Re:

[Jakub Jelen <jjelen@xxxxxxxxxx>]

Hi,
yourhe above code has couple of issues including the missing hostkey
verification and authentication. Both of these need to be completed before
opening a sftp session as discussed in the first part of the tutorial

https://api.libssh.org/master/libssh_tutor_guided_tour.html

I assume this boils down to this hard-to-parse error. I assume it would be
more useful if we would have better error message in this case. I assume
the failing function here is ssh_channel_new(). In any case, adding more
verbosity might point you to the right place.

Regards,
Jakub

On Wed, Jun 30, 2021 at 6:37 AM Achmad Fathoni <fathoni.id@xxxxxxxxx> wrote:

> I am trying to make a simple connection to SFTP server using libssh0.9.5
> with this program.
>
> //https://api.libssh.org/master/libssh_tutor_sftp.html#sftp_read
> #include <libssh/libssh.h>
> #include <libssh/sftp.h>
> #include <iostream>
>
> using namespace std;
>
> int main(){
>     ssh_session sshs = ssh_new();
>     if(sshs == NULL){
>         cerr << "Error allocating SSH session: " << ssh_get_error(sshs) <<
> endl;
>         return SSH_ERROR;
>     }
>     //using hostname doesn't work either.
>     ssh_options_set(sshs, SSH_OPTIONS_HOST, "192.168.2.15");
>     ssh_options_set(sshs, SSH_OPTIONS_USER, "reach");
>
>     //This is fine
>     int rc = ssh_connect(sshs);
>     if(rc != SSH_OK){
>         cerr << "Error connecting to localhost: " << ssh_get_error(sshs)
> << endl;
>         return SSH_ERROR;
>     }
>
>     //Error is here
>     sftp_session sftps = sftp_new(sshs);
>     if(sftps == NULL){
>         cerr << "Error allocating SFTP session: " << ssh_get_error(sshs)
> << endl;
>         return SSH_ERROR;
>     }
>
>     sftp_free(sftps);
>     ssh_disconnect(sshs);
>     ssh_free(sshs);
>     return 0;
> }
>
> Above program prints `Error allocating SFTP session: sftp_new: Out of
> memory` . I can connect to SFTP in reach@192.168.2.15 using other
> software. Can somebody help me?
>
>