傳送通過驗證的 gRPC 要求
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[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],[],[],[],null,["# Send gRPC requests with authentication\n\nSends a request with an authorization header using a gRPC connection.\n\nExplore further\n---------------\n\n\nFor detailed documentation that includes this code sample, see the following:\n\n- [Using gRPC](/run/docs/triggering/grpc)\n\nCode sample\n-----------\n\n### Go\n\n\nTo authenticate to Cloud Run, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n\n import (\n \t\"context\"\n \t\"fmt\"\n \t\"time\"\n\n \t\"google.golang.org/api/idtoken\"\n \t\"google.golang.org/grpc\"\n \tgrpcMetadata \"google.golang.org/grpc/metadata\"\n\n \tpb \"github.com/GoogleCloudPlatform/golang-samples/run/grpc-ping/pkg/api/v1\"\n )\n\n // pingRequestWithAuth mints a new Identity Token for each request.\n // This token has a 1 hour expiry and should be reused.\n // audience must be the auto-assigned URL of a Cloud Run service or HTTP Cloud Function without port number.\n func pingRequestWithAuth(conn *grpc.ClientConn, p *pb.Request, audience string) (*pb.Response, error) {\n \tctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)\n \tdefer cancel()\n\n \t// Create an identity token.\n \t// With a global TokenSource tokens would be reused and auto-refreshed at need.\n \t// A given TokenSource is specific to the audience.\n \ttokenSource, err := idtoken.NewTokenSource(ctx, audience)\n \tif err != nil {\n \t\treturn nil, fmt.Errorf(\"idtoken.NewTokenSource: %w\", err)\n \t}\n \ttoken, err := tokenSource.Token()\n \tif err != nil {\n \t\treturn nil, fmt.Errorf(\"TokenSource.Token: %w\", err)\n \t}\n\n \t// Add token to gRPC Request.\n \tctx = grpcMetadata.AppendToOutgoingContext(ctx, \"authorization\", \"Bearer \"+token.AccessToken)\n\n \t// Send the request.\n \tclient := pb.NewPingServiceClient(conn)\n \treturn client.Send(ctx, p)\n }\n\nWhat's next\n-----------\n\n\nTo search and filter code samples for other Google Cloud products, see the\n[Google Cloud sample browser](/docs/samples?product=cloudrun)."]]