Internet Direct (Indy) Version 9.0.2 Beta
TIdHTTPCustomSessionList.SessionTimeout
Specifies the time-to-live for a HTTP session.

property SessionTimeout: Integer;
Description
SessionTimeout is a Cardinal property that specifies the time-to-live for a persistent HTTP session expressed in milliseconds. SessionTimeout is used to determine when a TIdHTTPSession is stale (the LastTimeStamp indicates that the SessionTimeOut has expired).