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From "Konrad Garus (JIRA)" <j...@apache.org>
Subject [jira] [Created] (NET-476) FTP parser initialization from invalid line
Date Tue, 24 Jul 2012 08:12:34 GMT
Konrad Garus created NET-476:
--------------------------------

             Summary: FTP parser initialization from invalid line
                 Key: NET-476
                 URL: https://issues.apache.org/jira/browse/NET-476
             Project: Commons Net
          Issue Type: Bug
          Components: FTP
    Affects Versions: 3.1
         Environment: Ubuntu Linux 10.04 amd64, vsftpd 2.2.2
            Reporter: Konrad Garus


After upgrading from 1.4.1 to 3.1, we noticed the FTP client sometimes fails to list files.
It seems to occur intermittently, possibly when the system is under relatively high load and
does not respond immediately.

>From stacktraces, it seems like multithreading issues or trying to parse system type from
reply to another command than SYST:

{code}
Caused by: org.apache.commons.net.ftp.parser.ParserInitializationException: Unknown parser
type: PORT command successful. Consider using PASV.
        at org.apache.commons.net.ftp.parser.DefaultFTPFileEntryParserFactory.createFileEntryParser(DefaultFTPFileEntryParserFactory.java:118)
        at org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:2359)
        at org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java:2142)
        at 
{code}

{code}
Caused by: org.apache.commons.net.ftp.parser.ParserInitializationException: Unknown parser
type: Directory send OK.
        at org.apache.commons.net.ftp.parser.DefaultFTPFileEntryParserFactory.createFileEntryParser(DefaultFTPFileEntryParserFactory.java:118)
        at org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:2359)
        at org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java:2142)
        at 
{code}

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