Bug in torrent creator in version 1.5

[WilliamKidd]

Might be related to http://forum.utorrent.com/viewtopic.php?id=4185.

1. Create a torrent, enter the announcer URL in "Trackers:" field of the "Create new .torrent" dialog without any whitespace/newlines before or after it. The result is:

0000  64 38 3A 61 6E 6E 6F 75 6E 63 65 34 38 3A 68 74   d8:announce48:ht
0010  74 70 3A 2F 2F 74 72 61 63 6B 65 72 2E 63 6F 6D   tp://tracker.com
0020  2F 61 6E 6E 6F 75 6E 63 65 2E 70 68 70 3F 70 61   /announce.php?pa
0030  73 73 5F 6B 65 79 3D 50 41 53 53 4B 45 59 31 30   ss_key=PASSKEY10
0040  3A 63 72 65 61 74 65 64 20 62 79 31 33 3A 75 54   :created by13:uT
0050  6F 72 72 65 6E 74 2F 31 35 30 30 31 33 3A 63 72   orrent/150013:cr
0060  65 61 74 69 6F 6E 20 64 61 74 65 69 31 31 34 32   eation datei1142

2. Now add two newlines after the URL and re-create the torrent. The result is:

0000  64 38 3A 61 6E 6E 6F 75 6E 63 65 34 38 3A 68 74   d8:announce48:ht
0010  74 70 3A 2F 2F 74 72 61 63 6B 65 72 2E 63 6F 6D   tp://tracker.com
0020  2F 61 6E 6E 6F 75 6E 63 65 2E 70 68 70 3F 70 61   /announce.php?pa
0030  73 73 5F 6B 65 79 3D 50 41 53 53 4B 45 59 31 33   ss_key=PASSKEY13
0040  3A 61 6E 6E 6F 75 6E 63 65 2D 6C 69 73 74 6C 6C   :announce-listll
0050  34 38 3A 68 74 74 70 3A 2F 2F 74 72 61 63 6B 65   48:http://tracke
0060  72 2E 63 6F 6D 2F 61 6E 6E 6F 75 6E 63 65 2E 70   r.com/announce.p
0070  68 70 3F 70 61 73 73 5F 6B 65 79 3D 50 41 53 53   hp?pass_key=PASS
0080  4B 45 59 65 65 31 30 3A 63 72 65 61 74 65 64 20   KEYee10:created
0090  62 79 31 33 3A 75 54 6F 72 72 65 6E 74 2F 31 35   by13:uTorrent/15
00A0  30 30 31 33 3A 63 72 65 61 74 69 6F 6E 20 64 61   0013:creation da

Note that announce-list has been added. It is superfluous because there is a single tracker URL and it is already contained in announce.

Not a big deal? Unless you happen to upload such .torrent containing your own passkey on a tracker, which modifies only announce and leaves announce-list intact

3. Add one or more spaces after the tracker URL. The result is:

0000  64 38 3A 61 6E 6E 6F 75 6E 63 65 35 31 3A 68 74   d8:announce51:ht
0010  74 70 3A 2F 2F 74 72 61 63 6B 65 72 2E 63 6F 6D   tp://tracker.com
0020  2F 61 6E 6E 6F 75 6E 63 65 2E 70 68 70 3F 70 61   /announce.php?pa
0030  73 73 5F 6B 65 79 3D 50 41 53 53 4B 45 59 20 20   ss_key=PASSKEY  
0040  20 31 30 3A 63 72 65 61 74 65 64 20 62 79 31 33    10:created by13
0050  3A 75 54 6F 72 72 65 6E 74 2F 31 35 30 30 31 33   :uTorrent/150013
0060  3A 63 72 65 61 74 69 6F 6E 20 64 61 74 65 69 31   :creation datei1

Spaces are not trimmed.

[Firon]

Ludde says #2 is by design.

#3 will be fixed.

[WilliamKidd]

What about at least a warning for #2

For example, if you put space(s) before the tracker URL, there is a warning but you can choose to continue.

[Firon]

Spaces are gonna be stripped.

If you add newlines, it makes an announce-list, intended as a way to force announce-list to get created, even with only one tracker.

[WilliamKidd]

OK. Thank you for the quick replies.

Just in case someone has time to waste: I am curious is there any real-world benefit (or special use) of having announce-list in the .torrent file?

[TooMuchTime]

#2 may be by design but it's screwing up users at my site. We reject .torrent files containing announce lists and it's gotten to be a common problem that files created with uTorrent contain them. I too can't see any reason for a single-tracker announce list.

TooMuchTime

Admin & tracker author, OiNK's Pink Palace

[Firon]

Wasn't a problem for me when I made 24 torrents in a day for Oink.

Is it really that hard to make sure there's no extra newlines? You can add a warning on the upload page if need be, or just make the tracker rewrite it to be announce

It's not gonna get changed, ludde wanted a way for people to be able to force announce-list, for whatever reason they may have.