common

type Dialer struct {
	GRPC      GRPCDialFunc
	Websocket WebsocketDialFunc
	HTTP      HTTPDoFunc
	TCP       TCPDialFunc
}

type EchoMetrics struct {
	HTTPRequests monitoring.Metric
	GrpcRequests monitoring.Metric
	TCPRequests  monitoring.Metric
}

type GRPCDialFunc func(ctx context.Context, address string, opts ...grpc.DialOption) (*grpc.ClientConn, error)

type HTTPDoFunc func(client *http.Client, req *http.Request) (*http.Response, error)

type Port struct {
	// Name ascribes a human readable name for the port object. When a
	// service has multiple ports, the name field is mandatory
	Name string

	// Port number where the service can be reached. Does not necessarily
	// map to the corresponding port numbers for the instances behind the
	// service.
	Port int

	// Protocol to be used for the port.
	Protocol protocol.Instance

	// TLS determines if the port will use TLS.
	TLS bool

	// ServerFirst if a port will be server first
	ServerFirst bool

	// InstanceIP determines if echo will listen on the instance IP, or wildcard
	InstanceIP bool

	// LocalhostIP determines if echo will listen on the localhost IP; otherwise, it will listen on wildcard
	LocalhostIP bool

	// XDSServer, for gRPC servers, will use the xds.NewGRPCServer constructor to rely on XDS configuration.
	// If this flag is set but the environment variable feature gates aren't, we should fail due to gRPC internals.
	XDSServer bool

	// XDSTestBootstrap allows settings per-endpoint bootstrap without using the GRPC_XDS_BOOTSTRAP env var
	XDSTestBootstrap []byte

	// XDSReadinessTLS determines if the XDS server should expect a TLS server, used for readiness probes
	XDSReadinessTLS bool
}

type PortList []*Port

type TCPDialFunc func(dialer net.Dialer, ctx context.Context, address string) (net.Conn, error)

type TLSSettings struct {
	// If not empty, RootCert supplies the extra root cert that will be appended to the system cert pool.
	RootCert   string
	ClientCert string
	Key        string
	// If provided, override the host name used for the connection
	// This needed for integration tests, as we are connecting using a port-forward (127.0.0.1), so
	// any DNS certs will not validate.
	Hostname string
	// If set to true, the cert will be provisioned by proxy, and extra cert volume will be mounted.
	ProxyProvision bool
	// AcceptAnyALPN, if true, will make the server accept ANY ALPNs. This comes at the expense of
	// allowing h2 negotiation and being able to detect the negotiated ALPN (as there is none), because
	// Golang doesn't like us doing this (https://github.com/golang/go/issues/46310).
	// This is useful when the server is simulating Envoy which does unconventional things with ALPN.
	AcceptAnyALPN bool
}

type WebsocketDialFunc func(dialer *websocket.Dialer, urlStr string, requestHeader http.Header) (*websocket.Conn, *http.Response, error)