I am not sure about libcurl,

the C function setsockopt with SO_KEEPALIVE could work.
or change to a different protocol.

good reasons for that are:
 Security the password is sent unencrypted through the network.
 Firewalls (two channel/multichannel protocols in general have trouble
 during long transfers)

ftps (ftp over ssl) is not really an option because of the same firewalls
the firewall looks into the controlstream to lookup what extra ports
to open and with ftps that stream should be encrypted.

maybe use https post/put or scp for this kind of transfers.

Kind regards,

Nico Baggus
-----------------------------------------------------------------
ATTENTION:
The information in this electronic mail message is private and
confidential, and only intended for the addressee. Should you
receive this message by mistake, you are hereby notified that
any disclosure, reproduction, distribution or use of this
message is strictly prohibited. Please inform the sender by
reply transmission and delete the message without copying or
opening it.

Messages and attachments are scanned for all viruses known.
If this message contains password-protected attachments, the
files have NOT been scanned for viruses by the ING mail domain.
Always scan attachments before opening them.
-----------------------------------------------------------------
Received on 2006-09-12