Transmitting data over a network

摘要

Data is transmitted in packets from a first station to a second station. A first data packet transmitted from the first station is modified to measure connection latency. The modified first data packet is identified by the second station, and the next data packet to be sent by the second station to the first station is identified and modified by the second station, and sent to the first station. Connection latency is determined at the first station with reference to
(a) the time at which the first station transmitted the first modified packet, and(b) the time at which the second modified packet was received.