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https://issues.apache.org/jira/browse/FTPSERVER-110?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12537996
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Rico Neubauer commented on FTPSERVER-110:
-----------------------------------------
No, there was no PASV sent.
I will attach a test which tests all affected commands.
> FTP returns 150 instead of code/message for "port is disabled"
> --------------------------------------------------------------
>
> Key: FTPSERVER-110
> URL: https://issues.apache.org/jira/browse/FTPSERVER-110
> Project: FtpServer
> Issue Type: Bug
> Components: Core
> Reporter: Rico Neubauer
> Attachments: ActiveModeReplyTest.java, apache-ftpserver-110-patch.txt
>
>
> If using pasive mode and active mode is disabled the "PORT" command is
> answered with "510 port is disabled".
> However if you go on with the next command ("LIST"), then the FTPServer
> answers "150 ..." instead of "510 PORT command disabled before LIST") or
> some similiar descriptive error. Also the it is tried to open the active port
> and a 425 is sent:
> 12:18:41,758 INFO [MinaFtpProtocolHandler] [/10.0.103.111:56757] RECEIVED:
> LIST
> 12:18:41,758 INFO [MinaFtpProtocolHandler] [/10.0.103.111:56757] WRITE: 150
> File status okay; about to open data connection.
> 12:18:41,773 WARN [IODataConnectionFactory] FtpDataConnection.getDataSocket()
> java.lang.NullPointerException
> at
> org.apache.ftpserver.IODataConnectionFactory.createDataSocket(IODataConnectionFactory.java:235)
> at
> org.apache.ftpserver.IODataConnectionFactory.openConnection(IODataConnectionFactory.java:197)
> at org.apache.ftpserver.command.LIST.execute(LIST.java:78)
> at
> org.apache.ftpserver.listener.FtpProtocolHandler.service(FtpProtocolHandler.java:195)
> at
> org.apache.ftpserver.listener.FtpProtocolHandler.onRequestReceived(FtpProtocolHandler.java:122)
> at
> org.apache.ftpserver.listener.mina.MinaFtpProtocolHandler.messageReceived(MinaFtpProtocolHandler.java:106)
> at
> org.apache.mina.common.support.AbstractIoFilterChain$TailFilter.messageReceived(AbstractIoFilterChain.java:703)
> at
> org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(AbstractIoFilterChain.java:362)
> at
> org.apache.mina.common.support.AbstractIoFilterChain.access$1200(AbstractIoFilterChain.java:54)
> at
> org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceived(AbstractIoFilterChain.java:800)
> at
> org.apache.mina.filter.executor.ExecutorFilter.processEvent(ExecutorFilter.java:243)
> at
> org.apache.mina.filter.executor.ExecutorFilter$ProcessEventsRunnable.run(ExecutorFilter.java:305)
> at
> edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
> at
> edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
> at java.lang.Thread.run(Thread.java:595)
> 12:18:41,773 INFO [MinaFtpProtocolHandler] [/10.0.103.111:56757] SENT: 150
> File status okay; about to open data connection.
> 12:18:41,773 INFO [MinaFtpProtocolHandler] [/10.0.103.111:56757] WRITE: 425
> Can't open data connection.
> 12:18:41,773 INFO [MinaFtpProtocolHandler] [/10.0.103.111:56757] SENT: 425
> Can't open data connection.
> 12:19:00,664 INFO [MinaFtpProtocolHandler] [/10.0.103.111:56757] RECEIVED:
> PWD
> 12:19:00,664 INFO [MinaFtpProtocolHandler] [/10.0.103.111:56757] WRITE: 257
> "/" is current directory.
> 12:19:00,664 INFO [MinaFtpProtocolHandler] [/10.0.103.111:56757] SENT: 257
> "/" is current directory.
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