BULK DATA TRANSFER

摘要

This disclosure relates to network data communication. Some embodiments include initiating a network connection between an original source and an ultimate destination, transmitting a block of data from the original source to the ultimate destination on the network, requesting retransmission of lost blocks from the ultimate destination to the source and retransmitting the lost blocks from source to the ultimate destination. These embodiments further include measuring round-trip time of a retransmit request, the round-trip time measured from a time of transmission of a retransmit request from the ultimate destination to a time of reception at the ultimate destination after retransmission from the original source and setting the round-trip time as a minimum retransmission request time for the network connection, wherein the round-trip time includes latencies of the network connection and in data processes at the original source and at the ultimate destination.

主权项

1. A method for providing transfer of data over a network between a sender and a receiver, comprising:
at the sender, transmitting blocks of data identified by sequence numbers at a programmable injection rate as determined by an injection rate input; at the receiver, receiving the blocks of data transmitted by the sender and detecting blocks that have been lost in transmission based on the sequence numbers received; at the receiver, transmitting a retransmission request to the sender when a missing data block is detected and scheduling repeated transmission of the retransmission request based upon a predicted path round-trip time until the missing block is received; at the receiver, throttling the transmission of retransmission requests commensurate with the injection rate.