Devart Forums

There seems to be a serious problem with the SSHshell component. I note that another user here has what looks like a similar problem.

I want to use the component in blocking mode - but the thing does not block correctly.

If I try something like
cp.connect
cp.writestring('some command')
cp.readstring()

...it does not work. All I EVER get back is nothing at all.

I tried an idea mentioned here in the forum and added a 1 second timer delay between the write and the read. And that kind of works. I do at least get something back, although I am not too sure if the response is fully correct.

From this it seems that the component is not blocking, which is rather important for my application. Putting in a random time delay is not a fix - it is silly. What if there is a slow connection and it takes 2xtimedelay to get a response? No, some random time delay is not an answer.

Is this a bug? Or is it by design? ie do I have to get a response back in some other way?

It also seems that the response returns the correct response, but is then followed by a lot of garbage characters.

I am looking at buying this component. I have tried the competition, and it returns the correct (ie no garbage characters) response.

Any ideas?

This problem was discussed in the following topics:
http://devart.com/forums/viewtopic.php?t=12954

We are investigating this problem to improve work of TScSSHShell. As soon as we solve the problem we will let you know.

This problem is imho a terminal-settings problem.
Dealing with echo-ing the command(s) , the remote-prompt and the control-characters for some kind of virtual terminal ( line breaks etc ) would hugely enhance the usability of the shell component.

Hi.

I wonder if there is any progress in this issue?

I am using Version V2.60 of SecureBrigde and it seems to occur there, too.
Is this issue fixed in V3.0?

Best regards,
Ajoschi

We still haven't fixed the problem, because different SSH servers and Operating Systems use different ways to know echoing of a command, and thus there is no single solution.