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📄️ Cancel All Orders After X

CancelAllOrdersAfter provides a 'Dead Man's Switch' mechanism to protect the client from network malfunction, extreme latency or unexpected matching engine downtime. The client can send a request with a timeout (in seconds), that will start a countdown timer which will cancel *all* client orders when the timer expires. The client has to keep sending new requests to push back the trigger time, or deactivate the mechanism by specifying a timeout of 0. If the timer expires, all orders are cancelled and then the timer remains disabled until the client provides a new (non-zero) timeout.