Extremely slow ftp upload

[mlt1234]

I am suddenly experiencing extremely slow upload times using the below ftp client written en java:

Code: Select all

    SSLContext sslContext = createSSLContext();
    ftpsClient = new FTPSClient(sslContext);
    ftpsClient.addProtocolCommandListener(listener);


    ftpsClient.connect(host, PORT);
    int reply = ftpsClient.getReplyCode();
    if (FTPReply.isPositiveCompletion(reply)) {
      // Login
      boolean login = ftpsClient.login(user, password);
      if (login) {
        // Set protection buffer size
        // ftpsClient.execPBSZ(0);
        // Set data channel protection to private
        ftpsClient.execPROT("P");
        // Enter local passive mode
        ftpsClient.enterLocalPassiveMode();
      } else {
        log.error("FTP login failed");
      }
    } else {
      log.error("FTP connect to host failed");
    }


    BufferedInputStream bis = new BufferedInputStream(new FileInputStream(src));
    ftpsClient.setFileType(FTP.BINARY_FILE_TYPE, FTP.BINARY_FILE_TYPE);
    ftpsClient.setFileTransferMode(FTP.BINARY_FILE_TYPE);
    boolean storeFile = ftpsClient.storeFile(dest, bis);

It takes around 10 hours to upload two files approx. 100 mb each. Any ideas what might be causing this?

[botg]

Logs from the server and ideally the client as well would be nice.

[chrisco]

I was having a similar problem when using Java 7 on both linux and windows. Not sure what causes it but I know what fixes it!

You need to set buffer size to 0 and then FTPClient works at normal speed:

ftpClient.setBufferSize(0);

I found this trick on a stack overflow page.

EDIT:

That fix was a workaround. Apache have actually fixed the problem properly in the Commons Net 3.3 snapshot.

[VirtualTourGuy]

How do I find the place on either my computer or in an application which allows me to edit ftpClient.setBufferSize(0).

I have searched my computer and tried running that request from the command prompt, however, I dont seem to be able to find it.

Thank You

[boco]

You cannot, that thread is about a self-coded Java client. As you have a different problem please open your own topic. Thanks.

[technodealio1]

This is why I use a host for all this stuff. Not because personal FTP is insufficient, but because I'm too lazy to figure these sort of things out. I use hostgator for my deal website and they have been great. Very good 24/7 tech support too.