[99063] in RedHat Linux List
Re: xdm chooser
daemon@ATHENA.MIT.EDU (Jim Cunning)
Thu Nov 12 00:51:23 1998
Date: Wed, 11 Nov 1998 21:55:20 -0800 (PST)
From: Jim Cunning <jcunning@NTS.cts.com>
To: Tressens Lionel <tressens@etud.insa-tlse.fr>
cc: RedHat List <redhat-list@redhat.com>
In-Reply-To: <Pine.LNX.4.03.9811112106500.1626-100000@blagnac.etud.insa-tlse.fr>
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
On Wed, 11 Nov 1998, Tressens Lionel wrote:
> I want to know how does the chooser works ...
> i.e. I want to know how to interact with xdm to give it back the name of
> the choosen host.
>
> Any clues ?
As its name implies, xdm is a manager for X displays (also called X
servers). It does its job using a protocol called XDMCP (X display
manager control protocol). One of the messages available with XDMCP is
called "IndirectQuery," (two others are DirectQuery and BroadcastQuery)
which is issued by a terminal server to a specific host running xdm.
When xdm receives an indirect query, it runs the chooser to issue direct
or broadcast queries on behalf of the X server and it formats a window on
the X display with the responses received from xdm running on other hosts
within a certain period of time. The user at the X display then tells the
chooser which host to use by highlighting the desired line and pressing
<enter> or by clicking the entry with mouse button 1.
That's the nutshell explanation. For more details, see "man xdm"
Jim Cunning
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