Total Order Anycast with three communication steps (based on Skeen's Algorithm). Establishes total order for a message sent to a subset of the cluster members (an anycast). Example: send a totally ordered message to {D,E} out of a membership of {A,B,C,D,E,F}.
Skeen's algorithm uses consensus among the anycast target members to find the currently highest sequence number (seqno) and delivers the message according to the order established by the seqnos.
@author Pedro Ruivo
@since 3.1