4 ms·

I had always associated the two together. There is one "window" slot in a TCP packet. How does the sender know the receiver's receive window separately from the

I had always associated the two together. There is one "window" slot in a TCP packet. How does the sender know the receiver's receive window separately from the congestion window?

bboreham 11y ago
The sender maintains cwnd as a completely separate parameter that does not go in any packets. It doesn't "know" anything; the value of this parameter is arrived at by some set of heuristics. See for instance https://en.wikipedia.org/wiki/TCP_congestion-avoidance_algorithm https://en.wikipedia.org/wiki/TCP_congestion-avoidance_algor...