+ register map[uint16]bool
+ counter uint16
+}
+
+// This method should run as a constructor
+func (r *Registry) Initialize(seedsn uint16) {
+ r.register = make(map[uint16]bool)
+ r.counter = seedsn
+}
+
+// Reserves and returns the next free sequence number
+func (r *Registry) ReserveSequenceNumber() uint16 {
+ sequenceNumber := r.counter
+ r.register[sequenceNumber] = false
+ r.shift()
+ return sequenceNumber
+}
+
+// This function checks the validity of the given subscription id
+func (r *Registry) IsValidSequenceNumber(sn uint16) bool {
+ xapp.Logger.Debug("Registry map: %v", r.register)
+ if _, ok := r.register[sn]; ok {
+ return true
+ }
+ return false