java - "Temporarily" set session timeout for method - setMaxInactiveInterval -

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in web application user can call long running backend service (synchronous request). execution time service should not count websession timeout in code tried:

handleuserrequest() {   httpsession session = ...getsession(false);   int oldmaxinactiveinterval = session.getmaxinactiveinterval();   session.setmaxinactiveinterval(big_value);   <long running task>   session.setmaxinactiveinterval(oldmaxinactiveinterval); }

this not working expected. temporary session timeout not recognized "method call". user session times out according oldmaxinactiveinterval value.

is possible do, want do? ;-)

if oldmaxinactiveinterval defaultsession-timeout defined in web.xml example 60. means it's 60 minutes. when set using session#setmaxinactiveinterval() in second(1 mimnute)

it sets default session timeout web app

<session-config>     <session-timeout>60</session-timeout> // 60 minutes </session-config>

calling session.setmaxinactiveinterval() sets timeout particular session called on, , overrides default.

remember difference, - deployment descriptor version uses minutes, , session.setmaxinactiveinterval() uses seconds.

session.setmaxinactiveinterval(300); // sets 5 minutes

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