Re: telnet to Cognex In-Sight 4001 camera

Newsgroups	comp.lang.python
Date	2013-02-25 13:52 -0800
References	<9qya2949lwvwn69b2oqy5xya.1361820262242@email.android.com> <CANVf7b-zce4qGu-dxTzMF7405=MNGurUQcJozbS3QBK-fFkZyg@mail.gmail.com> <mailman.2522.1361826958.2939.python-list@python.org>
Subject	Re: telnet to Cognex In-Sight 4001 camera
From	chris.annin@gmail.com
Message-ID	<mailman.2523.1361829168.2939.python-list@python.org> (permalink)

Show all headers | View raw

On Monday, February 25, 2013 1:15:54 PM UTC-8, MRAB wrote:
> On 2013-02-25 20:27, Chris Annin wrote:
> 
> > Ive tried: read_until("Login: "), read_until("User: ") and read_all()
> 
> > all 3 ways return the same thing: "Welcome to In-Sight(R) 4001 Session
> 
> > 1\r\nUser:"
> 
> >
> 
> [snip]
> 
> Does the returned string end exactly with "User:" (no space at the
> 
> end)? I ask because you're asking it to read until "User: " (space at
> 
> the end).

yes it does have the space - sorry. does it make a difference if I use tn.read_until vs tn.read_all?  will it close the connection or not accept a write command if I  dont read_until?  the fact that I get a traceback error when I read_until and I get ",,," when I use read_all - does this mean the connection has been closed?

also when I try tn.open(host) it will give me the welcome screen with the words "session 1" included in the string.  if I then immediately try tn.open(host) again it will give me the same welcome message with "session 1"  could the connection be closing before I get a chance to write the user name?

Back to comp.lang.python | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

Re: telnet to Cognex In-Sight 4001 camera MRAB <python@mrabarnett.plus.com> - 2013-02-25 21:15 +0000
  Re: telnet to Cognex In-Sight 4001 camera chris.annin@gmail.com - 2013-02-25 13:52 -0800
  Re: telnet to Cognex In-Sight 4001 camera chris.annin@gmail.com - 2013-02-25 13:52 -0800

csiph-web