On Tue, 10 Apr 2007, kuriakose wrote:

> The version of libcurl I am using is different in both systems
> In windows ,the libcurl version is 7.15.1
> And
> In linux, the libcurl version is 7.16.1.

Modified behaviour between two versions should not surprise anyone. What would
the purpose of doing new releases be otherwise?

> Even if it is because version difference , how can a higher version of
> libcurl gives 'SSL level failed' error which a lower version does not give.

Read the protocol dumps, they show it quite clearly.

>> AUTH SSL
> < 500 This security scheme is not implemented
>> AUTH TLS
> < 500 This security scheme is not implemented
> * Closing connection #0
> * Requested FTP SSL level failed

See? This server refuses to do ftp-ssl when asked for it and libcurl bails out
since it couldn't use the requested ftp-ssl level.

>> AUTH SSL
> < 500 This security scheme is not implemented
>> AUTH TLS
> < 500 This security scheme is not implemented

This failed to use ftp-ssl but silently ignored that and proceeded with normal
ftp.

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