Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!usc!snorkelwacker!bloom-beacon!EXPO.LCS.MIT.EDU!keith
From: keith@EXPO.LCS.MIT.EDU (Keith Packard)
Newsgroups: comp.windows.x
Subject: Re: XDMCP/-query option to MIT sample servers
Message-ID: <9006061659.AA05569@xenon.lcs.mit.edu>
Date: 6 Jun 90 16:59:06 GMT
References: <1378@esatst.yc.estec.nl>
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 19


> I have a question about the XDMCP support in the MIT sample server, in my
> particular case the Xhp server.

> I tried the ``-query xdm-host'' option when starting
> Xhp but
> it did not help. The only thing that happend was that Xhp generated an error 
> message: ``XDM: too many retransmissions''.

xdm does not support XDMCP when running on SYSV machines.  The lack of reliable
signal handling in a SYSV environment would make this quite difficult to
implement.  The problem revolves around listening for UDP packets on a socket
and also waiting for child process termination.

The server is working fine in your case, the display manager is simply not
listening for the packets.

Keith Packard
MIT X Consortium