[AG-TECH] contribution to QuickBridge

[S.Booth]

On Wed, 11 Jun 2003, Ivan R. Judson wrote:

Thats fine with me too.

I'm attaching my current (heavily modified) version of the code.
The main features of the modifications are:
  You can forward multiple sessions (e.g. both audio and video) with a
single quickbridge. 
You can set up listen only bridges where the  multicast packets are
forwarded to the unicast members but unicast packets are dropped

 I also have some support for chaining quickbridges together (see
comments/code about fixed entries) but I no longer provide the command
line flags. Basically I was worried about the danger of generating
network feedback and I had written a seperate program for forwarding
traffic between multicast groups or multicast -> unicast.

			Stephen

>  
> Hey Tom,
> 
> The license below is perfectly acceptable and poses no conflict with the
> AGTk license. We'll see what Stephen wants to do with the modified version
> he's worked on.
> 
> Thanks for responding, it's a big help.
> 
> --Ivan
> 
> > -----Original Message-----
> > From: owner-ag-tech at mcs.anl.gov 
> > [mailto:owner-ag-tech at mcs.anl.gov] On Behalf Of Tom Lehman
> > Sent: Wednesday, June 11, 2003 2:52 AM
> > To: shudo at ni.aist.go.jp
> > Cc: ag-tech at mcs.anl.gov
> > Subject: RE: [AG-TECH] contribution to QuickBridge
> > 
> > 
> > 
> > I intended for my code to have an open BSD style license.  
> > Not sure about Stephen Booth or Access Grid in general.
> > 
> > Below is my generic license statement. If this in anyway 
> > conflicts with Access Grid copyright policy, then I would 
> > default to their license statements for QuickBridge releases.
> > 
> > Tom Lehman
> > 
> > 
> > /*
> >  * Copyright (c) 1997-2003
> >  *      Thomas w. Lehman.  All rights reserved.
> >  *
> >  * Redistribution and use in source and binary forms, with or without
> >  * modification, are permitted provided that the following conditions
> >  * are met:
> >  * 1. Redistributions of source code must retain the above copyright
> >  * notice, this list of conditions and the following disclaimer.
> >  * 2. Redistributions in binary form must reproduce the above 
> > copyright
> >  * notice, this list of conditions and the following disclaimer in the
> >  * documentation and/or other materials provided with the 
> > distribution.
> >  *
> >  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
> >  * WARRANTIES,INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
> >  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
> >  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL COPYRIGHTEE
> >  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
> >  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
> >  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
> >  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
> >  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
> >  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
> >  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
> >  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
> >  *
> >  */
> > 
> > > -----Original Message-----
> > > From: owner-ag-tech at mcs.anl.gov [mailto:owner-ag-tech at mcs.anl.gov]On
> > > Behalf Of shudo at ni.aist.go.jp
> > > Sent: Tuesday, June 10, 2003 4:54 AM
> > > To: ag-tech at mcs.anl.gov
> > > Subject: [AG-TECH] contribution to QuickBridge
> > >
> > >
> > > Dear all,
> > >
> > > I have modified source code of QuickBridge to combine broadcast 
> > > domains (subnets) into a single multicast domain. In other 
> > words, the 
> > > modified QuickBridge can join a multicast group and have several 
> > > unicast peers (other QuickBridges) at the same time and 
> > then forward 
> > > multicast traffic between several subnets.
> > >
> > > I want to return the modified code to the AG community, but 
> > > distributing it by myself is not a good way and may not be 
> > allowed by 
> > > license. Conditions of license and intellectual properties 
> > seem not to 
> > > be clear. Can anyone make them clear and give us any suggestions on 
> > > how to contribute for QuickBridge?
> > >
> > > There are two names of contributors to QuickBridge in the 
> > source code, 
> > > Tom Lehman (ISI) and Stephen Booth (EPCC). The former is 
> > the original 
> > > writer of the `mboneuctomcgw' which is the base of 
> > QuickBridge and the 
> > > source code says that the latter has re-written it heavily. 
> >  Are they 
> > > the only contributors (possible copyright holders) to QuickBridge?
> > > If so, do you (especially Lehman and Booth) think it's good thing to
> > > give us license statements of QuickBridge?
> > >
> > >   Kazuyuki Shudo
> > >   Grid Technology Research Center
> > >   National Institute of Advanced Industrial Science and Technology 
> > > (AIST)
> > >
> > 
> > 
> > 
> 

======================================================================
|epcc| Dr Stephen P Booth             Project Manager           |epcc|
|epcc| s.booth at epcc.ed.ac.uk          Phone 0131 650 5746       |epcc|
======================================================================
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