The following reply was made to PR os-irix/1710; it has been noted by GNATS.
From: Marc Slemko <[EMAIL PROTECTED]>
To: Jamie Scuglia <[EMAIL PROTECTED]>
Cc: [EMAIL PROTECTED]
Subject: Re: os-irix/1710: Some image files get corrupted during transfer
Date: Tue, 20 Jan 1998 23:25:37 -0700 (MST)
On 21 Jan 1998, Jamie Scuglia wrote:
> Also check exactly where the differences lie in the files.
>
> # cmp test1.jpg test1.jpg.1
> # cmp test1.jpg.1 test1.jpg.2
> ...etc
>
> The differences all seem to occur at the same point.
and they have an ungodly number of nulls in them:
bad good
-------- -----
78017 0 212
78018 0 224
78019 0 352
78020 0 34
78021 0 175
78022 0 216
78023 0 233
78024 306 177
78049 0 102
78050 0 354
78051 0 374
78052 0 167
78053 0 33
78054 0 257
78055 0 32
[...]
Hmm. Wonder if a simple standalone test program could reproduce this...
would make it easier to convince SGI.
Ah. The corruption starts at the beginning of a packet:
23:17:39.677375 shelob.cs.monash.edu.au.http > valis.worldgate.com.1284: .
68621
:70081(1460) ack 141 win 61320 (DF)
Data: 1460 bytes
Offset Hex ASCII
0x0000 0f40 7e2a f857 0fc9 0875 8798 66e4 aa10 |[EMAIL PROTECTED]|
0x0010 7ed1 a13f ea8c a284 8f10 3062 5baf 160c |~..?......0b[...|
0x0020 9ca5 6d96 4e5b 2ff5 c748 9104 51e9 8468 |..m.N[/..H..Q..h|
0x0030 c046 2a49 2ed5 dd88 c78b e29e 11ee 4b80 |.F*I..........K.|
0x0040 23c4 1fc7 1686 eeea 0de3 9181 1d37 c108 |#............7..|
0x0050 51a4 aca9 eaa0 ad23 0695 f9b0 ca16 f0b4 |Q......#........|
0x0060 3c99 f833 1341 d853 ecf5 1899 0ea1 147a |<..3.A.S.......z|
0x0070 2636 be6d d560 011d 9668 e942 92af 3523 |&6.m.`...h.B..5#|
0f40 7e2a is:
68376 17 271
68377 100 12
68378 176 23
68379 52 112
68380 370 364
68381 127 33
68382 17 234
68383 311 262
68384 10 35
(left is corrupted, right is proper). Yea, sure looks like an IRIX bug.
Sigh.
