Add chain syncing via compact block filters (BIP 157)#828
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febyeji wants to merge 2 commits intolightningdevkit:mainfrom
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Add chain syncing via compact block filters (BIP 157)#828febyeji wants to merge 2 commits intolightningdevkit:mainfrom
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👋 Hi! This PR is now in draft status. |
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🔔 1st Reminder Hey @tnull! This PR has been waiting for your review. |
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Summary
Add chain syncing via compact block filters (BIP 157/158) using the
bip157crate. Closes #767.Introduces
CbfChainSource: a new chain backend that syncs wallet and Lightning state through compact block filters over the Bitcoin P2P network.Commits
1. Add BIP 157 compact block filter chain source
Core implementation, built up layer by layer:
bip157dependency andCbfSyncConfigconfigurationCbfChainSourcelifecycle (start/stop) with P2P broadcastConfirmtrait integrationCbfSyncConfig,set_chain_source_cbf)TestChainSource::Cbf,wait_for_cbf_sync)2. Add CBF integration tests and documentation
--test-threads=1(exclusive bitcoind P2P port)LDK_TEST_CHAIN_SOURCEenv var for test configurabilityDesign decisions
bip157crate #767 discussion). Uses block-level averages, which can underestimate during high congestion. (Percentile selection partially mitigates this?)sync_wallets()) + optional background sync viaBackgroundSyncConfig--test-threads=1(exclusive bitcoind P2P port access)