Telnet session ANSIW

[Guest]

Hi,
I am trying to establish a telnet session to do screen scraping. This device
returns some custom escape sequences, which I can ignore, and some standard
escape seq's. At your suggestion, I used Ethereal and netcap.exe. On
negotiation the server requests ECHO, and also BINARY. When submitting
username, it echos back every charactor I type as I type it. The password
gets an ack on every char typed, but not an echo. After that, echo returns.
When the server sends data, it may send some now, then the rest a few seconds
later. When creating a telnet client in .NET, I receive all of the
custom/standard escape seq chars and the data it is sending. When I send it
data, however, it is not being properly encoded or something. When submitting
my username to login, it rejects it. I can go to a win32 client that works
(but can't be automated without an interactive session) and the same username
password works fine on the same host. The server is some iteration of an old
UNIX OS. Version not available (proprietary).
Hyperterm does fine at default settings, status bar says ANSIW. Windows
Telnet displays everything recieved from the device ok, but rejects whatever
I type in. I suspect it's the ANSIW thing. How can I resolve this? How do I
use ANSIW in .NET 2.0? Does .NET 3.0 support this? Any 3rd party components
support this? I just tried ActiveSockets no luck.
Thanks

 

[Walter Wang [MSFT]]

Hi,

Based on my understanding, you're having trouble to send correctly-encoded
data to a remote telnet server and you've found Hyperterminal with ANSIW
emulation mode is working fine; another Win32 client is also working fine.

I've searched around but didn't find any detailed information on this ANSIW
protocol.

Although HyperTerminal is bundled with Windows XP, it's written by
Hilgraeve (http://www.hilgraeve.com/htpe/index.html). I suggest you contact
them on the implementation detail about the ANSIW information.

You mentioned that one of your Win32 clilent can connect to the server
correctly, do you by any chance to check the source code of it?

Also, if you're using a third party component to create the telnet client,
you might want to check the vendor's support to see if it supports ANSIW
emulation mode.

Sincerely,
Walter Wang ([email protected], remove 'online.')
Microsoft Online Community Support

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[Guest]

Hi Walter,
Thanks for the quick reply.
Although support for ANSIW or SCO UNIX is not mentioned anywhere with any
..net 3rd party components, I did manage to finally stumble across one that
works!
Ipworks Telnet component (nSoftware) works. I get some custom escape
sequences at the beginning of the session, which I can ignore, and everything
else comes across as it should. And when I send data, it is correctly encoded.
ANY OF YOU GUYS WANTING TO COMMUNICATE w/ a
LUCENT 5ESS SWITCH IN DOT NET, THIS ONE WORKS!
Thanks Walter

 

[Walter Wang [MSFT]]

Hi,

I'm glad you've found a solution to the issue and thank you for sharing
this great experience with the community!


Regards,
Walter Wang ([email protected], remove 'online.')
Microsoft Online Community Support

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