TCP Reliable Delivery
Every byte gets a sequence number; the receiver acknowledges the next byte it expects, and the sender retransmits anything unacknowledged after a timeout derived from smoothed RTT measurements. Duplicate ACKs and SACK blocks let the sender resend just the missing segment without waiting for the timer.
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Every byte gets a sequence number; the receiver acknowledges the next byte it expects, and the sender retransmits anything unacknowledged after a timeout derived from smoothed RTT measurements. Duplicate ACKs and SACK blocks let the sender resend just the missing segment without waiting for the timer.
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