socketio-netty
满俊楠
http://code.google.com/p/socketio-netty/downloads/detail?name=chat_server.zip&can=2&q=#makechanges
socketio-netty(socket.io 服务器端JAVA实现) 近期升级手记
前言
针对JAVA开发者，socketio-netty是一个socket.io的服务器端选择，又是目前兼容最新0.9+ – 1.0的JAVA服务器端实现。
从http://socket.io官网来看，最近版本升级趋于缓和，几乎是没修正一个Bug，小版本就增加一次。已经是非常稳定的版本了，可以真正使用了。
貌似国内使用socket.io少之又少，可惜了，这么优秀的全功能型实时推送实现，小众范围内被知晓。
嗯，就最近当前项目修改做一些简单记载。
升级手记
- netty升级到3.4.5
3.4.5的QueueFactory类，增加对了JAVA SE 7引入的JUC并发类LinkedTransferQueue，若是本地使用JAVA SE 6，还想要保持高性能的阻塞队列，那就需要引入Doug Lea’s jsr166y.jar并发包(下载地址)，然后修改一下QueueFactory实现。我已经重新打包成jar包（这里是netty-3.4.5.Final-modify.jar）。
QueueFactory原始代码：12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273 public final class QueueFactory {private static final boolean useUnsafe = DetectionUtil . hasUnsafe ();private static final InternalLogger LOGGER = InternalLoggerFactory . getInstance ( QueueFactory . class );private QueueFactory () {// only use static methods!}/*** Create a new unbound {@link BlockingQueue}** @param itemClass the {@link Class} type which will be used as {@link BlockingQueue} items* @return queue the {@link BlockingQueue} implementation*/public static < T > BlockingQueue < T > createQueue ( Class < T > itemClass ) {// if we run in java >=7 its the best to just use the LinkedTransferQueue which// comes with java bundled. See #273if ( DetectionUtil . javaVersion () >= 7 ) {return new java . util . concurrent . LinkedTransferQueue < T >();}try {if ( useUnsafe ) {return new LinkedTransferQueue < T >();}} catch ( Throwable t ) {// For whatever reason an exception was thrown while loading the LinkedTransferQueue//// This mostly happens because of a custom classloader or security policy that did not allow us to access the// com.sun.Unmisc class. So just log it and fallback to the old LegacyLinkedTransferQueue that works in all casesif ( LOGGER . isDebugEnabled ()) {LOGGER . debug ( "Unable to instance LinkedTransferQueue, fallback to LegacyLinkedTransferQueue" , t );}}return new LegacyLinkedTransferQueue < T >();}/*** Create a new unbound {@link BlockingQueue}** @param collection the collection which should get copied to the newly created {@link BlockingQueue}* @param itemClass the {@link Class} type which will be used as {@link BlockingQueue} items* @return queue the {@link BlockingQueue} implementation*/public static < T > BlockingQueue < T > createQueue ( Collection <? extends T > collection , Class < T > itemClass ) {// if we run in java >=7 its the best to just use the LinkedTransferQueue which// comes with java bundled. See #273if ( DetectionUtil . javaVersion () >= 7 ) {return new java . util . concurrent . LinkedTransferQueue < T >();}try {if ( useUnsafe ) {return new LinkedTransferQueue < T >( collection );}} catch ( Throwable t ) {// For whatever reason an exception was thrown while loading the LinkedTransferQueue//// This mostly happens because of a custom classloader or security policy that did not allow us to access the// com.sun.Unmisc class. So just log it and fallback to the old LegacyLinkedTransferQueue that works in all casesif ( LOGGER . isDebugEnabled ()) {LOGGER . debug ( "Unable to instance LinkedTransferQueue, fallback to LegacyLinkedTransferQueue" , t );}}return new LegacyLinkedTransferQueue < T >( collection );}}
QueueFactory修改后代码：12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273 public final class QueueFactory {private static final boolean useUnsafe = DetectionUtil . hasUnsafe ();private static final InternalLogger LOGGER = InternalLoggerFactory . getInstance ( QueueFactory . class );private QueueFactory () {// only use static methods!}/*** Create a new unbound {@link BlockingQueue}** @param itemClass the {@link Class} type which will be used as {@link BlockingQueue} items* @return queue the {@link BlockingQueue} implementation*/public static < T > BlockingQueue < T > createQueue ( Class < T > itemClass ) {// if we run in java >=7 its the best to just use the LinkedTransferQueue which// comes with java bundled. See #273if ( DetectionUtil . javaVersion () >= 6 ) {return new jsr166y . LinkedTransferQueue < T >();}try {if ( useUnsafe ) {return new LinkedTransferQueue < T >();}} catch ( Throwable t ) {// For whatever reason an exception was thrown while loading the LinkedTransferQueue//// This mostly happens because of a custom classloader or security policy that did not allow us to access the// com.sun.Unmisc class. So just log it and fallback to the old LegacyLinkedTransferQueue that works in all casesif ( LOGGER . isDebugEnabled ()) {LOGGER . debug ( "Unable to instance LinkedTransferQueue, fallback to LegacyLinkedTransferQueue" , t );}}return new LegacyLinkedTransferQueue < T >();}/*** Create a new unbound {@link BlockingQueue}** @param collection the collection which should get copied to the newly created {@link BlockingQueue}* @param itemClass the {@link Class} type which will be used as {@link BlockingQueue} items* @return queue the {@link BlockingQueue} implementation*/public static < T > BlockingQueue < T > createQueue ( Collection <? extends T > collection , Class < T > itemClass ) {// if we run in java >=7 its the best to just use the LinkedTransferQueue which// comes with java bundled. See #273if ( DetectionUtil . javaVersion () >= 6 ) {return new jsr166y . LinkedTransferQueue < T >();}try {if ( useUnsafe ) {return new LinkedTransferQueue < T >( collection );}} catch ( Throwable t ) {// For whatever reason an exception was thrown while loading the LinkedTransferQueue//// This mostly happens because of a custom classloader or security policy that did not allow us to access the// com.sun.Unmisc class. So just log it and fallback to the old LegacyLinkedTransferQueue that works in all casesif ( LOGGER . isDebugEnabled ()) {LOGGER . debug ( "Unable to instance LinkedTransferQueue, fallback to LegacyLinkedTransferQueue" , t );}}return new LegacyLinkedTransferQueue < T >( collection );}}
- socket.io client 升级到 0.9.6
- 支持将HTML/CSS/JS等文件
socketio.properties 增加配置项static，指定静态资源的相对路径 ，默认是static
若浏览器请求：http://localhost:9000/style/chat.css，则此文件相对路径为 static/style/chat.css，其它文件与此类似。
此属性便于打包，以及不再单独依赖Web容器
项目中，直接把网页文件拷贝到/source/static目录中，运行相应的JAVA文件（ChatServer.java） - 在Google Code 增加demo
下载聊天示范，下载后解压，双击 start.bat或者start.sh，浏览 http://localhost:9000/ 即可。
有时间，会聊聊更具体的实时Web一些心得，以及更为具体的示范等。
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