func TestCheckURL(t *testing.T) {
	testCases := []struct {
		urlStr     string
		shouldPass bool
	}{
		{"", false},
		{":", false},
		{"http://localhost/", true},
		{"http://127.0.0.1/", true},
		{"proto://myhostname/path", true},
	}

	// Validates fetching local address.
	for i, testCase := range testCases {
		_, err := checkURL(testCase.urlStr)
		if testCase.shouldPass && err != nil {

	}
	if err == nil && len(versions) == 0 {
		// This special case is needed to handle len(xlMeta.versions) == 0
		versions = []FileInfo{
			{
				Volume:   volume,
				Name:     path,
				Deleted:  true,
				IsLatest: true,
				ModTime:  timeSentinel1970,
			},
		}
	}
	if err != nil {
		return FileInfoVersions{}, err
	}

	return FileInfoVersions{
		Volume:        volume,
		Name:          path,

			defer wg.Done()

			if c == nil {
				ch <- refreshResult{offline: true}
				return
			}

			ctx, cancel := context.WithTimeout(ctx, ds.Timeouts.RefreshCall)
			defer cancel()

			refreshed, err := c.Refresh(ctx, args)
			if err != nil {
				ch <- refreshResult{offline: true}
				log("dsync: Unable to call Refresh failed with %s for %#v at %s\n", err, args, c)
			} else {

	}{
		{[]string{"93.184.216.34:65432"}, time.Duration(0), time.Duration(0), time.Duration(0), []bool{true}},                           // 1
		{[]string{"example.org:65432"}, time.Duration(0), time.Duration(0), time.Duration(0), []bool{true}},                             // 2
		{[]string{"unknown-host"}, time.Duration(0), time.Duration(0), time.Duration(0), []bool{true}},                                  // 3

		return false
	}

	return true
}

func extractTraceOptions(r *http.Request) (opts madmin.ServiceTraceOpts, err error) {
	if err := opts.ParseParams(r); err != nil {
		return opts, err
	}
	// Support deprecated 'all' query
	if r.Form.Get("all") == "true" {
		opts.S3 = true
		opts.Internal = true
		opts.Storage = true
		opts.OS = true
		// Older mc - cannot deal with more types...

			args: args{
				namespace: namespaceWithAmbientEnabledLabel,
				pod:       unlabelledPod,
			},
			want: true,
		},
		{
			name: "ambient mode enabled for pod",
			args: args{
				namespace: unlabelledNamespace,
				pod:       podWithAmbientEnabledLabel,
			},
			want: true,
		},
		{
			name: "ambient mode enabled for both namespace and pod",
			args: args{

				// We are past the prefix, don't continue.
				pastPrefix = true
				return false
			}
			if !o.IncludeDirectories && (entry.isDir() || (!o.Versioned && entry.isObjectDir() && entry.isLatestDeletemarker())) {
				return true
			}
			if !entry.isInDir(o.Prefix, o.Separator) {
				return true
			}
			if !o.InclDeleted && entry.isObject() && entry.isLatestDeletemarker() && !entry.isObjectDir() {

			if tok.Name.Local == "key" {
				if err := d.DecodeElement(&key, &tok); err != nil {
					return nil, err
				}
				hasKey = true
			} else if hasKey {
				var val string
				var err error
				switch n := tok.Name.Local; n {
				case "true", "false":
					// Bools are represented as <true/> and <false/>.
					val = n
					err = d.Skip()
				default:
					err = d.DecodeElement(&val, &tok)
				}

		}

		return minio.New(f.endpoint, &minio.Options{
			Creds:     mcreds,
			Secure:    globalIsTLS,
			Transport: globalRemoteFTPClientTransport,
		})
	}

	// ok == true - at this point

	if ui.Credentials.IsTemp() {
		// Temporary credentials are not allowed.
		return nil, errAuthentication
	}

	return minio.New(f.endpoint, &minio.Options{

			Description: `customize scanner speed (default|slowest|slow|fast|fastest)` + defaultHelpPostfix(Speed),
			Optional:    true,
			Type:        "string",
		},
		config.HelpKV{
			Key:         ExcessVersions,
			Description: `alert per object beyond this many versions` + defaultHelpPostfix(ExcessVersions),
			Optional:    true,
			Type:        "int",
		},
		config.HelpKV{
			Key:         ExcessFolders,