jakarta/commons.net

From:

Christopher Smith <csmith@mclellanfundsREMOVE.com>

Newsgroups:

comp.lang.java.help

Date:

Tue, 05 Sep 2006 00:32:26 -0500

Message-ID:

<Xns9835FAB12FC0csmithmclellanfundsc@216.196.97.142>

I'm having a devil of a time getting the jakarta ftp lib to work
correctly.

The problem seems to be that the server I want to download to is behind a
firewall. I'm setting the mode to PASV via the command ftp.enterLocalMode
() but it's not working. Here's a snippet and the resulting output.
Anyone know of any problems that are specific to Jakarta?

< begin snippet >
// setup the ftp connection
                FTPClient ftp = new FTPClient ();
                ftp.connect (src);
                ftp.login ("xxxx","xxxx");

                ftp.setRemoteVerificationEnabled(false);
         System.out.println("..remote verify off");
                System.out.println ("FTP: Connected to " + src +".");
                System.out.print (ftp.getReplyString ());
                ftp.enterLocalPassiveMode();
                System.out.print (ftp.getReplyString ());
                System.out.println (ftp.getStatus ());
                System.out.println(ftp.getPassiveHost());
                System.out.println(ftp.getPassivePort());

                InputStreamReader isr = null;
                try {
                    isr = new InputStreamReader (ftp.retrieveFileStream
         ("xxxx.csv"));
                    boolean success = ftp.completePendingCommand();
                } catch (FTPConnectionClosedException e){
                    System.out.print (ftp.getReplyString ());
                    e.printStackTrace();
                } catch (IOException e) {
                    System.out.print (ftp.getReplyString ());
                    e.printStackTrace();
                } catch (Exception e) {
                    System.out.print (ftp.getReplyString ());
                    e.printStackTrace();
                }

< end snippet>

< begin output >
Beginning timestamp Tue Sep 05 01:23:30 EDT 2006
...remote verify off
FTP: Connected to XXX.XXX.com.
200 Switching to ASCII mode.
200 Switching to ASCII mode.
211-FTP server status:
     Connected to XXX.XXX.XXX.X
     Logged in as ftpsecure
     TYPE: ASCII
     No session bandwidth limit
     Session timeout in seconds is 300
     Control connection is plain text
     Data connections will be plain text
     At session startup, client count was 1
     vsFTPd 2.0.1 - secure, fast, stable
211 End of status

null <<< notice that it's not returning the passive host address
-1 <<< or the port!

It ultimately times out.

Any ideas?