httptransport

type ClientCertProvider = func(*tls.CertificateRequestInfo) (*tls.Certificate, error)

type InternalOptions struct {
	// EnableJWTWithScope specifies if scope can be used with self-signed JWT.
	EnableJWTWithScope bool
	// DefaultAudience specifies a default audience to be used as the audience
	// field ("aud") for the JWT token authentication.
	DefaultAudience string
	// DefaultEndpointTemplate combined with UniverseDomain specifies the
	// default endpoint.
	DefaultEndpointTemplate string
	// DefaultMTLSEndpoint specifies the default mTLS endpoint.
	DefaultMTLSEndpoint string
	// DefaultScopes specifies the default OAuth2 scopes to be used for a
	// service.
	DefaultScopes []string
	// SkipValidation bypasses validation on Options. It should only be used
	// internally for clients that needs more control over their transport.
	SkipValidation bool
}

type Options struct {
	// DisableTelemetry disables default telemetry (OpenCensus). An example
	// reason to do so would be to bind custom telemetry that overrides the
	// defaults.
	DisableTelemetry bool
	// DisableAuthentication specifies that no authentication should be used. It
	// is suitable only for testing and for accessing public resources, like
	// public Google Cloud Storage buckets.
	DisableAuthentication bool
	// Headers are extra HTTP headers that will be appended to every outgoing
	// request.
	Headers http.Header
	// BaseRoundTripper overrides the base transport used for serving requests.
	// If specified ClientCertProvider is ignored.
	BaseRoundTripper http.RoundTripper
	// Endpoint overrides the default endpoint to be used for a service.
	Endpoint string
	// APIKey specifies an API key to be used as the basis for authentication.
	// If set DetectOpts are ignored.
	APIKey string
	// Credentials used to add Authorization header to all requests. If set
	// DetectOpts are ignored.
	Credentials *auth.Credentials
	// ClientCertProvider is a function that returns a TLS client certificate to
	// be used when opening TLS connections. It follows the same semantics as
	// crypto/tls.Config.GetClientCertificate.
	ClientCertProvider ClientCertProvider
	// DetectOpts configures settings for detect Application Default
	// Credentials.
	DetectOpts *detect.DetectOptions
	// UniverseDomain is the default service domain for a given Cloud universe.
	// The default value is "googleapis.com". This is the universe domain
	// configured for the client, which will be compared to the universe domain
	// that is separately configured for the credentials.
	UniverseDomain string

	// InternalOptions are NOT meant to be set directly by consumers of this
	// package, they should only be set by generated client code.
	InternalOptions *InternalOptions
}