00000050  1d 9c 5a b8 59                                    |..Z.Y|
>>> Flow 4 (server to client)
00000000  14 03 03 00 01 01 16 03  03 00 20 3a 16 00 b6 c5  |.......... :....|
00000010  76 1f 39 6b 17 2d 2f 34  83 c2 fd 1b 57 c4 0c 02  |v.9k.-/4....W...|
00000020  18 16 6c d2 92 69 63 9b  32 33 e0 17 03 03 00 1d  |..l..ic.23......|
00000030  04 97 df f0 2c 4b 3d 69  99 36 eb 0b 11 56 97 ab  |....,K=i.6...V..|

```
{
  buckets: [ ],
  credentials: {
    AccessKeyID: "EJOLVY3K3G4BF37YD1A0",
    SecretAccessKey: "1b+w8LlDqMQOquKxIlZ2ggP+bgE51iwNG7SUVPJJ",

                    54:f0:19:69:fe:ae:19:a3:e1:eb:1e:1b:39:2c:61:
                    fb:7b:21:10:81:b2:ef:29:94:b6:14:6f:ca:eb:4d:
                    f3:f6:84:93:5f:51:2c:7a:ab:9f:34:05:15:62:c4:
                    55:54:2e:75:b9:26:d1:0e:c5:63:41:e5:36:02:3f:
                    1c:5f:fc:1b:07:20:d2:1c:70:a5:a1:e8:08:1d:8f:
                    4c:c3:57:e0:54:72:a6:c9:24:1b:b0:fa:0d:86:f5:

000001d0  55 1d 13 01 01 ff 04 02  30 00 30 19 06 03 55 1d  |U.......0.0...U.|
000001e0  0e 04 12 04 10 9f 91 16  1f 43 43 3e 49 a6 de 6d  |.........CC>I..m|
000001f0  b6 80 d7 9f 60 30 1b 06  03 55 1d 23 04 14 30 12  |....`0...U.#..0.|
00000200  80 10 48 13 49 4d 13 7e  16 31 bb a3 01 d5 ac ab  |..H.IM.~.1......|
00000210  6e 7b 30 19 06 03 55 1d  11 04 12 30 10 82 0e 65  |n{0...U....0...e|

	movq %rdi, %rax
	divq %r8

	# expand remainder to 128 for return
	movq %rdx, %rax
	xorl %edx, %edx
	ret

1:
	# crash - only want 64-bit divisor
	xorl %ecx, %ecx
	movl %ecx, 0(%ecx)
	jmp 1b

.section .note.GNU-stack,"",@progbits
EOF

cat >umod-arm64.c <<'EOF'
typedef unsigned int u128 __attribute__((mode(TI)));

static u128 div(u128 x, u128 y, u128 *rp) {
	int n = 0;

000001a0  05 07 03 02 30 0c 06 03  55 1d 13 01 01 ff 04 02  |....0...U.......|
000001b0  30 00 30 19 06 03 55 1d  0e 04 12 04 10 9f 91 16  |0.0...U.........|
000001c0  1f 43 43 3e 49 a6 de 6d  b6 80 d7 9f 60 30 1b 06  |.CC>I..m....`0..|
000001d0  03 55 1d 23 04 14 30 12  80 10 48 13 49 4d 13 7e  |.U.#..0...H.IM.~|
000001e0  16 31 bb a3 01 d5 ac ab  6e 7b 30 19 06 03 55 1d  |.1......n{0...U.|

000001a0  05 07 03 02 30 0c 06 03  55 1d 13 01 01 ff 04 02  |....0...U.......|
000001b0  30 00 30 19 06 03 55 1d  0e 04 12 04 10 9f 91 16  |0.0...U.........|
000001c0  1f 43 43 3e 49 a6 de 6d  b6 80 d7 9f 60 30 1b 06  |.CC>I..m....`0..|
000001d0  03 55 1d 23 04 14 30 12  80 10 48 13 49 4d 13 7e  |.U.#..0...H.IM.~|
000001e0  16 31 bb a3 01 d5 ac ab  6e 7b 30 19 06 03 55 1d  |.1......n{0...U.|

    assertThat(formEncode(24)).isEqualTo("%18")
    assertThat(formEncode(25)).isEqualTo("%19")
    assertThat(formEncode(26)).isEqualTo("%1A")
    assertThat(formEncode(27)).isEqualTo("%1B")
    assertThat(formEncode(28)).isEqualTo("%1C")
    assertThat(formEncode(29)).isEqualTo("%1D")
    assertThat(formEncode(30)).isEqualTo("%1E")
    assertThat(formEncode(31)).isEqualTo("%1F")

000001c0  05 07 03 02 30 0c 06 03  55 1d 13 01 01 ff 04 02  |....0...U.......|
000001d0  30 00 30 19 06 03 55 1d  0e 04 12 04 10 9f 91 16  |0.0...U.........|
000001e0  1f 43 43 3e 49 a6 de 6d  b6 80 d7 9f 60 30 1b 06  |.CC>I..m....`0..|
000001f0  03 55 1d 23 04 14 30 12  80 10 48 13 49 4d 13 7e  |.U.#..0...H.IM.~|
00000200  16 31 bb a3 01 d5 ac ab  6e 7b 30 19 06 03 55 1d  |.1......n{0...U.|

000001a0  05 07 03 02 30 0c 06 03  55 1d 13 01 01 ff 04 02  |....0...U.......|
000001b0  30 00 30 19 06 03 55 1d  0e 04 12 04 10 9f 91 16  |0.0...U.........|
000001c0  1f 43 43 3e 49 a6 de 6d  b6 80 d7 9f 60 30 1b 06  |.CC>I..m....`0..|
000001d0  03 55 1d 23 04 14 30 12  80 10 48 13 49 4d 13 7e  |.U.#..0...H.IM.~|
000001e0  16 31 bb a3 01 d5 ac ab  6e 7b 30 19 06 03 55 1d  |.1......n{0...U.|