Rewrite authentication flow (#2374)

hscontrol/types/common.go

@@ -102,6 +102,20 @@ func (su *StateUpdate) Empty() bool {
 	return false
 }
 
+func StateSelf(nodeID NodeID) StateUpdate {
+	return StateUpdate{
+		Type:        StateSelfUpdate,
+		ChangeNodes: []NodeID{nodeID},
+	}
+}
+
+func StateUpdatePeerAdded(nodeIDs ...NodeID) StateUpdate {
+	return StateUpdate{
+		Type:        StatePeerChanged,
+		ChangeNodes: nodeIDs,
+	}
+}
+
 func StateUpdateExpire(nodeID NodeID, expiry time.Time) StateUpdate {
 	return StateUpdate{
 		Type: StatePeerChangedPatch,