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From Ralph Goers <Ralph.Go...@dslextreme.com>
Subject Re: BSD & 'external' ASL licensed JARs, hosting in SVN repo?
Date Tue, 15 Nov 2005 22:05:29 GMT
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Paul - <br>
I'm posting this to the legal list (you may have thought you did - the
legal list automatically replies to individuals not the list).&nbsp; I am
just a developer and follow the legal list because I'm interested in
it.&nbsp; My opinion on these jars doesn't count for much as I'm not a
lawyer.&nbsp; However, I certainly would like to see more definitive
documentation on the switch from LGPL to Apache as my understanding is
that that cannot be done without permission from everyone who has ever
My apologies to the list for the HTML but I don't believe the
attachments will show up without it.<br>
Paul Smith wrote:<br>
<blockquote cite="mid71693CCF-E8ED-41DC-ABA4-55CB889E5401@apache.org"
  <pre wrap="">
  <p>To save you the trouble of downloading the distro, attached ar the
4&nbsp; files in the root of the distribution, plus a screen grab of the&nbsp;
distro hierachy.&nbsp; It seems from README.txt file that Arthur Van Hoff&nbsp;
has 'approved' it (his name is there), but I guess that could have&nbsp;
been placed by anyone.&nbsp; It would be nice if there was a public email&nbsp;
with the discussion but I can't find it either.
On a side note, is the XStream jar ok? (the BSD one) to host in SVN?
cheers and thanks for your input.
On 15/11/2005, at 6:10 PM, Ralph Goers wrote:
  <blockquote type="cite"><br>
Paul Smith wrote:
    <blockquote type="cite"><br>
<a class="moz-txt-link-freetext" href="http://sourceforge.net/projects/jmdns/">http://sourceforge.net/projects/jmdns/</a>
(note the summary page still says LGPL, but if you look in the&nbsp;&nbsp;
"Latest News" section they say it's ASL 2, and the distro has the&nbsp; ASL&nbsp;
license in it.
Is it ok to host _any_ ASL 2 licensed product inside our SVN repo?
thanks guys/gals,
Paul Smith
While the blurb mentions permission of all parties I find myself&nbsp;
wondering if they obtained permissions from Arthur van Hoff and&nbsp; from
Strangeberry since they were the original copyright holders,&nbsp; but of
jRendezvous not jmdns.&nbsp; I couldn't find anything in their&nbsp; mailing list
archives or forum that even discuss changing the&nbsp; license. I didn't
download the distro - does it say?
  <pre wrap="">CHANGELOG 16 July 2005  Rick Blair

1. Added Apache License Version 2.0

2. Added shutdown fix as identifed by Scott Lewis

3. Added copyright notice.

4. General code cleanup.

CHANGELOG  30 November 2004 rawcoder

1. IPv6 support

   - RFE 890432: IPv6 support implemented

2. Logging

   - Logging is done using the Java Logger API now

3. Bug fixes

   - JmDNS reannounces services after their TTL has timed out.

4. Plattform dependency

   - Due to the changes done for IPv6 support and the logging, 
     JmDNS requires now a JVM supporting a J2SE 1.4 API.

CHANGELOG  6 June 2004 rawcoder

1. General API Changes

   - RFE 868432: Changed listener API to comply with the commonly used
                 EventListener/EventObject idiom 
   - RFE 868433: Added a list method to class JmDNS which can be used to 
                 retrieve a list of available  services without having to 
                implement a ServiceListener.
   - RFE 892855: All API's use now unqualified service instance names

2. General implementation changes

   - JmDNS now runs through the Rendezvous Conformance Test, when the options
     "-M hn" are used.
   - Threads are now handled differently. ServiceListeners and 
     ServiceTypeListeners can not assume anymore that they are invoked from
     the AWT event dispatcher thread.
   - States are now handled explicitly using class DNSState.

3. DNSCache

   - Removed the hash table code and use now a java.util.Hashtable.
   - This reduces the overall size of the class.

4. DNSConstants

   - Added several new time interval constants.

5. DNSEntry

   - Now overrides method hashCode() to return a value, that is consistent with
     method equals().

6. DNSIncoming

   - Added a warning to constant EMPTY. Using this constant is dangerous, because a Vector
     is mutable. Thus it can not be used as a constant this way.
   - Made many instance variables and methods private.
   - Added more output to method print(), to help me debug JmDNS.
   - Optimized StringBuffer handling in method toString().
   - Added methods isTruncated() and append().
   - DNSIncoming must adjust variables numAnswers, numAuthorities, numAdditionals when skipping

7. DNSOutgoing

   - Made as many instance variables private as I could.
   - Added assertions (using if-Statements) to all add...() methods to prevent construction
     illegal data structures.

8. DNSRecord

   - Made as many instance variables private as I could.
   - Moved code from class JmDNS into class DNSRecord. The new operations are named: handleQuery()
     handleResponse() and addAnswer(). This is to get rid of the big switch-statements that
     in method handleQuery() and handleResponse() of class JmDNS.
     This does somehow make the relationship between these two classes a little bit more complex

9. JmDNS

   - Added comments to some of the instance variables.
   - Added an instance variable named 'state' to track the state of the host name published
by JmDNS, and of 
     JmDNS itself.
   - Replaced instance variable 'Vector browsers' by a hash map named 'serviceListeners'.
   - Got rid of the query cache. All caching is done now by a single cache.
   - Added instance variables for counting probe throttles.
   - Added an instance variable named 'hostNameCount' to create a new host name, when a conflict
was detected.
   - Added a java.util.Timer. All outgoing messages and maintenance of the cache is now coordinated
using the
     timer. This greatly reduces the number of concurrent threads. 
   - Added an instance variable named 'ioLock'. This lock is used to coordinate the incoming
listener thread
     with the timer tasks.
   - Added a static variable named 'random'. It is used to generate random delays for responses.
   - All outgoing tasks such as probing, announcing, responding and canceling are now handled
by instances of
   - Added an instance variable named 'task', to keep track of timer tasks associated with
the host name.
   - Transferred code from JmDNS to DNSRecord to get rid of some ugly switch statements.

10. ServiceInfo

   - Added an instance variable named 'state' to track the state of the service. 
     This is used only, if the service is published by JmDNS.
   - Added an instance variable named 'task', to keep track of timer tasks associated with
the service info.

11. Sample code

   - Added a "samples" package to JmDNS. This package contains sample
     programs for JmDNS.

12. JavaDoc
   - Added a "package.html" file for each package. This file holds package
     documentation used by JavaDoc.

13. Build
   - Added a "samples" task to build.xml.
   - The "javadoc" task puts now a version number into the header of
     each generated page.

CHANGELOG  21 APRIL 2004 RickBlair

1. JmDNS
   -Fixed broken additionals in the Query Function.
   -Added additionals to the SVC query.

CHANGELOG  28-29 MAR 2004 jeffs
1. JmDNS

  - Added probing thread to handle address record probing and conflicts

  - Fixed wait times to be in line with the draft mDNS spec.

  -  Added query cache so can check if another machine is also 
     probing for our address.

  - Added support for slowing down the request rate during
    probing as per the draft mDNS spec.

  - Added conflict checks.
  - General code clean up.

  - changed visibility of static debug variable to public 
  so apps can check it and decide to do their own logging and so on
  - changed visbility of all non-static variables to private
  - added package protected method getCache() 
  - broke up handleQuery() into:

        private DNSOutgoing typeA()
        private DNSOutgoing typePTR()
        private DNSOutgoing findService()
  - reduced handleQuery() synchronized block 
  to just cover Socket.send() call

  [need to figure out what else needs synchronization]

2. ServiceInfo

  - changed all calls to JmDNS cache variable 
  to use JmDNS getCache() accessor instead
  - replaced javadoc comment 
  so the javadoc tool would quit whining
3. DNSConstants

  - Added constants for wait times and probe times.

  - changed to be a final class
  - changed all references to it's fields in all other classes
  to read DNSConstants.whatever

Know Problems.

-- The additional section is broken in handleQuery.  This will be fixed in the next go round.

-- Service probing is still not to spec.  No conflict resolution.

-- Still can blow address space on very busy networks.

  <pre wrap="">
<hr size="4" width="90%">
// %Z%%M%, %I%, %G%
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// Lesser General Public License for more details.
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

//This library is now licensed under the Apache License Version 2.0  Please 
//see the file NOTICE.  

Arthur van Hoff
<a class="moz-txt-link-abbreviated" href="mailto:avh@strangeberry.com">avh@strangeberry.com</a>

Rick Blair
<a class="moz-txt-link-abbreviated" href="mailto:rickblair@mac.com">rickblair@mac.com</a>

** JmDNS

This is an implemenation of multi-cast DNS in Java. It currently
supports service discovery and service registration. It is fully
interoperable with Apple's Rendezvous. 

** Requirements

jmdns has been tested using the JDK 1.3.1 and JDK 1.4.0
on the following platforms:

Windows 9x, XP, 2000
Linux   RedHat 7.3-9.0, Mandrake

** Running jmdns from the Command Line

GUI browser:

  java -jar lib/jmdns.jar -browse

TTY browser for a particular service type:

  java -jar lib/jmdns.jar -bs _http._tcp local.

Register a service:

  java -jar lib/jmdns.jar -rs foobar _http._tcp local. 1234 path=index.html

List service types:

  java -jar lib/jmdns.jar -bt
To print debugging output specify -d as the first argument.  

** Sample Code for Service Registration

    import javax.jmdns.*;

    JmDNS jmdns = new JmDNS();
    	new ServiceInfo("_http._tcp.local.", "foo._http._tcp.local.", 1234, 0, 0, "path=index.html")

** Sample code for Serivice Discovery

    import javax.jmdns.*;

    static class SampleListener implements ServiceListener
	public void addService(JmDNS jmdns, String type, String name)
	    System.out.println("ADD: " + jmdns.getServiceInfo(type, name));
	public void removeService(JmDNS jmdns, String type, String name)
	    System.out.println("REMOVE: " + name);
	public void resolveService(JmDNS jmdns, String type, String name, ServiceInfo info)
	    System.out.println("RESOLVED: " + info);

    JmDNS jmdns = new JmDNS();
    jmdns.addServiceListener("_http._tcp.local.", new SampleListener());

** Changes since October 2003

- Renamed package com.strangeberry.rendezvous to javax.jmdns
- fixed unicast queries
- fixed property handling
- use the hostname instead of the service name is address resolution
- Added Apache License.
  <pre wrap="">
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