#1 Internal "unknown exception" when communicating with clients

[Craig Carey]

I report this following crashing in TK4 1.5.
I am using it in Windows 2003 (without SP1), on an AMD
Duron CPU.

$1 is the name of the file.

** 16:49: SXRecv: Server source response; Count=1,
Dropped=0, PossibleSources=1, File="$1"
** 16:50: SXSend: Client source request;
64.69.32.161 'http://emule-project.net' (MLdonkey
v2.7.1,Connected/None/None), File="$1"
** 16:51: Download session started. User:
64.69.32.161 'http://emule-project.net' (MLdonkey
v2.7.1,OnQueue/None/None) in SetDownloadState(). New
State: 0
** 16:52: Server, Sendlist: Packet size:1319
** 16:54: Error: Unknown exception c0000005 in
CClientReqSocket::PacketReceived at 0x0065f92f;
protocol=eDonkey opcode=OP_SENDINGPART size=10264;
Client=64.69.32.161 'http://emule-project.net'
(MLdonkey v2.7.1,Downloading/None/None)
** 16:54: Download session ended: Unknown Exception
User: 64.69.32.161 'http://emule-project.net'
(MLdonkey v2.7.1,Downloading/None/None) in
SetDownloadState(). New State: 12, Length: 2 secs,
Transferred: 20.00 KB.
** 16:55: SXRecv: Client source request;
4707916@193.138.230.238 (190.6.3.54) 'http://emule-
project.net' (eMule v0.47a,None/None/None),
File="Mozart - Una donna a quindici anni, (Soprano -
Kathleen Battle)[mp3].mp3"
** 16:56: SXRecv: Server source response; Count=39,
Dropped=0, PossibleSources=39, File="$1"
** 16:58: Download session started. User:
85.118.41.8 'http://www.emule-project.org' (MLdonkey
v0.30,OnQueue/None/None) in SetDownloadState(). New
State: 0
** 16:59: Download session started. User:
85.118.41.88 'http://www.emule-project.org' (MLdonkey
v0.30,OnQueue/None/None) in SetDownloadState(). New
State: 0
** 16:59: Error: Unknown exception c0000005 in
CClientReqSocket::PacketReceived at 0x0065f92f;
protocol=eDonkey opcode=OP_ACCEPTUPLOADREQ size=0;
Client=85.118.41.88 'http://www.emule-project.org'
(MLdonkey v0.30,Downloading/None/None)
** 16:59: Download session ended: Unknown Exception
User: 85.118.41.88 'http://www.emule-project.org'
(MLdonkey v0.30,Downloading/None/None) in
SetDownloadState(). New State: 12, Length: 0 secs,
Transferred: 0 Bytes.
** 16:59: Download session started. User:
85.118.41.102 'http://www.emule-project.org' (MLdonkey
v0.30,OnQueue/None/None) in SetDownloadState(). New
State: 0
** 16:59: Error: Unknown exception c0000005 in
CClientReqSocket::PacketReceived at 0x0065f92f;
protocol=eDonkey opcode=OP_ACCEPTUPLOADREQ size=0;
Client=85.118.41.102 'http://www.emule-project.org'
(MLdonkey v0.30,Downloading/None/None)
** 16:59: Download session ended: Unknown Exception
User: 85.118.41.102 'http://www.emule-project.org'
(MLdonkey v0.30,Downloading/None/None) in
SetDownloadState(). New State: 12, Length: 0 secs,
Transferred: 0 Bytes.
** 16:59: Download session started. User:
85.118.41.2 'http://www.emule-project.org' (MLdonkey
v0.30,OnQueue/None/None) in SetDownloadState(). New
State: 0
** 16:59: Error: Unknown exception c0000005 in
CClientReqSocket::PacketReceived at 0x0065f92f;
protocol=eDonkey opcode=OP_ACCEPTUPLOADREQ size=0;
Client=85.118.41.2 'http://www.emule-project.org'
(MLdonkey v0.30,Downloading/None/None)
** 16:59: Download session ended: Unknown Exception
User: 85.118.41.2 'http://www.emule-project.org'
(MLdonkey v0.30,Downloading/None/None) in
SetDownloadState(). New State: 12, Length: 0 secs,
Transferred: 0 Bytes.

Altogether about 100 lines of the crashes shown above.

I a suspicion that the server withholds information
about sources. TK4 seems less affected, but it could
be only favouritism by the server software. I can't
measure the speed of TK4 because of the huge effect of
the possibly capricious server, and the bug above
might be corrected. It may take me 2 months to get the
speed testing done credibly since I'd probably write a
proxy and make TK4 and others, emulate aMule, or
whatever, or Snake (which is one of the main
competitors).

Your document seem to not contemplate that a bug
report would appear.

Craig Carey. Auckland, New Zealand
research@ijs.co.nz
UTC 13:48 Mon 27 March 2006