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From Rory Winston <rwins...@eircom.net>
Subject Re: [NET] listFiles throws SocketException: Connection reset even in passive mode
Date Tue, 02 Jan 2007 22:36:42 GMT
Hi Cyril

If you are running Java 1.5 or later, you can try the latest snapshot of 
commons-net 2.0 and see if that fixes the issue:

http://people.apache.org/~rwinston/commons-net-2.0/commons-net-2.0.0-SNAPSHOT.jar

Rory

Cyril Bouteille wrote:
> Thanks for your reply Mark.
> This exception occurs on a simple 'ls' (listFiles()) in a directory 
> with less than 100 files. This command returns within a couple seconds 
> @ ftp cli. But the commons.net program can hang for hours and then 
> exit with this "connection reset" exception.
> We do use the same FTP server in dev and prod. It's one from the USPS. 
> Only the client network and machine the commons.net program runs on is 
> different.
> It feels like a network connectivity issue, but I don't understand how 
> the ftp cli and commons.net library behave differently in a way 
> explaining this...
> Any idea?
>
> Mark Fortner wrote:
>> Sounds like your production environment has different FTP socket 
>> timeout settings.  Does this exception occur with a large file in 
>> your production environment?  If so, is that same file available in 
>> your dev environment?
>>
>> You may want to compare the settings on FTP servers and make sure 
>> they're the same.
>>
>> Hope this helps,
>>
>> Mark
>>
>> PS Don't forget to prefix the subject lines of your email with 
>> "[VFS]" as this list is shared by a lot of different groups.
>>
>> On Friday, December 29, 2006, at 07:57 PM, Cyril Bouteille wrote:
>>
>>> Hello,
>>> I've a Java 1.5 program retrieving files over ftp using net 1.4.1, 
>>> which works fine in our dev environment, but throws the exception 
>>> below in our production environment on the listFiles() call.
>>> 1) I am calling enterLocalPassiveMode() to use passive mode, and
>>> 2) I'm able to list files with the ftp cli client on the same 
>>> production machine that the Java program is running on, so network 
>>> ACLs seem ok
>>> Is there anything else I am missing?
>>> I'm at loss on how to resolve this issue and would appreciate your 
>>> input.
>>> Thanks,
>>>
>>> SEVERE 16:13:14 MailScanJob.runJob: Exception 
>>> java.net.SocketException: Connection reset
>>> java.net.SocketException: Connection reset
>>>     at java.net.SocketInputStream.read(SocketInputStream.java:168)
>>>     at 
>>> sun.nio.cs.StreamDecoder$CharsetSD.readBytes(StreamDecoder.java:411)
>>>     at 
>>> sun.nio.cs.StreamDecoder$CharsetSD.implRead(StreamDecoder.java:453)
>>>     at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:183)
>>>     at java.io.InputStreamReader.read(InputStreamReader.java:167)
>>>     at java.io.BufferedReader.fill(BufferedReader.java:136)
>>>     at java.io.BufferedReader.readLine(BufferedReader.java:299)
>>>     at java.io.BufferedReader.readLine(BufferedReader.java:362)
>>>     at 
>>> org.apache.commons.net.ftp.FTPFileEntryParserImpl.readNextEntry(FTPFileEntryParserImpl.java:95)

>>>
>>>     at 
>>> org.apache.commons.net.ftp.FTPListParseEngine.readStream(FTPListParseEngine.java:150)

>>>
>>>     at 
>>> org.apache.commons.net.ftp.FTPListParseEngine.readServerList(FTPListParseEngine.java:98)

>>>
>>>     at 
>>> org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:2396)

>>>
>>>     at 
>>> org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:2364)

>>>
>>>     at 
>>> org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java:2141)
>>>     at 
>>> org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java:2188)
>>>     at 
>>> peerflix.job.trade.MailScanJob.processMailScans(MailScanJob.java:136)
>>>     at peerflix.job.trade.MailScanJob.runJob(MailScanJob.java:87)
>>>     at peerflix.job.PfxJob.main(PfxJob.java:97)
>>>
>>>
>
>
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