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Current Bitcoin Core's policy will reject a p2wsh as a dust if it's under 330 satoshis. A typical p2wsh output is 43 bytes big to which Core's `GetDustThreshold()` sums up a minimal spend of 67 bytes (even if a p2wsh witnessScript might be smaller). `dustRelayFee` is set to 3000 sat/kb, thus 110 * 3000 / 1000 = 330. As all time-sensitive outputs are p2wsh, a value of 330 sat is the lower bound desired to ensure good propagation of transactions. We give a bit margin to our counterparty and pick up 660 satoshis as an accepted `dust_limit_satoshis` upper bound. As this reasoning is tricky and error-prone we hardcode it instead of letting the user picking up a non-sense value. Further, this lower bound of 330 sats is also hardcoded as another constant (MIN_DUST_LIMIT_SATOSHIS) instead of being dynamically computed on feerate (derive_holder_dust_limit_satoshis`). Reducing risks of non-propagating transactions in casee of failing fee festimation. |
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| .. | ||
| chan_utils.rs | ||
| chanmon_update_fail_tests.rs | ||
| channel.rs | ||
| channelmanager.rs | ||
| features.rs | ||
| functional_test_utils.rs | ||
| functional_tests.rs | ||
| mod.rs | ||
| msgs.rs | ||
| onchaintx.rs | ||
| onion_route_tests.rs | ||
| onion_utils.rs | ||
| peer_channel_encryptor.rs | ||
| peer_handler.rs | ||
| reorg_tests.rs | ||
| wire.rs | ||