Re: ssh_channel_open_session slow to return

[Paul Beerkens <paul.beerkens@xxxxxxxxxxxxxxxxxxxx>]

I missed the obvious.

From an example I copy pasted:

rc = ssh_userauth_publickey_auto(my_ssh_session, NULL,NULL);
if (rc == SSH_AUTH_ERROR)


But that does not cover SS_SSH_AUTH_DENIED.


I simply need to change it to cover SSH_AUTH_DENIED.


Maybe rc!=SSH_AUTH_SUCCESS is what I will go with.



On Tue, Apr 23, 2019 at 1:40 PM Paul Beerkens <
paul.beerkens@xxxxxxxxxxxxxxxxxxxx> wrote:

> Further to my ssh_channel_open_session question. Here is the API output:
>
> ................
> [2019/04/23 13:31:11.527493, 2] ssh_userauth_publickey_auto:  Tried every
> public key, none matched
> [2019/04/23 13:31:11.527502, 2] channel_open:  Creating a channel 43 with
> 64000 window and 32768 max packet
> [2019/04/23 13:*31*:11.528433, 1] ssh_packet_unimplemented:  Received
> SSH_MSG_UNIMPLEMENTED (sequence number 5)
> [2019/04/23 13:*33*:11.516702, 1] ssh_socket_exception_callback:  Socket
> exception callback: 1 (0)
> [2019/04/23 13:33:11.516757, 1] ssh_socket_exception_callback:  Socket
> error: disconnected
>
> On Tue, Apr 23, 2019 at 8:45 AM Paul Beerkens <
> paul.beerkens@xxxxxxxxxxxxxxxxxxxx> wrote:
>
>> I am doing some final testing on an application using libSSH.
>>
>> I created a situation where I make an SSH call to a machine with a user that is not permissioned to go to that server.
>>
>> This is something that is probably going to happen ocasionally.
>>
>>
>> What I am finding is that it takes two minutes for the *ssh_channel_open_session* call to return with SSH_ERROR.
>>
>> Is there a way I can make this much faster? I can not see a timeout equivelant function of ssh_channel_open_session.
>>
>> This is both a problem becuase it is going to clog up my thread pool and because we can not inform the user for several minutes that there is an issue.
>>
>>
>> Do you have any advise on how to deal with a ssh_channel_open_session call taking 2 minutes?
>>
>>
>> Paul
>>
>>
>>
>>
>>
>>