}

        // SETTINGS_MAX_CONCURRENT_STREAMS
        3 -> id = 4 // Renumbered in draft 10.

        // SETTINGS_INITIAL_WINDOW_SIZE
        4 -> {
          id = 7 // Renumbered in draft 10.
          if (value < 0) {
            throw IOException("PROTOCOL_ERROR SETTINGS_INITIAL_WINDOW_SIZE > 2^31 - 1")
          }
        }

        // SETTINGS_MAX_FRAME_SIZE
        5 -> {