Feature #1282

Updated by Junxiao Shi about 6 years ago

Design a Data packet duplicate suppression mechanism on multicast face. 

 ccnd's algorithm is: 

 * Multicast datagram face should delay every outgoing Data packet for a random duration (on the order of 10ms).   
 * During the delay of a packet, if an identical packet is received on the face, cancel the send. 

 but it causes packet reordering and cannot adapt to link condition. 

 This Task is to design a better algorithm for duplicate suppression.   
 Category is currently "Faces", but the design MAY propose to put part of this feature in Forwarding/Tables if necessary.