users@grizzly.java.net

Re: cometd not performing properly

From: Oleksiy Stashok <oleksiy.stashok_at_oracle.com>
Date: Mon, 21 Nov 2011 13:10:43 +0100

Hi Joe,

> Just to keep you informed, I was not able to get the same success from
> vanilla cometd in glassfish. That is, the cometd samples still do not
> work properly for me, even after changing the IPV4 setting and/or
> using jdk6. So I am trying to get atmosphere/bateux working and
> running into issues.
Ok.

>
> But I get exceptions whenever I deploy to Glassfish.
Which exception do you see?

Thanks.

WBR,
Alexey.

>
> Have you any suggestions for me?
>
> Thanks for your input,
>
> Joe
>
> On Tue, Nov 15, 2011 at 8:15 AM, Joe Canon <jcanon.summit_at_gmail.com
> <mailto:jcanon.summit_at_gmail.com>> wrote:
>
> Yes, Alexey.
>
> Yes. I see the same dropped messages in the cometd chat demo (as I
> mentioned in my first message to this list).
>
> I haven't gotten back to testing that using jdk6 fixes that issue
> yet. But that is my plan. I am thinking that I will be better off
> with the cometd provided in glassfish than with Atmosphere because
> of all the extra jars I have to use for Atmosphere/Cometd. By just
> having grizzly-cometd in my pom I can run cometd in GF. Is this a
> reasonable course?
>
> I still have to test that jdk6 (or jdk7 with the JVM option for
> IPV4) will correct the issue with dropped messages there.
>
> Unfortunately the work I am doing here is for a side-contract I
> have. My 9-5 gig is encroaching at the moment - and I won't get
> back to testing the cometd stuff until tomorrow night.
>
> Best Regards, and thanks for your help,
>
> Joe
>
>
> On Tue, Nov 15, 2011 at 7:55 AM, Oleksiy Stashok
> <oleksiy.stashok_at_oracle.com <mailto:oleksiy.stashok_at_oracle.com>>
> wrote:
>
> Hi Joe,
>
>
>
>> Not my app. Yours. I was having the issue with your demo for
>> Atmosphere Bayeux. It was the dojo-examples/chat/
>> application. That is the one that would drop messages on my
>> system under jdk7 but not jdk6. And not under jdk7 with
>> java.net.preferIPv4Stack=true. Although, as I mentioned, it
>> seems slow now.
> and you see the same problem with one of the Grizzly (w/o
> Atmosphere) cometd samples, right?
>
> WBR,
> Alexey.
>
>
>>
>> With jdk7 and not setting preferIOv4Stack, I would often see
>> "system: Connection to Server Broken" messages. I don't see
>> them under jdk6 or with the IPv4 setting. But it is very slow.
>>
>> I am running everything on a Lenovo laptop with i5, 8G ram
>> running Windows 7, 64 bit. I am also using glassfish
>> 3.1.2(b7), mysql cluster (ndb) database, eclipse Indigo.
>> Everything runs on localhost with no proxy (except
>> occasionally to look at traffic).
>>
>> HTH.
>>
>> WBR,
>>
>> Joe
>>
>> On Tue, Nov 15, 2011 at 12:34 AM, Oleksiy Stashok
>> <oleksiy.stashok_at_oracle.com
>> <mailto:oleksiy.stashok_at_oracle.com>> wrote:
>>
>> Hi Joe,
>>
>> can you pls. share your app (may be simplified version),
>> so I can reproduce the problem?
>>
>> Thank you.
>>
>> WBR,
>> Alexey.
>>
>>
>> On 11/15/2011 05:22 AM, Joe Canon wrote:
>>> I tried it using JDK7 with
>>> -Djava.net.preferIPv4Stack=true. This works! It is also
>>> slow. But it is working. Every message is sent and
>>> received.
>>>
>>> On Mon, Nov 14, 2011 at 8:04 PM, Joe Canon
>>> <jcanon.summit_at_gmail.com
>>> <mailto:jcanon.summit_at_gmail.com>> wrote:
>>>
>>> Hi Alexey,
>>>
>>> I tried the Atmosphere cometd demo today, as you
>>> suggested. The issue was the same - that messages
>>> would not make it from one client to the other in
>>> the chat.
>>>
>>> I was about to give up on it when I decided to try
>>> to run it under JDK 6 instead of JDK 7. Going to JDK
>>> 1.6.0_29 seems to have resolved the issue.
>>>
>>> Now that I am using jdk6, there are no dropped
>>> messages. It is kind of slow though. Sometimes 2 or
>>> 3 seconds before the message comes back from the
>>> server. This will be a show stopper for us. So I
>>> have to get this resolved or we can't use it. But I
>>> am happy to see some reliability.
>>>
>>> Does this make sense? Any idea what might be happening?
>>>
>>> Thanks and Regards,
>>>
>>> Joe
>>>
>>>
>>> On Mon, Nov 14, 2011 at 12:15 AM, Oleksiy Stashok
>>> <oleksiy.stashok_at_oracle.com
>>> <mailto:oleksiy.stashok_at_oracle.com>> wrote:
>>>
>>> Hi Joe,
>>>
>>> we'd suggest to use Atmosphere project for
>>> cometd support.
>>> Is it ok with you?
>>>
>>> WBR,
>>> Alexey.
>>>
>>>
>>>
>>> On 11/14/2011 01:43 AM, Joe Canon wrote:
>>>
>>> Hi All,
>>>
>>> I am having issues using the cometd
>>> implementation in GlassFish. None of the
>>> samples seem to work correctly for me. I've
>>> tried GF 3.1.1 and 3.1.2.
>>>
>>> For example, with the chat demo, I can join
>>> by enterring a username and clicking join.
>>> Then I can chat. But the messages I send
>>> sometimes show up at the client, and
>>> sometimes do not.
>>>
>>> Here's an example:
>>>
>>> client:
>>> message=[{"data": {"user": "joe", "chat":
>>> "rgte"}, "channel": "/chat/demo",
>>> "clientId": "pVJUfQl3gExtwMs+IAhAJQ==",
>>> "id": "15"}]
>>> server:
>>> [{"channel":"/chat/demo","successful":true,"clientId":"pVJUfQl3gExtwMs+IAhAJQ==","id":"15"}]
>>>
>>> client:
>>> message=[{"channel": "/meta/connect",
>>> "connectionType": "long-polling",
>>> "clientId": "pVJUfQl3gExtwMs+IAhAJQ==",
>>> "timestamp": "Mon, 14 Nov 2011 00:32:18
>>> GMT", "id": "16"}]
>>> server:
>>> headers only 200 OK. No JSON message.
>>>
>>> But I don't see my message at the client (I
>>> expected to see "rgte").
>>>
>>> I am running a single client in a browser. I
>>> also have been running the
>>> BayeuxExternalServlet. The messages that are
>>> sent from this servlet almost never get to
>>> the browser client. One of maybe a hundred
>>> or so.
>>>
>>> Note that I have comet running. It seems to
>>> be performing properly. But cometd is the
>>> problem.
>>>
>>> What could I be doing to cause this kind of
>>> behavior? I tried GF 3.1.1 and 3.1.2 (build
>>> 7). Same behavior.
>>>
>>> Any suggestions would be greatly appreciated.
>>>
>>> Thank you,
>>>
>>> Joe
>>>
>>>
>>>
>>>
>>
>>
>
>
>