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https://issues.apache.org/jira/browse/NET-568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14318937#comment-14318937
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Sebb commented on NET-568:
--------------------------
The FTPClientExample code includes an example of calling enterLocalPassiveMode
[1]
This is done AFTER the connect [2] has occurred.
Also the Javadoc for enterLocalPassiveMode [3] says that connect resets the
mode.
The code is working as documented.
[1]
http://commons.apache.org/proper/commons-net/xref/examples/ftp/FTPClientExample.html#324
[2]
http://commons.apache.org/proper/commons-net/xref/examples/ftp/FTPClientExample.html#263
[3]
http://commons.apache.org/proper/commons-net/javadocs/api-3.3/org/apache/commons/net/ftp/FTPClient.html#enterLocalPassiveMode()
> Order of client configuration and connection is ambiguous
> ---------------------------------------------------------
>
> Key: NET-568
> URL: https://issues.apache.org/jira/browse/NET-568
> Project: Commons Net
> Issue Type: Bug
> Components: FTP
> Affects Versions: 3.3
> Environment: linux, java 7
> Reporter: Joseph Vychtrle
>
> Hey,
> according to the FTPClientExample client should be first configured and set
> and connection made afterwards. But if I do this :
> {code:title=FTPClient.java}
> FTPClient c = new FTPClient()
> customConf(c)
> val config = new FTPClientConfig("UNIX")
> config.setUnparseableEntries(true)
> c.configure(config)
> c.enterLocalPassiveMode() // required, otherwise firewall issues happen
> c.setDefaultTimeout(conf.ftpTimeout)
> c.addProtocolCommandListener(new PrintCommandListener(new
> PrintWriter(System.out), true))
> c.connect(conf.ftpHost)
> {code}
> Then it basically ends up this way :
> {code}
> 230 Anonymous access granted, restrictions apply
> PORT 192,168,1,100,177,38
> 500 Illegal PORT command
> {code}
> But if I call connect() before all the client setting including
> enterLocalPassiveMode, then it works as expected.
> {code}
> 230 Anonymous access granted, restrictions apply
> PASV
> 227 Entering Passive Mode (80,251,0,59,175,235).
> RETR welcome.msg
> 150 Opening ASCII mode data connection for welcome.msg (321 bytes)
> 226 Transfer complete
> PASV
> 227 Entering Passive Mode (80,251,0,59,167,178).
> RETR welcome.msg
> 150 Opening ASCII mode data connection for welcome.msg (321 bytes)
> 226 Transfer complete
> PASV
> 227 Entering Passive Mode (80,251,0,59,174,58).
> RETR welcome.msg
> 150 Opening ASCII mode data connection for welcome.msg (321 bytes)
> 226 Transfer complete
> {code}
> But in the FTPClientExample the connect() occurs at the end.
> It is thread-safe, running within a single thread... What is going on here?
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