Handle control characters in ssh shell server

[Prapatsorn Wisuttirungseurai <prapatsorn416@xxxxxxxxx>]

I have implemented ssh server using libssh as a shell server. I used
ssh_channel_read() and ssh_channel_write() to handle the character between
the server and client.

I dealt with the problem about the control character from client's key such
as 'Backspace', 'Esc' and so on. It seems like nothing happens on the
client's console when using ssh_channel_write() to send that character
straightforwardly. And I found the solution from this issue:
https://www.libssh.org/archive/libssh/2014-08/0000005.html

I just wonder that do I need to handle every control character to affect as
its real action? or it has the better solution?

Thanks.
Prapatsorn