FTPAPI failing to rename a file

Hi All

We are using Scott Klement's FTPAPI as the foundation for a generic routine to retrieve CSV files and after working perfectly for months we're now experiencing a strange problem that appears to do with file sizes.

The process we have in place will retrieve a file and then use the FTP_Rename procedure to append a '.done' to the name before it calls a validation routine. If any errors are detected in the file then the file is renamed a second time and the '.done' replaced with '.error'. This process has worked since it was introduced, however, while testing a new interface a colleague is having the problem where the first rename is successful, however the second fails.

I have debugged the FTP_Rename procedure and at the point the SendLine procedure is called for the RNFR command a -1 is returned. The joblog, however, doesn't record any information other than showing the RNFR command that was sent and the usual "350 Pending further information" is not displayed. Stepping through the SendLine and subsequent tsend procedures shows a return code of -1 being returned by the send() procedure.

The file is 28,854KB in size and contains 51,136 records, but if I reduce the number of records in the file it will rename successfully which makes me think it's size related. However, as the initial rename works successfully I wonder how this can be the case. Has anybody using the FTPAPI come across a similar thing before or do you know if there is any limitation with the send() function? I'm struggling to find documentation to the send() function so any advice would be gratefully received.

Thanks in advance
Jonathan

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