// Note: The check method tries to listen on given port and closes it.
// It is possible to have a disconnected client in this tiny window of time.
func CheckPortAvailability(host, port string, opts TCPOptions) (err error) {
	lc := &net.ListenConfig{}

	ctx, cancel := context.WithTimeout(context.Background(), time.Second)
	defer cancel()

	l, err := lc.Listen(ctx, "tcp", net.JoinHostPort(host, port))
	if err != nil {

	"bufio"
	"io"
	"net"
	"sync"
	"testing"
	"time"
)

// Test deadlineconn handles read timeout properly by reading two messages beyond deadline.
func TestBuffConnReadTimeout(t *testing.T) {
	l, err := net.Listen("tcp", "localhost:0")
	if err != nil {
		t.Fatalf("unable to create listener. %v", err)
	}
	defer l.Close()
	serverAddr := l.Addr().String()

	tcpListener, ok := l.(*net.TCPListener)
	if !ok {

	})
}

// Return the list of address that MinIO server needs to listen on:
//   - Returning 127.0.0.1 is necessary so Console will be able to send
//     requests to the local S3 API.
//   - The returned List needs to be deduplicated as well.
func getServerListenAddrs() []string {
	// Use a string set to avoid duplication
	addrs := set.NewStringSet()
	// Listen on local interface to receive requests from Console

			}

			// Copy a valid config file into tempDir
			if err := file.AtomicCopy(filepath.Join("testdata", c.validConfigFilename), tempDir, c.cniConfigFilename); err != nil {
				t.Fatal(err)
			}

			// Listen for isReady to be set to true
			ticker := time.NewTicker(500 * time.Millisecond)
			defer ticker.Stop()
			readyChan := make(chan bool)
			go func(ctx context.Context, tick <-chan time.Time) {
				for {

	ingress *ingressInfo,
) {
	if ingress == nil || ingress.service == nil || len(ingress.pods) == 0 {
		return
	}
	// The ingressgateway service offers a lot of ports but the pod doesn't listen to all
	// of them.  For example, it doesn't listen on 443 without additional setup.  This prints
	// the most basic output.
	portsToShow := map[string]bool{
		"http2": true,
		"http":  true,
	}

				}
			})
			return nil
		},
	}

	ctx, cancel := context.WithTimeout(context.Background(), time.Second)
	defer cancel()

	l, err := lc.Listen(ctx, "tcp", net.JoinHostPort(host, port))
	if err != nil {
		return err
	}

	// As we are able to listen on this network, the port is not in use.
	// Close the listener and continue check other networks.
	return l.Close()

		}
	}
}

func getHosts(n int) (hosts []string, listeners []net.Listener, err error) {
	for i := 0; i < n; i++ {
		l, err := net.Listen("tcp", "127.0.0.1:0")
		if err != nil {
			if l, err = net.Listen("tcp6", "[::1]:0"); err != nil {
				return nil, nil, fmt.Errorf("httptest: failed to listen on a port: %v", err)
			}
		}
		addr := l.Addr()
		hosts = append(hosts, "http://"+addr.String())
		listeners = append(listeners, l)

		Control: setTCPParametersFn(opts),
	}

	for i, serverAddr := range serverAddrs {
		var (
			l net.Listener
			e error
		)
		if l, e = listenCfg.Listen(ctx, "tcp", serverAddr); e != nil {
			if opts.Trace != nil {
				opts.Trace(fmt.Sprint("listenCfg.Listen: ", e.Error()))
			}

			listenErrs[i] = e
			continue
		}

		tcpListener, ok := l.(*net.TCPListener)
		if !ok {

		select {
		case listenCh <- *b:
		default:
			// Do not block on slow receivers.
			b.Recycle()
		}
		return nil
	})
}

// Listen - listen on peers.
func (client *peerRESTClient) Listen(ctx context.Context, listenCh chan<- []byte, v url.Values) {
	go func() {
		for {
			client.doListen(ctx, listenCh, v)
			select {
			case <-ctx.Done():
				return
			default:

		SSHConfig:            sshConfig,
		HandleSFTPSession:    handleSFTPSession,
	})
	if err != nil {
		logger.Fatal(err, "Unable to start SFTP Server")
	}

	err = sftpServer.Listen()
	if err != nil {
		logger.Fatal(err, "SFTP Server had an unrecoverable error while accepting connections")
	}