Replying again in case my mobile message didn't make it:

If I'm reading the error message right, a null session pointer is passed to
_last_errno. So the error is occurring at a layer above libssh2. In curl
maybe?

Alex


On 7 June 2013 15:56, balloon <[email protected]> wrote:

> hi,
> I'm using: libcurl (7.21.3) + openssl(0.9.8k) + libssh2(1.2.8)  as SFTP
> client to try to download 1 byte from server .  Client side code is like
> this:
>
>         CURL *curl = curl_easy_init();
>         curl_easy_setopt(curl, CURLOPT_SSH_AUTH_TYPES,
> CURLSSH_AUTH_PASSWORD);
>         curl_easy_setopt(curl, CURLOPT_USERPWD, m_userpwd.c_str());
>         curl_easy_setopt(curl, CURLOPT_URL, myUrl.c_str());
> curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
>         curl_easy_setopt(curl, CURLOPT_WRITEDATA, hd_src);
> curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, this->write_callback);
>  curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, (curl_off_t)1);
>          curl_easy_perform(curl);
>  curl_easy_cleanup(curl);
>
> To most SFTP server,  this works fine. But when we use this code to
> connect to the SFTP server that our customer provided.
> We get this error in step curl_easy_perform(curl) :
>
> But if we try to connect customer's SFTP server  by FileZilla  or other
> mature SFTP client,  no error occur.
> This seems to be really serious issue, and I don't know what is wrong
> here. Please do help to figure it out. Thanks.
>
>
>
> _______________________________________________
> libssh2-devel http://cool.haxx.se/cgi-bin/mailman/listinfo/libssh2-devel
>
>


-- 
Swish - Easy SFTP for Windows Explorer (http://www.swish-sftp.org)
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