THPackState

type THPackState = (

  READ_HEADER_REPRESENTATION,

  READ_MAX_DYNAMIC_TABLE_SIZE,

  READ_INDEXED_HEADER,

  READ_INDEXED_HEADER_NAME,

  READ_LITERAL_HEADER_NAME_LENGTH_PREFIX,

  READ_LITERAL_HEADER_NAME_LENGTH,

  READ_LITERAL_HEADER_NAME,

  SKIP_LITERAL_HEADER_NAME,

  READ_LITERAL_HEADER_VALUE_LENGTH_PREFIX,

  READ_LITERAL_HEADER_VALUE_LENGTH,

  READ_LITERAL_HEADER_VALUE,

  SKIP_LITERAL_HEADER_VALUE

);