40 lines
1.1 KiB
Plaintext
40 lines
1.1 KiB
Plaintext
|
One of our tests wasn't passing and we were debugging and
|
||
|
|
debugging only to be left scratching our heads.
|
||
|
|
|
||
|
|
It turns out that labels in RDATA are terminated by RLENGTH,
|
||
|
|
not by null (as most labels are), but since generally CLASS
|
||
|
|
begins with 0x0001, which looks like a null terminator... in
|
||
|
|
almost every case, it tooks us forever to figure it out.
|
||
|
|
|
||
|
|
|
||
|
|
# HEADER
|
||
|
|
0000000 25 4f 81 80 00 01 00 02 00 00 00 00
|
||
|
|
|
||
|
|
|
||
|
|
# NAME
|
||
|
|
03 61 6f 6c
|
||
|
|
0000010 03 63 6f 6d 00
|
||
|
|
00 10 00 01 c0 0c
|
||
|
|
# TYPE TXT is 16 (0x0010)
|
||
|
|
00 10
|
||
|
|
# CLASS IN is 1 (0x0001)
|
||
|
|
00 01
|
||
|
|
# TTL
|
||
|
|
00
|
||
|
|
0000020 00 07 86
|
||
|
|
# RDLENGTH
|
||
|
|
00 1f
|
||
|
|
# DATA
|
||
|
|
1e 73 70 66 32 2e 30 2f 70 72 61
|
||
|
|
0000030 20 70 74 72 3a 6d 78 2e 61 6f 6c 2e 63 6f 6d 20
|
||
|
|
0000040 3f 61 6c 6c
|
||
|
|
# NOT NULL TERMINATED!!
|
||
|
|
|
||
|
|
# NEXT RECORD
|
||
|
|
|
||
|
|
c0 0c
|
||
|
|
00 10 00 01 00 00 07 86 00 1b
|
||
|
|
0000050 1a 76 3d 73 70 66 31 20 70 74 72 3a 6d 78 2e 61
|
||
|
|
0000060 6f 6c 2e 63 6f 6d 20 3f 61 6c 6c
|
||
|
|
000006b
|