net: fix todo by propogating errors
Created by: aks-
@bnoordhuis I fixed the todo comments and made some changes. Please have a look and let me know if you want them amended
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Created by: aks-
@bnoordhuis I fixed the todo comments and made some changes. Please have a look and let me know if you want them amended