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IEEE/ICACT20260196 Slide.05
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Unlike HTTP, which operates over the reliable Transmission Control Protocol (TCP), CoAP is designed to run on the User Datagram Protocol (UDP) to minimize overhead in low-power and lossy networks (LLNs). It ensures reliability through (i) Confirmable (CON) messages (ii) Acknowl¡©edgments (ACKs) (iii) A retransmission timeout (RTO) - The duration a sender waits for an ACK before retransmitting a message based on observed round-trip times (RTTs) | |
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