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3 messages
3 total messages Started by Kambiz Aghaiepour Tue, 26 Jan 1993 18:38
Slip and -NXHost
#2340
Author: Kambiz Aghaiepour
Date: Tue, 26 Jan 1993 18:38
29 lines
1619 bytes
I am having trouble -NXHost'ing an application from a client machine that is
connected to my network via slip.  (Yeah, I've heard it's really slow and
not worth the trouble; but I enjoy pain!)

I have Louis A. Mamakos' slip.  And the two machine that are connected are
both running 3.0 (one is a cube, the other a nextstation turbo).  When I 
start any application with the -NXHost option, e.g.

  /NextApps/Terminal.app/Terminal -NXHost slipserver &

I get the following familiar message:

  DPS client library error: Could not form connection, host slipserver

I have set the preferences (on slipserver) to be a public window server
and I have logged out and back in since changing the prefs.  I must be missing
something really obvious.  Has anyone ever tried to do this before?  Any help
is greatly appreciated.

--Kambiz



-- 
 \o__O   o    Kambiz Aghaiepour           - |  kambiz@oceania.com       o   o
   \_   /|\   Oceania Health Care Systems |\-  netcom!oceania!kambiz   //\ //\
    |\   |\   325 Lytton Ave, Suite 400   | |  FAX:   (415) 322-0142    //  //
   / /   |/   Palo Alto, CA 94301           |  Voice: (415) 322-0127    |\  ||
Re: Slip and -NXHost
#2344
Author: Derek Beatty
Date: Wed, 27 Jan 1993 13:54
40 lines
2771 bytes
In article <C1H53I.LuF@oceania.com> kambiz@oceania.com (Kambiz Aghaiepour)  
writes:
> 
> I am having trouble -NXHost'ing an application from a client machine  
that is
> connected to my network via slip.  (Yeah, I've heard it's really slow  
and
> not worth the trouble; but I enjoy pain!)
> 

You don't enjoy that much pain, but... If you examine the /etc/rc* scripts  
and perhaps the boot messages, you'll find that the Mach net message  
server looks around when it starts to see what network interfaces are  
available.  Since this is before Slip is loaded, it doesn't know about  
slip.  Thus you must somehow establish routes so that when the  
netmessageserver tries to send through the ethernet interface, the packets  
actually get routed correctly.  There are various approaches; for example,  
give the ethernet and slip interfaces the same IP address, then on the  
standalone machine in /etc/rc.local:
/etc/route delete 128.2.0.0 $INETADDR
Replace 128.2.0.0 with your network.  

Getting NXHost working over slip is an interesting experiment, and you can  
even get windows up on your screen if you go about it right, but it  
doesn't *really* work.  I think that what happens is that the interaction  
between the remote app and the windowserver consumes essentially all of  
the communication channel just to blink the cursor in a text object, and  
once you try to do anything more, buffers fill up and messages don't get  
through.  (This is at 19.2kbps, headers not compressed.)

Maybe if you just need to push a couple of buttons in an app, you could do  
something useful with NXHost over slip, but the moment you must type  
anything, forget it.  It Just Doesn't Work.

And by the way, you don't have to log out and back in after checking  
Public Window Server in 2.1.  Is that yet another "improvement" of 3.0?

 -- Derek
-- 
Derek_Beatty@cmu.edu   ABD   Comp Sci, CMU, 5000 Forbes, Pgh, PA 15213 USA
Re: Slip and -NXHost
#2361
Author: Ron Pomeroy x(Coop)
Date: Wed, 27 Jan 1993 14:50
33 lines
1856 bytes
In article <C1H53I.LuF@oceania.com> Kambiz Aghaiepour <kambiz@oceania.com>  
writes:
>>
>>I am having trouble -NXHost'ing an application from a client machine that is
>>connected to my network via slip.  (Yeah, I've heard it's really slow and
>>not worth the trouble; but I enjoy pain!)
>>
>>I have Louis A. Mamakos' slip.  And the two machine that are connected are
>>both running 3.0 (one is a cube, the other a nextstation turbo).  When I 
>>start any application with the -NXHost option, e.g.
>>
>>  /NextApps/Terminal.app/Terminal -NXHost slipserver &
>>
>>I get the following familiar message:
>>
>>  DPS client library error: Could not form connection, host slipserver
>>
>>I have set the preferences (on slipserver) to be a public window server
>>and I have logged out and back in since changing the prefs.  I must be  
missing
>>something really obvious.  Has anyone ever tried to do this before?  Any help
>>is greatly appreciated.

The window server on the machine you want to display needs to be public, not  
the server (remote) machine.

At lease that's my understanding...

--
Ronald Pomeroy		"The Internet is just a giant petri dish"
Advanced Micro Devices
CAM Applications Group
rpomeroy@aunext1.amd.com (NeXTmail preferred)
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