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List:       kde-devel
Subject:    Re: Fwd: Daemon for managing dialup internetconnections now
From:       "Bjoern.Kahl" <bjoern () hp1 ! ang-physik ! uni-kiel ! de>
Date:       1999-06-25 8:24:43
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On 25-Jun-99 Simon Hausmann wrote:
> On Thu, 24 Jun 1999, Havoc Pennington wrote:
> 
>>  - The hard one: we need not only shared IDL, but a common way to 
>>    obtain a server implementing the given interface, and a way 
>>    for users to configure which server will be used. In Gnome, 
>>    we have a 'libgnorba' library that does this. But it's 
>>    Gnome-specific.
> 
> Yes, and comparable to libgnorba we have the KDE daemon and libkded,
> also KDE specific.

 [ ... ]

 I am sorry, but I can´t follow you. 
 I don´t know what "IDL", "ORB", "CORBA" or a "Namig Service" is.

 I would prefer, to keep it small and simple. Current codesize of
 NetMgr-server (= daemon) is 41220 Bytes (Bytes, *not* _k_bytes),
 codesize on clientside needed to to everything possible is about
 10k after linking. This includes NetMgr-library (libnetmgr.a)
 and everything needed from clib (socket(), connect(), select() ...).

 Communication between client and server is done using UNIX-Domain-
 sockets and, as an option, Inet-sockets (inetsockets are not
 implemented in current release).

> 1) Use a naming service. IIRC Gnome uses the COS Naming Service from
>    ORBit. KDED has it's own, smaller (and more simple = less features
> but 
>    less memory consumption) Naming Service, incompatible with COSNaming.
>    The approach to actually get the IOR of this naming service (or kded
>    in case of KDE) is the same in both environments -> a special
> property
>    on the X root window.

 ???

 What I wrote is supposed to be a generall, systemwide connecting-service.
 using X-Based thing will kill one of its design-goals: prevent timebased
 connecting and disconnecting from interrupting hand-made connectings:

 Example:
 - I start at 23:50 surfing the web
 - At 0:10 cron decides, it time to get mail
 - cron trys to dial -> may fail or not, depending on dialingsystem
 - at 0:15 mailtransfer is done, mailscript hangs up
 - -> my websurf gets interrupted.

 Here comes NetMgr in (one of its tasks):

 - I request to be online : ./goonline
   (or in futur: my webbrowser, irc-client, mail-client, what ever else
   did it using libnetmgr.a/NetMgr_requestlink(...) )
 - NetMgr dials
 - I surf
 - cron starts mailtransfer
 - mailscript request to be online
 - NetMgr says "link allready up"
 - mailtransfer ends, mailscript tells NetMgr "gooffline"
 - NetMgr *don´t* hangup, because I still have my onlinerequest pending
 - later when i am finished surfing : ./gooffline
   (or, in futur: my networkprogramme tells NetMgr it dont need the link
    any longer
 - NetMgr recognize, last onlinerequest has gone
 - NetMgr hangsup.


 (I feel, I have to write more complet, better understandable docu and
  upload it as soon as possible.)

 Ciao,

      Bjoern

-- 
+-------------------------------------------------------------+
| Björn Kahl       +++   <bjoern@hp1.ang-physik.uni-kiel.de>  |
| Raum :  II 204   +++   Tel. +49 431 880 3934                |
| Institut für Experimentelle und Angewandte Physik, Uni Kiel |
+-------------------------------------------------------------+

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