for some reason, libcurl ftps expects data connection to be encrypted without telling PROT P, but FileZilla expects the contrary.
the technic is to use simple ftp:// then upgrade with PROT P, and there it works.
in fact from what I could read here and there, implicit protection (ftps) is rather obsolete, however, like you, I would have found that cool to have this works directly [one way could be to send PROT P unconditionnaly in ftps mode, it would not be understood by very old ftp implemtentations other SSL, and would be by newer ones, which consequently would make the server and libcurl expect the same thing]

Armel
  ----- Original Message -----
  From: kuriakose
  To: curl-library_at_cool.haxx.se
  Sent: Tuesday, October 10, 2006 7:01 AM
  Subject: ftps using curl to filezilla server

  Hi,

  While connecting to filezilla server 0.9.19 through curl using ftps , iam getting the following error .

  I am setting the CAPATH and CAINFO.

  Please help!!!

  Doing the SSL/TLS handshake on the data stream

  successfully set certificate verify locations:

    CAfile: certificate.crt

  CApath: .

  SSL re-using session ID

  error:1408F10B:SSL routines:SSL3_GET_RECORD:wrong version number

  DO-MORE phase ends

  Connection #0 to host localhost left intact

  Closing connection #0

  ---------------------------------------------------------------------------------------
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Received on 2006-10-10