Re: [U2] Problems with disconnects - telnet

2008-01-23 Thread Gabriel Green
Sounds very similar to what I want to achieve; however, our accounts
within our software are not Windows/UV accounts (these are master by
customer); but rather are stored inside a file once the first phase of
authentication passes (Username and account name or path puts our customers
in the correct customer environment.  Once logged in there; which is
automated with a script; the user then logs in with their own username and
password which lives within the UV environment; it has no parallel in
Windows.)

I suppose I'll have to get creative and see if there are any provisions in
the screen manual.  Or perhaps write a process to update /etc/passwd from
our EMPLOYEES file to match.

I am certain I can make this work with some practice -- how did you
implement this?

Thanks -
Gabe

On Jan 22, 2008 9:20 PM, phil walker [EMAIL PROTECTED] wrote:

 We use screen for RF sessions which drop out leaving sessions around. It
 works quite will, we restrict the user to one UV session and do some
 checking around connections to ensure that the user and only the user
 can connect to a screen session if one is there otherwise it is a usual
 connect.


 -Original Message-
 From: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED] On Behalf Of Gabriel Green
 Sent: Wednesday, 23 January 2008 5:01 p.m.
 To: u2-users@listserver.u2ug.org
 Subject: [U2] Problems with disconnects - telnet

 Hi all,

 Back in the mvBASE days, a telnet disconnect would allow an interactive
 user's activities to continue.  UV is smarter than this, however, and
 is
 quick to get rid of disconnected users.  At least, it does not behave in
 the
 same way.

 What I would like to know is if there are facilities within UV to allow
 this
 sort of behavior.

 One scenario I dreamed up involved using the UNIX utility screen (which
 has
 been ported to Windows with cygwin).  The issue would be tying screen
 sessions to existing telnet sessions and incorporating security so that
 we
 do not have people resuming one another's screen sessions.  Has anyone
 attempted this?  Or is there a third party tool to do this?

 The key thing is: as much transparency to the end user as possible.  The
 tools we have available on the client side are AccuTerm 2K2; and UV
 (running
 on various flavors of Windows 2000-2003) on our servers.  If screen is a
 potential solution, the cygwin layer could be installed.

 The reason I ask is because disconnects - which we have some control
 over;
 but often is left to the whims of customer infrastructure, can cause
 garbed
 up transactions; which gives us untold headaches.

 Ideas, anyone?  We wouldn't go back to mvBASE if our lives depended on
 it;
 but we do need to solve the disconnect issues for our customers who
 refuse
 to pay for high quality data connections to our servers and the
 associated
 equipment.

 Thanks much,
 Gabe
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Re: [U2] Problems with disconnects - telnet

2008-01-23 Thread asvin . dattani
Hi Gabe,

We are using screen (version 4.0.2) on Unix to ensure that we have no 
disconnected sessions. We are only using it on our development machine for 
the moment but intend to roll it out to production pretty soon.

In the unix profile for the user we check to see if there is any active 
screen session by doing a screen -ls - this will only display sessions for 
that user. If there is a disconnected session the profile attaches to that 
session otherwise it creates a new one.

It works well - even repaints the window when the user reattaches. 
However, note that the only terminal emulation it supports is vt100.  You 
may also need to change the default command escape sequence (ctrl-a takes 
you to the screen command line where the user can do all sorts of damage), 
but all of that is pretty well documented in the man pages.

cheers,

asvin

[EMAIL PROTECTED] wrote on 23/01/2008 03:27:31:

 Hi all,
 
 Back in the mvBASE days, a telnet disconnect would allow an interactive
 user's activities to continue.  UV is smarter than this, however, and 
is
 quick to get rid of disconnected users.  At least, it does not behave in 
the
 same way.
 
 What I would like to know is if there are facilities within UV to allow 
this
 sort of behavior.
 
 One scenario I dreamed up involved using the UNIX utility screen (which 
has
 been ported to Windows with cygwin).  The issue would be tying screen
 sessions to existing telnet sessions and incorporating security so that 
we
 do not have people resuming one another's screen sessions.  Has anyone
 attempted this?  Or is there a third party tool to do this?
 
 The key thing is: as much transparency to the end user as possible.  The
 tools we have available on the client side are AccuTerm 2K2; and UV 
(running
 on various flavors of Windows 2000-2003) on our servers.  If screen is a
 potential solution, the cygwin layer could be installed.
 
 The reason I ask is because disconnects - which we have some control 
over;
 but often is left to the whims of customer infrastructure, can cause 
garbed
 up transactions; which gives us untold headaches.
 
 Ideas, anyone?  We wouldn't go back to mvBASE if our lives depended on 
it;
 but we do need to solve the disconnect issues for our customers who 
refuse
 to pay for high quality data connections to our servers and the 
associated
 equipment.
 
 Thanks much,
 Gabe
 ---
 u2-users mailing list
 u2-users@listserver.u2ug.org
 To unsubscribe please visit http://listserver.u2ug.org/



HSBC Bank plc may be solicited in the course of its placement efforts for 
a new issue, by investment clients of the firm for whom the Bank as a firm 
already provides other services. It may equally decide to allocate to its 
own proprietary book or with an associate of HSBC Group. This represents a 
potential conflict of interest. HSBC Bank plc has internal arrangements 
designed to ensure that the firm would give unbiased and full advice to 
the corporate finance client about the valuation and pricing of the 
offering as well as internal systems, controls and procedures to identify 
and manage conflicts of interest.

HSBC Bank plc
Registered Office: 8 Canada Square, London E14 5HQ, United Kingdom
Registered in England - Number 14259
Authorised and regulated by the Financial Services Authority.




-
SAVE PAPER - THINK BEFORE YOU PRINT!

This transmission has been issued by a member of the HSBC Group
HSBC for the information of the addressee only and should not be
reproduced and/or distributed to any other person. Each page
attached hereto must be read in conjunction with any disclaimer
which forms part of it. Unless otherwise stated, this transmission
is neither an offer nor the solicitation of an offer to sell or
purchase any investment. Its contents are based on information
obtained from sources believed to be reliable but HSBC makes no
representation and accepts no responsibility or liability as to its
completeness or accuracy.
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RE: [U2] Problems with disconnects - telnet

2008-01-23 Thread David Jordan
Hi Gabe

With Remote Desktop Connection, as the terminal emulator is running on the
server, if the connection drops, the terminal emulator is still connected to
the server and you can reconnect and continue from where you left off.  Also
as the session is tied to the user through login and password, you can avoid
someone accessing another person's session.

I have not tested this on terminal services environment, but as RDC uses
terminal services, I would assume this would work.  Maybe setting up a
terminal services environment would be the cheapest and quickest solution.  

You should look at Windows 2008, where the end user can access an
application through Remote Desktop Connection, and it is so seamless, it
looks like just another application on the user's PC.

Regards

David Jordan
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Re: [U2] Problems with disconnects - telnet

2008-01-23 Thread Gabriel Green
I'll print out the manpage.  vt100, unfortunately, is not an option; we need
ADDS Viewpoint A2 Enhanced emulation that AccuTerm does.  Now, I have
(without involving screen) proxied telnet sessions by setting the TERM
variable to addsvp and the enhanced mode (if I recall correctly) worked fine
in AccuTerm.

This will be an interesting project, indeed.  Thanks for your help.  I will
probably create a demo account when I have time and see what I can do to
make this work.

Gabe

On Jan 23, 2008 5:20 AM, [EMAIL PROTECTED] wrote:

 Hi Gabe,

 We are using screen (version 4.0.2) on Unix to ensure that we have no
 disconnected sessions. We are only using it on our development machine for
 the moment but intend to roll it out to production pretty soon.

 In the unix profile for the user we check to see if there is any active
 screen session by doing a screen -ls - this will only display sessions for
 that user. If there is a disconnected session the profile attaches to that
 session otherwise it creates a new one.

 It works well - even repaints the window when the user reattaches.
 However, note that the only terminal emulation it supports is vt100.  You
 may also need to change the default command escape sequence (ctrl-a takes
 you to the screen command line where the user can do all sorts of damage),
 but all of that is pretty well documented in the man pages.

 cheers,

 asvin

 [EMAIL PROTECTED] wrote on 23/01/2008 03:27:31:

  Hi all,
 
  Back in the mvBASE days, a telnet disconnect would allow an interactive
  user's activities to continue.  UV is smarter than this, however, and
 is
  quick to get rid of disconnected users.  At least, it does not behave in
 the
  same way.
 
  What I would like to know is if there are facilities within UV to allow
 this
  sort of behavior.
 
  One scenario I dreamed up involved using the UNIX utility screen (which
 has
  been ported to Windows with cygwin).  The issue would be tying screen
  sessions to existing telnet sessions and incorporating security so that
 we
  do not have people resuming one another's screen sessions.  Has anyone
  attempted this?  Or is there a third party tool to do this?
 
  The key thing is: as much transparency to the end user as possible.  The
  tools we have available on the client side are AccuTerm 2K2; and UV
 (running
  on various flavors of Windows 2000-2003) on our servers.  If screen is a
  potential solution, the cygwin layer could be installed.
 
  The reason I ask is because disconnects - which we have some control
 over;
  but often is left to the whims of customer infrastructure, can cause
 garbed
  up transactions; which gives us untold headaches.
 
  Ideas, anyone?  We wouldn't go back to mvBASE if our lives depended on
 it;
  but we do need to solve the disconnect issues for our customers who
 refuse
  to pay for high quality data connections to our servers and the
 associated
  equipment.
 
  Thanks much,
  Gabe
  ---
  u2-users mailing list
  u2-users@listserver.u2ug.org
  To unsubscribe please visit http://listserver.u2ug.org/


 
 HSBC Bank plc may be solicited in the course of its placement efforts for
 a new issue, by investment clients of the firm for whom the Bank as a firm
 already provides other services. It may equally decide to allocate to its
 own proprietary book or with an associate of HSBC Group. This represents a
 potential conflict of interest. HSBC Bank plc has internal arrangements
 designed to ensure that the firm would give unbiased and full advice to
 the corporate finance client about the valuation and pricing of the
 offering as well as internal systems, controls and procedures to identify
 and manage conflicts of interest.

 HSBC Bank plc
 Registered Office: 8 Canada Square, London E14 5HQ, United Kingdom
 Registered in England - Number 14259
 Authorised and regulated by the Financial Services Authority.
 



 -
 SAVE PAPER - THINK BEFORE YOU PRINT!

 This transmission has been issued by a member of the HSBC Group
 HSBC for the information of the addressee only and should not be
 reproduced and/or distributed to any other person. Each page
 attached hereto must be read in conjunction with any disclaimer
 which forms part of it. Unless otherwise stated, this transmission
 is neither an offer nor the solicitation of an offer to sell or
 purchase any investment. Its contents are based on information
 obtained from sources believed to be reliable but HSBC makes no
 representation and accepts no responsibility or liability as to its
 completeness or accuracy.
 ---
 u2-users mailing list
 u2-users@listserver.u2ug.org
 To unsubscribe please visit http://listserver.u2ug.org/
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Re: [U2] Problems with disconnects - telnet

2008-01-23 Thread Bob Rasmussen
As the author of a telnet/SSH package, I have discussed this problem in 
various forums over the years. Here is what I have learned.

It is often possible to prevent a process from being terminated when a 
connection is dropped, by trapping the hangup signal (SIGHUP) generated by 
the telnetd or sshd. However, I have never heard of a way to reconnect to 
an orphaned session. So this is only half a solution.

The only solution I have heard of is 'screen', a utility on some 
Unix/Linux systems that is intended for managing multiple sessions over 
one terminal connection. But screen also has a capability to leave 
sessions open, and a capability to reconnect to orphaned sessions.

I have often considered modifying the SSH daemon provided by OpenSSH, 
freely available in source form, to allow for these options. Anyone 
interested in funding such a project?

Regards,
Bob Rasmussen,   President,   Rasmussen Software, Inc.

personal e-mail: [EMAIL PROTECTED]
 company e-mail: [EMAIL PROTECTED]
  voice: (US) 503-624-0360 (9:00-6:00 Pacific Time)
fax: (US) 503-624-0760
web: http://www.anzio.com
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RE: [U2] Problems with disconnects - telnet

2008-01-23 Thread Jerry Banker
If you are using Accuterm, do you have keep alive set? That's on the
connection tab under the Advanced button.

Jerry Banker


 -Original Message-
 From: Gabriel Green [mailto:[EMAIL PROTECTED]
 Sent: Wednesday, January 23, 2008 9:06 AM
 To: u2-users@listserver.u2ug.org
 Subject: Re: [U2] Problems with disconnects - telnet
 
 I'll print out the manpage.  vt100, unfortunately, is not an option;
we
 need
 ADDS Viewpoint A2 Enhanced emulation that AccuTerm does.  Now, I have
 (without involving screen) proxied telnet sessions by setting the TERM
 variable to addsvp and the enhanced mode (if I recall correctly)
worked
 fine
 in AccuTerm.
 
 This will be an interesting project, indeed.  Thanks for your help.  I
 will
 probably create a demo account when I have time and see what I can do
 to
 make this work.
 
 Gabe
 
 On Jan 23, 2008 5:20 AM, [EMAIL PROTECTED] wrote:
 
  Hi Gabe,
 
  We are using screen (version 4.0.2) on Unix to ensure that we have
no
  disconnected sessions. We are only using it on our development
 machine for
  the moment but intend to roll it out to production pretty soon.
 
  In the unix profile for the user we check to see if there is any
 active
  screen session by doing a screen -ls - this will only display
 sessions for
  that user. If there is a disconnected session the profile attaches
to
 that
  session otherwise it creates a new one.
 
  It works well - even repaints the window when the user reattaches.
  However, note that the only terminal emulation it supports is vt100.
 You
  may also need to change the default command escape sequence (ctrl-a
 takes
  you to the screen command line where the user can do all sorts of
 damage),
  but all of that is pretty well documented in the man pages.
 
  cheers,
 
  asvin
 
  [EMAIL PROTECTED] wrote on 23/01/2008 03:27:31:
 
   Hi all,
  
   Back in the mvBASE days, a telnet disconnect would allow an
 interactive
   user's activities to continue.  UV is smarter than this,
however,
 and
  is
   quick to get rid of disconnected users.  At least, it does not
 behave in
  the
   same way.
  
   What I would like to know is if there are facilities within UV to
 allow
  this
   sort of behavior.
  
   One scenario I dreamed up involved using the UNIX utility screen
 (which
  has
   been ported to Windows with cygwin).  The issue would be tying
 screen
   sessions to existing telnet sessions and incorporating security so
 that
  we
   do not have people resuming one another's screen sessions.  Has
 anyone
   attempted this?  Or is there a third party tool to do this?
  
   The key thing is: as much transparency to the end user as
possible.
 The
   tools we have available on the client side are AccuTerm 2K2; and
UV
  (running
   on various flavors of Windows 2000-2003) on our servers.  If
screen
 is a
   potential solution, the cygwin layer could be installed.
  
   The reason I ask is because disconnects - which we have some
 control
  over;
   but often is left to the whims of customer infrastructure, can
 cause
  garbed
   up transactions; which gives us untold headaches.
  
   Ideas, anyone?  We wouldn't go back to mvBASE if our lives
depended
 on
  it;
   but we do need to solve the disconnect issues for our customers
who
  refuse
   to pay for high quality data connections to our servers and the
  associated
   equipment.
  
   Thanks much,
   Gabe
   ---
   u2-users mailing list
   u2-users@listserver.u2ug.org
   To unsubscribe please visit http://listserver.u2ug.org/
 
 
  
  HSBC Bank plc may be solicited in the course of its placement
efforts
 for
  a new issue, by investment clients of the firm for whom the Bank as
a
 firm
  already provides other services. It may equally decide to allocate
to
 its
  own proprietary book or with an associate of HSBC Group. This
 represents a
  potential conflict of interest. HSBC Bank plc has internal
 arrangements
  designed to ensure that the firm would give unbiased and full advice
 to
  the corporate finance client about the valuation and pricing of the
  offering as well as internal systems, controls and procedures to
 identify
  and manage conflicts of interest.
 
  HSBC Bank plc
  Registered Office: 8 Canada Square, London E14 5HQ, United Kingdom
  Registered in England - Number 14259
  Authorised and regulated by the Financial Services Authority.
  
 
 
 
  -
  SAVE PAPER - THINK BEFORE YOU PRINT!
 
  This transmission has been issued by a member of the HSBC Group
  HSBC for the information of the addressee only and should not be
  reproduced and/or distributed to any other person. Each page
  attached hereto must be read in conjunction with any disclaimer
  which forms part of it. Unless otherwise stated, this transmission
  is neither an offer nor the solicitation of an offer to sell or
  purchase any investment. Its contents

Re: [U2] Problems with disconnects - telnet

2008-01-23 Thread karlp
When I have users in our remote office get dumped by internet/network
problems, I use TANDEM then ESC-F to enter feed mode, and control their
orphaned session and log them out gracefully, or complete their order to a
point they can pick it up in a new session.

TANDEM is a marvelous tool for this type of thing, though it does require
human intervention, which can be tedious.

Karl

quote who=Bob Rasmussen
 As the author of a telnet/SSH package, I have discussed this problem in
 various forums over the years. Here is what I have learned.

 It is often possible to prevent a process from being terminated when a
 connection is dropped, by trapping the hangup signal (SIGHUP) generated by
 the telnetd or sshd. However, I have never heard of a way to reconnect to
 an orphaned session. So this is only half a solution.

 The only solution I have heard of is 'screen', a utility on some
 Unix/Linux systems that is intended for managing multiple sessions over
 one terminal connection. But screen also has a capability to leave
 sessions open, and a capability to reconnect to orphaned sessions.

 I have often considered modifying the SSH daemon provided by OpenSSH,
 freely available in source form, to allow for these options. Anyone
 interested in funding such a project?

 Regards,
 Bob Rasmussen,   President,   Rasmussen Software, Inc.

 personal e-mail: [EMAIL PROTECTED]
  company e-mail: [EMAIL PROTECTED]
   voice: (US) 503-624-0360 (9:00-6:00 Pacific Time)
 fax: (US) 503-624-0760
 web: http://www.anzio.com
 ---
 u2-users mailing list
 u2-users@listserver.u2ug.org
 To unsubscribe please visit http://listserver.u2ug.org/



-- 
Karl Pearson
Director of I.T.
ATS Industrial Supply, Inc.
[EMAIL PROTECTED]
http://www.atsindustrial.com
800-789-9300 x29
Local: 801-978-4429
Fax: 801-972-3888

To mess up your Linux PC, you have to really work at it;
 to mess up a microsoft PC you just have to work on it.
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RE: [U2] Problems with disconnects - telnet

2008-01-23 Thread Dennis Bartlett
Hi Gabe

There is a guy who has written a terminal emulator with a bit of class. Its
called BRIZ, the guy's name is Grygory Pryamov, and you can find him on 
Mytmppost [at] mail.ru.

He is really keen and willing to adapt his emulator to do what you want it
to do. As a matter of interest he has also written an MV editor that
supplies drop downs (like Visual basic) for the syntax of InfoBasic... quite
neat!)

Perhaps that would work for you

Dennis

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Gabriel Green
Sent: 23 January 2008 05:06 PM
To: u2-users@listserver.u2ug.org
Subject: Re: [U2] Problems with disconnects - telnet

I'll print out the manpage.  vt100, unfortunately, is not an option; we need
ADDS Viewpoint A2 Enhanced emulation that AccuTerm does.  Now, I have
(without involving screen) proxied telnet sessions by setting the TERM
variable to addsvp and the enhanced mode (if I recall correctly) worked fine
in AccuTerm.

This will be an interesting project, indeed.  Thanks for your help.  I will
probably create a demo account when I have time and see what I can do to
make this work.

Gabe

On Jan 23, 2008 5:20 AM, [EMAIL PROTECTED] wrote:

 Hi Gabe,

 We are using screen (version 4.0.2) on Unix to ensure that we have no
 disconnected sessions. We are only using it on our development machine for
 the moment but intend to roll it out to production pretty soon.

 In the unix profile for the user we check to see if there is any active
 screen session by doing a screen -ls - this will only display sessions for
 that user. If there is a disconnected session the profile attaches to that
 session otherwise it creates a new one.

 It works well - even repaints the window when the user reattaches.
 However, note that the only terminal emulation it supports is vt100.  You
 may also need to change the default command escape sequence (ctrl-a takes
 you to the screen command line where the user can do all sorts of damage),
 but all of that is pretty well documented in the man pages.

 cheers,

 asvin

 [EMAIL PROTECTED] wrote on 23/01/2008 03:27:31:

  Hi all,
 
  Back in the mvBASE days, a telnet disconnect would allow an interactive
  user's activities to continue.  UV is smarter than this, however, and
 is
  quick to get rid of disconnected users.  At least, it does not behave in
 the
  same way.
 
  What I would like to know is if there are facilities within UV to allow
 this
  sort of behavior.
 
  One scenario I dreamed up involved using the UNIX utility screen (which
 has
  been ported to Windows with cygwin).  The issue would be tying screen
  sessions to existing telnet sessions and incorporating security so that
 we
  do not have people resuming one another's screen sessions.  Has anyone
  attempted this?  Or is there a third party tool to do this?
 
  The key thing is: as much transparency to the end user as possible.  The
  tools we have available on the client side are AccuTerm 2K2; and UV
 (running
  on various flavors of Windows 2000-2003) on our servers.  If screen is a
  potential solution, the cygwin layer could be installed.
 
  The reason I ask is because disconnects - which we have some control
 over;
  but often is left to the whims of customer infrastructure, can cause
 garbed
  up transactions; which gives us untold headaches.
 
  Ideas, anyone?  We wouldn't go back to mvBASE if our lives depended on
 it;
  but we do need to solve the disconnect issues for our customers who
 refuse
  to pay for high quality data connections to our servers and the
 associated
  equipment.
 
  Thanks much,
  Gabe
  ---
  u2-users mailing list
  u2-users@listserver.u2ug.org
  To unsubscribe please visit http://listserver.u2ug.org/


 
 HSBC Bank plc may be solicited in the course of its placement efforts for
 a new issue, by investment clients of the firm for whom the Bank as a firm
 already provides other services. It may equally decide to allocate to its
 own proprietary book or with an associate of HSBC Group. This represents a
 potential conflict of interest. HSBC Bank plc has internal arrangements
 designed to ensure that the firm would give unbiased and full advice to
 the corporate finance client about the valuation and pricing of the
 offering as well as internal systems, controls and procedures to identify
 and manage conflicts of interest.

 HSBC Bank plc
 Registered Office: 8 Canada Square, London E14 5HQ, United Kingdom
 Registered in England - Number 14259
 Authorised and regulated by the Financial Services Authority.
 



 -
 SAVE PAPER - THINK BEFORE YOU PRINT!

 This transmission has been issued by a member of the HSBC Group
 HSBC for the information of the addressee only and should not be
 reproduced and/or distributed to any other person. Each page
 attached hereto must be read

RE: [U2] Problems with disconnects - telnet

2008-01-23 Thread John Jenkins
And of course there's wIntegrate in thin client mode for those that are
considering this.

Regards

JayJay
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Re: [U2] Problems with disconnects - telnet

2008-01-23 Thread Gabriel Green
We have far too many users (thousands) for TANDEM to be a graceful solution;
unfortunately.

We are looking at solving this on the UV level by keeping track of where a
user was and writing out regularly to various records as they progress in
their session, and presenting the user with a screen at next login allowing
(s)he to resume where they left off if a disconnect occurs.

If necessary, I will look at a solution involving screen but I am confident
our senior software engineer can solve it at the UV level after discussing
it with him. =)

Thanks all for your help.

By the way, TANDEM on UV 10.2 Windows does not capture the controlling
user's Enter key.  Has anyone else experienced this problem or found a
workaround?

Thanks for all your help-
Gabe

On Jan 23, 2008 9:41 AM, [EMAIL PROTECTED] wrote:

 When I have users in our remote office get dumped by internet/network
 problems, I use TANDEM then ESC-F to enter feed mode, and control their
 orphaned session and log them out gracefully, or complete their order to a
 point they can pick it up in a new session.

 TANDEM is a marvelous tool for this type of thing, though it does require
 human intervention, which can be tedious.

 Karl

 quote who=Bob Rasmussen
  As the author of a telnet/SSH package, I have discussed this problem in
  various forums over the years. Here is what I have learned.
 
  It is often possible to prevent a process from being terminated when a
  connection is dropped, by trapping the hangup signal (SIGHUP) generated
 by
  the telnetd or sshd. However, I have never heard of a way to reconnect
 to
  an orphaned session. So this is only half a solution.
 
  The only solution I have heard of is 'screen', a utility on some
  Unix/Linux systems that is intended for managing multiple sessions over
  one terminal connection. But screen also has a capability to leave
  sessions open, and a capability to reconnect to orphaned sessions.
 
  I have often considered modifying the SSH daemon provided by OpenSSH,
  freely available in source form, to allow for these options. Anyone
  interested in funding such a project?
 
  Regards,
  Bob Rasmussen,   President,   Rasmussen Software, Inc.
 
  personal e-mail: [EMAIL PROTECTED]
   company e-mail: [EMAIL PROTECTED]
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RE: [U2] Problems with disconnects - telnet

2008-01-22 Thread phil walker
We use screen for RF sessions which drop out leaving sessions around. It
works quite will, we restrict the user to one UV session and do some
checking around connections to ensure that the user and only the user
can connect to a screen session if one is there otherwise it is a usual
connect.


-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Gabriel Green
Sent: Wednesday, 23 January 2008 5:01 p.m.
To: u2-users@listserver.u2ug.org
Subject: [U2] Problems with disconnects - telnet

Hi all,

Back in the mvBASE days, a telnet disconnect would allow an interactive
user's activities to continue.  UV is smarter than this, however, and
is
quick to get rid of disconnected users.  At least, it does not behave in
the
same way.

What I would like to know is if there are facilities within UV to allow
this
sort of behavior.

One scenario I dreamed up involved using the UNIX utility screen (which
has
been ported to Windows with cygwin).  The issue would be tying screen
sessions to existing telnet sessions and incorporating security so that
we
do not have people resuming one another's screen sessions.  Has anyone
attempted this?  Or is there a third party tool to do this?

The key thing is: as much transparency to the end user as possible.  The
tools we have available on the client side are AccuTerm 2K2; and UV
(running
on various flavors of Windows 2000-2003) on our servers.  If screen is a
potential solution, the cygwin layer could be installed.

The reason I ask is because disconnects - which we have some control
over;
but often is left to the whims of customer infrastructure, can cause
garbed
up transactions; which gives us untold headaches.

Ideas, anyone?  We wouldn't go back to mvBASE if our lives depended on
it;
but we do need to solve the disconnect issues for our customers who
refuse
to pay for high quality data connections to our servers and the
associated
equipment.

Thanks much,
Gabe
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