Efficient mechanism for the transmission of multipath duplicate packets

A non-transitory machine readable medium storing a program for aggregating duplicate transmission control protocol (TCP) packets of a data stream that has been duplicated and sent over disjoint routing paths, wherein each duplicate pair of packets comprises a packet sequence number, within the data stream, unique to that duplicate pair, the program comprising sets of instructions for iteratively:

• generating a window of packet sequence numbers for the data stream starting with a lowest packet sequence number, of the data stream, that has not been received, by creating a list of TCP packet fragments, each fragment being defined by a packet sequence number and a memory location storing a payload fragment;
• receiving a TCP packet sent over one of a first routing path and a second, disjoint routing path;
• when the packet sequence number of the received TCP packet is outside the window or is a duplicate of a previously received TCP packet, dropping the received TCP packet;
• when the packet sequence number of the received TCP packet is within the window and is not a duplicate of a previously received TCP packet, storing the received TCP packet.