* The previous one-way hearbeat was elegant, but comlicated to understand and without giving much extra value compared to this approach. * The previous one-way heartbeat have some kind of bug when joining several (10-20) nodes at approximately the same time (but not exactly the same time) with a false failure detection triggered by the extra heartbeat, which would not heal. * This ping-pong approach will increase network traffic slightly, but heartbeat messages are small and each node is limited to monitor (default) 5 peers. |
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