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Features Can handle very large bandwidth-delay product. Tolerates lengthy, irregular interruption of link without data loss. No reliance on stability of round-trip time. Minimizes overhead on low-capacity and/or asymmetric links. Selective NAKs. Aggregation of small client service data units into larger blocks, acknowledged at block granularity. Accelerated retransmission: multiple checkpoints per transmitted block, or interim reports prior to reception of checkpoint. Partial reliability: checkpointing and retransmission for only the first N bytes of a block, and N can be zero. Extension mechanism is built into the specification. Currently defined extension segments implement security. |