Queue Burst EAR99
Queue Burst is XO Defense's offline message queue protocol with deterministic delivery guarantees. It provides guaranteed ordering and deduplication across intermittent connectivity windows, ensuring that messages are delivered exactly once and in the correct sequence regardless of transport interruptions. Queue Burst implements priority scheduling, assigning transmission priority based on message type: P139 emergency beacons receive highest priority, followed by command messages, SatPay transactions, and routine reporting. During a connectivity window (satellite pass, cellular coverage, radio contact), Queue Burst transmits the queued messages in priority order, maximizing the operational value of limited bandwidth.
How XO Defense Addresses This
Queue Burst is the store-and-forward engine that underpins XO Defense's DDIL resilience. When connectivity is denied, messages queue locally with full integrity. When a connectivity window opens, Queue Burst batches and transmits queued Mustard Envelopes in priority order. The protocol maintains transmission state, so if a connectivity window closes mid-burst, the remaining messages are retained for the next window without duplication. Queue Burst's deterministic delivery guarantees are essential for Mustard Chain integrity — transaction records must arrive in the correct order to maintain hash chain validity.
Learn how XO Defense's 25-byte protocol stack operates in the most constrained environments.
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