AX2009 FTPWebRequest in Batch

Hello,

I made a batch class to check an FTP for files, download them and delete them on the FTP.

When I run it manually (not in batch) it works perfectly and downloads all files in the FTP and deletes them when the downloading is done.

The problem starts when i try to run this in batch, I tried both serverside and client batches.

Both of them give a timout error:

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Net.WebException: The operation has timed out.

  at System.Net.FtpWebRequest.CheckError()

  at System.Net.FtpWebRequest.GetResponse()

  --- End of inner exception stack trace ---

Does anyone have any experience downloading files from an FTP in batch?

I have tried setting the timeout time higher. I also tested the connection on the servers executing the batch-job and i can access the FTP. So it's not a firewall issue. I think it must be something within AX but I can't really think of anything.

this is the code (note: downloadfile and deletefile is the same code to make the connection with a differenct set_method():

    permissionSet =  new Set(Types::Class);
    files = new List(types::String);
    permissionset.add(new InteropPermission(InteropKind::DllInterop));
    permissionset.add(new InteropPermission(InteropKind::ClrInterop));
    CodeAccessPermission::assertMultiple(permissionset);
    ftpo = System.Net.WebRequest::Create(<ftp link>);
    request = ftpo;
    request.set_KeepAlive(false);
    request.set_UsePassive(false);
    request.set_UseBinary(true);
    request.set_Method("NLST");
    credential = new System.Net.NetworkCredential(<user>,<pw>);
    request.set_Credentials(credential);
    try
    {
        //first get the filelist from FTP
        response = request.GetResponse();
        reader = new System.IO.StreamReader(response.GetResponseStream());
        while(!reader.get_EndOfStream())
        {
            text = reader.ReadLine();
            files.addStart(text);
        }
        reader.Close();
        response.Close();
        CodeAccessPermission::revertAssert();
        if(files.elements() >0)
        {
            it = New ListIterator(files);
            while(it.more())
            {
                filename = it.value();
                downloadfile(filename);
                deleteFile(filename);
                it.next();
            }
        }
    }