* OnData and OnHeaders events implemented

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@26717 3ad0048d-3df7-0310-abae-a5850022a9f2
* Demo for OnData and OnHeaders events

git-svn-id: http://svn.freepascal.org/svn/fpc/trunk@26718 3ad0048d-3df7-0310-abae-a5850022a9f2