConnectRetries = (100 * time.Millisecond)16)17// startGRPC takes care of starting the gRPC server.  Note that this has to happen18// before you call startHTTP if you are using RESTMuxViaGRPC since it depends on19// the gRPC server being up before it can start safely.20func (s *Server) startGRPC() error {21	listener, err := net.Listen("tcp", s.grpcListenAddr)22	if err != nil {23		return err24	}25	grpcServer := s.service.GRPCServer()26	// Set up graceful shutdown27	go func() {28		<-s.ctx.Done()29		grpcServer.GracefulStop()30	}()31	// Start gRPC server32	go func() {33		log.Printf("starting gRPC interface '%s'", s.grpcListenAddr)34		err := grpcServer.Serve(listener)35		if err != nil {36			log.Printf("gRPC interface '%s' down, %v", s.grpcListenAddr, err)37		} else {38			log.Printf("gRPC interface '%s' down", s.grpcListenAddr)39		}40		s.grpcStopped.Done()41	}()42	// Ensure the gRPC server is really up before we return43	connectSuccess := false44	for i := 0; i < numConnectRetries; i++ {45		client, err := grpc.Dial(s.grpcListenAddr, grpc.WithInsecure())46		if err == nil {47			connectSuccess = true48			client.Close()49			break50		}51		log.Printf("waiting for gRPC endpoint '%s' to come up (attempt %d)", s.grpcListenAddr, i+1)52		time.Sleep(delayBetweenConnectRetries)53	}54	if !connectSuccess {55		return fmt.Errorf("failed to connect to gRPC endpoint %s to check for liveness", s.grpcListenAddr)56	}57	s.grpcStarted.Done()58	return nil59}...

Connect

Using AI Code Generation

1conn, err := grpc.Dial("localhost:50051", grpc.WithInsecure())2if err != nil {3log.Fatalf("did not connect: %v", err)4}5defer conn.Close()6c := pb.NewGreeterClient(conn)7r, err := c.SayHello(context.Background(), &pb.HelloRequest{Name: "world"})8if err != nil {9log.Fatalf("could not greet: %v", err)10}11log.Printf("Greeting: %s", r.Message)12conn, err := grpc.Dial("localhost:50051", grpc.WithInsecure())13if err != nil {14log.Fatalf("did not connect: %v", err)15}16defer conn.Close()17c := pb.NewGreeterClient(conn)18r, err := c.SayHello(context.Background(), &pb.HelloRequest{Name: "world"})19if err != nil {20log.Fatalf("could not greet: %v", err)21}22log.Printf("Greeting: %s", r.Message)

Connect

Using AI Code Generation

1conn, err := grpc.Dial("localhost:50051", grpc.WithInsecure())2if err != nil {3log.Fatalf("did not connect: %v", err)4}5defer conn.Close()6c := pb.NewGreeterClient(conn)7r, err := c.SayHello(context.Background(), &pb.HelloRequest{Name: name})8if err != nil {9log.Fatalf("could not greet: %v", err)10}11log.Printf("Greeting: %s", r.Message)12}13import grpc14import helloworld_pb215import helloworld_pb2_grpc16def run():17channel = grpc.insecure_channel('localhost:50051')18stub = helloworld_pb2_grpc.GreeterStub(channel)19response = stub.SayHello(helloworld_pb2.HelloRequest(name='you'))20print("Greeter client received: " + response.message)21run()22var PROTO_PATH = __dirname + '/helloworld.proto';23var grpc = require('grpc');24var hello_proto = grpc.load(PROTO_PATH).helloworld;25function main() {26var client = new hello_proto.Greeter('localhost:50051',27grpc.credentials.createInsecure());28client.sayHello({name: 'you'}, function(err, response) {29console.log('Greeting:', response.message);30});31}32main();33using System;34using Grpc.Core;35using Helloworld;36{37{38public static void Main(string[] args)39{

Connect

Using AI Code Generation

1conn, err := grpc.Dial("localhost:50051", grpc.WithInsecure())2if err != nil {3	log.Fatalf("could not connect: %v", err)4}5defer conn.Close()6c := pb.NewGreeterClient(conn)7r, err := c.SayHello(context.Background(), &pb.HelloRequest{Name: name})8if err != nil {9	log.Fatalf("could not greet: %v", err)10}11log.Printf("Greeting: %s", r.Message)12conn, err := grpc.Dial("localhost:50051", grpc.WithInsecure())13if err != nil {14	log.Fatalf("could not connect: %v", err)15}16defer conn.Close()17c := pb.NewGreeterClient(conn)18r, err := c.SayHello(context.Background(), &pb.HelloRequest{Name: name})19if err != nil {20	log.Fatalf("could not greet: %v", err)21}22log.Printf("Greeting: %s", r.Message)

Connect

Using AI Code Generation

1import (2func main() {3	fmt.Println("Hello World")4	conn, err := grpc.Dial("localhost:50051", grpc.WithInsecure())5	if err != nil {6		log.Fatalf("Could not connect: %v", err)7	}8	defer conn.Close()9}10import (11func main() {12	fmt.Println("Hello World")13	conn, err := grpc.Dial("localhost:50051", grpc.WithInsecure())14	if err != nil {15		log.Fatalf("Could not connect: %v", err)16	}17	defer conn.Close()18	c := greetpb.NewGreetServiceClient(conn)19	doUnary(c)20}21func doUnary(c greetpb.GreetServiceClient) {22	fmt.Println("Starting to do a Unary RPC...")23	req := &greetpb.GreetRequest{24		Greeting: &greetpb.Greeting{25		},26	}27	res, err := c.Greet(context.Background(), req)28	if err != nil {29		log.Fatalf("error while calling Greet RPC: %v", err)30	}31	log.Printf("Response from Greet: %v", res.Result)32}33import (34func main() {35	fmt.Println("Hello World")36	conn, err := grpc.Dial("localhost:50051", grpc.WithInsecure())37	if err != nil {38		log.Fatalf("Could not connect: %v", err)39	}40	defer conn.Close()41	c := greetpb.NewGreetServiceClient(conn)42	doServerStreaming(c)43}44func doServerStreaming(c greetpb.GreetServiceClient) {45	fmt.Println("Starting to do a Server Streaming RPC...")46	req := &greetpb.GreetManyTimesRequest{47		Greeting: &greetpb.Greeting{

Connect

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello World")4    conn, err := grpc.Connect()5    serr.Check(err, "Error connecting to gRPC server", serr.FatalError())6    client := greeter.NewClient(conn)7    client.SayHello()8}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.