Introduction

TwICE is a Java implementation of the Information and Content Exchange (ICE) protocol version 2.0. It implements an ICE syndicator (publisher) and ICE subscriber. TwICE may be useful as a reference implementation or a public syndicator and subscriber for testing.

TwICE was developed based on "The Information and Content Exchange (ICE) Protocol Specification Version 2.0". This document set may be found on the ICE Standard Web page.

The Information and Content Exchange (ICE) is an XML-based protocol for content syndication and subscription. For more information, see the ICE Standard Web page.

This project is called "TwICE" because it is both the second ICE implementation I have written and because it is the second Java reference implementation. The first implementation I wrote is called "Rice"; it was written in Ruby. See the Rice Web site for more information. The first Java reference implementation, "icecubes", is much more complete than TwICE. Why write TwICE? Precisely because it is simpler; it should implement most of what most people need, instead of being a complete (and more complex) full-blown implementation. For more information on icecubes, see its SourceForge project page.

TwICE 2.X is developed and maintained by Jim Armstrong, j_armstrong@users.sourceforge.net. TwICE 1.X was developed and maintained by Jim Menard, jimm@io.com.

Documentation

The documentation page contains links to the User's Manual, FAQ (none yet), and Javadocs.

Download

Download the latest version (2.0.0) from SourceForge. The download contains the Java source code, a jar file (so you don't have to compile anything), and the documentation.

Changes

Here is a summary of the major changes in version 2.0.0:

• TwICE 2.0 was re-implemented based on the 2.0 ICE spec.
• Bug fixes:

Bugs and Missing Features

See the Bugs Page for a complete list of known bugs.

Copying and Warranty

TwICE

TwICE is copyrighted free software by Jim Menard and is released under the Apache Software License, Version 1.1, a copy of which may be found at http://www.apache.org/LICENSE.txt.

Copyright © 2002 Jim Menard (jimm@io.com)

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.
3. The end-user documentation included with the redistribution, if any, must include the following acknowledgment: "This product includes software developed by Jim Menard (jimm@io.com)." Alternately, this acknowledgment may appear in the software itself, if and wherever such third-party acknowledgments normally appear.
4. The names "TwICE" and "Jim Menard" must not be used to endorse or promote products derived from this software without prior written permission. For written permission, please contact jimm@io.com.
5. Products derived from this software may not be called "TwICE", nor may "TwICE" appear in their name, without prior written permission of Jim Menard.

THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED 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 JIM MENARD 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.

MinML2

The following is the copyright notice and license for MinML2, the XML parser by John Wilson (tug@wilson.co.uk) that is used by TwICE and is contained in the file MinML2.jar. You can find MinML2 on the MinML2 Web site.

Copyright (c) 1999, John Wilson (tug@wilson.co.uk).
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

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.

All advertising materials mentioning features or use of this software must display the following acknowledgement:

This product includes software developed by John Wilson. The name of John Wilson may not be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY JOHN WILSON "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 JOHN WILSON 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.