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Eric Chiang 933fc39e63 vendor: revendor for gRPC

2016-07-31 23:26:27 -07:00

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Authentication

As outlined in the gRPC authentication guide there are a number of different mechanisms for asserting identity between an client and server. We'll present some code-samples here demonstrating how to provide TLS support encryption and identity assertions as well as passing OAuth2 tokens to services that support it.

Enabling TLS on a gRPC client

conn, err := grpc.Dial(serverAddr, grpc.WithTransportCredentials(credentials.NewClientTLSFromCert(nil, "")))

Enabling TLS on a gRPC server

creds, err := credentials.NewServerTLSFromFile(certFile, keyFile)
if err != nil {
  log.Fatalf("Failed to generate credentials %v", err)
}
lis, err := net.Listen("tcp", ":0")
server := grpc.NewServer(grpc.Creds(creds))
...
server.Serve(lis)

Authenticating with Google

Google Compute Engine (GCE)

conn, err := grpc.Dial(serverAddr, grpc.WithTransportCredentials(credentials.NewClientTLSFromCert(nil, ""), grpc.WithPerRPCCredentials(oauth.NewComputeEngine())))

JWT

jwtCreds, err := oauth.NewServiceAccountFromFile(*serviceAccountKeyFile, *oauthScope)
if err != nil {
  log.Fatalf("Failed to create JWT credentials: %v", err)
}
conn, err := grpc.Dial(serverAddr, grpc.WithTransportCredentials(credentials.NewClientTLSFromCert(nil, ""), grpc.WithPerRPCCredentials(jwtCreds)))

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