def verify_unsigned_tx(self, txd): tx_utxo_set = set(ins['outpoint']['hash'] + ':' + str( ins['outpoint']['index']) for ins in txd['ins']) # complete authentication: check the tx input uses the authing pubkey input_utxo_data = jm_single().bc_interface.query_utxo_set( list(tx_utxo_set)) if None in input_utxo_data: return False, 'some utxos already spent or not confirmed yet' input_addresses = [u['address'] for u in input_utxo_data] if btc.pubtoaddr( self.i_utxo_pubkey, get_p2pk_vbyte()) not in input_addresses: return False, "authenticating bitcoin address is not contained" my_utxo_set = set(self.utxos.keys()) if not tx_utxo_set.issuperset(my_utxo_set): return False, 'my utxos are not contained' my_total_in = sum([va['value'] for va in self.utxos.values()]) self.real_cjfee = calc_cj_fee( self.ordertype, self.cjfee, self.cj_amount) expected_change_value = ( my_total_in - self.cj_amount - self.txfee + self.real_cjfee) log.debug('potentially earned = {}'.format( self.real_cjfee - self.txfee)) log.debug('mycjaddr, mychange = {}, {}'.format( self.cj_addr, self.change_addr)) times_seen_cj_addr = 0 times_seen_change_addr = 0 for outs in txd['outs']: addr = btc.script_to_address(outs['script'], get_p2pk_vbyte()) if addr == self.cj_addr: times_seen_cj_addr += 1 if outs['value'] != self.cj_amount: return False, 'Wrong cj_amount. I expect ' + str( self.cj_amount) if addr == self.change_addr: times_seen_change_addr += 1 if outs['value'] != expected_change_value: return False, 'wrong change, i expect ' + str( expected_change_value) if times_seen_cj_addr != 1 or times_seen_change_addr != 1: fmt = ('cj or change addr not in tx ' 'outputs once, #cjaddr={}, #chaddr={}').format return False, (fmt(times_seen_cj_addr, times_seen_change_addr)) return True, None
def verify_unsigned_tx(self, txd): tx_utxo_set = set(ins['outpoint']['hash'] + ':' + str(ins['outpoint']['index']) for ins in txd['ins']) # complete authentication: check the tx input uses the authing pubkey input_utxo_data = jm_single().bc_interface.query_utxo_set( list(tx_utxo_set)) if None in input_utxo_data: return False, 'some utxos already spent or not confirmed yet' input_addresses = [u['address'] for u in input_utxo_data] if btc.pubtoaddr(self.i_utxo_pubkey, get_p2pk_vbyte()) not in input_addresses: return False, "authenticating bitcoin address is not contained" my_utxo_set = set(self.utxos.keys()) if not tx_utxo_set.issuperset(my_utxo_set): return False, 'my utxos are not contained' my_total_in = sum([va['value'] for va in self.utxos.values()]) self.real_cjfee = calc_cj_fee(self.ordertype, self.cjfee, self.cj_amount) expected_change_value = (my_total_in - self.cj_amount - self.txfee + self.real_cjfee) log.debug('potentially earned = {}'.format(self.real_cjfee - self.txfee)) log.debug('mycjaddr, mychange = {}, {}'.format(self.cj_addr, self.change_addr)) times_seen_cj_addr = 0 times_seen_change_addr = 0 for outs in txd['outs']: addr = btc.script_to_address(outs['script'], get_p2pk_vbyte()) if addr == self.cj_addr: times_seen_cj_addr += 1 if outs['value'] != self.cj_amount: return False, 'Wrong cj_amount. I expect ' + str( self.cj_amount) if addr == self.change_addr: times_seen_change_addr += 1 if outs['value'] != expected_change_value: return False, 'wrong change, i expect ' + str( expected_change_value) if times_seen_cj_addr != 1 or times_seen_change_addr != 1: fmt = ('cj or change addr not in tx ' 'outputs once, #cjaddr={}, #chaddr={}').format return False, (fmt(times_seen_cj_addr, times_seen_change_addr)) return True, None
def verify_unsigned_tx(self, txd): tx_utxo_set = set(ins['outpoint']['hash'] + ':' + str( ins['outpoint']['index']) for ins in txd['ins']) my_utxo_set = set(self.utxos.keys()) if not tx_utxo_set.issuperset(my_utxo_set): return False, 'my utxos are not contained' my_total_in = sum([va['value'] for va in self.utxos.values()]) self.real_cjfee = calc_cj_fee( self.ordertype, self.cjfee, self.cj_amount) expected_change_value = ( my_total_in - self.cj_amount - self.txfee + self.real_cjfee) log.info('potentially earned = {}'.format( self.real_cjfee - self.txfee)) log.debug('mycjaddr, mychange = {}, {}'.format( self.cj_addr, self.change_addr)) times_seen_cj_addr = 0 times_seen_change_addr = 0 for outs in txd['outs']: addr = btc.script_to_address(outs['script'], get_p2pk_vbyte()) if addr == self.cj_addr: times_seen_cj_addr += 1 if outs['value'] != self.cj_amount: return False, 'Wrong cj_amount. I expect ' + str( self.cj_amount) if addr == self.change_addr: times_seen_change_addr += 1 if outs['value'] != expected_change_value: return False, 'wrong change, i expect ' + str( expected_change_value) if times_seen_cj_addr != 1 or times_seen_change_addr != 1: fmt = ('cj or change addr not in tx ' 'outputs once, #cjaddr={}, #chaddr={}').format return False, (fmt(times_seen_cj_addr, times_seen_change_addr)) return True, None
def verify_unsigned_tx(self, txd): tx_utxo_set = set(ins['outpoint']['hash'] + ':' + str(ins['outpoint']['index']) for ins in txd['ins']) my_utxo_set = set(self.utxos.keys()) if not tx_utxo_set.issuperset(my_utxo_set): return False, 'my utxos are not contained' my_total_in = sum([va['value'] for va in self.utxos.values()]) self.real_cjfee = calc_cj_fee(self.ordertype, self.cjfee, self.cj_amount) expected_change_value = (my_total_in - self.cj_amount - self.txfee + self.real_cjfee) log.debug('potentially earned = {}'.format(self.real_cjfee - self.txfee)) log.debug('mycjaddr, mychange = {}, {}'.format(self.cj_addr, self.change_addr)) times_seen_cj_addr = 0 times_seen_change_addr = 0 for outs in txd['outs']: addr = btc.script_to_address(outs['script'], get_p2pk_vbyte()) if addr == self.cj_addr: times_seen_cj_addr += 1 if outs['value'] != self.cj_amount: return False, 'Wrong cj_amount. I expect ' + str( self.cj_amount) if addr == self.change_addr: times_seen_change_addr += 1 if outs['value'] != expected_change_value: return False, 'wrong change, i expect ' + str( expected_change_value) if times_seen_cj_addr != 1 or times_seen_change_addr != 1: fmt = ('cj or change addr not in tx ' 'outputs once, #cjaddr={}, #chaddr={}').format return False, (fmt(times_seen_cj_addr, times_seen_change_addr)) return True, None
def recv_txio(self, nick, utxo_list, cj_pub, change_addr): if nick not in self.nonrespondants: log.debug(('recv_txio => nick={} not in ' 'nonrespondants {}').format(nick, self.nonrespondants)) return self.utxos[nick] = utxo_list order = self.db.execute( 'SELECT ordertype, txfee, cjfee FROM ' 'orderbook WHERE oid=? AND counterparty=?', (self.active_orders[nick], nick)).fetchone() utxo_data = jm_single().bc_interface.query_utxo_set(self.utxos[nick]) if None in utxo_data: log.debug(('ERROR outputs unconfirmed or already spent. ' 'utxo_data={}').format(pprint.pformat(utxo_data))) # when internal reviewing of makers is created, add it here to # immediately quit return # ignore this message, eventually the timeout thread will recover total_input = sum([d['value'] for d in utxo_data]) real_cjfee = calc_cj_fee(order['ordertype'], order['cjfee'], self.cj_amount) self.outputs.append({ 'address': change_addr, 'value': total_input - self.cj_amount - order['txfee'] + real_cjfee }) fmt = ('fee breakdown for {} totalin={:d} ' 'cjamount={:d} txfee={:d} realcjfee={:d}').format log.debug( fmt(nick, total_input, self.cj_amount, order['txfee'], real_cjfee)) cj_addr = btc.pubtoaddr(cj_pub, get_p2pk_vbyte()) self.outputs.append({'address': cj_addr, 'value': self.cj_amount}) self.cjfee_total += real_cjfee self.maker_txfee_contributions += order['txfee'] self.nonrespondants.remove(nick) if len(self.nonrespondants) > 0: log.debug('nonrespondants = ' + str(self.nonrespondants)) return self.all_responded = True with self.timeout_lock: self.timeout_lock.notify() log.debug('got all parts, enough to build a tx') self.nonrespondants = list(self.active_orders.keys()) my_total_in = sum( [va['value'] for u, va in self.input_utxos.iteritems()]) if self.my_change_addr: #Estimate fee per choice of next/3/6 blocks targetting. estimated_fee = estimate_tx_fee(len(sum(self.utxos.values(), [])), len(self.outputs) + 2) log.debug("Based on initial guess: " + str(self.total_txfee) + ", we estimated a fee of: " + str(estimated_fee)) #reset total self.total_txfee = estimated_fee my_txfee = max(self.total_txfee - self.maker_txfee_contributions, 0) my_change_value = (my_total_in - self.cj_amount - self.cjfee_total - my_txfee) #Since we could not predict the maker's inputs, we may end up needing #too much such that the change value is negative or small. Note that #we have tried to avoid this based on over-estimating the needed amount #in SendPayment.create_tx(), but it is still a possibility if one maker #uses a *lot* of inputs. if self.my_change_addr and my_change_value <= 0: raise ValueError("Calculated transaction fee of: " + str(self.total_txfee) + " is too large for our inputs;Please try again.") elif self.my_change_addr and my_change_value <= jm_single( ).DUST_THRESHOLD: log.debug("Dynamically calculated change lower than dust: " + str(my_change_value) + "; dropping.") self.my_change_addr = None my_change_value = 0 log.debug( 'fee breakdown for me totalin=%d my_txfee=%d makers_txfee=%d cjfee_total=%d => changevalue=%d' % (my_total_in, my_txfee, self.maker_txfee_contributions, self.cjfee_total, my_change_value)) if self.my_change_addr is None: if my_change_value != 0 and abs(my_change_value) != 1: # seems you wont always get exactly zero because of integer # rounding so 1 satoshi extra or fewer being spent as miner # fees is acceptable log.debug(('WARNING CHANGE NOT BEING ' 'USED\nCHANGEVALUE = {}').format(my_change_value)) else: self.outputs.append({ 'address': self.my_change_addr, 'value': my_change_value }) self.utxo_tx = [ dict([('output', u)]) for u in sum(self.utxos.values(), []) ] self.outputs.append({ 'address': self.coinjoin_address(), 'value': self.cj_amount }) random.shuffle(self.utxo_tx) random.shuffle(self.outputs) tx = btc.mktx(self.utxo_tx, self.outputs) log.debug('obtained tx\n' + pprint.pformat(btc.deserialize(tx))) self.msgchan.send_tx(self.active_orders.keys(), tx) self.latest_tx = btc.deserialize(tx) for index, ins in enumerate(self.latest_tx['ins']): utxo = ins['outpoint']['hash'] + ':' + str( ins['outpoint']['index']) if utxo not in self.input_utxos.keys(): continue # placeholders required ins['script'] = 'deadbeef'
def recv_txio(self, nick, utxo_list, cj_pub, change_addr): if nick not in self.nonrespondants: log.debug(('recv_txio => nick={} not in ' 'nonrespondants {}').format(nick, self.nonrespondants)) return self.utxos[nick] = utxo_list utxo_data = jm_single().bc_interface.query_utxo_set(self.utxos[nick]) if None in utxo_data: log.debug(('ERROR outputs unconfirmed or already spent. ' 'utxo_data={}').format(pprint.pformat(utxo_data))) # when internal reviewing of makers is created, add it here to # immediately quit; currently, the timeout thread suffices. return total_input = sum([d['value'] for d in utxo_data]) real_cjfee = calc_cj_fee(self.active_orders[nick]['ordertype'], self.active_orders[nick]['cjfee'], self.cj_amount) change_amount = (total_input - self.cj_amount - self.active_orders[nick]['txfee'] + real_cjfee) # certain malicious and/or incompetent liquidity providers send # inputs totalling less than the coinjoin amount! this leads to # a change output of zero satoshis, so the invalid transaction # fails harmlessly; let's fail earlier, with a clear message. if change_amount < jm_single().DUST_THRESHOLD: fmt = ('ERROR counterparty requires sub-dust change. nick={}' 'totalin={:d} cjamount={:d} change={:d}').format log.debug(fmt(nick, total_input, self.cj_amount, change_amount)) return # timeout marks this maker as nonresponsive self.outputs.append({'address': change_addr, 'value': change_amount}) fmt = ('fee breakdown for {} totalin={:d} ' 'cjamount={:d} txfee={:d} realcjfee={:d}').format log.debug(fmt(nick, total_input, self.cj_amount, self.active_orders[nick]['txfee'], real_cjfee)) cj_addr = btc.pubtoaddr(cj_pub, get_p2pk_vbyte()) self.outputs.append({'address': cj_addr, 'value': self.cj_amount}) self.cjfee_total += real_cjfee self.maker_txfee_contributions += self.active_orders[nick]['txfee'] self.nonrespondants.remove(nick) if len(self.nonrespondants) > 0: log.debug('nonrespondants = ' + str(self.nonrespondants)) return log.debug('got all parts, enough to build a tx') self.nonrespondants = list(self.active_orders.keys()) my_total_in = sum([va['value'] for u, va in self.input_utxos.iteritems()]) if self.my_change_addr: #Estimate fee per choice of next/3/6 blocks targetting. estimated_fee = estimate_tx_fee(len(sum( self.utxos.values(),[])), len(self.outputs)+2) log.debug("Based on initial guess: "+str( self.total_txfee)+", we estimated a fee of: "+str(estimated_fee)) #reset total self.total_txfee = estimated_fee my_txfee = max(self.total_txfee - self.maker_txfee_contributions, 0) my_change_value = ( my_total_in - self.cj_amount - self.cjfee_total - my_txfee) #Since we could not predict the maker's inputs, we may end up needing #too much such that the change value is negative or small. Note that #we have tried to avoid this based on over-estimating the needed amount #in SendPayment.create_tx(), but it is still a possibility if one maker #uses a *lot* of inputs. if self.my_change_addr and my_change_value <= 0: raise ValueError("Calculated transaction fee of: "+str( self.total_txfee)+" is too large for our inputs;Please try again.") elif self.my_change_addr and my_change_value <= jm_single().DUST_THRESHOLD: log.debug("Dynamically calculated change lower than dust: "+str( my_change_value)+"; dropping.") self.my_change_addr = None my_change_value = 0 log.debug('fee breakdown for me totalin=%d my_txfee=%d makers_txfee=%d cjfee_total=%d => changevalue=%d' % (my_total_in, my_txfee, self.maker_txfee_contributions, self.cjfee_total, my_change_value)) if self.my_change_addr is None: if my_change_value != 0 and abs(my_change_value) != 1: # seems you wont always get exactly zero because of integer # rounding so 1 satoshi extra or fewer being spent as miner # fees is acceptable log.debug(('WARNING CHANGE NOT BEING ' 'USED\nCHANGEVALUE = {}').format(my_change_value)) else: self.outputs.append({'address': self.my_change_addr, 'value': my_change_value}) self.utxo_tx = [dict([('output', u)]) for u in sum(self.utxos.values(), [])] self.outputs.append({'address': self.coinjoin_address(), 'value': self.cj_amount}) random.shuffle(self.utxo_tx) random.shuffle(self.outputs) tx = btc.mktx(self.utxo_tx, self.outputs) log.debug('obtained tx\n' + pprint.pformat(btc.deserialize(tx))) #Re-calculate a sensible timeout wait based on the throttling #settings and the tx size. #Calculation: Let tx size be S; tx undergoes two b64 expansions, 1.8*S #So we're sending N*1.8*S over the wire, and the #maximum bytes/sec = B, means we need (1.8*N*S/B) seconds, #and need to add some leeway for network delays, we just add the #contents of jm_single().maker_timeout_sec (the user configured value) self.maker_timeout_sec = (len(tx) * 1.8 * len( self.active_orders.keys()))/(B_PER_SEC) + jm_single().maker_timeout_sec log.debug("Based on transaction size: " + str( len(tx)) + ", calculated time to wait for replies: " + str( self.maker_timeout_sec)) self.all_responded = True with self.timeout_lock: self.timeout_lock.notify() self.msgchan.send_tx(self.active_orders.keys(), tx) self.latest_tx = btc.deserialize(tx) for index, ins in enumerate(self.latest_tx['ins']): utxo = ins['outpoint']['hash'] + ':' + str( ins['outpoint']['index']) if utxo not in self.input_utxos.keys(): continue # placeholders required ins['script'] = 'deadbeef'
def recv_txio(self, nick, utxo_list, cj_pub, change_addr): if nick not in self.nonrespondants: log.debug(('recv_txio => nick={} not in ' 'nonrespondants {}').format(nick, self.nonrespondants)) return self.utxos[nick] = utxo_list utxo_data = jm_single().bc_interface.query_utxo_set(self.utxos[nick]) if None in utxo_data: log.debug(('ERROR outputs unconfirmed or already spent. ' 'utxo_data={}').format(pprint.pformat(utxo_data))) # when internal reviewing of makers is created, add it here to # immediately quit return # ignore this message, eventually the timeout thread will recover total_input = sum([d['value'] for d in utxo_data]) real_cjfee = calc_cj_fee(self.active_orders[nick]['ordertype'], self.active_orders[nick]['cjfee'], self.cj_amount) self.outputs.append({'address': change_addr, 'value': total_input - self.cj_amount - self.active_orders[nick]['txfee'] + real_cjfee}) fmt = ('fee breakdown for {} totalin={:d} ' 'cjamount={:d} txfee={:d} realcjfee={:d}').format log.debug(fmt(nick, total_input, self.cj_amount, self.active_orders[nick]['txfee'], real_cjfee)) cj_addr = btc.pubtoaddr(cj_pub, get_p2pk_vbyte()) self.outputs.append({'address': cj_addr, 'value': self.cj_amount}) self.cjfee_total += real_cjfee self.maker_txfee_contributions += self.active_orders[nick]['txfee'] self.nonrespondants.remove(nick) if len(self.nonrespondants) > 0: log.debug('nonrespondants = ' + str(self.nonrespondants)) return self.all_responded = True with self.timeout_lock: self.timeout_lock.notify() log.debug('got all parts, enough to build a tx') self.nonrespondants = list(self.active_orders.keys()) my_total_in = sum([va['value'] for u, va in self.input_utxos.iteritems()]) if self.my_change_addr: #Estimate fee per choice of next/3/6 blocks targetting. estimated_fee = estimate_tx_fee(len(sum( self.utxos.values(),[])), len(self.outputs)+2) log.debug("Based on initial guess: "+str( self.total_txfee)+", we estimated a fee of: "+str(estimated_fee)) #reset total self.total_txfee = estimated_fee my_txfee = max(self.total_txfee - self.maker_txfee_contributions, 0) my_change_value = ( my_total_in - self.cj_amount - self.cjfee_total - my_txfee) #Since we could not predict the maker's inputs, we may end up needing #too much such that the change value is negative or small. Note that #we have tried to avoid this based on over-estimating the needed amount #in SendPayment.create_tx(), but it is still a possibility if one maker #uses a *lot* of inputs. if self.my_change_addr and my_change_value <= 0: raise ValueError("Calculated transaction fee of: "+str( self.total_txfee)+" is too large for our inputs;Please try again.") elif self.my_change_addr and my_change_value <= jm_single().DUST_THRESHOLD: log.debug("Dynamically calculated change lower than dust: "+str( my_change_value)+"; dropping.") self.my_change_addr = None my_change_value = 0 log.debug('fee breakdown for me totalin=%d my_txfee=%d makers_txfee=%d cjfee_total=%d => changevalue=%d' % (my_total_in, my_txfee, self.maker_txfee_contributions, self.cjfee_total, my_change_value)) if self.my_change_addr is None: if my_change_value != 0 and abs(my_change_value) != 1: # seems you wont always get exactly zero because of integer # rounding so 1 satoshi extra or fewer being spent as miner # fees is acceptable log.debug(('WARNING CHANGE NOT BEING ' 'USED\nCHANGEVALUE = {}').format(my_change_value)) else: self.outputs.append({'address': self.my_change_addr, 'value': my_change_value}) self.utxo_tx = [dict([('output', u)]) for u in sum(self.utxos.values(), [])] self.outputs.append({'address': self.coinjoin_address(), 'value': self.cj_amount}) random.shuffle(self.utxo_tx) random.shuffle(self.outputs) tx = btc.mktx(self.utxo_tx, self.outputs) log.debug('obtained tx\n' + pprint.pformat(btc.deserialize(tx))) self.msgchan.send_tx(self.active_orders.keys(), tx) self.latest_tx = btc.deserialize(tx) for index, ins in enumerate(self.latest_tx['ins']): utxo = ins['outpoint']['hash'] + ':' + str( ins['outpoint']['index']) if utxo not in self.input_utxos.keys(): continue # placeholders required ins['script'] = 'deadbeef'
def recv_txio(self, nick, utxo_list, auth_pub, cj_addr, change_addr): if nick not in self.nonrespondants: log.debug(('recv_txio => nick={} not in ' 'nonrespondants {}').format(nick, self.nonrespondants)) return self.utxos[nick] = utxo_list utxo_data = jm_single().bc_interface.query_utxo_set(self.utxos[nick]) if None in utxo_data: log.debug(('ERROR outputs unconfirmed or already spent. ' 'utxo_data={}').format(pprint.pformat(utxo_data))) # when internal reviewing of makers is created, add it here to # immediately quit; currently, the timeout thread suffices. return #Complete maker authorization: #Extract the address fields from the utxos #Construct the Bitcoin address for the auth_pub field #Ensure that at least one address from utxos corresponds. input_addresses = [d['address'] for d in utxo_data] auth_address = btc.pubkey_to_address(auth_pub, get_p2pk_vbyte()) if not auth_address in input_addresses: log.debug("ERROR maker's authorising pubkey is not included " "in the transaction: " + str(auth_address)) return total_input = sum([d['value'] for d in utxo_data]) real_cjfee = calc_cj_fee(self.active_orders[nick]['ordertype'], self.active_orders[nick]['cjfee'], self.cj_amount) change_amount = (total_input - self.cj_amount - self.active_orders[nick]['txfee'] + real_cjfee) # certain malicious and/or incompetent liquidity providers send # inputs totalling less than the coinjoin amount! this leads to # a change output of zero satoshis, so the invalid transaction # fails harmlessly; let's fail earlier, with a clear message. if change_amount < jm_single().DUST_THRESHOLD: fmt = ('ERROR counterparty requires sub-dust change. nick={}' 'totalin={:d} cjamount={:d} change={:d}').format log.debug(fmt(nick, total_input, self.cj_amount, change_amount)) return # timeout marks this maker as nonresponsive self.outputs.append({'address': change_addr, 'value': change_amount}) fmt = ('fee breakdown for {} totalin={:d} ' 'cjamount={:d} txfee={:d} realcjfee={:d}').format log.debug( fmt(nick, total_input, self.cj_amount, self.active_orders[nick]['txfee'], real_cjfee)) self.outputs.append({'address': cj_addr, 'value': self.cj_amount}) self.cjfee_total += real_cjfee self.maker_txfee_contributions += self.active_orders[nick]['txfee'] self.nonrespondants.remove(nick) if len(self.nonrespondants) > 0: log.debug('nonrespondants = ' + str(self.nonrespondants)) return log.debug('got all parts, enough to build a tx') self.nonrespondants = list(self.active_orders.keys()) my_total_in = sum( [va['value'] for u, va in self.input_utxos.iteritems()]) if self.my_change_addr: #Estimate fee per choice of next/3/6 blocks targetting. estimated_fee = estimate_tx_fee(len(sum(self.utxos.values(), [])), len(self.outputs) + 2) log.debug("Based on initial guess: " + str(self.total_txfee) + ", we estimated a fee of: " + str(estimated_fee)) #reset total self.total_txfee = estimated_fee my_txfee = max(self.total_txfee - self.maker_txfee_contributions, 0) my_change_value = (my_total_in - self.cj_amount - self.cjfee_total - my_txfee) #Since we could not predict the maker's inputs, we may end up needing #too much such that the change value is negative or small. Note that #we have tried to avoid this based on over-estimating the needed amount #in SendPayment.create_tx(), but it is still a possibility if one maker #uses a *lot* of inputs. if self.my_change_addr and my_change_value <= 0: raise ValueError("Calculated transaction fee of: " + str(self.total_txfee) + " is too large for our inputs;Please try again.") elif self.my_change_addr and my_change_value <= jm_single( ).DUST_THRESHOLD: log.debug("Dynamically calculated change lower than dust: " + str(my_change_value) + "; dropping.") self.my_change_addr = None my_change_value = 0 log.debug( 'fee breakdown for me totalin=%d my_txfee=%d makers_txfee=%d cjfee_total=%d => changevalue=%d' % (my_total_in, my_txfee, self.maker_txfee_contributions, self.cjfee_total, my_change_value)) if self.my_change_addr is None: if my_change_value != 0 and abs(my_change_value) != 1: # seems you wont always get exactly zero because of integer # rounding so 1 satoshi extra or fewer being spent as miner # fees is acceptable log.debug(('WARNING CHANGE NOT BEING ' 'USED\nCHANGEVALUE = {}').format(my_change_value)) else: self.outputs.append({ 'address': self.my_change_addr, 'value': my_change_value }) self.utxo_tx = [ dict([('output', u)]) for u in sum(self.utxos.values(), []) ] self.outputs.append({ 'address': self.coinjoin_address(), 'value': self.cj_amount }) random.shuffle(self.utxo_tx) random.shuffle(self.outputs) tx = btc.mktx(self.utxo_tx, self.outputs) log.debug('obtained tx\n' + pprint.pformat(btc.deserialize(tx))) #Re-calculate a sensible timeout wait based on the throttling #settings and the tx size. #Calculation: Let tx size be S; tx undergoes two b64 expansions, 1.8*S #So we're sending N*1.8*S over the wire, and the #maximum bytes/sec = B, means we need (1.8*N*S/B) seconds, #and need to add some leeway for network delays, we just add the #contents of jm_single().maker_timeout_sec (the user configured value) self.maker_timeout_sec = (len(tx) * 1.8 * len(self.active_orders.keys( ))) / (B_PER_SEC) + jm_single().maker_timeout_sec log.debug("Based on transaction size: " + str(len(tx)) + ", calculated time to wait for replies: " + str(self.maker_timeout_sec)) self.all_responded = True with self.timeout_lock: self.timeout_lock.notify() self.msgchan.send_tx(self.active_orders.keys(), tx) self.latest_tx = btc.deserialize(tx) for index, ins in enumerate(self.latest_tx['ins']): utxo = ins['outpoint']['hash'] + ':' + str( ins['outpoint']['index']) if utxo not in self.input_utxos.keys(): continue # placeholders required ins['script'] = 'deadbeef'