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https://issues.apache.org/jira/browse/NET-169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12553306
]
Peter Jodeleit commented on NET-169:
------------------------------------
I can reproduce the problem against a "ProFTPD 1.2.10 Server".
I tracked and suspect the method
"org.apache.commons.net.ftp.FTPClient#initiateListParsing(FTPFileEntryParser,
String)" (is called by
"org.apache.commons.net.ftp.FTPClient#listFiles(String)").
The suspected code is:
if ((socket = _openDataConnection_(FTPCommand.LIST, pathname)) == null)
{
return engine; // we end up here!
}
(see
http://commons.apache.org/net/xref/org/apache/commons/net/ftp/FTPClient.html#2392)
If i set a breakpoint at this line "getReplyString()" delivers "200 PORT
command successful".
The trace of my use case (delete a directory recursivly) with logging turned on:
TRACE 19.12.2007 12:02:41.621
(de.espirit.firstspirit.io.FtpFileSystemOperations): SENT: LIST LIST
/home/tomcat/webapps/intranet/test
TRACE 19.12.2007 12:02:41.621
(de.espirit.firstspirit.io.FtpFileSystemOperations): RECEIVED: 200 PORT command
successful
DEBUG 19.12.2007 12:02:41.621
(de.espirit.firstspirit.io.FtpFileSystemOperations): no files in path
/home/tomcat/webapps/intranet/test
TRACE 19.12.2007 12:02:41.621
(de.espirit.firstspirit.io.FtpFileSystemOperations): SENT: RMD RMD
/home/tomcat/webapps/intranet/test
WARN 19.12.2007 12:02:41.621
(de.espirit.firstspirit.io.FtpFileSystemOperations): RECEIVED: 425 Unable to
build data connection: Connection refused
The same RMD command on the shell:
>ftp XXXXX
Verbindung mit corona.e-spirit.de wurde hergestellt.
220 ProFTPD 1.2.10 Server (XXXXX) [XXX.XXX.XXX.XXX]
Benutzer (XXXXX:(none)): xxxxxx
331 Password required for xxxxxx.
Kennwort:
230 User xxxxxx logged in.
ftp> rmdir /home/tomcat/webapps/intranet/test
550 /home/tomcat/webapps/intranet/test: Directory not empty
ftp> dir /home/tomcat/webapps/intranet/test
200 PORT command successful
150 Opening ASCII mode data connection for file list
-rw-r--r-- 1 intranetftp intranet 86 Dec 19 11:02 test.bin
226 Transfer complete.
FTP: 64d Bytes empfangen in 0,00Sekunden 68000,00KB/s
ftp>
> Cannot return files with listNames() function
> ---------------------------------------------
>
> Key: NET-169
> URL: https://issues.apache.org/jira/browse/NET-169
> Project: Commons Net
> Issue Type: Bug
> Affects Versions: 1.4
> Environment: Windows, Eclipse
> Reporter: burak ulutoprak
>
> Hi,
> I am connecting to an ftp server with my username and password. When I call
> ftpClient.listNames(); it returns 0 length string array although i am very
> sure that there are files inside.
> I also know that when I changed the ftp server to another one this function
> works. So I am assuming the server that I connected has a weird ftp server.
> When I called the function ftpClient.getSystemName() it returns UNKNOWN Type:
> L8.
> If I call ftpClient.listNames I got this exception
> org.apache.commons.net.ftp.parser.ParserInitializationException: Unknown
> parser type: UNKNOWN Type: L8
> at
> org.apache.commons.net.ftp.parser.DefaultFTPFileEntryParserFactory.createFileEntryParser(DefaultFTPFileEntryParserFactory.java:125)
> at
> org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:2362)
> at org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java:2145)
> at org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java:2192)
> I have to get the filenames from the server, so how can I solve the problem.
> Thanks for the helps.
> Burak Ulutoprak
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