assertEquals(6, PacConstants.SERVER_CHECKSUM, "SERVER_CHECKSUM should be 6");
        assertEquals(7, PacConstants.PRIVSVR_CHECKSUM, "PRIVSVR_CHECKSUM should be 7");
        assertEquals(0xA, PacConstants.CLIENT_NAME_TYPE, "CLIENT_NAME_TYPE should be 0xA");
        assertEquals(0xB, PacConstants.CONSTRAINT_DELEGATIION_TYPE, "CONSTRAINT_DELEGATIION_TYPE should be 0xB");
        assertEquals(0xC, PacConstants.CLIENT_UPN_TYPE, "CLIENT_UPN_TYPE should be 0xC");

0x8a86c7dbebf27b68}, {0x9, 0x3}: {0x1: 0xa64e3be6d6fe7e92}, {0x9, 0x4}: {0x1: 0x239b71c41745d207}, {0x9, 0x5}: {0x1: 0x2d0803094c5a86ce}, {0x9, 0x6}: {0x1: 0xa3c2539b3af84874}, {0xa, 0x1}: {0x1: 0x7d30d91b89fcec21}, {0xa, 0x2}: {0x1: 0xfa5af9aa9f1857a3}, {0xa, 0x3}: {0x1: 0x84bc4bda8af81f90}, {0xa, 0x4}: {0x1: 0x6c1cba8631de994a}, {0xa, 0x5}: {0x1: 0x4383e58a086cc1ac}, {0xb, 0x1}: {0x1: 0x4ed2929a2df690b}, {0xb, 0x2}: {0x1: 0xecd6f1b1399775c0}, {0xb, 0x3}: {0x1: 0xc78cfbfc0dc64d01}, {0xb, 0x4}: {0x1: 0xb2643390973702d6},...

    /**
     * Buffer type for privilege server (KDC) checksum signature.
     */
    int PRIVSVR_CHECKSUM = 7;

    /**
     * Buffer type for client name information.
     */
    int CLIENT_NAME_TYPE = 0xA;
    /**
     * Buffer type for constrained delegation information.
     */
    int CONSTRAINT_DELEGATIION_TYPE = 0xB;
    /**
     * Buffer type for client user principal name.
     */

  FLOW_CONTROL_ERROR(3),

  SETTINGS_TIMEOUT(4),

  STREAM_CLOSED(5),

  FRAME_SIZE_ERROR(6),

  REFUSED_STREAM(7),

  CANCEL(8),

  COMPRESSION_ERROR(9),

  CONNECT_ERROR(0xa),

  ENHANCE_YOUR_CALM(0xb),

  INADEQUATE_SECURITY(0xc),

  HTTP_1_1_REQUIRED(0xd),
  ;

  companion object {
    fun fromHttp2(code: Int): ErrorCode? = values().find { it.httpCode == code }
  }

     *
     * This method removes characters that are not allowed in XML documents
     * according to the XML 1.0 specification. Valid characters include:
     * - Tab (0x9)
     * - Line feed (0xA)
     * - Carriage return (0xD)
     * - Any character between 0x20 and 0xD7FF
     * - Any character between 0xE000 and 0xFFFD
     * - Any character between 0x10000 and 0x10FFFF
     *

  internal const val OPCODE_TEXT = 0x1
  internal const val OPCODE_BINARY = 0x2

  internal const val OPCODE_CONTROL_CLOSE = 0x8
  internal const val OPCODE_CONTROL_PING = 0x9
  internal const val OPCODE_CONTROL_PONG = 0xa

  /**
   * Maximum length of frame payload. Larger payloads, if supported by the frame type, can use the
   * special values [PAYLOAD_SHORT] or [PAYLOAD_LONG].
   */
  internal const val PAYLOAD_BYTE_MAX = 125L