Yes, TCP has flow control and congestion avoidance. But it's a one size fits all model designed for unreliable connections of yesteryear. It's a trade off betw

Yes, TCP has flow control and congestion avoidance. But it's a one size fits all model designed for unreliable connections of yesteryear. It's a trade off between latency and throughput and not particularly good at either when network conditions get bad. UDP requires the application protocol to implement a flow control mechanism, but offers an opportunity to emphasize latency or throughput at the expense of the other.