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From "Marco Campelo (JIRA)" <j...@apache.org>
Subject [jira] Updated: (NET-91) commons.net.FTPClient hangs on disconnect or logout
Date Wed, 03 Jan 2007 16:21:27 GMT

     [ https://issues.apache.org/jira/browse/NET-91?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Marco Campelo updated NET-91:
-----------------------------

    Affects Version/s: 1.4 Final

> commons.net.FTPClient hangs on disconnect or logout
> ---------------------------------------------------
>
>                 Key: NET-91
>                 URL: https://issues.apache.org/jira/browse/NET-91
>             Project: Commons Net
>          Issue Type: Bug
>    Affects Versions: 1.4 Final
>         Environment: Operating System: All
> Platform: PC
>            Reporter: Joe
>
> By repetitively calling 
>         try { 
>             
>             // connect and login to the FTP server
>             ftpc.connect(getPropertyFromEnv("FTP_SERVER"));
>             
>             ftpc.login(getPropertyFromEnv("USERNAME"), getPropertyFromEnv
> ("PASSWORD"));   //technically we may have to break this into 2 blocks see 
> examples
>             // After connection attempt, check the reply code to verify success.
>             reply = ftpc.getReplyCode();
>             response = ftpc.getReplyString();
>             if(!FTPReply.isPositiveCompletion(reply)) {
>                 System.err.println("FTP server refused connection or login.");
>                 killFTP(ftpc);
>                 ftpc = null;
>             }
>         } catch(IOException e) {
>             System.err.println("Can't connect or login to server, reply 
> = "+reply+ " response = " + response);
>             killFTP(ftpc);
>             ftpc = null;
>         }
> and then
>         if (ftpc.isConnected()) {
>             try {
>                 ftpc.logout();
>             } catch (Exception e) { // do nothing 
>                 System.out.println("Exception in ftpc.logout()");
>             }
>             try {
>                 ftpc.disconnect();
>             } catch (Exception e) { // do nothing 
>                 System.out.println("Exception in ftpc.disconnect()");
>             }
>         }
> one of the two bottom calls hangs and I'm assuming that it's in an infinite
> loop waiting for something that the server isn't sending.  We try and hook to
> a Linux FTP server, and Windows FTP server and 99.99 % of the time it works, 
> but every once in a while, it hangs and we have to kill the FTP daemon.  After 
> doing that everything works again!!!

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