示例#1
0
def main():
    parser = get_sendpayment_parser()
    (options, args) = parser.parse_args()
    load_program_config(config_path=options.datadir)

    if options.schedule == '':
        if ((len(args) < 2) or (btc.is_bip21_uri(args[1]) and len(args) != 2)
                or (not btc.is_bip21_uri(args[1]) and len(args) != 3)):
            parser.error(
                "Joinmarket sendpayment (coinjoin) needs arguments:"
                " wallet, amount, destination address or wallet, bitcoin_uri.")
            sys.exit(EXIT_ARGERROR)

    #without schedule file option, use the arguments to create a schedule
    #of a single transaction
    sweeping = False
    bip78url = None
    if options.schedule == '':
        if btc.is_bip21_uri(args[1]):
            parsed = btc.decode_bip21_uri(args[1])
            try:
                amount = parsed['amount']
            except KeyError:
                parser.error("Given BIP21 URI does not contain amount.")
                sys.exit(EXIT_ARGERROR)
            destaddr = parsed['address']
            if "pj" in parsed:
                # note that this is a URL; its validity
                # checking is deferred to twisted.web.client.Agent
                bip78url = parsed["pj"]
                # setting makercount only for fee sanity check.
                # note we ignore any user setting and enforce N=0,
                # as this is a flag in the code for a non-JM coinjoin;
                # for the fee sanity check, note that BIP78 currently
                # will only allow small fee changes, so N=0 won't
                # be very inaccurate.
                jmprint("Attempting to pay via payjoin.", "info")
                options.makercount = 0
        else:
            amount = btc.amount_to_sat(args[1])
            if amount == 0:
                sweeping = True
            destaddr = args[2]
        mixdepth = options.mixdepth
        addr_valid, errormsg = validate_address(destaddr)
        command_to_burn = (is_burn_destination(destaddr) and sweeping
                           and options.makercount == 0)
        if not addr_valid and not command_to_burn:
            jmprint('ERROR: Address invalid. ' + errormsg, "error")
            if is_burn_destination(destaddr):
                jmprint(
                    "The required options for burning coins are zero makers" +
                    " (-N 0), sweeping (amount = 0) and not using BIP78 Payjoin",
                    "info")
            sys.exit(EXIT_ARGERROR)
        if sweeping == False and amount < DUST_THRESHOLD:
            jmprint(
                'ERROR: Amount ' + btc.amount_to_str(amount) +
                ' is below dust threshold ' +
                btc.amount_to_str(DUST_THRESHOLD) + '.', "error")
            sys.exit(EXIT_ARGERROR)
        if (options.makercount != 0
                and options.makercount < jm_single().config.getint(
                    "POLICY", "minimum_makers")):
            jmprint(
                'ERROR: Maker count ' + str(options.makercount) +
                ' below minimum_makers (' +
                str(jm_single().config.getint("POLICY", "minimum_makers")) +
                ') in joinmarket.cfg.', "error")
            sys.exit(EXIT_ARGERROR)
        schedule = [[
            options.mixdepth, amount, options.makercount, destaddr, 0.0,
            NO_ROUNDING, 0
        ]]
    else:
        if len(args) > 1:
            parser.error("Schedule files are not compatible with "
                         "payment destination/amount arguments.")
            sys.exit(EXIT_ARGERROR)
        result, schedule = get_schedule(options.schedule)
        if not result:
            log.error(
                "Failed to load schedule file, quitting. Check the syntax.")
            log.error("Error was: " + str(schedule))
            sys.exit(EXIT_FAILURE)
        mixdepth = 0
        for s in schedule:
            if s[1] == 0:
                sweeping = True
            #only used for checking the maximum mixdepth required
            mixdepth = max([mixdepth, s[0]])

    wallet_name = args[0]

    check_regtest()

    if options.pickorders:
        chooseOrdersFunc = pick_order
        if sweeping:
            jmprint('WARNING: You may have to pick offers multiple times',
                    "warning")
            jmprint('WARNING: due to manual offer picking while sweeping',
                    "warning")
    else:
        chooseOrdersFunc = options.order_choose_fn

    # If tx_fees are set manually by CLI argument, override joinmarket.cfg:
    if int(options.txfee) > 0:
        jm_single().config.set("POLICY", "tx_fees", str(options.txfee))

    maxcjfee = (1, float('inf'))
    if not options.pickorders and options.makercount != 0:
        maxcjfee = get_max_cj_fee_values(jm_single().config, options)
        log.info("Using maximum coinjoin fee limits per maker of {:.4%}, {} "
                 "".format(maxcjfee[0], btc.amount_to_str(maxcjfee[1])))

    log.info('starting sendpayment')

    max_mix_depth = max([mixdepth, options.amtmixdepths - 1])

    wallet_path = get_wallet_path(wallet_name, None)
    wallet = open_test_wallet_maybe(
        wallet_path,
        wallet_name,
        max_mix_depth,
        wallet_password_stdin=options.wallet_password_stdin,
        gap_limit=options.gaplimit)
    wallet_service = WalletService(wallet)
    if wallet_service.rpc_error:
        sys.exit(EXIT_FAILURE)
    # in this script, we need the wallet synced before
    # logic processing for some paths, so do it now:
    while not wallet_service.synced:
        wallet_service.sync_wallet(fast=not options.recoversync)
    # the sync call here will now be a no-op:
    wallet_service.startService()

    # Dynamically estimate a realistic fee, for coinjoins.
    # At this point we do not know even the number of our own inputs, so
    # we guess conservatively with 2 inputs and 2 outputs each.
    if options.makercount != 0:
        fee_per_cp_guess = estimate_tx_fee(2,
                                           2,
                                           txtype=wallet_service.get_txtype())
        log.debug("Estimated miner/tx fee for each cj participant: " +
                  btc.amount_to_str(fee_per_cp_guess))

    # From the estimated tx fees, check if the expected amount is a
    # significant value compared the the cj amount; currently enabled
    # only for single join (the predominant, non-advanced case)
    if options.schedule == '' and options.makercount != 0:
        total_cj_amount = amount
        if total_cj_amount == 0:
            total_cj_amount = wallet_service.get_balance_by_mixdepth()[
                options.mixdepth]
            if total_cj_amount == 0:
                raise ValueError(
                    "No confirmed coins in the selected mixdepth. Quitting")
        exp_tx_fees_ratio = (
            (1 + options.makercount) * fee_per_cp_guess) / total_cj_amount
        if exp_tx_fees_ratio > 0.05:
            jmprint(
                'WARNING: Expected bitcoin network miner fees for this coinjoin'
                ' amount are roughly {:.1%}'.format(exp_tx_fees_ratio),
                "warning")
            if input('You might want to modify your tx_fee'
                     ' settings in joinmarket.cfg. Still continue? (y/n):'
                     )[0] != 'y':
                sys.exit('Aborted by user.')
        else:
            log.info(
                "Estimated miner/tx fees for this coinjoin amount: {:.1%}".
                format(exp_tx_fees_ratio))

    if options.makercount == 0 and not bip78url:
        tx = direct_send(wallet_service,
                         amount,
                         mixdepth,
                         destaddr,
                         options.answeryes,
                         with_final_psbt=options.with_psbt)
        if options.with_psbt:
            log.info(
                "This PSBT is fully signed and can be sent externally for "
                "broadcasting:")
            log.info(tx.to_base64())
        return

    if wallet.get_txtype() == 'p2pkh':
        jmprint(
            "Only direct sends (use -N 0) are supported for "
            "legacy (non-segwit) wallets.", "error")
        sys.exit(EXIT_ARGERROR)

    def filter_orders_callback(orders_fees, cjamount):
        orders, total_cj_fee = orders_fees
        log.info("Chose these orders: " + pprint.pformat(orders))
        log.info('total cj fee = ' + str(total_cj_fee))
        total_fee_pc = 1.0 * total_cj_fee / cjamount
        log.info('total coinjoin fee = ' +
                 str(float('%.3g' % (100.0 * total_fee_pc))) + '%')
        WARNING_THRESHOLD = 0.02  # 2%
        if total_fee_pc > WARNING_THRESHOLD:
            log.info('\n'.join(['=' * 60] * 3))
            log.info('WARNING   ' * 6)
            log.info('\n'.join(['=' * 60] * 1))
            log.info(
                'OFFERED COINJOIN FEE IS UNUSUALLY HIGH. DOUBLE/TRIPLE CHECK.')
            log.info('\n'.join(['=' * 60] * 1))
            log.info('WARNING   ' * 6)
            log.info('\n'.join(['=' * 60] * 3))
        if not options.answeryes:
            if input('send with these orders? (y/n):')[0] != 'y':
                return False
        return True

    def taker_finished(res, fromtx=False, waittime=0.0, txdetails=None):
        if fromtx == "unconfirmed":
            #If final entry, stop *here*, don't wait for confirmation
            if taker.schedule_index + 1 == len(taker.schedule):
                reactor.stop()
            return
        if fromtx:
            if res:
                txd, txid = txdetails
                reactor.callLater(waittime * 60,
                                  clientfactory.getClient().clientStart)
            else:
                #a transaction failed; we'll try to repeat without the
                #troublemakers.
                #If this error condition is reached from Phase 1 processing,
                #and there are less than minimum_makers honest responses, we
                #just give up (note that in tumbler we tweak and retry, but
                #for sendpayment the user is "online" and so can manually
                #try again).
                #However if the error is in Phase 2 and we have minimum_makers
                #or more responses, we do try to restart with the honest set, here.
                if taker.latest_tx is None:
                    #can only happen with < minimum_makers; see above.
                    log.info("A transaction failed but there are insufficient "
                             "honest respondants to continue; giving up.")
                    reactor.stop()
                    return
                #This is Phase 2; do we have enough to try again?
                taker.add_honest_makers(
                    list(
                        set(taker.maker_utxo_data.keys()).symmetric_difference(
                            set(taker.nonrespondants))))
                if len(taker.honest_makers) < jm_single().config.getint(
                        "POLICY", "minimum_makers"):
                    log.info("Too few makers responded honestly; "
                             "giving up this attempt.")
                    reactor.stop()
                    return
                jmprint("We failed to complete the transaction. The following "
                      "makers responded honestly: " + str(taker.honest_makers) +\
                      ", so we will retry with them.", "warning")
                #Now we have to set the specific group we want to use, and hopefully
                #they will respond again as they showed honesty last time.
                #we must reset the number of counterparties, as well as fix who they
                #are; this is because the number is used to e.g. calculate fees.
                #cleanest way is to reset the number in the schedule before restart.
                taker.schedule[taker.schedule_index][2] = len(
                    taker.honest_makers)
                log.info("Retrying with: " +
                         str(taker.schedule[taker.schedule_index][2]) +
                         " counterparties.")
                #rewind to try again (index is incremented in Taker.initialize())
                taker.schedule_index -= 1
                taker.set_honest_only(True)
                reactor.callLater(5.0, clientfactory.getClient().clientStart)
        else:
            if not res:
                log.info("Did not complete successfully, shutting down")
            #Should usually be unreachable, unless conf received out of order;
            #because we should stop on 'unconfirmed' for last (see above)
            else:
                log.info("All transactions completed correctly")
            reactor.stop()

    if bip78url:
        # TODO sanity check wallet type is segwit
        manager = parse_payjoin_setup(args[1], wallet_service,
                                      options.mixdepth)
        reactor.callWhenRunning(send_payjoin, manager)
        reactor.run()
        return

    else:
        taker = Taker(wallet_service,
                      schedule,
                      order_chooser=chooseOrdersFunc,
                      max_cj_fee=maxcjfee,
                      callbacks=(filter_orders_callback, None, taker_finished))
    clientfactory = JMClientProtocolFactory(taker)
    nodaemon = jm_single().config.getint("DAEMON", "no_daemon")
    daemon = True if nodaemon == 1 else False
    if jm_single().config.get("BLOCKCHAIN", "network") == "regtest":
        startLogging(sys.stdout)
    start_reactor(jm_single().config.get("DAEMON", "daemon_host"),
                  jm_single().config.getint("DAEMON", "daemon_port"),
                  clientfactory,
                  daemon=daemon)
def main():
    parser = get_sendpayment_parser()
    (options, args) = parser.parse_args()
    load_program_config(config_path=options.datadir)
    if options.p2ep and len(args) != 3:
        parser.error("PayJoin requires exactly three arguments: "
                     "wallet, amount and destination address.")
        sys.exit(EXIT_ARGERROR)
    elif options.schedule == '' and len(args) != 3:
        parser.error("Joinmarket sendpayment (coinjoin) needs arguments:"
                     " wallet, amount and destination address")
        sys.exit(EXIT_ARGERROR)

    #without schedule file option, use the arguments to create a schedule
    #of a single transaction
    sweeping = False
    if options.schedule == '':
        amount = btc.amount_to_sat(args[1])
        if amount == 0:
            sweeping = True
        destaddr = args[2]
        mixdepth = options.mixdepth
        addr_valid, errormsg = validate_address(destaddr)
        if not addr_valid:
            jmprint('ERROR: Address invalid. ' + errormsg, "error")
            sys.exit(EXIT_ARGERROR)
        if sweeping == False and amount < DUST_THRESHOLD:
            jmprint(
                'ERROR: Amount ' + btc.amount_to_str(amount) +
                ' is below dust threshold ' +
                btc.amount_to_str(DUST_THRESHOLD) + '.', "error")
            sys.exit(EXIT_ARGERROR)
        if (options.makercount != 0
                and options.makercount < jm_single().config.getint(
                    "POLICY", "minimum_makers")):
            jmprint(
                'ERROR: Maker count ' + str(options.makercount) +
                ' below minimum_makers (' +
                str(jm_single().config.getint("POLICY", "minimum_makers")) +
                ') in joinmarket.cfg.', "error")
            sys.exit(EXIT_ARGERROR)
        schedule = [[
            options.mixdepth, amount, options.makercount, destaddr, 0.0,
            NO_ROUNDING, 0
        ]]
    else:
        if options.p2ep:
            parser.error("Schedule files are not compatible with PayJoin")
            sys.exit(EXIT_FAILURE)
        result, schedule = get_schedule(options.schedule)
        if not result:
            log.error(
                "Failed to load schedule file, quitting. Check the syntax.")
            log.error("Error was: " + str(schedule))
            sys.exit(EXIT_FAILURE)
        mixdepth = 0
        for s in schedule:
            if s[1] == 0:
                sweeping = True
            #only used for checking the maximum mixdepth required
            mixdepth = max([mixdepth, s[0]])

    wallet_name = args[0]

    check_regtest()

    if options.pickorders:
        chooseOrdersFunc = pick_order
        if sweeping:
            jmprint('WARNING: You may have to pick offers multiple times',
                    "warning")
            jmprint('WARNING: due to manual offer picking while sweeping',
                    "warning")
    else:
        chooseOrdersFunc = options.order_choose_fn

    # If tx_fees are set manually by CLI argument, override joinmarket.cfg:
    if int(options.txfee) > 0:
        jm_single().config.set("POLICY", "tx_fees", str(options.txfee))

    # Dynamically estimate a realistic fee if it currently is the default value.
    # At this point we do not know even the number of our own inputs, so
    # we guess conservatively with 2 inputs and 2 outputs each.
    if options.txfee == -1:
        options.txfee = max(options.txfee,
                            estimate_tx_fee(2, 2, txtype="p2sh-p2wpkh"))
        log.debug("Estimated miner/tx fee for each cj participant: " +
                  str(options.txfee))
    assert (options.txfee >= 0)

    maxcjfee = (1, float('inf'))
    if not options.p2ep and not options.pickorders and options.makercount != 0:
        maxcjfee = get_max_cj_fee_values(jm_single().config, options)
        log.info("Using maximum coinjoin fee limits per maker of {:.4%}, {} "
                 "".format(maxcjfee[0], btc.amount_to_str(maxcjfee[1])))

    log.debug('starting sendpayment')

    max_mix_depth = max([mixdepth, options.amtmixdepths - 1])

    wallet_path = get_wallet_path(wallet_name, None)
    wallet = open_test_wallet_maybe(
        wallet_path,
        wallet_name,
        max_mix_depth,
        wallet_password_stdin=options.wallet_password_stdin,
        gap_limit=options.gaplimit)
    wallet_service = WalletService(wallet)
    # in this script, we need the wallet synced before
    # logic processing for some paths, so do it now:
    while not wallet_service.synced:
        wallet_service.sync_wallet(fast=not options.recoversync)
    # the sync call here will now be a no-op:
    wallet_service.startService()

    # From the estimated tx fees, check if the expected amount is a
    # significant value compared the the cj amount; currently enabled
    # only for single join (the predominant, non-advanced case)
    if options.schedule == '':
        total_cj_amount = amount
        if total_cj_amount == 0:
            total_cj_amount = wallet_service.get_balance_by_mixdepth()[
                options.mixdepth]
            if total_cj_amount == 0:
                raise ValueError(
                    "No confirmed coins in the selected mixdepth. Quitting")
        exp_tx_fees_ratio = (
            (1 + options.makercount) * options.txfee) / total_cj_amount
        if exp_tx_fees_ratio > 0.05:
            jmprint(
                'WARNING: Expected bitcoin network miner fees for this coinjoin'
                ' amount are roughly {:.1%}'.format(exp_tx_fees_ratio),
                "warning")
            if input('You might want to modify your tx_fee'
                     ' settings in joinmarket.cfg. Still continue? (y/n):'
                     )[0] != 'y':
                sys.exit('Aborted by user.')
        else:
            log.info(
                "Estimated miner/tx fees for this coinjoin amount: {:.1%}".
                format(exp_tx_fees_ratio))

    if options.makercount == 0 and not options.p2ep:
        direct_send(wallet_service, amount, mixdepth, destaddr,
                    options.answeryes)
        return

    if wallet.get_txtype() == 'p2pkh':
        jmprint(
            "Only direct sends (use -N 0) are supported for "
            "legacy (non-segwit) wallets.", "error")
        sys.exit(EXIT_ARGERROR)

    def filter_orders_callback(orders_fees, cjamount):
        orders, total_cj_fee = orders_fees
        log.info("Chose these orders: " + pprint.pformat(orders))
        log.info('total cj fee = ' + str(total_cj_fee))
        total_fee_pc = 1.0 * total_cj_fee / cjamount
        log.info('total coinjoin fee = ' +
                 str(float('%.3g' % (100.0 * total_fee_pc))) + '%')
        WARNING_THRESHOLD = 0.02  # 2%
        if total_fee_pc > WARNING_THRESHOLD:
            log.info('\n'.join(['=' * 60] * 3))
            log.info('WARNING   ' * 6)
            log.info('\n'.join(['=' * 60] * 1))
            log.info(
                'OFFERED COINJOIN FEE IS UNUSUALLY HIGH. DOUBLE/TRIPLE CHECK.')
            log.info('\n'.join(['=' * 60] * 1))
            log.info('WARNING   ' * 6)
            log.info('\n'.join(['=' * 60] * 3))
        if not options.answeryes:
            if input('send with these orders? (y/n):')[0] != 'y':
                return False
        return True

    def taker_finished(res, fromtx=False, waittime=0.0, txdetails=None):
        if fromtx == "unconfirmed":
            #If final entry, stop *here*, don't wait for confirmation
            if taker.schedule_index + 1 == len(taker.schedule):
                reactor.stop()
            return
        if fromtx:
            if res:
                txd, txid = txdetails
                reactor.callLater(waittime * 60,
                                  clientfactory.getClient().clientStart)
            else:
                #a transaction failed; we'll try to repeat without the
                #troublemakers.
                #If this error condition is reached from Phase 1 processing,
                #and there are less than minimum_makers honest responses, we
                #just give up (note that in tumbler we tweak and retry, but
                #for sendpayment the user is "online" and so can manually
                #try again).
                #However if the error is in Phase 2 and we have minimum_makers
                #or more responses, we do try to restart with the honest set, here.
                if taker.latest_tx is None:
                    #can only happen with < minimum_makers; see above.
                    log.info("A transaction failed but there are insufficient "
                             "honest respondants to continue; giving up.")
                    reactor.stop()
                    return
                #This is Phase 2; do we have enough to try again?
                taker.add_honest_makers(
                    list(
                        set(taker.maker_utxo_data.keys()).symmetric_difference(
                            set(taker.nonrespondants))))
                if len(taker.honest_makers) < jm_single().config.getint(
                        "POLICY", "minimum_makers"):
                    log.info("Too few makers responded honestly; "
                             "giving up this attempt.")
                    reactor.stop()
                    return
                jmprint("We failed to complete the transaction. The following "
                      "makers responded honestly: " + str(taker.honest_makers) +\
                      ", so we will retry with them.", "warning")
                #Now we have to set the specific group we want to use, and hopefully
                #they will respond again as they showed honesty last time.
                #we must reset the number of counterparties, as well as fix who they
                #are; this is because the number is used to e.g. calculate fees.
                #cleanest way is to reset the number in the schedule before restart.
                taker.schedule[taker.schedule_index][2] = len(
                    taker.honest_makers)
                log.info("Retrying with: " +
                         str(taker.schedule[taker.schedule_index][2]) +
                         " counterparties.")
                #rewind to try again (index is incremented in Taker.initialize())
                taker.schedule_index -= 1
                taker.set_honest_only(True)
                reactor.callLater(5.0, clientfactory.getClient().clientStart)
        else:
            if not res:
                log.info("Did not complete successfully, shutting down")
            #Should usually be unreachable, unless conf received out of order;
            #because we should stop on 'unconfirmed' for last (see above)
            else:
                log.info("All transactions completed correctly")
            reactor.stop()

    if options.p2ep:
        # This workflow requires command line reading; we force info level logging
        # to remove noise, and mostly communicate to the user with the fn
        # log.info (directly or via default taker_info_callback).
        set_logging_level("INFO")

        # in the case where the payment just hangs for a long period, allow
        # it to fail gracefully with an information message; this is triggered
        # only by the stallMonitor, which gives up after 20*maker_timeout_sec:
        def p2ep_on_finished_callback(res,
                                      fromtx=False,
                                      waittime=0.0,
                                      txdetails=None):
            log.error("PayJoin payment was NOT made, timed out.")
            reactor.stop()

        taker = P2EPTaker(options.p2ep,
                          wallet_service,
                          schedule,
                          callbacks=(None, None, p2ep_on_finished_callback))
    else:
        taker = Taker(wallet_service,
                      schedule,
                      order_chooser=chooseOrdersFunc,
                      max_cj_fee=maxcjfee,
                      callbacks=(filter_orders_callback, None, taker_finished))
    clientfactory = JMClientProtocolFactory(taker)
    nodaemon = jm_single().config.getint("DAEMON", "no_daemon")
    daemon = True if nodaemon == 1 else False
    p2ep = True if options.p2ep != "" else False
    if jm_single().config.get("BLOCKCHAIN",
                              "network") in ["regtest", "testnet"]:
        startLogging(sys.stdout)
    start_reactor(jm_single().config.get("DAEMON", "daemon_host"),
                  jm_single().config.getint("DAEMON", "daemon_port"),
                  clientfactory,
                  daemon=daemon,
                  p2ep=p2ep)
示例#3
0
def main():
    tumble_log = get_tumble_log(logsdir)
    (options, args) = get_tumbler_parser().parse_args()
    options_org = options
    options = vars(options)
    if len(args) < 1:
        jmprint('Error: Needs a wallet file', "error")
        sys.exit(EXIT_ARGERROR)
    load_program_config(config_path=options['datadir'])

    if jm_single().bc_interface is None:
        jmprint('Error: Needs a blockchain source', "error")
        sys.exit(EXIT_FAILURE)

    check_regtest()

    #Load the wallet
    wallet_name = args[0]
    max_mix_depth = options['mixdepthsrc'] + options['mixdepthcount']
    if options['amtmixdepths'] > max_mix_depth:
        max_mix_depth = options['amtmixdepths']
    wallet_path = get_wallet_path(wallet_name, None)
    wallet = open_test_wallet_maybe(
        wallet_path,
        wallet_name,
        max_mix_depth,
        wallet_password_stdin=options_org.wallet_password_stdin)
    wallet_service = WalletService(wallet)
    if wallet_service.rpc_error:
        sys.exit(EXIT_FAILURE)
    # in this script, we need the wallet synced before
    # logic processing for some paths, so do it now:
    while not wallet_service.synced:
        wallet_service.sync_wallet(fast=not options['recoversync'])
    # the sync call here will now be a no-op:
    wallet_service.startService()

    maxcjfee = get_max_cj_fee_values(jm_single().config, options_org)
    log.info(
        "Using maximum coinjoin fee limits per maker of {:.4%}, {} sat".format(
            *maxcjfee))

    #Parse options and generate schedule
    #Output information to log files
    jm_single().mincjamount = options['mincjamount']
    destaddrs = args[1:]
    for daddr in destaddrs:
        success, errmsg = validate_address(daddr)
        if not success:
            jmprint("Invalid destination address: " + daddr, "error")
            sys.exit(EXIT_ARGERROR)
    jmprint("Destination addresses: " + str(destaddrs), "important")
    #If the --restart flag is set we read the schedule
    #from the file, and filter out entries that are
    #already complete
    if options['restart']:
        res, schedule = get_schedule(
            os.path.join(logsdir, options['schedulefile']))
        if not res:
            jmprint(
                "Failed to load schedule, name: " +
                str(options['schedulefile']), "error")
            jmprint("Error was: " + str(schedule), "error")
            sys.exit(EXIT_FAILURE)
        #This removes all entries that are marked as done
        schedule = [s for s in schedule if s[-1] != 1]
        # remaining destination addresses must be stored in Taker.tdestaddrs
        # in case of tweaks; note we can't change, so any passed on command
        # line must be ignored:
        if len(destaddrs) > 0:
            jmprint(
                "For restarts, destinations are taken from schedule file,"
                " so passed destinations on the command line were ignored.",
                "important")
            if input("OK? (y/n)") != "y":
                sys.exit(EXIT_SUCCESS)
        destaddrs = [
            s[3] for s in schedule if s[3] not in ["INTERNAL", "addrask"]
        ]
        jmprint(
            "Remaining destination addresses in restart: " +
            ",".join(destaddrs), "important")
        if isinstance(schedule[0][-1], str) and len(schedule[0][-1]) == 64:
            #ensure last transaction is confirmed before restart
            tumble_log.info("WAITING TO RESTART...")
            txid = schedule[0][-1]
            restart_waiter(txid)
            #remove the already-done entry (this connects to the other TODO,
            #probably better *not* to truncate the done-already txs from file,
            #but simplest for now.
            schedule = schedule[1:]
        elif schedule[0][-1] != 0:
            print("Error: first schedule entry is invalid.")
            sys.exit(EXIT_FAILURE)
        with open(os.path.join(logsdir, options['schedulefile']), "wb") as f:
            f.write(schedule_to_text(schedule))
        tumble_log.info("TUMBLE RESTARTING")
    else:
        #Create a new schedule from scratch
        schedule = get_tumble_schedule(options, destaddrs,
                                       wallet.get_balance_by_mixdepth())
        tumble_log.info("TUMBLE STARTING")
        with open(os.path.join(logsdir, options['schedulefile']), "wb") as f:
            f.write(schedule_to_text(schedule))
        print("Schedule written to logs/" + options['schedulefile'])
    tumble_log.info("With this schedule: ")
    tumble_log.info(pprint.pformat(schedule))

    # If tx_fees are set manually by CLI argument, override joinmarket.cfg:
    if int(options['txfee']) > 0:
        jm_single().config.set("POLICY", "tx_fees", str(options['txfee']))

    # Dynamically estimate an expected tx fee for the whole tumbling run.
    # This is very rough: we guess with 2 inputs and 2 outputs each.
    fee_per_cp_guess = estimate_tx_fee(2,
                                       2,
                                       txtype=wallet_service.get_txtype())
    log.debug("Estimated miner/tx fee for each cj participant: " +
              str(fee_per_cp_guess))

    # From the estimated tx fees, check if the expected amount is a
    # significant value compared the the cj amount
    involved_parties = len(schedule)  # own participation in each CJ
    for item in schedule:
        involved_parties += item[2]  #  number of total tumble counterparties
    total_tumble_amount = int(0)
    max_mix_to_tumble = min(options['mixdepthsrc']+options['mixdepthcount'], \
                            max_mix_depth)
    for i in range(options['mixdepthsrc'], max_mix_to_tumble):
        total_tumble_amount += wallet_service.get_balance_by_mixdepth()[i]
        if total_tumble_amount == 0:
            raise ValueError(
                "No confirmed coins in the selected mixdepth(s). Quitting")
    exp_tx_fees_ratio = (involved_parties * fee_per_cp_guess) \
        / total_tumble_amount
    if exp_tx_fees_ratio > 0.05:
        jmprint(
            'WARNING: Expected bitcoin network miner fees for the whole '
            'tumbling run are roughly {:.1%}'.format(exp_tx_fees_ratio),
            "warning")
        if not options['restart'] and input(
                'You might want to modify your tx_fee'
                ' settings in joinmarket.cfg. Still continue? (y/n):'
        )[0] != 'y':
            sys.exit('Aborted by user.')
    else:
        log.info("Estimated miner/tx fees for this coinjoin amount for the "
                 "whole tumbling run: {:.1%}".format(exp_tx_fees_ratio))

    print("Progress logging to logs/TUMBLE.log")

    def filter_orders_callback(orders_fees, cjamount):
        """Decide whether to accept fees
        """
        return tumbler_filter_orders_callback(orders_fees, cjamount, taker)

    def taker_finished(res, fromtx=False, waittime=0.0, txdetails=None):
        """on_finished_callback for tumbler; processing is almost entirely
        deferred to generic taker_finished in tumbler_support module, except
        here reactor signalling.
        """
        sfile = os.path.join(logsdir, options['schedulefile'])
        tumbler_taker_finished_update(taker, sfile, tumble_log, options, res,
                                      fromtx, waittime, txdetails)
        if not fromtx:
            reactor.stop()
        elif fromtx != "unconfirmed":
            reactor.callLater(waittime * 60,
                              clientfactory.getClient().clientStart)

    #instantiate Taker with given schedule and run
    taker = Taker(wallet_service,
                  schedule,
                  maxcjfee,
                  order_chooser=options['order_choose_fn'],
                  callbacks=(filter_orders_callback, None, taker_finished),
                  tdestaddrs=destaddrs)
    clientfactory = JMClientProtocolFactory(taker)
    nodaemon = jm_single().config.getint("DAEMON", "no_daemon")
    daemon = True if nodaemon == 1 else False
    if jm_single().config.get("BLOCKCHAIN",
                              "network") in ["regtest", "testnet"]:
        startLogging(sys.stdout)
    start_reactor(jm_single().config.get("DAEMON", "daemon_host"),
                  jm_single().config.getint("DAEMON", "daemon_port"),
                  clientfactory,
                  daemon=daemon)
        def docoinjoin(self, request, walletname):
            self.check_cookie(request)
            if not self.services["wallet"]:
                raise NoWalletFound()
            if not self.wallet_name == walletname:
                raise InvalidRequestFormat()
            request_data = self.get_POST_body(
                request,
                ["mixdepth", "amount_sats", "counterparties", "destination"])
            if not request_data:
                raise InvalidRequestFormat()
            #see file scripts/sample-schedule-for-testnet for schedule format
            waittime = 0
            rounding = 16
            completion_flag = 0
            # A schedule is a list of lists, here we have only one item
            try:
                schedule = [[
                    int(request_data["mixdepth"]),
                    int(request_data["amount_sats"]),
                    int(request_data["counterparties"]),
                    request_data["destination"], waittime, rounding,
                    completion_flag
                ]]
            except ValueError:
                raise InvalidRequestFormat()
            # Instantiate a Taker.
            # `order_chooser` is whatever is default for Taker.
            # max_cj_fee is to be set based on config values.
            # If user has not set config, we only for now raise
            # an error specific to this case; in future we can
            # pass a request to a client to set the values, as
            # we do in CLI (the usual reasoning applies as to
            # why no defaults).
            def dummy_user_callback(rel, abs):
                raise ConfigNotPresent()

            max_cj_fee = get_max_cj_fee_values(
                jm_single().config, None, user_callback=dummy_user_callback)
            # Before actual start, update our coinjoin state:
            if not self.activate_coinjoin_state(CJ_TAKER_RUNNING):
                raise ServiceAlreadyStarted()
            self.taker = Taker(self.services["wallet"],
                               schedule,
                               max_cj_fee=max_cj_fee,
                               callbacks=(self.filter_orders_callback, None,
                                          self.taker_finished))
            # TODO ; this makes use of a pre-existing hack to allow
            # selectively disabling the stallMonitor function that checks
            # if transactions went through or not; here we want to cleanly
            # destroy the Taker after an attempt is made, successful or not.
            self.taker.testflag = True
            self.clientfactory = self.get_client_factory()

            dhost, dport = self.check_daemon_ready()

            _, self.coinjoin_connection = start_reactor(dhost,
                                                        dport,
                                                        self.clientfactory,
                                                        rs=False)
            return make_jmwalletd_response(request, status=202)