users@grizzly.java.net

Re: cometd not performing properly

From: Joe Canon <jcanon.summit_at_gmail.com>
Date: Tue, 15 Nov 2011 08:15:04 -0800

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
> 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> 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>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> 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
>>>>>
>>>>>
>>>>
>>>
>>
>>
>
>