Duplicated root@xxx1234:~$ line

[jkoenig134]

Duplicated root@xxx1234:~$ line

[GreenAppers]

That might be a terminal emulation issue. Make sure that you're supplying termvar to the SSHClient constructor.

Is your use case interactive? (e.g. sending the SSH channel data to another terminal emulator). If so, setting termvar to xterm would be good place to start.

On the other hand if you're, e.g. doing some remote scripting, you'd probably want to set termvar to dumb and possibly run some stty commands at the start of the session. bash regularly redraws the prompt using escape codes for interactive terminals.

If you're making an SSH mobile app, you'll probably want a terminal emulator for Dart. I'm not sure of the existing options there. That might be a future project I'd consider.

Cheers!

[jkoenig134]

Thanks for the Fast answer! You are right, i want to make an ssh terminal emulator. Why is your library not good for it?
And.. How can i set the termvar?

[jkoenig134]

@GreenAppers I found the termvar variable in the SSHClient constructor. But it doesn´t take effect.

[GreenAppers]

A terminal emulator transduces a byte stream into a series of pixel buffers.

The termvar is probably taking effect, but it will only change the resulting byte stream. It can't render the byte stream into a screen, e.g. by interpreting escape codes as cursor movements.

It looks like there are at least some terminal emulator packages for Dart. I haven't tried any of them.

If I created a terminal emulator it would be a separate package, probably named dartterm. The interface would accept as input the SSH channel data, and produce as output a Canvas or Widget. I do have some old C++ code for a terminal emulator (just as I had old C++ code for SSH transport). I'll look into this in future, but ATM I'm busy with other work. Thanks!

[jkoenig134]

At the moment i just wanted to send and receive text. The design for the ssh client is another part. The command stty -echo worked for me. Nothing gets duplicated.