)

type meshAuthCredentials struct {
	k8sCreds credentials.PerRPCCredentials
	gcpCreds credentials.PerRPCCredentials
	project  string
}

func (c *meshAuthCredentials) GetRequestMetadata(ctx context.Context, uri ...string) (map[string]string, error) {
	ret := map[string]string{
		"x-goog-user-project": c.project,
	}
	if err := updateAuthHdrs(ctx, uri, "k8s", c.k8sCreds, ret, "x-mesh-authorization"); err != nil {

package kubeinject

import (
	"context"
	"fmt"
	"net/http"
	"strings"

	"golang.org/x/oauth2"
	"golang.org/x/oauth2/google"
)

func isMCPAddr(addr string) bool {
	// A bit inexact but should be good enough.
	return strings.Contains(addr, ".googleapis.com/") || strings.Contains(addr, ".googleapis.com:443/")
}

func mcpTransport(ctx context.Context, tr http.RoundTripper) (http.RoundTripper, error) {