wallet: Minimal fix to restore conflicted transaction notifications

This fix is a based on the fix by Antoine Riard <ariard@student.42.fr> in
https://github.com/bitcoin/bitcoin/pull/18600.

Unlike that PR, which implements some new behavior, this just restores previous
wallet notification and status behavior for transactions removed from the
mempool because they conflict with transactions in a block. The behavior was
accidentally changed in two `CWallet::BlockConnected` updates:
a31be09bfd and
7e89994133 from
https://github.com/bitcoin/bitcoin/pull/16624, causing issue
https://github.com/bitcoin/bitcoin/issues/18325.

The change here could be improved and replaced with a more comprehensive
cleanup, so it includes a detailed comment explaining future considerations.

Fixes #18325

Co-authored-by: Antoine Riard <ariard@student.42.fr>
This commit is contained in:
Russell Yanofsky
2020-05-15 09:23:55 -04:00
parent e2f6866cca
commit b604c5c8b5
9 changed files with 55 additions and 19 deletions

View File

@@ -125,12 +125,7 @@ class NotificationsTest(BitcoinTestFramework):
# Bump tx2 as bump2 and generate a block on node 0 while
# disconnected, then reconnect and check for notifications on node 1
# about newly confirmed bump2 and newly conflicted tx2. Currently
# only the bump2 notification is sent. Ideally, notifications would
# be sent both for bump2 and tx2, which was the previous behavior
# before being broken by an accidental change in PR
# https://github.com/bitcoin/bitcoin/pull/16624. The bug is reported
# in issue https://github.com/bitcoin/bitcoin/issues/18325.
# about newly confirmed bump2 and newly conflicted tx2.
disconnect_nodes(self.nodes[0], 1)
bump2 = self.nodes[0].bumpfee(tx2)["txid"]
self.nodes[0].generatetoaddress(1, ADDRESS_BCRT1_UNSPENDABLE)
@@ -138,7 +133,7 @@ class NotificationsTest(BitcoinTestFramework):
assert_equal(tx2 in self.nodes[1].getrawmempool(), True)
connect_nodes(self.nodes[0], 1)
self.sync_blocks()
self.expect_wallet_notify([bump2])
self.expect_wallet_notify([bump2, tx2])
assert_equal(self.nodes[1].gettransaction(bump2)["confirmations"], 1)
# TODO: add test for `-alertnotify` large fork notifications