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authorglozow <gloriajzhao@gmail.com>2021-08-20 13:01:07 +0100
committerglozow <gloriajzhao@gmail.com>2021-08-24 15:47:21 +0100
commitbadb9b11a6f7e1e693cecc8cd5aae55a197d70e2 (patch)
tree03ac91f1d6279ad47badf384d131de33cf6749b5 /src/util/rbf.h
parente0df41d7d584b854c2914d4afe7b21e0af3fbf69 (diff)
call SignalsOptInRBF instead of checking all inputs
Diffstat (limited to 'src/util/rbf.h')
-rw-r--r--src/util/rbf.h11
1 files changed, 9 insertions, 2 deletions
diff --git a/src/util/rbf.h b/src/util/rbf.h
index 6a20b37de5..4eb44b904f 100644
--- a/src/util/rbf.h
+++ b/src/util/rbf.h
@@ -11,8 +11,15 @@ class CTransaction;
static const uint32_t MAX_BIP125_RBF_SEQUENCE = 0xfffffffd;
-// Check whether the sequence numbers on this transaction are signaling
-// opt-in to replace-by-fee, according to BIP 125
+/** Check whether the sequence numbers on this transaction are signaling
+* opt-in to replace-by-fee, according to BIP 125.
+* Allow opt-out of transaction replacement by setting
+* nSequence > MAX_BIP125_RBF_SEQUENCE (SEQUENCE_FINAL-2) on all inputs.
+*
+* SEQUENCE_FINAL-1 is picked to still allow use of nLockTime by
+* non-replaceable transactions. All inputs rather than just one
+* is for the sake of multi-party protocols, where we don't
+* want a single party to be able to disable replacement. */
bool SignalsOptInRBF(const CTransaction &tx);
#endif // BITCOIN_UTIL_RBF_H