- catch more errors - improve behaviour on closing connections Change-Id: I3e2ed1b3b01b8151bb709d5a3735716742e0eec6 Reviewed-on: https://forge.frm2.tum.de/review/c/sine2020/secop/playground/+/23123 Tested-by: JenkinsCodeReview <bjoern_pedersen@frm2.tum.de> Reviewed-by: Enrico Faulhaber <enrico.faulhaber@frm2.tum.de> Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch>