[jcifs] error

[Michael B. Allen]

On Tue, 20 Aug 2002 09:47:11 -0400
"Anish Acharya" <anish.acharya at casero.com> wrote:

> Hi everyone.  I seem to be getting the following exception when scanning
> some shared hosts.  Has anyone run into this before?  

Chances  are this is one particular host that is doing this. Find out which
one  and  then  run one of the examples (like Exists) on it to see what, if
anything,  is  successfully  getting  through  (a really persistant crawler
might  do  this automatically). I think you'll find that jCIFS is sending a
legitimate  request  but  the  server  is  just  closing the socket rudely.
Probably  some  very  unsophisticated  non-windows server (like an advanced
super-printer  that  has  a  built-in  SMB  server) without support for RAP
functions or it's firewalled, etc.

When  scanning  large WANs you will see quite a bit of stuff like this. You
should catch these *inside* your loop, print it or log it, and move on.

> 
> Thanks,
> 
> -Anish
> 
> Aug 20 09:42:52.895 - exception reading from socket input
> java.net.SocketException: socket closed
>         at java.net.SocketInputStream.socketRead0(Native Method)
>         at java.net.SocketInputStream.read(Unknown Source)
>         at
> jcifs.netbios.SessionServicePacket.readPacketType(SessionServicePacke
> t.java:68)
>         at
> jcifs.netbios.SocketInputStream.read(SocketInputStream.java:73)
>         at
> jcifs.netbios.SocketInputStream.read(SocketInputStream.java:39)
>         at java.io.FilterInputStream.read(Unknown Source)
>         at java.io.PushbackInputStream.read(Unknown Source)
>         at jcifs.smb.SmbTransport.run(SmbTransport.java:303)
>         at java.lang.Thread.run(Unknown Source)
> b4 while
> 
> 
> -----
> 
> The information contained in this message is proprietary of Casero Inc.,
> protected from disclosure, and may be privileged. The information is
> intended to be conveyed only to the designated recipient(s) of the
> message. If the reader of this message is not the intended recipient,
> you are hereby notified that any dissemination, use, distribution or
> copying of this communication is strictly prohibited and may be
> unlawful. If you have received this communication in error, please
> notify us immediately by replying to the message and deleting it from
> your computer. Thank you.
> 


-- 
A  program should be written to model the concepts of the task it
performs rather than the physical world or a process because this
maximizes  the  potential  for it to be applied to tasks that are
conceptually  similar and more importantly to tasks that have not
yet been conceived.