Your question lacks some details. You talk about two servers, but don't
tell us if they are active-active, or just running one server at a time.
If they are active-active, we'd need to know how you are doing your session
replication between then servers.
If you are only running one server at a time, then Jens reply is a good
idea.
I personally prefer to handle sessions myself, with a cookie and a memcache
(yes, not really sessions at all), so I can easily scale. But that's just
a little side note. :)
Either way, this outside of GWT's responsibilities, but still happy to help.
On Thursday, 29 September 2022 at 6:24:33 pm UTC+10 Jens wrote:
> Use your browser dev tools to inspect the network request. You should
> check if server B sends back a session id cookie and that this session id
> cookie is transmitted back to the server for the second method that does
> getSession(false). If it doesn't or the session is already invalidated
> (either through code or through session timeout configuration on server B)
> then getSession(false) will return null.
>
> -- J.
>
> dhia.xd...@gmail.com schrieb am Mittwoch, 28. September 2022 um 12:21:36
> UTC+2:
>
>> I have a gwt app that is running when deployed on tomcat on server A
>> For some reason the same app when is deployed on tomcat on a server B has
>> a session issue
>>
>> We have Method 1 and Method 2 inside a servlet that extends
>> RemoteServiceServlet
>>
>> We have a method1 in which we do:
>> this.getThreadLocalRequest.getSession(true).setAttribute("myuserid",
>> myuserid)
>>
>> Then in a second method we do
>> this.getThreadLocalRequest.getSession(false).getAttribute("myuserid")
>> which throws a null pointer exception as getSession retuns null
>>
>> It is strange as this only happens on the server B
>> I have verified the tomcat config files like context.xml files and they
>> are identical
>>
>> I have printed currentThread.gtId() inside both methods and they are
>> different but as said no issue on server A.
>>
>>
>>
>>
>>
>>
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