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validation: only check input scripts once

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Previously, we would check failing input scripts twice when considering
a transaction for the mempool, in order to distinguish policy failures
from consensus failures. This allowed us both to provide a different
error message and to discourage peers for consensus failures. Because we
are no longer discouraging peers for consensus failures during tx relay,
and because checking a script can be expensive, only do this once.

Also renames non-mandatory-script-verify-flag error to
mempool-script-verify-flag-failed.
This commit is contained in:
Anthony Towns
2025-07-23 10:51:06 +10:00
parent 266dd0e10d
commit b29ae9efdf
10 changed files with 57 additions and 68 deletions
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2
test/functional/mempool_accept.py
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@@ -475,7 +475,7 @@ class MempoolAcceptanceTest(BitcoinTestFramework):
nested_anchor_spend.vout.append(CTxOut(nested_anchor_tx.vout[0].nValue - int(fee*COIN), script_to_p2wsh_script(CScript([OP_TRUE]))))
self.check_mempool_result(
result_expected=[{'txid': nested_anchor_spend.txid_hex, 'allowed': False, 'reject-reason': 'non-mandatory-script-verify-flag (Witness version reserved for soft-fork upgrades)'}],
result_expected=[{'txid': nested_anchor_spend.txid_hex, 'allowed': False, 'reject-reason': 'mempool-script-verify-flag-failed (Witness version reserved for soft-fork upgrades)'}],
rawtxs=[nested_anchor_spend.serialize().hex()],
maxfeerate=0,
)