Algorithm 4. DATA packet processing.

1: Whenever the DATA packet arrived for the PIT Lookup

2: if (PIT hit) then

3:  calculate Freshness $L_{(ck)}[T_{res}]$ – – – – – Eq. (5)

4: end if

5: if (cn=pcn and $L_{(ck)}[T_{res}]$ is non-transient then

6:  cache DATA packet

7: else if (cn=pcn and $L_{(ck)}[T_{res}]$ is transient) then

8:  fetch the new updated copy of content ck from producer

9:  forward to intended interface

10: else if (cn!=pcn and $L_{(ck)}[T_{res}]$ is transient or non-transient) then

11:  forward the DATA packet to the next station

12: else

13:  drop the Data Packet

14: end if