Jetserver is a high speed nio socket based multiplayer java game server written using Netty and Mike Rettig's Jetlang.It is specifically tuned for network based multiplayer games and supports TCP and UDP network protocols.

The leading letter "I" in interfaces is really annoying when you program against interfaces, which you almost always do, when dealing with Spring Framework powered applications. I'm evaluating JetServer as a core for a game I'm planning to develop, but I'll have to fork it and refactor each I[InterfaceName] to [InterfaceName] myself and then sync changes from the original project every time a bug is fixed or an interesting feature is added. This isn't a deal-breaker of course, but a nuisance I'm not looking forward to :( I do understand that such kind of change would break the API, and I also understand that prepending or not interface names with a letter "I" is a bit holywar-ish, but I just had to try :)

I run my Server from Eclipse and it works okay. Then I have create jar file using Elipse -> Create Executable Jar, Log4j configuration file is hardcoded. So this kind of error is shown

C:\Users\Nikolay\workspace\EvolutionServer\bin>java -jar Server.jar

main() function starts
Exception in thread "main" org.springframework.beans.factory.xml.XmlBeanDefiniti
onStoreException: Line 6 in XML document from class path resource [beans/beans.x
ml] is invalid; nested exception is org.xml.sax.SAXParseException; lineNumber: 6
; columnNumber: 120; cvc-elt.1: Cannot find the declaration of element 'beans'.
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadB
eanDefinitions(XmlBeanDefinitionReader.java:396)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBea
nDefinitions(XmlBeanDefinitionReader.java:334)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBea
nDefinitions(XmlBeanDefinitionReader.java:302)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReade
r.loadBeanDefinitions(AbstractBeanDefinitionReader.java:174)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReade
r.loadBeanDefinitions(AbstractBeanDefinitionReader.java:209)
        at org.springframework.beans.factory.support.AbstractBeanDefinitionReade
r.loadBeanDefinitions(AbstractBeanDefinitionReader.java:180)
        at org.springframework.context.annotation.ConfigurationClassBeanDefiniti
onReader.loadBeanDefinitionsFromImportedResources(ConfigurationClassBeanDefiniti
onReader.java:293)
        at org.springframework.context.annotation.ConfigurationClassBeanDefiniti
onReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefiniti
onReader.java:118)
        at org.springframework.context.annotation.ConfigurationClassBeanDefiniti
onReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:105)
        at org.springframework.context.annotation.ConfigurationClassPostProcesso
r.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:261)
        at org.springframework.context.annotation.ConfigurationClassPostProcesso
r.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:178)
        at org.springframework.context.support.AbstractApplicationContext.invoke
BeanFactoryPostProcessors(AbstractApplicationContext.java:617)
        at org.springframework.context.support.AbstractApplicationContext.refres
h(AbstractApplicationContext.java:446)
        at org.springframework.context.annotation.AnnotationConfigApplicationCon
text.<init>(AnnotationConfigApplicationContext.java:73)
        at org.evogame.server.Server.main(Server.java:23)
Caused by: org.xml.sax.SAXParseException; lineNumber: 6; columnNumber: 120; cvc-
elt.1: Cannot find the declaration of element 'beans'.
        at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAX
ParseException(ErrorHandlerWrapper.java:198)
        at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(Err
orHandlerWrapper.java:134)
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(
XMLErrorReporter.java:437)
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(
XMLErrorReporter.java:368)
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(
XMLErrorReporter.java:325)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleS
tartElement(XMLSchemaValidator.java:1897)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startEl
ement(XMLSchemaValidator.java:737)
        at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scan
StartElement(XMLNSDocumentScannerImpl.java:376)
        at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSCo
ntentDriver.scanRootElementHook(XMLNSDocumentScannerImpl.java:602)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
l$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3063)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$Prolog
Driver.next(XMLDocumentScannerImpl.java:881)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(X
MLDocumentScannerImpl.java:607)
        at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next
(XMLNSDocumentScannerImpl.java:116)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImp
l.scanDocument(XMLDocumentFragmentScannerImpl.java:488)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(X
ML11Configuration.java:835)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(X
ML11Configuration.java:764)
        at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.
java:123)
        at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.
java:240)
        at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Doc
umentBuilderImpl.java:300)
        at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocum
ent(DefaultDocumentLoader.java:75)
        at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadB
eanDefinitions(XmlBeanDefinitionReader.java:388)

    ... 14 more

beans.xml has following contents

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
    <import resource="classpath:/jetserver/beans/server-beans.xml"></import>
    <context:annotation-config />
</beans>

I have rebuild jetserver.jar and jetclient.jar and put new libraries in my project. Now I keep getting this error at server, so client cannot connect. My beans.xml was not updated.

AbstractApplicationContext ctx = new AnnotationConfigApplicationContext(SpringConfig.class);

Can you advice what is wrong?

2012-12-30 01:27:28,169 [SimpleSaxErrorHandler.java:47][WARN]:Ignored XML validation warning
org.xml.sax.SAXParseException: SchemaLocation: schemaLocation value = 'http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd   http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/util/spring-util-3.0.xsd' must have even number of URI's.
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.warning(ErrorHandlerWrapper.java:96)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:380)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:318)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(XMLSchemaValidator.java:423)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.storeLocations(XMLSchemaValidator.java:2365)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:1776)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(XMLSchemaValidator.java:711)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:400)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(XMLNSDocumentScannerImpl.java:626)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3104)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:921)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:647)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:140)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:511)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:808)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:119)
    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:232)
    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:284)
    at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:75)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:388)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.importBeanDefinitionResource(DefaultBeanDefinitionDocumentReader.java:255)
    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseDefaultElement(DefaultBeanDefinitionDocumentReader.java:196)
    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:181)
    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.doRegisterBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:140)
    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:111)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:493)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:390)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:174)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:209)
    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.importBeanDefinitionResource(DefaultBeanDefinitionDocumentReader.java:239)
    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseDefaultElement(DefaultBeanDefinitionDocumentReader.java:196)
    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:181)
    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.doRegisterBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:140)
    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:111)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:493)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:390)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:334)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:302)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:174)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:209)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:180)
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsFromImportedResources(ConfigurationClassBeanDefinitionReader.java:293)
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:118)
    at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:105)
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:261)
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:178)
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:617)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:446)
    at org.springframework.context.annotation.AnnotationConfigApplicationContext.<init>(AnnotationConfigApplicationContext.java:73)
    at org.server.Server.main(Server.java:23)

Hello again,

I am back to implement authentication of client at server. At client side I use this code

Where userId, accessToken, firstName and lastName come from Facebook authentication of the client. So then client provides this data to server who will check validity of the data and then accept or the reject the user.

public static void connect (String userId, String accessToken, String firstName, String lastName) {
        //disable previous listener
        if (future != null) {
            future.cancel();
            future.removeListener(futureListener);
        }

        //connect to server
        future = bootstrap.connect(new InetSocketAddress(host, port));

        final ChannelBuffer loginBuffer = getLoginBuffer("CONNECT_ROOM_REF_KEY", userId, accessToken, firstName, lastName);
        futureListener = new ChannelFutureListener() {
            @Override
            public void operationComplete(ChannelFuture future) throws Exception
            {
                Channel channel = future.getChannel();
                channel.write(loginBuffer);
            }
        };

        future.addListener(futureListener);
    }

    private static ChannelBuffer getLoginBuffer(String refKey, String userId, String accessToken, String firstName, String lastName) {
        //1 stands for capacity - number of bytes, big Endian
        ChannelBuffer opCode = ChannelBuffers.buffer(1);

        opCode.writeByte(Events.LOG_IN);
        //Creates a new composite buffer which wraps the readable bytes of the specified buffers without copying them. A modification on the content of the specified buffers will be visible to the returned buffer.
        ChannelBuffer buffer = ChannelBuffers.wrappedBuffer(opCode, NettyUtils.writeStrings(refKey, userId, accessToken, firstName, lastName));

        return buffer;
    }

The problem is that at server side I see LOG_IN event only inside compiled library jetserver-0.1.jar.

So how am I supposed to implement this kind of feature without touching the library?

when I excuted the main method of ZombieClient in example-games project,I got lots of exceptions like this:

Exception caught in class ZombieHandler java.net.SocketException: Network is unreachable

I guess this solution must be straightforward, but I don't get it.

I am using modification of Zombie example, where at Server public class SessionHandler extends DefaultSessionEventHandler implements GameCommandInterpreter

and at Client public class ClientHandler extends SimpleChannelUpstreamHandler

Hi menacher,

Thanks man for that great job you've done. But I little confused with changing room without closing current PlayerSession. How can I implement this? I tried:

        oldRoom.disconnectSession(playerSession);
        newRoom.onLogin(playerSession);
        newRoom.connectSession(playerSession);

But after this I have two NetworkEventHandlers for one player session. Hence I have duplication of events processing.

Are you sure that JetlangEventDispatcher.removeHandlersForSession works properly? I think it should be like that:

public synchronized boolean removeHandlersForSession(Session session)
{
    LOG.trace("Entered removeHandlersForSession for session {}", session);
    List<EventHandler> removeList = new ArrayList<EventHandler>();

    Collection<List<EventHandler>> eventHandlersList = new ArrayList<List<EventHandler>>(
            handlersByEventType.values());
    eventHandlersList.add(anyHandler);

    for (List<EventHandler> handlerList : eventHandlersList)
    {
        removeList.addAll(getHandlersToRemoveForSession(handlerList,session));
    }

    LOG.trace("Going to remove {} handlers for session: {}",
            removeList.size(), session);
    for (EventHandler handler : removeList)
    {
        removeHandler(handler);
    }

    return (removeList.size() > 0);
}

And GameRoomSession.disconnectSession should be like that:

public synchronized boolean disconnectSession(PlayerSession playerSession)
{
    final boolean removeHandlers = this.eventDispatcher.removeHandlersForSession(playerSession);
    return (removeHandlers & sessions.remove(playerSession));
}

For removing player session from room even if no handlers were removed.

public class ConnectGameRoom extends GameRoomSession {

    @Override
public void onLogin(PlayerSession playerSession)
{
    System.out.println(playerSession.getPlayer() == null);
    }

}

prints true. Why is it so?

Netty StringEncoder:

... @Override protected Object encode( ChannelHandlerContext ctx, Channel channel, Object msg) throws Exception { if (!(msg instanceof String)) { return msg; } return copiedBuffer(ctx.getChannel().getConfig().getBufferFactory().getDefaultOrder(), (String) msg, charset); } ...

NettyUtils: ChannelBuffer strBuffer = (ChannelBuffer) super.encode(null, null, msg);

The ChannelHandlerContext can not be null.

My version of writeString():

public static ChannelBuffer writeString(String msg) {
    ChannelBuffer buffer = null;
    try {
        ChannelBuffer stringBuffer = ChannelBuffers.dynamicBuffer();
        stringBuffer.writeBytes(msg.getBytes(CharsetUtil.UTF_8));
        int length = stringBuffer.readableBytes();
        ChannelBuffer lengthBuffer = ChannelBuffers.buffer(2);
        lengthBuffer.writeShort(length);
        buffer = ChannelBuffers.wrappedBuffer(lengthBuffer, stringBuffer);
    } catch (Exception e) {
        LOG.error("Error occurred while trying to write string to buffer: {}", e);
    }
    return buffer;
}

OR, which version of netty does not have this problem?...

Hi Abraham,

Could you please explain how to send events from player's session to game room's session? You wrote: The player session's listen on the Game Room session for any outgoing network data using event handlers. The player sessions have a reference to their Game Room using a parentGameRoom variable and can send data to it using onEvent. Do I understand correct that I have to do next steps in player's handler:

1. Call getSession() to get player's session.
2. Cast this session to PlayerSession.
3. Call getParentGameRoom of this PlayerSession.
4. Cast room to GameRoomSession.
5. Call onEvent() of this GameRoomSession.

I think this should be a little easier:

1. Call getSession() to get player's session.
2. Call onEvent() of this session.
3. GameRoomSession catches raised event and handles it.

In this case I have to add a custom handler to GameRoomSession.

Perhaps such a mechanism is already provided and I'm just inattentive?

Option 1 is not working NettyMessageBuffer outBuf = new NettyMessageBuffer(); outBuf.writeInt(GameRoomCommands.MY_EVENT.getCommand()); NetworkEvent networkEvent = Events.networkEvent(outBuf); gameRoom.sendBroadcast(networkEvent);

Option 2 is working! NettyMessageBuffer outBuf = new NettyMessageBuffer(); outBuf.writeInt(GameRoomCommands.MY_EVENT.getCommand()); NetworkEvent networkEvent = Events.networkEvent(outBuf);

Iterator itr = gameRoom.getSessions().iterator(); while (itr.hasNext()) { PlayerSession playerSession = (PlayerSession) itr.next(); playerSession.getTcpSender().sendMessage(networkEvent); }

This gameRoom is not is not registered in lookupService. Initially I have only one connectGameRoom which accepts all the incoming connection. (refKeyGameRoomMap.put("CONNECT_ROOM_REF_KEY", game.getConnectGameRoom());)

After enough players are connect, another gameRoom is created and sessions are added to it.

Could you change spring 3.x to spring 4.x ? I alway use jdk 8.x, so get error: Exception in thread "main" org.springframework.beans.factory.BeanDefinitionStoreException: Failed to load bean class: io.nadron.example.SpringConfig; nested exception is org.springframework.core.NestedIOException: ASM ClassReader failed to parse class file - probably due to a new Java class file version that isn't supported yet: class path resource [io/nadron/example/SpringConfig.class]; nested exception is java.lang.IllegalArgumentException at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:289) at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:223) at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:630) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:461) at org.springframework.context.annotation.AnnotationConfigApplicationContext.(AnnotationConfigApplicationContext.java:73) at io.nadron.example.GameServer.main(GameServer.java:20) Caused by: org.springframework.core.NestedIOException: ASM ClassReader failed to parse class file - probably due to a new Java class file version that isn't supported yet: class path resource [io/nadron/example/SpringConfig.class]; nested exception is java.lang.IllegalArgumentException at org.springframework.core.type.classreading.SimpleMetadataReader.(SimpleMetadataReader.java:56) at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:80) at org.springframework.core.type.classreading.CachingMetadataReaderFactory.getMetadataReader(CachingMetadataReaderFactory.java:102) at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:76) at org.springframework.context.annotation.ConfigurationClassParser.getImports(ConfigurationClassParser.java:298) at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:231) at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:154) at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:140) at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:282) ... 5 more Caused by: java.lang.IllegalArgumentException at org.springframework.asm.ClassReader.(Unknown Source) at org.springframework.asm.ClassReader.(Unknown Source) at org.springframework.asm.ClassReader.(Unknown Source) at org.springframework.core.type.classreading.SimpleMetadataReader.(SimpleMetadataReader.java:53) ... 13 more

if change jdk to 1.7 or 1.6 all right. thank!

i'am reading the nadron netty source code now,the only topic on wiki can help me is to old now. the topic in wiki "Jetserver internal details and how it works."is too old,can you write a new version for netty version?

why this happend when i use

for(Channel channel :channels)
{
        channel.writeAndFlush(msg);
}

the same message send two channel had the error data it likes two channel use the same channel . are you know how it opend?

2014-07-31 15:46:06,030 DEBUG LoggingHandler  - [id: 0x0e63b384, /192.168.1.13:52891 => /192.168.1.13:9010] RECEIVED(14B)
         +-------------------------------------------------+
         |  0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f |
+--------+-------------------------------------------------+----------------+
|00000000| 00 00 00 0e 00 65 00 01 00 04 63 5a 58 43       |.....e....cZXC  |
+--------+-------------------------------------------------+----------------+
2014-07-31 15:46:06,031 INFO  ChatMessageExecutor  - <<<<<<<<<<<<<<<<<<<<<<Name[192.168.1.15] say: cZXC>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
2014-07-31 15:46:06,032 DEBUG LoggingHandler  - [id: 0x3c51fa98, /192.168.1.13:52884 => /192.168.1.13:9010] WRITE(8B)
         +-------------------------------------------------+
         |  0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f |
+--------+-------------------------------------------------+----------------+
|00000000| 00 00 00 06 02 59 00 01                         |.....Y..        |
+--------+-------------------------------------------------+----------------+
2014-07-31 15:46:06,032 DEBUG LoggingHandler  - [id: 0x0e63b384, /192.168.1.13:52891 => /192.168.1.13:9010] WRITE(48B)
         +-------------------------------------------------+
         |  0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f |
+--------+-------------------------------------------------+----------------+
|00000000| 00 00 00 06 02 59 00 0c 00 00 31 39 32 2e 31 36 |.....Y....192.16|
|00000010| 38 2e 31 2e 31 35 00 04 00 0c 58 43 00 00 31 39 |8.1.15....XC..19|
|00000020| 32 2e 31 36 38 2e 31 2e 31 35 00 04 63 5a 58 43 |2.168.1.15..cZXC|
+--------+-------------------------------------------------+----------------+
2014-07-31 15:46:06,033 DEBUG LoggingHandler  - [id: 0x3c51fa98, /192.168.1.13:52884 => /192.168.1.13:9010] FLUSH
2014-07-31 15:46:06,033 DEBUG LoggingHandler  - [id: 0x0e63b384, /192.168.1.13:52891 => /192.168.1.13:9010] FLUSH