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Clement  
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 More options Apr 9, 2:49 pm
From: Clement <clement...@gmail.com>
Date: Thu, 9 Apr 2009 11:49:42 -0700 (PDT)
Local: Thurs, Apr 9 2009 2:49 pm
Subject: Blazeds compatibility?
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Has anyone tried porting Blazeds into appengine?

Blazeds runs on any servlet container if i'm not mistaken, and it
seems likely that it will be able to run on appengine too. It will be
interesting if it works.


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Luciano Broussal  
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 More options Apr 9, 2:58 pm
From: Luciano Broussal <luciano.brous...@gmail.com>
Date: Thu, 9 Apr 2009 20:58:54 +0200
Local: Thurs, Apr 9 2009 2:58 pm
Subject: Re: [appengine-java] Blazeds compatibility?
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Oh , yeah

What a great idea !

I thought to it but i'm not really sure that the whitelist classes is enough
....

For any Java third lib it's just a matter of  classes supported and allowed
by GAE according to the sandbox restrictions

But I'm definitely interested by the Blazeds support!

Nice catch Clement. +1

Thanks.

Luciano


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Clement  
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 More options Apr 9, 3:58 pm
From: Clement <clement...@gmail.com>
Date: Thu, 9 Apr 2009 12:58:47 -0700 (PDT)
Local: Thurs, Apr 9 2009 3:58 pm
Subject: Re: Blazeds compatibility?
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My first rough try failed. Although it seems like a fault at my end.
And from the trace, seems like appengine's container is based on
jetty.
Hope someone could get blazeds running.....Or maybe it has to be
stripped down in order to comply with the whitelist classes.

Could not instantiate listener flex.messaging.HttpFlexSession
java.lang.ClassNotFoundException: flex.messaging.HttpFlexSession
        at com.google.apphosting.runtime.security.UserClassLoader$1.run
(UserClassLoader.java:352)
        at com.google.apphosting.runtime.security.UserClassLoader$1.run
(UserClassLoader.java:347)
        at java.security.AccessController.doPrivileged(Native Method)
        at com.google.apphosting.runtime.security.UserClassLoader.findClass
(UserClassLoader.java:347)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at
com.google.apphosting.runtime.security.UserClassLoader.loadClassImpl
(UserClassLoader.java:434)
        at com.google.apphosting.runtime.security.UserClassLoader.loadClass
(UserClassLoader.java:380)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at org.mortbay.jetty.handler.ContextHandler.loadClass
(ContextHandler.java:1003)
        at org.mortbay.jetty.webapp.WebXmlConfiguration.initListener
(WebXmlConfiguration.java:629)
        at org.mortbay.jetty.webapp.WebXmlConfiguration.initWebXmlElement
(WebXmlConfiguration.java:367)
        at org.mortbay.jetty.webapp.WebXmlConfiguration.initialize
(WebXmlConfiguration.java:289)
        at org.mortbay.jetty.webapp.WebXmlConfiguration.configure
(WebXmlConfiguration.java:222)
        at org.mortbay.jetty.webapp.WebXmlConfiguration.configureWebApp
(WebXmlConfiguration.java:180)
        at org.mortbay.jetty.webapp.WebAppContext.startContext
(WebAppContext.java:1215)
        at org.mortbay.jetty.handler.ContextHandler.doStart
(ContextHandler.java:500)
        at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:
448)
        at org.mortbay.component.AbstractLifeCycle.start
(AbstractLifeCycle.java:40)
        at
com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler
(AppVersionHandlerMap.java:190)
        at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler
(AppVersionHandlerMap.java:167)
        at
com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceReques t
(JettyServletEngineAdapter.java:113)
        at com.google.apphosting.runtime.JavaRuntime.handleRequest
(JavaRuntime.java:235)
        at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$6.handleBlockingRequest(RuntimePb.java:4547)
        at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$6.handleBlockingRequest(RuntimePb.java:4545)
        at com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest
(BlockingApplicationHandler.java:24)
        at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:
359)
        at com.google.net.rpc.impl.Server$2.run(Server.java:792)
        at com.google.tracing.LocalTraceSpanRunnable.run
(LocalTraceSpanRunnable.java:56)
        at com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan
(LocalTraceSpanBuilder.java:489)
        at com.google.net.rpc.impl.Server.startRpc(Server.java:748)
        at com.google.net.rpc.impl.Server.processRequest(Server.java:340)
        at com.google.net.rpc.impl.ServerConnection.messageReceived
(ServerConnection.java:422)
        at com.google.net.rpc.impl.RpcConnection.parseMessages
(RpcConnection.java:319)
        at com.google.net.rpc.impl.RpcConnection.dataReceived
(RpcConnection.java:290)
        at com.google.net.async.Connection.handleReadEvent(Connection.java:
419)
        at com.google.net.async.EventDispatcher.processNetworkEvents
(EventDispatcher.java:733)
        at com.google.net.async.EventDispatcher.internalLoop
(EventDispatcher.java:207)
        at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:
101)
        at com.google.net.rpc.RpcService.runUntilServerShutdown
(RpcService.java:249)
        at com.google.apphosting.runtime.JavaRuntime$RpcRunnable.run
(JavaRuntime.java:373)
        at java.lang.Thread.run(Unknown Source)


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Clement  
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 More options Apr 9, 4:00 pm
From: Clement <clement...@gmail.com>
Date: Thu, 9 Apr 2009 13:00:37 -0700 (PDT)
Local: Thurs, Apr 9 2009 4:00 pm
Subject: Re: Blazeds compatibility?
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First try failed. Seems like appengine is using jetty though.

Could not instantiate listener flex.messaging.HttpFlexSession
java.lang.ClassNotFoundException: flex.messaging.HttpFlexSession
        at com.google.apphosting.runtime.security.UserClassLoader$1.run
(UserClassLoader.java:352)
        at com.google.apphosting.runtime.security.UserClassLoader$1.run
(UserClassLoader.java:347)
        at java.security.AccessController.doPrivileged(Native Method)
        at com.google.apphosting.runtime.security.UserClassLoader.findClass
(UserClassLoader.java:347)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at
com.google.apphosting.runtime.security.UserClassLoader.loadClassImpl
(UserClassLoader.java:434)
        at com.google.apphosting.runtime.security.UserClassLoader.loadClass
(UserClassLoader.java:380)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at org.mortbay.jetty.handler.ContextHandler.loadClass
(ContextHandler.java:1003)
        at org.mortbay.jetty.webapp.WebXmlConfiguration.initListener
(WebXmlConfiguration.java:629)
        at org.mortbay.jetty.webapp.WebXmlConfiguration.initWebXmlElement
(WebXmlConfiguration.java:367)
        at org.mortbay.jetty.webapp.WebXmlConfiguration.initialize
(WebXmlConfiguration.java:289)
        at org.mortbay.jetty.webapp.WebXmlConfiguration.configure
(WebXmlConfiguration.java:222)
        at org.mortbay.jetty.webapp.WebXmlConfiguration.configureWebApp
(WebXmlConfiguration.java:180)
        at org.mortbay.jetty.webapp.WebAppContext.startContext
(WebAppContext.java:1215)
        at org.mortbay.jetty.handler.ContextHandler.doStart
(ContextHandler.java:500)
        at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:
448)
        at org.mortbay.component.AbstractLifeCycle.start
(AbstractLifeCycle.java:40)
        at
com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler
(AppVersionHandlerMap.java:190)
        at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler
(AppVersionHandlerMap.java:167)
        at
com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceReques t
(JettyServletEngineAdapter.java:113)
        at com.google.apphosting.runtime.JavaRuntime.handleRequest
(JavaRuntime.java:235)
        at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$6.handleBlockingRequest(RuntimePb.java:4547)
        at com.google.apphosting.base.RuntimePb$EvaluationRuntime
$6.handleBlockingRequest(RuntimePb.java:4545)
        at com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest
(BlockingApplicationHandler.java:24)
        at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:
359)
        at com.google.net.rpc.impl.Server$2.run(Server.java:792)
        at com.google.tracing.LocalTraceSpanRunnable.run
(LocalTraceSpanRunnable.java:56)
        at com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan
(LocalTraceSpanBuilder.java:489)
        at com.google.net.rpc.impl.Server.startRpc(Server.java:748)
        at com.google.net.rpc.impl.Server.processRequest(Server.java:340)
        at com.google.net.rpc.impl.ServerConnection.messageReceived
(ServerConnection.java:422)
        at com.google.net.rpc.impl.RpcConnection.parseMessages
(RpcConnection.java:319)
        at com.google.net.rpc.impl.RpcConnection.dataReceived
(RpcConnection.java:290)
        at com.google.net.async.Connection.handleReadEvent(Connection.java:
419)
        at com.google.net.async.EventDispatcher.processNetworkEvents
(EventDispatcher.java:733)
        at com.google.net.async.EventDispatcher.internalLoop
(EventDispatcher.java:207)
        at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:
101)
        at com.google.net.rpc.RpcService.runUntilServerShutdown
(RpcService.java:249)
        at com.google.apphosting.runtime.JavaRuntime$RpcRunnable.run
(JavaRuntime.java:373)
        at java.lang.Thread.run(Unknown Source)


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Cole  
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 More options Apr 9, 4:07 pm
From: Cole <cole.ferr...@gmail.com>
Date: Thu, 9 Apr 2009 13:07:48 -0700 (PDT)
Local: Thurs, Apr 9 2009 4:07 pm
Subject: Re: Blazeds compatibility?
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So i added: <sessions-enabled>true</sessions-enabled> to my appengine-
web.xml

so i didn't get any error having to do with sessions...

but...

**** MessageBrokerServlet failed to initialize due to runtime
exception:   Error: java.lang.NoClassDefFoundError:
java.lang.management.ManagementFactory is a restricted class. Please
see the Google App Engine developer's guide for more details.
        at
com.google.apphosting.runtime.security.shared.stub.java.lang.management.Man agementFactory.<clinit>
(ManagementFactory.java)
        at

is what i get when i try to initialize the servlet that handles the
amf calls.

On Apr 9, 12:58 pm, Clement <clement...@gmail.com> wrote:


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Luciano Broussal  
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 More options Apr 9, 4:20 pm
From: Luciano Broussal <luciano.brous...@gmail.com>
Date: Thu, 9 Apr 2009 22:20:05 +0200
Local: Thurs, Apr 9 2009 4:20 pm
Subject: Re: [appengine-java] Re: Blazeds compatibility?
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;(

Nice try anyway !


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Clement  
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 More options Apr 9, 4:35 pm
From: Clement <clement...@gmail.com>
Date: Thu, 9 Apr 2009 13:35:10 -0700 (PDT)
Local: Thurs, Apr 9 2009 4:35 pm
Subject: Re: Blazeds compatibility?
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Perhaps we could try an alternative.

The main feature i like is the flash remoting (amf). There's a library
called openamf if i'm not mistaken. Maybe I'll give it a try.

On Apr 10, 4:20 am, Luciano Broussal <luciano.brous...@gmail.com>
wrote:


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Luciano Broussal  
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 More options Apr 10, 2:19 am
From: Luciano Broussal <luciano.brous...@gmail.com>
Date: Thu, 9 Apr 2009 23:19:04 -0700 (PDT)
Local: Fri, Apr 10 2009 2:19 am
Subject: Re: Blazeds compatibility?
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Yes,

The AMF remoting is cool and i'm interested by the streaming channel
for my own.

Thanks.

Luciano

On Apr 9, 10:35 pm, Clement <clement...@gmail.com> wrote:


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Brett Morgan  
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 More options Apr 10, 3:10 am
From: Brett Morgan <brett.mor...@gmail.com>
Date: Fri, 10 Apr 2009 17:10:49 +1000
Local: Fri, Apr 10 2009 3:10 am
Subject: Re: [appengine-java] Re: Blazeds compatibility?
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Luciano

The last time i played with GAE there was a restriction on the server side
in that it had about ten seconds to generate all of it's output before it
got toasted, and then output was dumped to the browser in one hit. I suspect
the time to die has been extended to somewhat, but even so, this still makes
streaming not implementable on GAE.

I understand that streaming would be very useful for real time updates to
flash/flex apps, but is there a way you can restructure your code and use
polling instead?

brett

On Fri, Apr 10, 2009 at 4:19 PM, Luciano Broussal <

--

Brett Morgan http://brett.morgan.googlepages.com/


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Luciano Broussal  
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 More options Apr 10, 3:46 am
From: Luciano Broussal <luciano.brous...@gmail.com>
Date: Fri, 10 Apr 2009 09:46:03 +0200
Local: Fri, Apr 10 2009 3:46 am
Subject: Re: [appengine-java] Re: Blazeds compatibility?
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Hi Brett,

Yeah my code is agnostic i need to rewrite a  little bunch of classes that
taking in charge the remoting stuff to switch to polling mode.

I just hope polling will not be a bottleneck  and will not had latency since
it's a multi player game needing refresh a 70 ms.

I'm more stuck for now on Multi-treading because i need it , i can also
refactor to make it single thread but not sure the game can scale with only
on thread managing all the game instances and i need timer task.

So for now i will continue  on my tomcat but i would be pleased to port it
on GAE java but i need to have answer to my questions. The game is early
stage too ;)

You gave me response for remoting , thanks for that Brett !

Now i need advice for how managing multi instances games with on thread and
moreover it will be flowded by polling remoting :( ...

Thanks

Luciano

But it would have been nice to change nothing

On Fri, Apr 10, 2009 at 9:10 AM, Brett Morgan <brett.mor...@gmail.com>wrote:


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Brett Morgan  
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 More options Apr 10, 3:53 am
From: Brett Morgan <brett.mor...@gmail.com>
Date: Fri, 10 Apr 2009 17:53:01 +1000
Local: Fri, Apr 10 2009 3:53 am
Subject: Re: [appengine-java] Re: Blazeds compatibility?
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Luciano,
In the python example apps there was a chat application that relied on ajax
polling. The areas to look at for making communicating between server
instances work is to make sure you are publishing your state to both the
disks (through which ever datastore api you feel comfortable with), but also
publish to the memcache servers. Being ram resident, the memcache servers
are faster to load data from.

brett

On Fri, Apr 10, 2009 at 5:46 PM, Luciano Broussal <

--

Brett Morgan http://brett.morgan.googlepages.com/


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Luciano Broussal  
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 More options Apr 10, 4:28 am
From: Luciano Broussal <luciano.brous...@gmail.com>
Date: Fri, 10 Apr 2009 10:28:22 +0200
Local: Fri, Apr 10 2009 4:28 am
Subject: Re: [appengine-java] Re: Blazeds compatibility?
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HI Brett,

You means with memcache you can manage different chat rooms on severals
servers like if room it one thread? like clounding programming?

Thanks for your advices Brett!

Luciano

On Fri, Apr 10, 2009 at 9:53 AM, Brett Morgan <brett.mor...@gmail.com>wrote:


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Brett Morgan  
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 More options Apr 10, 4:35 am
From: Brett Morgan <brett.mor...@gmail.com>
Date: Fri, 10 Apr 2009 18:35:20 +1000
Local: Fri, Apr 10 2009 4:35 am
Subject: Re: [appengine-java] Re: Blazeds compatibility?
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Luciano

Memcache, at it's simplest is just a key value store for strings. Of course,
you can encode object trees into strings, and thus communicate status
between server instances via memcache. Memcache, of course, is
probabilistic, in that what you store may or may not be there when you ask
for it again later...

On Fri, Apr 10, 2009 at 6:28 PM, Luciano Broussal <

...

read more »


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Luciano Broussal  
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 More options Apr 10, 4:47 am
From: Luciano Broussal <luciano.brous...@gmail.com>
Date: Fri, 10 Apr 2009 10:47:05 +0200
Local: Fri, Apr 10 2009 4:47 am
Subject: Re: [appengine-java] Re: Blazeds compatibility?
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cool a kind of teracota so  ? ;)

but it's container of objects or i can use each instance as a live game
container ?

BTW i have to analyze your hint about the chat room in Python GAE you gave
me.

Some work forward this week end  ;)

Thanks

Luciano

On Fri, Apr 10, 2009 at 10:35 AM, Brett Morgan <brett.mor...@gmail.com>wrote:

...

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Brett Morgan  
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 More options Apr 10, 5:01 am
From: Brett Morgan <brett.mor...@gmail.com>
Date: Fri, 10 Apr 2009 19:01:53 +1000
Local: Fri, Apr 10 2009 5:01 am
Subject: Re: [appengine-java] Re: Blazeds compatibility?
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TC is much more than just a key value store =)

On Fri, Apr 10, 2009 at 6:47 PM, Luciano Broussal <

...

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Luciano Broussal  
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 More options Apr 10, 5:08 am
From: Luciano Broussal <luciano.brous...@gmail.com>
Date: Fri, 10 Apr 2009 02:08:09 -0700 (PDT)
Local: Fri, Apr 10 2009 5:08 am
Subject: Re: Blazeds compatibility?
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Yes sure ;)

I know teracota but not memcache. you gave me feed to study now!

Thank you for my week end Brett ;)

On Apr 10, 11:01 am, Brett Morgan <brett.mor...@gmail.com> wrote:

...

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Manel  
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 More options Apr 14, 4:27 am
From: Manel <mbatl...@gmail.com>
Date: Tue, 14 Apr 2009 01:27:53 -0700 (PDT)
Local: Tues, Apr 14 2009 4:27 am
Subject: Re: Blazeds compatibility?
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> **** MessageBrokerServlet failed to initialize due to runtime
> exception:   Error: java.lang.NoClassDefFoundError:
> java.lang.management.ManagementFactory is a restricted class. Please
> see the Google App Engine developer's guide for more details.

there is a workaround for this error, disabling the use of MBeans in
BlazeDS. This can be done putting

<system>
   <manageable>false</manageable>

in the BlazeDS configuration (services-config.xml).

Anyway, after that i'm stuck with another error :

**** MessageBrokerServlet failed to initialize due to runtime
exception:   Exception: java.security.AccessControlException: access
denied (java.lang.RuntimePermission getClassLoader)
        at java.security.AccessControlContext.checkPermission(Unknown Source)
        at java.security.AccessController.checkPermission(Unknown Source)
        at java.lang.SecurityManager.checkPermission(Unknown Source)
        at java.lang.ClassLoader.getSystemClassLoader(Unknown Source)
        at flex.messaging.util.ClassUtil.classLoaderToString(ClassUtil.java:
213)
        at flex.messaging.MessageBroker.start(MessageBroker.java:338)
        at flex.messaging.MessageBrokerServlet.init(MessageBrokerServlet.java:
146)

I will try GraniteDS (http://www.graniteds.org/) as an alternative to
BlazeDS ...


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Sekhar  
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 More options Apr 14, 11:10 pm
From: Sekhar <sek...@allurefx.com>
Date: Tue, 14 Apr 2009 20:10:40 -0700 (PDT)
Local: Tues, Apr 14 2009 11:10 pm
Subject: Re: Blazeds compatibility?
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I'd tried the manageable-false setting too, but then GAE wouldn't do
anything on calls (no error, no action).

On Apr 14, 1:27 am, Manel <mbatl...@gmail.com> wrote:


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Gunjan  
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 More options Apr 15, 9:47 pm
From: Gunjan <gunjan.gang...@gmail.com>
Date: Wed, 15 Apr 2009 18:47:08 -0700 (PDT)
Local: Wed, Apr 15 2009 9:47 pm
Subject: Re: Blazeds compatibility?
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try putting this in appengine-web.xml:

<sessions-enabled>true</sessions-enabled>

This worked for me...

On Apr 14, 11:10 pm, Sekhar <sek...@allurefx.com> wrote:


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Clement  
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 More options Apr 17, 11:10 am
From: Clement <clement...@gmail.com>
Date: Fri, 17 Apr 2009 08:10:11 -0700 (PDT)
Local: Fri, Apr 17 2009 11:10 am
Subject: Re: Blazeds compatibility?
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Hi Gunjan,

Did u manage to get blazeds to work? Do u mind explaining the steps u
did?
Thanks.

On Apr 16, 9:47 am, Gunjan <gunjan.gang...@gmail.com> wrote:


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mjheying  
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 More options Apr 18, 1:34 am
From: mjheying <mjhey...@gmail.com>
Date: Fri, 17 Apr 2009 22:34:53 -0700 (PDT)
Local: Sat, Apr 18 2009 1:34 am
Subject: Re: Blazeds compatibility?
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I couldn't get BlazeDS working on a deployed app either. I would try
using Weborb as an alternative to BlazeDS. The developer of Weborb got
everything working today:

http://www.themidnightcoders.com/blog/2009/04/running-weborb-for-java...

And you can also deploy Silverlight apps with Weborb (if for some
reason you are using a java backend with Silverlight ).

-matt

On Apr 17, 11:10 am, Clement <clement...@gmail.com> wrote:


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Sekhar  
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 More options Apr 18, 2:44 am
From: Sekhar <sek...@allurefx.com>
Date: Fri, 17 Apr 2009 23:44:04 -0700 (PDT)
Local: Sat, Apr 18 2009 2:44 am
Subject: Re: Blazeds compatibility?
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Yes, this (new WebORB build) works! Thanks a lot Matt for the link!

-Sekhar

On Apr 17, 10:34 pm, mjheying <mjhey...@gmail.com> wrote:


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socalkiter  
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 More options Apr 29, 11:12 am
From: socalkiter <martinzold...@gmail.com>
Date: Wed, 29 Apr 2009 08:12:55 -0700 (PDT)
Local: Wed, Apr 29 2009 11:12 am
Subject: Re: Blazeds compatibility?
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BlazeDS 'remoting only' works on GAE/J, here's how

http://martinzoldano.blogspot.com

cheers

On Apr 9, 11:49 am, Clement <clement...@gmail.com> wrote:


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