Invalid port number from FTP client

[Satish Kaveti <Sa...@sick.com>]

I am working on application in which six FTP clients are sending images to 
FtpServer. Occasionally, the client sends a invalid PORT number (PORT 
0,0,0,0,0,0). The FtpServer server accepts the port number and starts 
processing the following STOR command. It sends 150 response. But during 
the call to openConnection inside STOR.execute( ) an exception is caught 
and the server responds with code 425. It is causing the FTP client to 
hang. Is it possible to detect invalid port number and respond with 
response 451 ?

Thanks

Satish Kaveti
Software Engineer

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SICK, Inc.
Automatic Identification Solutions
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800 Technology Center Drive 
Suite 6
Stoughton, MA  02072 USA 
Direct: 781.302.2525
Phone: 781.302.2500
Fax: 781.828.3150
http://www.sickusa.com

Re: Invalid port number from FTP client

[Niklas Gustavsson <ni...@protocol7.com>]

On Mon, Nov 23, 2009 at 6:23 PM, Satish Kaveti <Sa...@sick.com> wrote:
> I am working on application in which six FTP clients are sending images to
> FtpServer. Occasionally, the client sends a invalid PORT number (PORT
> 0,0,0,0,0,0). The FtpServer server accepts the port number and starts
> processing the following STOR command. It sends 150 response. But during
> the call to openConnection inside STOR.execute( ) an exception is caught
> and the server responds with code 425. It is causing the FTP client to
> hang. Is it possible to detect invalid port number and respond with
> response 451 ?

Yes, I think we should fix this (and you should probably get that
client fixed as well :-). Could you please add a JIRA issue for this
and we'll have a look at it?

/niklas