[io] cannot upload more files with ftp

[Luca Vercelli]

Dear all,
I have a problem with FTP file upload of more than 1 file, using
storeFileStream().
I can connect to an FTP client, and I can upload 1 file. When I try to
upload a second file, the server disconnects.
Using commons-net 3.3 FTPClient. Here is a minimal Java code:

|||||   public static void main(String[] args) throws IOException {
            String host = "xxx";
            String username = "xxx";
            String password = "xxx";
            String localFile1 = "xxx";
            String localFile2 = "xxx";
            String remoteFolder = "xxx";

            FTPClient client = new FTPClient();
            client.connect(host, 21);
            client.login(username, password);
            client.enterLocalPassiveMode();
            client.setFileType(FTP.BINARY_FILE_TYPE);
            client.changeWorkingDirectory(remoteFolder);

            File localfile = new File(localFile1);
            FTPFile[] files = client.listFiles(localfile.getName());
            OutputStream os = client.storeFileStream(localfile.getName());
            FileUtils.copyFile(localfile, os);
            os.close();

            localfile = new File(localFile2);
            files = client.listFiles(localfile.getName());
            System.out.println((files == null) ? null : files.length);
            os = client.storeFileStream(localfile.getName());
            FileUtils.copyFile(localfile, os);
            os.close();

        }
|

An exception is thrown at the second storeFileStream():

Exception in thread "main" java.net.ConnectException: Connection refused
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at
java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:327)
    at
java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:193)
    at
java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:180)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:385)
    at java.net.Socket.connect(Socket.java:546)
    at
org.apache.commons.net.ftp.FTPClient._openDataConnection_(FTPClient.java:894)
    at
org.apache.commons.net.ftp.FTPClient._storeFileStream(FTPClient.java:688)
    at
org.apache.commons.net.ftp.FTPClient.__storeFileStream(FTPClient.java:679)
    at
org.apache.commons.net.ftp.FTPClient.storeFileStream(FTPClient.java:2007)
    at Test.main(Test.java:39)

|
Do you have any idea?
Thank you.

|


-- 
Luca Vercelli