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Update gRPC example #2191

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merged 4 commits into from Oct 2, 2017
Merged

Update gRPC example #2191

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4e0b0d5
Modification of greeter_server, Modification of greeter_client
jsenon Sep 30, 2017
958e230
Modification of greeter_server, Modification of greeter_client
jsenon Sep 30, 2017
c885faa
Modification of greeter_server
jsenon Sep 30, 2017
a88795e
Remove import block
jsenon Sep 30, 2017
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22 changes: 11 additions & 11 deletions docs/user-guide/grpc.md
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Expand Up @@ -14,7 +14,7 @@ This section explains how to use Traefik as reverse proxy for gRPC application w
In order to secure the gRPC server, we generate a self-signed certificate for backend url:

```bash
openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout ./backend.key -out ./backend.crt
openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout ./backend.key -out ./backend.cert
```

That will prompt for information, the important answer is:
Expand All @@ -28,7 +28,7 @@ Common Name (e.g. server FQDN or YOUR name) []: backend.local
Generate your self-signed certificate for frontend url:

```bash
openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout ./frontend.key -out ./frontend.crt
openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout ./frontend.key -out ./frontend.cert
```

with
Expand Down Expand Up @@ -93,13 +93,13 @@ So we modify the "gRPC server example" to use our own self-signed certificate:
// ...

// Read cert and key file
BackendCert := ioutil.ReadFile("./backend.cert")
BackendKey := ioutil.ReadFile("./backend.key")
BackendCert, _ := ioutil.ReadFile("./backend.cert")
BackendKey, _ := ioutil.ReadFile("./backend.key")

// Generate Certificate struct
cert, err := tls.X509KeyPair(BackendCert, BackendKey)
if err != nil {
return err
log.Fatalf("failed to parse certificate: %v", err)
}

// Create credentials
Expand All @@ -110,7 +110,7 @@ serverOption := grpc.Creds(creds)
var s *grpc.Server = grpc.NewServer(serverOption)
defer s.Stop()

helloworld.RegisterGreeterServer(s, &myserver{})
pb.RegisterGreeterServer(s, &server{})
err := s.Serve(lis)

// ...
Expand All @@ -122,7 +122,7 @@ Next we will modify gRPC Client to use our Træfik self-signed certificate:
// ...

// Read cert file
FrontendCert := ioutil.ReadFile("./frontend.cert")
FrontendCert, _ := ioutil.ReadFile("./frontend.cert")

// Create CertPool
roots := x509.NewCertPool()
Expand All @@ -132,16 +132,16 @@ roots.AppendCertsFromPEM(FrontendCert)
credsClient := credentials.NewClientTLSFromCert(roots, "")

// Dial with specific Transport (with credentials)
conn, err := grpc.Dial("https://frontend:4443", grpc.WithTransportCredentials(credsClient))
conn, err := grpc.Dial("frontend.local:4443", grpc.WithTransportCredentials(credsClient))
if err != nil {
return err
log.Fatalf("did not connect: %v", err)
}

defer conn.Close()
client := helloworld.NewGreeterClient(conn)
client := pb.NewGreeterClient(conn)

name := "World"
r, err := client.SayHello(context.Background(), &helloworld.HelloRequest{Name: name})
r, err := client.SayHello(context.Background(), &pb.HelloRequest{Name: name})

// ...
```
Expand Down