const (
	ReservedMetadataPrefix      = "X-Minio-Internal-"
	ReservedMetadataPrefixLower = "x-minio-internal-"
)

// containsReservedMetadata returns true if the http.Header contains
// keys which are treated as metadata but are reserved for internal use
// and must not set by clients
func containsReservedMetadata(header http.Header) bool {
	for key := range header {
		if _, ok := validSSEReplicationHeaders[key]; ok {
			return false
		}