s := &CniPluginServer{
		handlers:  handlers,
		dataplane: dataplane,
		cniListenServer: &http.Server{
			Handler: mux,
		},
		cniListenServerCancel: cancel,
		sockAddress:           pluginSocket,
		ctx:                   ctx,
	}

	mux.HandleFunc(pconstants.CNIAddEventPath, s.handleAddEvent)
	return s
}

func (s *CniPluginServer) Stop() {
	s.cniListenServerCancel()
}

In this case, the `startup` event handler function will initialize the items "database" (just a `dict`) with some values.

You can add more than one event handler function.

And your application won't start receiving requests until all the `startup` event handlers have completed.

### `shutdown` event

To add a function that should be run when the application is shutting down, declare it with the event `"shutdown"`:

        resource_handler.setResourceBase(docRoot.getAbsolutePath());
        Log.info("serving " + resource_handler.getBaseResource());
        final HandlerList handlers = new HandlerList();
        handlers.setHandlers(new Handler[] { resource_handler, new DefaultHandler() });
        server.setHandler(handlers);
    }

    public void start() {
        try {
            server.start();
        } catch (final Exception e) {

        resource_handler.setResourceBase(docRoot.getAbsolutePath());
        Log.info("serving " + resource_handler.getBaseResource());
        final HandlerList handlers = new HandlerList();
        handlers.setHandlers(new Handler[] { resource_handler, new DefaultHandler() });
        server.setHandler(handlers);
    }

    public void start() {
        try {
            server.start();
        } catch (final Exception e) {

	if err != nil {
		return "", "", err
	}
	return handlers.InferPodInfoFromTypedResource(name, i.NamespaceOrDefault(namespace), MakeKubeFactory(client))
}

func (i *instance) InferPodsFromTypedResource(name, namespace string) ([]string, string, error) {
	client, err := i.CLIClient()
	if err != nil {
		return nil, "", err
	}

	fs.On("AddPodToMesh",
		ctx,
		mock.IsType(pod),
		util.GetPodIPsIfPresent(pod),
		"",
	).Return(nil)

	server := getFakeDP(fs, client.Kube())

	handlers := setupHandlers(ctx, client, server, "istio-system")
	client.RunAndWait(ctx.Done())
	go handlers.Start()

	// label the namespace
	labelsPatch := []byte(fmt.Sprintf(`{"metadata":{"labels":{"%s":"%s"}}}`,
		label.IoIstioDataplaneMode.Name, constants.DataplaneModeAmbient))

This was changed in version 0.110.0 to fix unhandled memory consumption from forwarded exceptions without a handler (internal server errors), and to make it consistent with the behavior of regular Python code.

	success = true

	// Make sure we remove any existing headers before
	// proxying the request to another node.
	for k := range w.Header() {
		w.Header().Del(k)
	}

	f := handlers.NewForwarder(&handlers.Forwarder{
		PassHost:     true,
		RoundTripper: ep.Transport,
		ErrorHandler: func(w http.ResponseWriter, r *http.Request, err error) {
			success = false

  // handler specifies the underlying runtime and configuration that the CRI
  // implementation will use to handle pods of this class. The possible values
  // are specific to the node & CRI configuration.  It is assumed that all
  // handlers are available on every node, and handlers of the same name are
  // equivalent on every node.
  // For example, a handler called "runc" might specify that the runc OCI

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

// Originally from https://github.com/gorilla/handlers with following license
// https://raw.githubusercontent.com/gorilla/handlers/master/LICENSE, forked
// and heavily modified for MinIO's internal needs.

package handlers

import (
	"net"
	"net/http"
	"regexp"
	"strings"
)

var (
	// De-facto standard header keys.