func extractMetadataFromReq(ctx context.Context, r *http.Request) (metadata map[string]string, err error) {
	return extractMetadata(ctx, textproto.MIMEHeader(r.Form), textproto.MIMEHeader(r.Header))
}

func extractMetadata(ctx context.Context, mimesHeader ...textproto.MIMEHeader) (metadata map[string]string, err error) {
	metadata = make(map[string]string)

	for _, hdr := range mimesHeader {

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

package lock

import (
	"bytes"
	"context"
	"encoding/xml"
	"errors"
	"fmt"
	"io"
	"net/http"
	"net/textproto"
	"strings"
	"time"

	"github.com/beevik/ntp"
	"github.com/minio/minio/internal/amztime"
	xhttp "github.com/minio/minio/internal/http"

	"github.com/minio/minio/internal/logger"
	"github.com/minio/pkg/v2/env"

	if getCert == nil {
		return nil
	}

	tlsConfig := &tls.Config{
		PreferServerCipherSuites: true,
		MinVersion:               tls.VersionTLS12,
		NextProtos:               []string{"http/1.1", "h2"},
		GetCertificate:           getCert,
		ClientSessionCache:       tls.NewLRUClientSessionCache(tlsClientSessionCacheSize),
	}