Thanks a lot for getting back to my question. Daniel,
I am using latest Curl with latest libssh2 library. Here is what I got from Curl.
I am able to use WinSCP to get files from the same JScape server via sftp for the same account.

curl 7.35.0 (x86_64-pc-win32) libcurl/7.35.0 OpenSSL/1.0.1f zlib/1.2.8 WinIDN libssh2/1.4.3Protocols: dict file ftp ftps gopher http https imap imaps ldap pop3 pop3s rtsp scp sftp smtp smtps telnet tftp Features: AsynchDNS GSS-Negotiate IDN IPv6 Largefile NTLM SPNEGO SSL SSPI libz
So far I don't know what the problem came from and how to resolve it? Is it worth to call libssh2 directly from the C++ -program?
Thank you very for your help.
Michael Zhang
> Date: Thu, 20 Feb 2014 09:43:36 +0100
> From: daniel_at_haxx.se
> To: curl-users_at_cool.haxx.se
> Subject: Re: sftp--curl: (56) Failure when receiving data from the peer.
>
> On Tue, 18 Feb 2014, Michael Zhang wrote:
>
> > I was using curl 7.35 to download a file from a JScape sftp server but got a
> > problem. The connection was closed after 64000 bytes. What's received is
> > only partial file. Here is a simplified log file. The returned error message
> > is curl: (56) Failure when receiving data from
> > the peer.
>
> ...
>
> > Could anyone help me to figure out why this abnormal trunk happened and how
> > to resolve this issue? It seems that curl was expecting 2000 bytes for the
> > trunk and it reported an error because only 1536 bytes were received.
>
> Right. It seems as if the connection is broken or somehow otherwise causing
> libssh2 to not want to continue anymore. Are you using a recent libssh2
> version?
>
> --
>
> / daniel.haxx.se
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Received on 2014-02-20