How It Works
Three algorithms work together
FastTCP® dynamically adjusts data transfer rates to match congestion levels
FastStart™ intelligently accelerates TCP Slow-start based on delay-jitter of the connection
HyperBurst™ dynamically adjusts receiver windows to maximize throughput
Dynamic Window Sizing
FastStart
- Larger initial window size
- Based on client RWND, RTT, window smoothing algorithm
HyperBurst
- Larger window than RWND during file transfer
- Based on client RWND, RTT, RTT jitter, smoothing algorithm
- Only used when delay-bandwidth product greater than RWND
Intelligent Congestion Control
FastTCP
- Measures RTT on every packet
- Prevents packet loss
- Based on reducing window as delay increases
- Recovers quickly from packet loss
- Determined by delay metric
