}{
	// RFC 9180, Section 7.3
	0x0001: {keySize: 16, nonceSize: 12, aead: aesGCMNew},
	0x0002: {keySize: 32, nonceSize: 12, aead: aesGCMNew},
	0x0003: {keySize: chacha20poly1305.KeySize, nonceSize: chacha20poly1305.NonceSize, aead: chacha20poly1305.New},
}

var SupportedKDFs = map[uint16]func() *hkdfKDF{
	// RFC 9180, Section 7.2
	0x0001: func() *hkdfKDF { return &hkdfKDF{crypto.SHA256} },
}

00000330  03 01 00 0a 0d 00 00 06  03 01 02 40 00 00 16 03  |...........@....|
00000340  01 00 04 0e 00 00 00                              |.......|
>>> Flow 3 (client to server)
00000000  16 03 01 02 0a 0b 00 02  06 00 02 03 00 02 00 30  |...............0|
00000010  82 01 fc 30 82 01 5e 02  09 00 9a 30 84 6c 26 35  |...0..^....0.l&5|
00000020  d9 17 30 09 06 07 2a 86  48 ce 3d 04 01 30 45 31  |..0...*.H.=..0E1|

00000260  e4 c7 78 0d ae cb be 9e  4e 36 24 31 7b 6a 0f 39  |..x.....N6$1{j.9|
00000270  95 12 07 8f 2a 16 03 03  00 b6 0c 00 00 b2 03 00  |....*...........|
00000280  1d 20 04 b4 79 b4 2c 1d  0f b3 4b ff 67 e7 24 88  |. ..y.,...K.g.$.|
00000290  d6 db 4f 1e 66 da 0e f2  89 5a 53 ed 4e ba ad 4c  |..O.f....ZS.N..L|
000002a0  81 0a 04 03 00 8a 30 81  87 02 42 01 fb 16 53 43  |......0...B...SC|

00000360  03 01 02 01 03 02 02 02  04 02 05 02 06 02 00 00  |................|
00000370  16 03 03 00 04 0e 00 00  00                       |.........|
>>> Flow 3 (client to server)
00000000  16 03 03 02 0a 0b 00 02  06 00 02 03 00 02 00 30  |...............0|
00000010  82 01 fc 30 82 01 5e 02  09 00 9a 30 84 6c 26 35  |...0..^....0.l&5|
00000020  d9 17 30 09 06 07 2a 86  48 ce 3d 04 01 30 45 31  |..0...*.H.=..0E1|

}

// pollfd represents the poll structure for AIX operating system.
type pollfd struct {
	fd      int32
	events  int16
	revents int16
}

const _POLLIN = 0x0001
const _POLLOUT = 0x0002
const _POLLHUP = 0x2000
const _POLLERR = 0x4000

var (
	pfds           []pollfd
	pds            []*pollDesc
	mtxpoll        mutex
	mtxset         mutex
	rdwake         int32
	wrwake         int32

>>> Flow 1 (client to server)
00000000  16 03 01 00 fe 01 00 00  fa 03 03 00 00 00 00 00  |................|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  00 00 00 20 00 00 00 00  |........... ....|
00000030  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000040  00 00 00 00 00 00 00 00  00 00 00 00 00 32 cc a9  |.............2..|

00000040  37 fb b2 25 2c d3 82 69  ed d7 c9 f0 cc a8 00 00  |7..%,..i........|
00000050  11 ff 01 00 01 00 00 0b  00 04 03 00 01 02 00 17  |................|
00000060  00 00 16 03 03 02 59 0b  00 02 55 00 02 52 00 02  |......Y...U..R..|
00000070  4f 30 82 02 4b 30 82 01  b4 a0 03 02 01 02 02 09  |O0..K0..........|
00000080  00 e8 f0 9d 3f e2 5b ea  a6 30 0d 06 09 2a 86 48  |....?.[..0...*.H|
00000090  86 f7 0d 01 01 0b 05 00  30 1f 31 0b 30 09 06 03  |........0.1.0...|

00000040  b2 55 1a ea e3 4b 5a 9f  ac e9 7b 37 c0 2f 00 00  |.U...KZ...{7./..|
00000050  11 ff 01 00 01 00 00 0b  00 04 03 00 01 02 00 17  |................|
00000060  00 00 16 03 03 02 59 0b  00 02 55 00 02 52 00 02  |......Y...U..R..|
00000070  4f 30 82 02 4b 30 82 01  b4 a0 03 02 01 02 02 09  |O0..K0..........|
00000080  00 e8 f0 9d 3f e2 5b ea  a6 30 0d 06 09 2a 86 48  |....?.[..0...*.H|
00000090  86 f7 0d 01 01 0b 05 00  30 1f 31 0b 30 09 06 03  |........0.1.0...|

>>> Flow 1 (client to server)
00000000  16 03 01 00 fe 01 00 00  fa 03 03 00 00 00 00 00  |................|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000020  00 00 00 00 00 00 00 00  00 00 00 20 00 00 00 00  |........... ....|
00000030  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
00000040  00 00 00 00 00 00 00 00  00 00 00 00 00 32 cc a9  |.............2..|

00000060  ff 01 00 01 00 00 17 00  00 00 12 00 00 00 05 00  |................|
00000070  05 01 00 00 00 00 00 0a  00 0a 00 08 00 1d 00 17  |................|
00000080  00 18 00 19 00 0d 00 1a  00 18 08 04 04 03 08 07  |................|
00000090  08 05 08 06 04 01 05 01  06 01 05 03 06 03 02 01  |................|
000000a0  02 03 00 2b 00 09 08 03  04 03 03 03 02 03 01 00  |...+............|