AaronFiore/electrum
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bump_dee and dscancel: call tx.estimated_size() after add_input_info().

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This is a workaround, see the FIXME. PartialTxInput.is_segwit() should
return the correct value, or raise if information is missing.
This commit is contained in:
ThomasV
2021-01-17 17:16:51 +01:00
parent 091d7e104a
commit f130cb53ce
2 changed files with 6 additions and 2 deletions
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4
electrum/transaction.py
View File

@@ -1171,6 +1171,10 @@ class PartialTxInput(TxInput, PSBTSection):
@classmethod
def from_txin(cls, txin: TxInput, *, strip_witness: bool = True) -> 'PartialTxInput':
# FIXME: if strip_witness is True, res.is_segwit() will return False,
# and res.estimated_size() will return an incorrect value. These methods
# will return the correct values after we call add_input_info(). (see dscancel and bump_fee)
# This is very fragile: the value returned by estimate_size() depends on the calling order.
res = PartialTxInput(prevout=txin.prevout,
script_sig=None if strip_witness else txin.script_sig,
nsequence=txin.nsequence,

4
electrum/wallet.py
View File

@@ -1394,12 +1394,12 @@ class Abstract_Wallet(AddressSynchronizer, ABC):
if tx.is_final():
raise CannotBumpFee(_('Transaction is final'))
new_fee_rate = quantize_feerate(new_fee_rate) # strip excess precision
old_tx_size = tx.estimated_size()
try:
# note: this might download input utxos over network
tx.add_info_from_wallet(self, ignore_network_issues=False)
except NetworkException as e:
raise CannotBumpFee(repr(e))
old_tx_size = tx.estimated_size()
old_fee = tx.get_fee()
assert old_fee is not None
old_fee_rate = old_fee / old_tx_size # sat/vbyte
@@ -1573,12 +1573,12 @@ class Abstract_Wallet(AddressSynchronizer, ABC):
if tx.is_final():
raise CannotDoubleSpendTx(_('Transaction is final'))
new_fee_rate = quantize_feerate(new_fee_rate) # strip excess precision
old_tx_size = tx.estimated_size()
try:
# note: this might download input utxos over network
tx.add_info_from_wallet(self, ignore_network_issues=False)
except NetworkException as e:
raise CannotDoubleSpendTx(repr(e))
old_tx_size = tx.estimated_size()
old_fee = tx.get_fee()
assert old_fee is not None
old_fee_rate = old_fee / old_tx_size # sat/vbyte