TCP Sliding Window
The receiver advertises how many bytes of buffer it has free, and the sender may have at most that many unacknowledged bytes in flight; as ACKs arrive the window slides forward. This is flow control - protecting the receiver - and is separate from congestion control, which protects the network.
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The receiver advertises how many bytes of buffer it has free, and the sender may have at most that many unacknowledged bytes in flight; as ACKs arrive the window slides forward. This is flow control - protecting the receiver - and is separate from congestion control, which protects the network.
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