users@glassfish.java.net

Re: Glassfish_v2 DoS while using webservices

From: Kumar Jayanti <v.b.kumar.jayanti_at_oracle.com>
Date: Tue, 28 Feb 2012 14:55:00 +0530

when you say not available anymore what does that mean, is that a hang or does the client receive a 404 not-found ?. If its a hang, then you should take a thread dump and send it to this list.
On 27-Feb-2012, at 7:05 PM, forums_at_java.net wrote:

> Hello!
>
> I am no Java-Expert, but still I need to cope with a problem on a
> Glassfish-Server running Glassfishv2 or - as far as I understood so far -
> ApplicationServer 9.1.
>
> We are using the Glassfish-Server to provide database access via a webservice
> interface, meaning that another server can send datapackets containing
> webservice requests and the glassfish server then examines the mysql database
> that it is connected to and sends the data received to the other server as an
> answer to its request. So far, so good.
>
> The problem that I see is, that after some time, the glassfish-server's
> webservice is not available anymore. The glassfish-server receives
> webservice-requests quite often(~130 times per second) and after some
> minutes(less than 5 minutes in general), the webservice is not available
> anymore. Anyway, I can still do a "/opt/glassfish/bin/asadmin
> ping-connection-pool", which returns that the ping was done successfully.
>
> I am only able to reproduce this error with one specific
> webservice-questioning program. If I use another one, that also asks for the
> webservices available, I can't make it crash - even after one full weekend of
> testing.
>
> My question is rather where to search for an error than that I'd be waiting
> for a solution of my problem. I simply don't know, where to look and what to
> check. I'd also like to know, if there are any "common" points, that should
> be adjusted if a glassfish server denies to answer to webservice-requests...
>
>
>
> I'd be really happy to receive any single hint.
>
> Best regards from Germany,
>
> Dennis
>
>
> --
>
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>
> View Post: http://forums.java.net/node/883810
>
>