On Tue, 24 Oct 2006, Parthiv Dave wrote:

> I am using Curl 7.15.5 version with OpenSSL support (openssl 9.8d). There
> is some error in initalizing SSL connection with server.

You probably use 0.9.8d, as there's never been any 1.0 or later release of
OpenSSL...

> Can you please help me out?

> Below is the debug output from the process:
> * Trying 47.129.114.251... * connected
> * Connected to 47.129.114.251 ! (47.129.114.251) port 21
> < 220 Serv-U FTP Server v6.3 for WinSock ready...
> > AUTH SSL
> < 234 AUTH command OK. Initializing SSL connection.
> * error setting certificate verify locations, continuing anyway:
> * CAfile: /usr/share/curl/curl-ca-bundle.crt
> CApath: none
> * Unknown SSL protocol error in connection to 47.129.114.251:21
> * Closing connection #0

Did you try to enforce SSL v2 or v3 or even TLS v1? Did you try skipping the
server certificate verification?

Does it work with other tools, OpenSSL-based or not?

Do you have access to the server or have contact with its admins to figure out
if the server logs anything about the error?

-- 
  Commercial curl and libcurl Technical Support: http://haxx.se/curl.html