out.write(huffmanBytes)
        } else {
          writeInt(data.size, PREFIX_7_BITS, 0)
          out.write(data)
        }
      }

      fun resizeHeaderTable(headerTableSizeSetting: Int) {
        this.headerTableSizeSetting = headerTableSizeSetting
        val effectiveHeaderTableSize = minOf(headerTableSizeSetting, SETTINGS_HEADER_TABLE_SIZE_LIMIT)

    withLock {
      if (closed) throw IOException("closed")
      this.maxFrameSize = peerSettings.getMaxFrameSize(maxFrameSize)
      if (peerSettings.headerTableSize != -1) {
        hpackWriter.resizeHeaderTable(peerSettings.headerTableSize)
      }
      frameHeader(
        streamId = 0,
        length = 0,
        type = TYPE_SETTINGS,
        flags = FLAG_ACK,
      )
      sink.flush()
    }
  }