Queue management in a forwarder

A queue management method, comprising:

• Selective Acknowledgments (SACK) examining to examine SACK blocks of a forwarder to selectively drop packets in a forward flow queue based on a reverse flow queue;
• and
• MultiPath Transmission Control Protocol (MPTCP) examining configured to perform:
• a first examining to examine multipath headers to recognize MPTCP flows based on a comparison between two subflows being a part of a same superflow;
• and
• a second examining to examine the reverse flow queue to determine if redundant data has been sent based on a result of the first examining,
• wherein a packet in the forward flow queue from a prior transmission is dropped from the forward flow queue sent from the forwarder to a receiver if a metadata of the packet does not match a metadata of an acknowledged packet in the reverse flow queue.

A non-transitory computer-readable recording medium recording a queue management program, the program causing a computer to perform:

• Selective Acknowledgments (SACK) examining to examine SACK blocks of a forwarder to selectively drop packets in a forward flow queue based on a reverse flow queue;
• and
• MultiPath Transmission Control Protocol (MPTCP) examining configured to perform:
• a first examining to examine multipath headers to recognize MPTCP flows based on a comparison between two subflows being a part of a same superflow;
• and
• a second examining to examine the reverse flow queue to determine if redundant data has been sent based on a result of the first examining,
• wherein a packet in the forward flow queue from a prior transmission is dropped from the forward flow queue sent from the forwarder to a receiver if a metadata of the packet does not match a metadata of an acknowledged packet in the reverse flow queue.