handle SRV

git-svn-id: https://gnunet.org/svn/gnunet@33582 140774ce-b5e7-0310-ab8b-a85725594a96
-fix return value check


git-svn-id: https://gnunet.org/svn/gnunet@33583 140774ce-b5e7-0310-ab8b-a85725594a96
fix boxed value parser

git-svn-id: https://gnunet.org/svn/gnunet@33584 140774ce-b5e7-0310-ab8b-a85725594a96