}

    limit = newLimit
    constructed = header.constructed
    if (name != null) path += name
    try {
      val result = block(header)

      // The object processed bytes beyond its range.
      if (newLimit != -1L && byteCount > newLimit) {
        throw ProtocolException("unexpected byte count at $this")
      }

      return result
    } finally {
      peekedHeader = null