bytesIn.writeByte(0x3F) // Dynamic table size update (size = 110).
    bytesIn.writeByte(0x4F)
    bytesIn.writeByte(0x40) // Literal indexed
    bytesIn.writeByte(0x0a) // Literal name (len = 10)
    bytesIn.writeUtf8("custom-foo")
    bytesIn.writeByte(0x0d) // Literal value (len = 13)
    bytesIn.writeUtf8("custom-header")
    bytesIn.writeByte(0x40) // Literal indexed
    bytesIn.writeByte(0x0a) // Literal name (len = 10)

            }
            b and 0x40 == 0x40 -> {
              // 01NNNNNN
              val index = readInt(b, PREFIX_6_BITS)
              readLiteralHeaderWithIncrementalIndexingIndexedName(index - 1)
            }
            b and 0x20 == 0x20 -> {
              // 001NNNNN
              maxDynamicTableByteCount = readInt(b, PREFIX_5_BITS)

0x71, 0xd8, 0x31, 0x15, 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd,...

		0x84, 0xcb, 0x2d, 0x9f, 0xae, 0x2d, 0x67, 0xfd, 0x96, 0xfb, 0x92, 0x6c, 0x19,
		0x8e, 0x7, 0x73, 0x99, 0xfd, 0xc8, 0x15, 0xc0, 0xaf, 0x9, 0x7d, 0xde, 0x5a,
		0xad, 0xef, 0xf4, 0x4d, 0xe7, 0xe, 0x82, 0x7f, 0x48, 0x78, 0x43, 0x24, 0x39,
		0xbf, 0xee, 0xb9, 0x60, 0x68, 0xd0, 0x47, 0x4f, 0xc5, 0xd, 0x6d, 0x90, 0xbf,
		0x3a, 0x98, 0xdf, 0xaf, 0x10, 0x40, 0xc8, 0x9c, 0x2, 0xd6, 0x92, 0xab, 0x3b,

    val codepointDelta: Int,
  ) : MappedRange {
    private val absoluteDelta = abs(codepointDelta)

    val b1: Int
      get() =
        when {
          codepointDelta < 0 -> 0x40 or (absoluteDelta shr 14)
          codepointDelta > 0 -> 0x50 or (absoluteDelta shr 14)
          else -> error("Unexpected codepointDelta of 0")
        }

    val b2: Int
      get() = absoluteDelta shr 7 and 0x7f

    val b3: Int

  const val FLAG_END_STREAM = 0x1 // Used for headers and data.
  const val FLAG_END_HEADERS = 0x4 // Used for headers and continuation.
  const val FLAG_END_PUSH_PROMISE = 0x4
  const val FLAG_PADDED = 0x8 // Used for headers and data.
  const val FLAG_PRIORITY = 0x20 // Used for headers.
  const val FLAG_COMPRESSED = 0x20 // Used for data.

  /** Lookup table for valid frame types. */
  private val FRAME_NAMES =
    arrayOf(
      "DATA",

0x71, 0xd8, 0x31, 0x15, 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd,...

	// string "Algorithm"
	o = append(o, 0x87, 0xa9, 0x41, 0x6c, 0x67, 0x6f, 0x72, 0x69, 0x74, 0x68, 0x6d)
	o = msgp.AppendString(o, z.Algorithm)
	// string "DataBlocks"
	o = append(o, 0xaa, 0x44, 0x61, 0x74, 0x61, 0x42, 0x6c, 0x6f, 0x63, 0x6b, 0x73)
	o = msgp.AppendInt(o, z.DataBlocks)
	// string "ParityBlocks"
	o = append(o, 0xac, 0x50, 0x61, 0x72, 0x69, 0x74, 0x79, 0x42, 0x6c, 0x6f, 0x63, 0x6b, 0x73)

0x10, 0xdb, 0xaf, 0x9a, 0xe8, 0xda, 0xe0, 0x40, 0xa6, 0x80, 0xf2, 0x1c, 0x39, 0xe8, 0x7, 0x38, 0x2c, 0xa4, 0x44, 0x44, 0x69, 0x72, 0xc4, 0x10, 0x4f, 0xe7, 0xd7, 0xf3, 0x15, 0x2d, 0x4c, 0xcd, 0x96, 0x65, 0x24, 0x86, 0xdc, 0x2, 0x1b, 0xed, 0xa6, 0x45, 0x63, 0x41, 0x6c, 0x67, 0x6f, 0x1, 0xa3, 0x45, 0x63, 0x4d, 0x4, 0xa3, 0x45, 0x63, 0x4e, 0x4, 0xa7, 0x45, 0x63, 0x42, 0x53, 0x69, 0x7a, 0x65, 0xd2, 0x0, 0x10, 0x0, 0x0, 0xa7, 0x45, 0x63, 0x49, 0x6e, 0x64, 0x65, 0x78, 0x7, 0xa6, 0x45, 0x63, 0x44, 0x69,...

	for _, c := range s {
		if c >= 0x80 || c == 0x00 {
			return false
		}
	}
	return true
}

// toASCII converts the input to an ASCII C-style string.
// This is a best effort conversion, so invalid characters are dropped.
func toASCII(s string) string {
	if isASCII(s) {
		return s
	}
	b := make([]byte, 0, len(s))
	for _, c := range s {
		if c < 0x80 && c != 0x00 {
			b = append(b, byte(c))
		}
	}