Nabble - Netty Announcements

Netty 3.1.0.ALPHA2 released - More bells and whistles

2008-12-03T17:25:07Z

Hi folks,

Netty 3.1.0.ALPHA2, the second milestone of the another major feature
release iteration has been released. Please visit our web site to
download it:

* http://www.jboss.org/netty/

As always, your feed back is more than appreciated. Please visit the
discussion forum and leave some comments and questions:

* http://www.jboss.org/netty/community.html

Reliable and Configurable Write Buffer Overflow Prevention
==========================================================
Netty now ships with high and low water mark based write buffer
overflow prevention mechanism, which is much more robust, high-
performing, and configurable. You can configure the high and low
water mark of the write buffer size via NioSocketChannelConfig.

In other words, you have much lower chance of getting OutOfMemoryError
than before!

If the byte unit size of the write buffer exceeds high water mark,
Channel.isWritable() will return false until the byte unit size of
the write buffer goes down under the low water mark. Also,
'channelInterestChanged' event will be fired to notify the status of the
write buffer.

See here for more information: https://jira.jboss.org/jira/browse/NETTY-71

CodecEmbedder
=============
CodecEmbedder (org.jboss.netty.handler.codec.embedder) has been added
to greatly simplify:

* testing Netty encoders and decoders, and
* calling Netty encoders and decoders without setting up mock objects
by yourself, so that they can be used within other codec to build a
multi-layered protocol or even be used to integrate with a non-Netty
application that needs to interoperate with a Netty application.

For the detailed description and examples, please see the following
page: https://jira.jboss.org/jira/browse/NETTY-87

ChannelGroup
============
ChannelGroup (org.jboss.netty.group) allows you to create a set of
Channels and perform a bulk operations on it.

For example, you could add all open Channels to a ChannelGroup and
close all of them before shutting down the service. This will greatly
simplify the service shut down in combination with the
ChannelFactory.releaseExternalResources(), which has been added in
the previous release.

Also, you can broadcast a message to many sessions in just one call, and
can wait for each write request to be done via ChannelGroupFuture.
ChannelGroupFuture also lets you add ChannelGroupFutureListeners just
like you can add ChannelFutureListener to ChannelFuture, and allows you
to determine if the request was completely successful, partially
successful, completely failed. or partially failed.

ChannelLocal
============
I found some users still miss the attribute map of MINA IoSession, and
ChannelLocal is the alternative solution to meet their needs. Using
ChannelLocal, you can add an attribute to Channels more efficiently from
both performance and memory consumption perspective.

The usage of ChannelLocal is very similar to that of ThreadLocal, which
ChannelLocal was named after:

final ChannelLocal<String> myAttr = new ChannelLocal<String>();
...
String a = myAttr.get(channel);
myAttr.set(channel, "newValue");
myAttr.remove(channel);

Please note that Channel always should be specified unlike ThreadLocal,
because there's no elegent way to figure out what the 'current' Channel
is. (In contrast, ThreadLocal uses Thread.currentThread().) Any idea
to improve the usability of ChannelLocal is appreciated.

Upcoming Releases
=================
All features added in this release will be reviewed continuously
following up your feed back. A couple more alpha versions will be
released with more new features and improvements. Please feel free to
browse the road map and let us know what you think about it:

* http://tinyurl.com/5vpxux

Please also note that we are always open to your suggestion and
contribution on any feature which is not listed in the road map yet. :)

Miscellaneous
=============
For the detailed changelog, please visit here:

* http://tinyurl.com/5ua8fj

Again, as always, your feed back is more than appreciated. Please visit
the discussion forum and feel free to leave some comments and questions:

* http://www.jboss.org/netty/community.html

Cheers,
Trustin

--
Trustin Lee, Principal Software Engineer, JBoss, a division of Red Hat
--
what we call human nature in actuality is human habit
--
http://gleamynode.net/

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Netty 3.1.0.ALPHA1 released - HTTP and convenient service shutdown

2008-11-26T11:38:35Z

Hi community,

Netty 3.1.0.ALPHA1, the beginning of the another major feature release
iteration has been released. Please visit our web site to download it:

* http://www.jboss.org/netty/

As always, your feed back is more than appreciated. Please visit the
discussion forum and leave some comments and questions:

* http://www.jboss.org/netty/community.html

HTTP Codec
==========
Thanks to Andy Taylor's contribution, this first alpha release ships
with a preliminary implementation of HTTP codec. It's a low level codec
that enables the development of highly customized HTTP clients and
servers. Please take a look at the HTTP client/server example:

* http://tinyurl.com/5w3fpb

You will find a great degree of freedom and little restriction, which
means it's completely up to you to conform to the standard or not. If
there's enough demand, Netty could provide more high-level standard
compliant HTTP component which is similar to what Apache HttpComponents
provides.

I'd like appreciate Andy's effort again to make this possible sooner
than I originally expected. Please let us know if anything is missing
or any improvement in the API is required.

More Convenient Service Shutdown
================================
Many users have been asking how to shut down a service correctly so that
there's no remaining threads. There was an explicitly documented
procedure to shut down a service, but it was somewhat complicated than
it is supposed to be.

In this release, ChannelFactoryResource interface has been added to
simplify the service shut down procedure. All client examples have been
updated to demonstrate this feature. For instance, the FactorialClient
example is much more elegant than before - no more System.exit()!

* http://tinyurl.com/5d7xoa

It still requires you to close all open channels managed by the
ChannelFactory, but it will be dealt with in the next release.

Channel.getCloseFuture()
========================
It is now possible to wait until a channel is closed more conveniently.
You will always be notified with a channelClosed event whan a channel is
closed as Netty does in 3.0, but Channel.getCloseFuture() will give you
more choice on it. It's especially useful when you write a client
application and want to wait until a channel is closed in background:

Channel c = ...;
c.getCloseFuture().awaitUninterruptibly();

Upcoming Releases
=================
All features added in this release will be reviewed continuously
following up your feed back. A couple more alpha versions will be
released with more new features and improvements. Please feel free to
browse the road map and let us know what you think about it:

* http://tinyurl.com/5vpxux

Please also note that we are always open to your suggestion and
contribution on any feature which is not listed in the road map yet. :)

Miscellaneous
=============
For the detailed changelog, please visit here:

* http://tinyurl.com/5ztogv

Again, as always, your feed back is more than appreciated. Please visit
the discussion forum and feel free to leave some comments and questions:

* http://www.jboss.org/netty/community.html

Cheers,
Trustin

--
Trustin Lee, Principal Software Engineer, JBoss, a division of Red Hat
--
what we call human nature in actuality is human habit
--
http://gleamynode.net/

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Netty 3.0.2.GA released

2008-11-18T18:11:10Z

Hi everyone,

Netty 3.0.2.GA, the third production-ready stable release of Netty 3
has been released. Please visit out web site to download it:

* http://www.jboss.org/netty/

As always, your feed back is more than appreciated. Please visit the
discussion forum and leave some comments and questions:

* http://www.jboss.org/netty/community.html

Continuous Integration
======================
In this release, continuous integration helped me discover and fix the
problems which occur intermittently. All unit tests which cover 75%+
of the code base are running more than *2000* times a day with 7 JDKs
(SUN 1.5/1.6/1.7, IBM 1.5/1.6, JRockit 1.5/1.6) now. Please feel free
to browse the current status:

* http://tinyurl.com/5rdsld

Bug Fixes
=========
Netty 3.0.2.GA is purely a bug fix release. It is fully backward-
compatible with the previous releases, 3.0.0.GA and 3.0.1.GA.

I'd like to thank Frederic Bregier and Doug Lea for lending their hands
to fix a tricky concurrency issue with Netty's internal concurrent queue
implementation.

Upcoming Releases
=================
Andy Taylor has finished his HTTP codec on top of Netty and it will be
included in Netty 3.1.0.ALPHA1, which should be released soon. Please
stay tuned!

Miscellaneous
=============
For the detailed changelog, please visit here:

* http://tinyurl.com/652q4x

Again, as always, your feed back is more than appreciated. Please visit
the discussion forum and feel free to leave some comments and questions:

* http://www.jboss.org/netty/community.html

Cheers,
Trustin
--
Trustin Lee, Principal Software Engineer, JBoss, a division of Red Hat
--
what we call human nature is actually human habit
--
http://gleamynode.net/

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Netty 3.0.1.GA released

2008-11-09T19:21:59Z

Hi everyone,

Netty 3.0.1.GA, the second production-ready stable release of Netty 3
has been released. Please visit out web site to download it:

* http://www.jboss.org/netty/

As always, your feed back is more than appreciated. Please visit the
discussion forum and leave some comments:

* http://www.jboss.org/netty/community.html

Bug Fixes
=========
Netty 3.0.1.GA is purely a bug fix release. It is fully
backward-compatible with previous release, 3.0.0.GA.

I'd like to thank Frederic Bregier and Tim Fox for contacting me with
the detailed bug reports.

Upcoming Releases
=================
Andy Taylor is working on HTTP codec on top of Netty and it will be
included in Netty 3.1.0.ALPHA1, which will be released soon. Please
stay tuned!

Miscellaneous
=============
For the detailed changelog, please visit here:

* http://tinyurl.com/5zm6rl

Again, as always, your feed back is more than appreciated. Please visit
the discussion forum and feel free to leave some comments:

* http://www.jboss.org/netty/community.html

Cheers,
Trustin

PS: I didn't make an announcement for 3.0.0.GA - apologies!
--
Trustin Lee, Principal Software Engineer, JBoss, a division of Red Hat
--
what we call human nature is actually human habit
--
http://gleamynode.net/

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Netty 3.0.0.CR5 released - Performance that rocks!

2008-10-06T21:40:44Z

Hi folks,

Netty 3.0.0.CR5, the fifth release candidate of Netty 3.0.0 has been
released. Please visit our web site to download it:

* http://www.jboss.org/netty/

As always, your feed back is more than appreciated. Please visit the
discussion forum and leave some comments:

* http://www.jboss.org/netty/community.html

The Best Performance Ever
=========================

I have published the performance test report which compares the
performance of 5 open source NIO frameworks including Netty. According to
the test result, Netty 3.0.0.CR5 seems to have achieved a breakthrough in
NIO framework performance. Read here:

* http://www.jboss.org/netty/performance.html

SimpleChannelHandler Just Got More Convenient
=============================================

SimpleChannelHandler now implements ChannelDownstreamHandler along with
ChannelUpstreamHandler. It simplifies the implementation of a downstream
event handler significantly. The user guide has been updated and
simplified thanks to this change.

Bug Fixes
=========

Various bugs were found and fixed during the performance test. Most of
them were race conditions under heavy load.

On the other hand, a bug in object serialization codec was fixed thanks to
the detailed bug report by Frederic. Thanks, Frederic!

Upcoming Releases
=================

Unless a major issue is reported within the next iteration, Netty
3.0.0.CR5 will become a GA release.

Miscellaneous
=============

For the detailed changelog, please visit here:

* http://tinyurl.com/48sape

Again, as always, your feed back is more than appreciated. Please visit
the discussion forum and feel free to leave some comments:

* http://www.jboss.org/netty/community.html

Cheers,
--
Trustin Lee - Principal Software Engineer, JBoss, Red Hat
--
what we call human nature is actually human habit
--
http://gleamynode.net/
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Netty 3.0.0.CR4 released - now with a Getting Started Guide!

2008-09-22T06:08:59Z

Hi folks,

Netty 3.0.0.CR4, the fourth release candidate of Netty 3.0.0 has been
released. Please visit our web site to download it:

* http://www.jboss.org/netty/

As always, your feed back is more than appreciated. Please visit the
discussion forum and leave some comments:

* http://www.jboss.org/netty/community.html

The User Guide
==============

The biggest and sole addition in this release is the user guide, which is
distributed in various formats such as HTML and PDF. Although many
chapters in the document is not written yet, it should be enough for a
beginner to write a network application on top of Netty right away.
Please feel free to comment. I know it needs a lot more work and there
are many missing pieces yet. Please check it out now!

* http://tinyurl.com/4375n7

Performance Improvements
========================

Overall startup and shutdown time has been decreased significantly. If
you were starting and stopping a server or a client frequently, you will
experience a lot of speedup.

Also, a slowdown has been fixed, which happens when a user tries to write
a message when the channel is closed already. This issue was reported by
Matt R. Thanks Matt!

Bug Fixes
=========

A critical bug where the last byte is lost when a connection is closed.
This issue was reported by Mike Heath. Thanks Mike!

Upcoming Releases
=================

Unless a major issue is reported within the next iteration, Netty
3.0.0.CR4 will become a GA release. Please don't worry too much even if
the documentation is far from perfection. The documentation will always
be up-to-date online even after the GA is released with incomplete
documentation, and the subsequent releases will contain the latest user
guide and API reference as usual.

Miscellaneous
=============

For the detailed changelog, please visit here:

* http://tinyurl.com/536e3z

Again, as always, your feed back is more than appreciated. Please visit
the discussion forum and feel free to leave some comments:

* http://www.jboss.org/netty/community.html

Cheers,

--
Trustin Lee - Principal Software Engineer, JBoss, Red Hat
--
what we call human nature is actually human habit
--
http://gleamynode.net/
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Re: Netty 3.0.0.CR3 released - Test coverage!

2008-08-28T18:10:44Z

On Fri, 29 Aug 2008 10:08:16 +0900, Trustin Lee <tlee@...> wrote:

> For the detailed changelog, please visit here:
>
> * http://tinyurl.com/64hwo3

I'm sorry for an incorrect URL. The correct change log is here:

* http://tinyurl.com/634z3c

Thanks,

--
Trustin Lee - Principal Software Engineer, JBoss, Red Hat
--
what we call human nature is actually human habit
--
http://gleamynode.net/
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Netty 3.0.0.CR3 released - Test coverage!

2008-08-28T18:08:12Z

Hi folks,

Netty 3.0.0.CR3, the third release candidate of Netty 3.0.0 has been
released. In this release, I wrote a lot of test cases to achieve more
than 75% test coverage, and it's 78% now. You could now safely assume any
noticeable bugs have gone away. Thanks to the test cases, various bugs
were found and fixed. Please visit our web site to download it:

* http://www.jboss.org/netty/

As always, your feed back is more than appreciated. Please visit the
discussion forum and leave some comments:

* http://www.jboss.org/netty/community.html

GA is coming!
=============

There were some subtle improvements here and there, but they are not as
important to be highlighted in this announcement. Shorter announcement
indicates we are very close to the GA release. From now on, I will focus
on documentation. Please stay tuned!

Project registered in Ohloh
===========================

I have added the Netty project to Ohloh.net, which provides various stats
for an open source project. If you are using Netty, you could click 'I
use this' button on the right side of the page:

* http://www.ohloh.net/projects/netty

You can also see my personal stats here - I wouldn't mind if you are going
to give me some kudo for a good reason ;)

* http://www.ohloh.net/accounts/trustin

Miscellaneous
=============

For the detailed changelog, please visit here:

* http://tinyurl.com/64hwo3

Again, as always, your feed back is more than appreciated. Please visit
the discussion forum and feel free to leave some comments:

* http://www.jboss.org/netty/community.html

Cheers,

--
Trustin Lee - Principal Software Engineer, JBoss, Red Hat
--
what we call human nature is actually human habit
--
http://gleamynode.net/
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Netty 3.0.0.CR2 released

2008-08-21T00:44:26Z

Hi folks,

Netty 3.0.0.CR2, the second release candidate of Netty 3.0.0 has been
released. This release fixes various bugs including the performance
degradation in the NIO transport. It also features reduced application
exception stack trace, which will be explained in this release note.
Please visit our web site to download it:

* http://www.jboss.org/netty/

As always, your feed back is appreciated. Please visit the discussion
forum and leave some comments:

* http://www.jboss.org/netty/community.html

ChannelBuffer.EMPTY_BUFFER moves to ChannelBuffers
==================================================

This is a backward incompatible change which had to be introduced in this
release unfortunately. The change is as simple as replacing
'ChannelBuffer.EMPTY_BUFFER' with 'ChannelBuffers.EMPTY_BUFFER' though. I
hope this is the last backward incompatible change in 3.0.

Performance improvements
========================

The NIO transport suffered with a performance dropdown when a user writes
a message from a user-thread, which is not an I/O thread. 3.0.0.CR2
minimized resolved this problem by reducing the number of unnecessary NIO
calls. Also, tiny optimizations were done here and there to squeeze out
even more throughput while maintaining very low latency.

Exception stack trace simplification
====================================

The stack trace of an exception which is created inside a ChannelHandler
has been unnecessarilly long, making an application debugging difficult.
This is a typical problem of event-driven frameworks which implement the
chain of responsibility pattern. 3.0.0.CR2 shortened the stack trace of
an application exception dramatically while not losing an important stack
trace element.

Micellaneous
============

Besides the notable improvements mentioned above, a number of bugs were
fixed in this release. For the detailed changelog, please visit here:

* http://tinyurl.com/64hwo3

Again, as always, your feed back is appreciated. Please visit the
discussion forum and feel free to leave some comments:

* http://www.jboss.org/netty/community.html

Cheers,

--
Trustin Lee - Principal Software Engineer, JBoss, Red Hat
--
what we call human nature is actually human habit
--
http://gleamynode.net/
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Netty 3.0.0.CR1 released - the first release candidate!

2008-08-13T20:39:37Z

Hi folks,

I'm so excited to announce Netty 3.0.0.CR1, the first release candidate of
Netty 3.0.0. There were a number of improvements include a couple bug
fixes in this release. Netty 3.0.0.CR1 is also the first release since
Netty moved its nest from GoogleCode and Google Groups to JBoss.org.
Please vitie the new web site to download it:

* http://www.jboss.org/netty/

As always, your feed back is appreciated. Please visit the discussion
forum and leave some comments:

* http://www.jboss.org/netty/community.html

Changes in package names
========================

The package name has been changed from net.gleamynode.netty to
org.jboss.netty. Also, Maven groupId has been changed to
org.jboss.netty. There was no change in package structure itself, so
fixing compilation errors should be as easy as reorganizing imports in
your IDE.

More convenient ChannelBuffer
=============================

A number of convenience methods were added to ChannelBuffer. The
noteworthy additions are the access methods for unsigned integers and
Strings. These methods should help a user to access more complicated
message structure conveniently.

Pluggable Logging
=================

A user can decide what logging framework Netty should use now. Please
refer to the JavaDoc of org.jboss.netty.logging.InternalLoggerFactory for
more information with an example.

Bug fixes
=========

The following two bugs were reported by the community and fixed.

* The race condition in SslHandleer has been fixed, thanks to
hawkins.steven
* A bug where DelimiterFrameDecoder fails to find a delimiter has been
fixed, thanks to noteric

Micellaneous
============

For the detailed changelog, please visit here:

* http://tinyurl.com/5p5adc

At last but least, please note that no messages will be sent to Google
Groups from this point. Please use the new forum and mailing list:

* http://www.jboss.org/netty/community.html

Cheers,

--
Trustin Lee - Principal Software Engineer, JBoss, Red Hat
--
what we call human nature is actually human habit
--
http://gleamynode.net/
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The Netty project moved to JBoss.org

2008-08-13T19:41:18Z

Hi folks,

Before announcing the release of Netty 3.0.0.CR1 (release candidate), I'd
like to announce that I have just migrated Netty from GoogleCode.com to
JBoss.org. From now on, Netty is hosted by JBoss.org at:

* http://www.jboss.org/netty/

Please note that you need to subscribe to new mailing lists or forums.
The old google groups (netty-announcement@... and
netty@...) will enter read-only mode soon. Therefore, please
find the list of the available mailing lists and forums at:

* http://www.jboss.org/netty/community.html

and subscribe again. Please accept my apologies for your inconvenience of
resubscription.

Then, see you there!

--
Trustin Lee - Principal Software Engineer, JBoss, Red Hat
--
what we call human nature is actually human habit
--
http://gleamynode.net/
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