RBF splice funding transactions#4427

Draft

jkczyz wants to merge 26 commits intolightningdevkit:mainfrom

jkczyz:2026-02-splicing-rbf

Commits on Feb 24, 2026

Stop persisting QuiescentAction and remove legacy code

jkczyz
and
claude
committed

Commits on Feb 25, 2026

f - remove QuiescentAction reading
jkczyz
committed
f - rename send_splice_init_internal
jkczyz
committed
Split InteractiveTxConstructor::new into outbound/inbound variants

jkczyz
and
claude
committed
f - remove initiator_first_message
jkczyz
committed
Adjust FundingContribution for acceptor
jkczyz
committed
f - rewrite docs
jkczyz
committed
Include change output weight in estimate_transaction_fee

jkczyz
and
claude
committed
Contribute to splice as acceptor

jkczyz
and
claude
committed
f - log feerate
jkczyz
committed
Refactor complete_interactive_funding_negotiation_for_both

jkczyz
and
claude
committed
Accept tx_init_rbf for pending splice transactions

jkczyz
and
claude
committed
Allow multiple RBF splice candidates in channel monitor

jkczyz
and
claude
committed
Add rbf_channel API for initiating splice RBF

jkczyz
and
claude
committed
f - allow stfu for splice RBF
jkczyz
committed
Send tx_init_rbf instead of splice_init when a splice is pending

jkczyz
and
claude
committed
Handle tx_ack_rbf on the initiator side

jkczyz
and
claude
committed
fixup! Handle tx_ack_rbf on the initiator side

jkczyz
and
claude
committed
Test end-to-end RBF splice initiator flow

jkczyz
and
claude
committed
Allow acceptor contribution to RBF splice via tx_init_rbf
jkczyz
committed
Preserve our funding contribution across counterparty RBF attempts

jkczyz
and
claude
committed
Add tests for re-using prior contribution on counterparty RBF

jkczyz
and
claude
committed
Add test for sequential RBF splice attempts

jkczyz
and
claude
committed
Consider prior contributions when filtering unique inputs/outputs

jkczyz
and
claude
committed
Filter prior contributions from SpliceFundingFailed events

jkczyz
and
claude
committed
Add tests for prior-contribution filtering in SpliceFundingFailed events

jkczyz
and
claude
committed

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RBF splice funding transactions#4427

RBF splice funding transactions#4427
jkczyz wants to merge 26 commits intolightningdevkit:mainfrom
jkczyz:2026-02-splicing-rbf

Commits on Feb 24, 2026

Stop persisting QuiescentAction and remove legacy code

Commits on Feb 25, 2026

f - remove QuiescentAction reading

f - rename send_splice_init_internal

Split InteractiveTxConstructor::new into outbound/inbound variants

f - remove initiator_first_message

Adjust FundingContribution for acceptor

f - rewrite docs

Include change output weight in estimate_transaction_fee

Contribute to splice as acceptor

f - log feerate

Refactor complete_interactive_funding_negotiation_for_both

Accept tx_init_rbf for pending splice transactions

Allow multiple RBF splice candidates in channel monitor

Add rbf_channel API for initiating splice RBF

f - allow stfu for splice RBF

Send tx_init_rbf instead of splice_init when a splice is pending

Handle tx_ack_rbf on the initiator side

fixup! Handle tx_ack_rbf on the initiator side

Test end-to-end RBF splice initiator flow

Allow acceptor contribution to RBF splice via tx_init_rbf

Preserve our funding contribution across counterparty RBF attempts

Add tests for re-using prior contribution on counterparty RBF

Add test for sequential RBF splice attempts

Consider prior contributions when filtering unique inputs/outputs

Filter prior contributions from SpliceFundingFailed events

Add tests for prior-contribution filtering in SpliceFundingFailed events