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test/functional/test_framework/test_node.py
| Show First 20 Lines • Show All 359 Lines • ▼ Show 20 Lines | class TestNode(): | ||||
| def relay_fee(self, cached=True): | def relay_fee(self, cached=True): | ||||
| if not self.relay_fee_cache or not cached: | if not self.relay_fee_cache or not cached: | ||||
| self.relay_fee_cache = self.getnetworkinfo()["relayfee"] | self.relay_fee_cache = self.getnetworkinfo()["relayfee"] | ||||
| return self.relay_fee_cache | return self.relay_fee_cache | ||||
| def calculate_fee(self, tx): | def calculate_fee(self, tx): | ||||
| # Relay fee is in satoshis per KB. Thus the 1000, and the COIN added | """ Estimate the necessary fees (in sats) for an unsigned CTransaction assuming: | ||||
| # to get back to an amount of satoshis. | - the current relayfee on node | ||||
| - all inputs are compressed-key p2pkh, and will be signed ecdsa or schnorr | |||||
| - all inputs currently unsigned (empty scriptSig) | |||||
| """ | |||||
| billable_size_estimate = tx.billable_size() | billable_size_estimate = tx.billable_size() | ||||
| # Add some padding for signatures | # Add some padding for signatures / public keys | ||||
| # NOTE: Fees must be calculated before signatures are added, | # 107 = length of PUSH(longest_sig = 72 bytes), PUSH(pubkey = 33 bytes) | ||||
| # so they will never be included in the billable_size above. | billable_size_estimate += len(tx.vin) * 107 | ||||
| billable_size_estimate += len(tx.vin) * 81 | |||||
| # relay_fee gives a value in BCH per kB. | |||||
| return int(self.relay_fee() / 1000 * billable_size_estimate * COIN) | return int(self.relay_fee() / 1000 * billable_size_estimate * COIN) | ||||
| def calculate_fee_from_txid(self, txid): | def calculate_fee_from_txid(self, txid): | ||||
| ctx = FromHex(CTransaction(), self.getrawtransaction(txid)) | ctx = FromHex(CTransaction(), self.getrawtransaction(txid)) | ||||
| return self.calculate_fee(ctx) | return self.calculate_fee(ctx) | ||||
| def add_p2p_connection(self, p2p_conn, *, wait_for_verack=True, **kwargs): | def add_p2p_connection(self, p2p_conn, *, wait_for_verack=True, **kwargs): | ||||
| """Add a p2p connection to the node. | """Add a p2p connection to the node. | ||||
| ▲ Show 20 Lines • Show All 106 Lines • Show Last 20 Lines | |||||