How to diagnose problems

edtFTPj/PRO has a rich API and provides complex capabilities. There are a wide variety of FTP, FTPS and SFTP servers in existence, which may or may not implement the relevant standards.

If difficulties are experienced in connecting to a server or performing operations, a number of steps can be taken to try to resolve the problem.

1. Ensure that you can connect using a standalone FTP application such as FileZilla. If you cannot connect with FileZilla, it is likely that other clients (such as this one) will also experience difficulties connecting. Make sure you select the correct protocol.

2. For SFTP, alternatively (or also) use a command-line ssh client to connect to the server using the authentication method of your choice, and ensure that this works. ssh -vvv can be used to provide helpful debugging information.

3. If you can connect using FileZilla, try using the appropriate How To example (with suitable settings) provided with the distribution.

4. Generate a log file exhibiting the error with the level set to ALL. This may provide you (and us) with a clue to the problem.

6. Search the EDT Forum to see if the problem has been reported and a resolution posted. The forum is fully searchable and contains advice and answers to many issues that developers have faced when using this library.

7. Consult the product's revision history to see if your problem has been resolved in a later version of the software. If your support agreement is current, download the latest version (or request it from support@enterprisedt.com), even if your problem is not listed. If you are unable to resolve the problem and you have a current support agreement, you may need to contact EDT Support. We will do our best to resolve the problem, including issuing patches if necessary. Note that Lifetime Subscriptions always have current support agreements.

Customers and developers trialing a product may e-mail support at support@enterprisedt.com. When emailing support with a problem, always include the following:

a stack trace (if an exception is being thrown)
the section of the log file that illustrates the problem (see How to set up logging)
the initial part of the log file that displays versioning information and your classpath
the type of server you are accessing (include the version if possible)
the version of edtFTPj/PRO you are using, if that is not shown in the log file

Please include as much information as possible; it will save us emailing you to ask for it.