YADE does not transfer files with file names that contain diacritics such as é

Current Situation

• If a file name contains a diacritic character such as é and the YADE file_spec parameter of a transfer matches the file name then an error can occur:

  2017-10-20 14:17:56.557+0200 [ERROR]  (Task NPL/Job_FTP_A_NAS_NPL:77488) COM-80020009  Ausnahmefehler aufgetreten. [step] [] [Z-JAVA-105  Java exception com.sos.JSHelper.Exceptions.JobSchedulerException: SOSVfs_E_226: .. file '/home/test/input/test_?.txt' does not exist., method=spooler_process()Z [], in Remote_module_instance_server::step], method=call
  

• This happens for SFTP servers that do not return file names with an UTF-8 encoding but with individual encodings such as ISO-8859-1.

Desired Behaviour

• File names that contain characters in ISO-8859-1 encoding should be transferred.

Maintainer Notes

• The YADE client works as designed as it expects an SFTP server to provide file names in UTF-8 if not otherwise requested by a client. This behavior is specified with draft-ietf-secsh-filexfer-13 - SSH File Transfer Protocol..
• This problem has not been reported for Unix-based SFTP servers that usually return file names in UTF-8. For Windows-based SFTP servers the respective settings to return UTF-8 file names should be activated.