Improve auto-accept

basicswap/basicswap.py

@@ -35,6 +35,7 @@ from .rpc_xmr import make_xmr_rpc2_func
 from .ui.util import getCoinName, known_chart_coins
 from .util import (
     AutomationConstraint,
+    AutomationConstraintTemporary,
     LockedCoinError,
     TemporaryError,
     InactiveCoin,
@@ -125,25 +126,26 @@ from .basicswap_util import (
     AutomationOverrideOptions,
     BidStates,
     DebugTypes,
-    describeEventEntry,
     EventLogTypes,
-    getLastBidState,
-    getOfferProofOfFundsHash,
-    getVoutByAddress,
-    getVoutByScriptPubKey,
-    inactive_states,
-    isActiveBidState,
     KeyTypes,
     MessageTypes,
     NotificationTypes as NT,
     OfferStates,
-    strBidState,
     SwapTypes,
     TxLockTypes,
     TxStates,
     TxTypes,
     VisibilityOverrideOptions,
     XmrSplitMsgTypes,
+    canAcceptBidState,
+    describeEventEntry,
+    getLastBidState,
+    getOfferProofOfFundsHash,
+    getVoutByAddress,
+    getVoutByScriptPubKey,
+    inactive_states,
+    isActiveBidState,
+    strBidState,
 )
 from basicswap.db_util import (
     remove_expired_data,
@@ -307,8 +309,12 @@ class BasicSwap(BaseApp):
         self.check_watched_seconds = self.get_int_setting(
             "check_watched_seconds", 60, 1, 10 * 60
         )
-        self.check_xmr_swaps_seconds = self.get_int_setting(
+        self.check_split_messages_seconds = self.get_int_setting(
-            "check_xmr_swaps_seconds", 20, 1, 10 * 60
+            "check_split_messages_seconds", 20, 1, 10 * 60
+        )
+        # Retry auto accept for bids at BID_AACCEPT_DELAY, also updates when bids complete
+        self.check_delayed_auto_accept_seconds = self.get_int_setting(
+            "check_delayed_auto_accept_seconds", 60, 1, 20 * 60
         )
         self.startup_tries = self.get_int_setting(
             "startup_tries", 21, 1, 100
@@ -321,7 +327,8 @@ class BasicSwap(BaseApp):
         self._last_checked_progress = 0
         self._last_checked_smsg = 0
         self._last_checked_watched = 0
-        self._last_checked_xmr_swaps = 0
+        self._last_checked_split_messages = 0
+        self._last_checked_delayed_auto_accept = 0
         self._possibly_revoked_offers = collections.deque(
             [], maxlen=48
         )  # TODO: improve
@@ -409,7 +416,6 @@ class BasicSwap(BaseApp):
             bytes.fromhex(self.network_pubkey),
         )
 
-        self.db_echo: bool = self.settings.get("db_echo", False)
         self.sqlite_file: str = os.path.join(
             self.data_dir,
             "db{}.sqlite".format("" if self.chain == "mainnet" else ("_" + self.chain)),
@@ -3229,7 +3235,7 @@ class BasicSwap(BaseApp):
             now: int = self.getTime()
             ensure(bid.expire_at > now, "Bid expired")
             ensure(
-                bid.state in (BidStates.BID_RECEIVED,),
+                canAcceptBidState(bid.state),
                 "Wrong bid state: {}".format(BidStates(bid.state).name),
             )
 
@@ -3688,7 +3694,7 @@ class BasicSwap(BaseApp):
                 last_bid_state = getLastBidState(bid.states)
 
             ensure(
-                last_bid_state == BidStates.BID_RECEIVED,
+                canAcceptBidState(last_bid_state),
                 "Wrong bid state: {}".format(str(BidStates(last_bid_state))),
             )
 
@@ -3990,7 +3996,7 @@ class BasicSwap(BaseApp):
                 last_bid_state = getLastBidState(bid.states)
 
             ensure(
-                last_bid_state == BidStates.BID_RECEIVED,
+                canAcceptBidState(last_bid_state),
                 "Wrong bid state: {}".format(str(BidStates(last_bid_state))),
             )
 
@@ -6790,12 +6796,12 @@ class BasicSwap(BaseApp):
                             if (
                                 bid
                                 and bid.state == BidStates.SWAP_DELAYING
-                                and last_state == BidStates.BID_RECEIVED
+                                and canAcceptBidState(last_state)
                             ):
                                 new_state = (
                                     BidStates.BID_ERROR
                                     if offer.bid_reversed
-                                    else BidStates.BID_RECEIVED
+                                    else last_state
                                 )
                                 bid.setState(new_state)
                                 self.saveBidInSession(bid_id, bid, cursor)
@@ -6819,7 +6825,8 @@ class BasicSwap(BaseApp):
         if reload_in_progress:
             self.loadFromDB()
 
-    def checkXmrSwaps(self) -> None:
+    def checkSplitMessages(self) -> None:
+        # Combines split data messages
         now: int = self.getTime()
         ttl_xmr_split_messages = 60 * 60
         bid_cursor = None
@@ -6930,6 +6937,27 @@ class BasicSwap(BaseApp):
             self.closeDBCursor(bid_cursor)
             self.closeDB(cursor)
 
+    def checkDelayedAutoAccept(self) -> None:
+        bids_cursor = None
+        try:
+            cursor = self.openDB()
+            bids_cursor = self.getNewDBCursor()
+            for bid in self.query(
+                Bid, bids_cursor, {"state": int(BidStates.BID_AACCEPT_DELAY)}
+            ):
+                offer = self.getOffer(bid.offer_id, cursor=cursor)
+                if self.shouldAutoAcceptBid(offer, bid, cursor=cursor):
+                    delay = self.get_delay_event_seconds()
+                    self.log.info(
+                        "Auto accepting bid %s in %d seconds", bid.bid_id.hex(), delay
+                    )
+                    self.createActionInSession(
+                        delay, ActionTypes.ACCEPT_BID, bid.bid_id, cursor
+                    )
+        finally:
+            self.closeDBCursor(bids_cursor)
+            self.closeDB(cursor)
+
     def processOffer(self, msg) -> None:
         offer_bytes = bytes.fromhex(msg["hex"][2:-2])
 
@@ -7222,6 +7250,10 @@ class BasicSwap(BaseApp):
         try:
             use_cursor = self.openDB(cursor)
 
+            if self.countQueuedActions(use_cursor, bid.bid_id, ActionTypes.ACCEPT_BID):
+                # Bid is already queued to be accepted
+                return False
+
             link = self.queryOne(
                 AutomationLink,
                 use_cursor,
@@ -7250,6 +7282,12 @@ class BasicSwap(BaseApp):
 
             self.log.debug("Evaluating against strategy {}".format(strategy.record_id))
 
+            now: int = self.getTime()
+            if bid.expire_at < now:
+                raise AutomationConstraint(
+                    "Bid expired"
+                )  # State will be set to expired in expireBidsAndOffers
+
             if not offer.amount_negotiable:
                 if bid_amount != offer.amount_from:
                     raise AutomationConstraint("Need exact amount match")
@@ -7287,7 +7325,7 @@ class BasicSwap(BaseApp):
                 f"active_bids {num_not_completed}, max_concurrent_bids {max_concurrent_bids}"
             )
             if num_not_completed >= max_concurrent_bids:
-                raise AutomationConstraint(
+                raise AutomationConstraintTemporary(
                     "Already have {} bids to complete".format(num_not_completed)
                 )
 
@@ -7296,6 +7334,15 @@ class BasicSwap(BaseApp):
             )
             self.evaluateKnownIdentityForAutoAccept(strategy, identity_stats)
 
+            # Ensure the coin from wallet has sufficient balance for multiple bids
+            bids_active_if_accepted: int = num_not_completed + 1
+
+            ci_from = self.ci(offer.coin_from)
+            try:
+                ci_from.ensureFunds(bids_active_if_accepted * bid_amount)
+            except Exception as e:  # noqa: F841
+                raise AutomationConstraintTemporary("Balance too low")
+
             self.logEvent(
                 Concepts.BID,
                 bid.bid_id,
@@ -7305,7 +7352,7 @@ class BasicSwap(BaseApp):
             )
 
             return True
-        except AutomationConstraint as e:
+        except (AutomationConstraint, AutomationConstraintTemporary) as e:
             self.log.info(
                 "Not auto accepting bid {}, {}".format(bid.bid_id.hex(), str(e))
             )
@@ -7317,6 +7364,19 @@ class BasicSwap(BaseApp):
                     str(e),
                     use_cursor,
                 )
+
+            if isinstance(e, AutomationConstraintTemporary):
+                bid.setState(BidStates.BID_AACCEPT_DELAY)
+            else:
+                bid.setState(BidStates.BID_AACCEPT_FAIL)
+            self.updateDB(
+                bid,
+                use_cursor,
+                [
+                    "bid_id",
+                ],
+            )
+
             return False
         except Exception as e:
             self.logException(f"shouldAutoAcceptBid {e}")
@@ -9589,18 +9649,20 @@ class BasicSwap(BaseApp):
             cursor = self.openDB()
 
             if check_records:
-                query = """SELECT 1, bid_id, expire_at FROM bids WHERE active_ind = 1 AND state IN (:bid_received, :bid_sent) AND expire_at <= :check_time
+                query = """SELECT 1, bid_id, expire_at FROM bids WHERE active_ind = 1 AND state IN (:bid_received, :bid_sent, :bid_aad, :bid_aaf) AND expire_at <= :check_time
                            UNION ALL
                            SELECT 2, offer_id, expire_at FROM offers WHERE active_ind = 1 AND state IN (:offer_received, :offer_sent) AND expire_at <= :check_time
                 """
                 q = cursor.execute(
                     query,
                     {
-                        "bid_received": int(BidStates.BID_RECEIVED),
                         "offer_received": int(OfferStates.OFFER_RECEIVED),
-                        "bid_sent": int(BidStates.BID_SENT),
                         "offer_sent": int(OfferStates.OFFER_SENT),
                         "check_time": now + self.check_expiring_bids_offers_seconds,
+                        "bid_sent": int(BidStates.BID_SENT),
+                        "bid_received": int(BidStates.BID_RECEIVED),
+                        "bid_aad": int(BidStates.BID_AACCEPT_DELAY),
+                        "bid_aaf": int(BidStates.BID_AACCEPT_FAIL),
                     },
                 )
                 for entry in q:
@@ -9618,13 +9680,15 @@ class BasicSwap(BaseApp):
                             offers_to_expire.add(record_id)
 
             for bid_id in bids_to_expire:
-                query = "SELECT expire_at, states FROM bids WHERE bid_id = :bid_id AND active_ind = 1 AND state IN (:bid_received, :bid_sent)"
+                query = "SELECT expire_at, states FROM bids WHERE bid_id = :bid_id AND active_ind = 1 AND state IN (:bid_received, :bid_sent, :bid_aad, :bid_aaf)"
                 rows = cursor.execute(
                     query,
                     {
                         "bid_id": bid_id,
                         "bid_received": int(BidStates.BID_RECEIVED),
                         "bid_sent": int(BidStates.BID_SENT),
+                        "bid_aad": int(BidStates.BID_AACCEPT_DELAY),
+                        "bid_aaf": int(BidStates.BID_AACCEPT_FAIL),
                     },
                 ).fetchall()
                 if len(rows) > 0:
@@ -9699,8 +9763,8 @@ class BasicSwap(BaseApp):
             now: int = self.getTime()
             self.expireBidsAndOffers(now)
 
-            if now - self._last_checked_progress >= self.check_progress_seconds:
             to_remove = []
+            if now - self._last_checked_progress >= self.check_progress_seconds:
                 for bid_id, v in self.swaps_in_progress.items():
                     try:
                         if self.checkBidState(bid_id, v[0], v[1]) is True:
@@ -9748,9 +9812,20 @@ class BasicSwap(BaseApp):
                 self.checkQueuedActions()
                 self._last_checked_actions = now
 
-            if now - self._last_checked_xmr_swaps >= self.check_xmr_swaps_seconds:
+            if (
-                self.checkXmrSwaps()
+                now - self._last_checked_split_messages
-                self._last_checked_xmr_swaps = now
+                >= self.check_split_messages_seconds
+            ):
+                self.checkSplitMessages()
+                self._last_checked_split_messages = now
+
+            if (
+                len(to_remove) > 0
+                or now - self._last_checked_delayed_auto_accept
+                >= self.check_delayed_auto_accept_seconds
+            ):
+                self.checkDelayedAutoAccept()
+                self._last_checked_delayed_auto_accept = now
 
         except Exception as ex:
             self.logException(f"update {ex}")
@@ -10113,7 +10188,7 @@ class BasicSwap(BaseApp):
                COUNT(CASE WHEN b.was_sent THEN 1 ELSE NULL END) AS count_sent,
                COUNT(CASE WHEN b.was_sent AND (s.in_progress OR (s.swap_ended = 0 AND b.expire_at > :now AND o.expire_at > :now)) THEN 1 ELSE NULL END) AS count_sent_active,
                COUNT(CASE WHEN b.was_received THEN 1 ELSE NULL END) AS count_received,
-               COUNT(CASE WHEN b.was_received AND b.state = :received_state AND b.expire_at > :now AND o.expire_at > :now THEN 1 ELSE NULL END) AS count_available,
+               COUNT(CASE WHEN b.was_received AND s.can_accept AND b.expire_at > :now AND o.expire_at > :now THEN 1 ELSE NULL END) AS count_available,
                COUNT(CASE WHEN b.was_received AND (s.in_progress OR (s.swap_ended = 0 AND b.expire_at > :now AND o.expire_at > :now)) THEN 1 ELSE NULL END) AS count_recv_active
                FROM bids b
                JOIN offers o ON b.offer_id = o.offer_id
@@ -10131,9 +10206,7 @@ class BasicSwap(BaseApp):
 
         try:
             cursor = self.openDB()
-            q = cursor.execute(
+            q = cursor.execute(q_bids_str, {"now": now}).fetchone()
-                q_bids_str, {"now": now, "received_state": int(BidStates.BID_RECEIVED)}
-            ).fetchone()
             bids_sent = q[0]
             bids_sent_active = q[1]
             bids_received = q[2]

basicswap/basicswap_util.py

@@ -1,6 +1,7 @@
 # -*- coding: utf-8 -*-
 
 # Copyright (c) 2021-2024 tecnovert
+# Copyright (c) 2024 The Basicswap developers
 # Distributed under the MIT software license, see the accompanying
 # file LICENSE or http://www.opensource.org/licenses/mit-license.php.
 
@@ -106,6 +107,8 @@ class BidStates(IntEnum):
     BID_REQUEST_SENT = 29
     BID_REQUEST_ACCEPTED = 30
     BID_EXPIRED = 31
+    BID_AACCEPT_DELAY = 32
+    BID_AACCEPT_FAIL = 33
 
 
 class TxStates(IntEnum):
@@ -330,6 +333,10 @@ def strBidState(state):
         return "Unknown bid state"
     if state == BidStates.BID_EXPIRED:
         return "Expired"
+    if state == BidStates.BID_AACCEPT_DELAY:
+        return "Auto accept delay"
+    if state == BidStates.BID_AACCEPT_FAIL:
+        return "Auto accept failed"
     return "Unknown" + " " + str(state)
 
 
@@ -539,6 +546,14 @@ inactive_states = [
 ]
 
 
+def canAcceptBidState(state):
+    return state in (
+        BidStates.BID_RECEIVED,
+        BidStates.BID_AACCEPT_DELAY,
+        BidStates.BID_AACCEPT_FAIL,
+    )
+
+
 def isActiveBidState(state):
     if state >= BidStates.BID_ACCEPTED and state < BidStates.SWAP_COMPLETED:
         return True

basicswap/db.py

@@ -13,8 +13,8 @@ from enum import IntEnum, auto
 from typing import Optional
 
 
-CURRENT_DB_VERSION = 24
+CURRENT_DB_VERSION = 25
-CURRENT_DB_DATA_VERSION = 4
+CURRENT_DB_DATA_VERSION = 5
 
 
 class Concepts(IntEnum):
@@ -601,6 +601,7 @@ class BidState(Table):
     in_error = Column("integer")
     swap_failed = Column("integer")
     swap_ended = Column("integer")
+    can_accept = Column("integer")
 
     note = Column("string")
     created_at = Column("integer")
@@ -751,7 +752,6 @@ class DBMethods:
 
     def closeDBCursor(self, cursor):
         assert self.mxDB.locked()
-
         if cursor:
             cursor.close()
 

basicswap/db_upgrades.py

@@ -18,6 +18,7 @@ from .db import (
 
 from .basicswap_util import (
     BidStates,
+    canAcceptBidState,
     isActiveBidState,
     isErrorBidState,
     isFailingBidState,
@@ -26,6 +27,23 @@ from .basicswap_util import (
 )
 
 
+def addBidState(self, state, now, cursor):
+    self.add(
+        BidState(
+            active_ind=1,
+            state_id=int(state),
+            in_progress=isActiveBidState(state),
+            in_error=isErrorBidState(state),
+            swap_failed=isFailingBidState(state),
+            swap_ended=isFinalBidState(state),
+            can_accept=canAcceptBidState(state),
+            label=strBidState(state),
+            created_at=now,
+        ),
+        cursor,
+    )
+
+
 def upgradeDatabaseData(self, data_version):
     if data_version >= CURRENT_DB_DATA_VERSION:
         return
@@ -69,19 +87,7 @@ def upgradeDatabaseData(self, data_version):
             )
 
             for state in BidStates:
-                self.add(
+                addBidState(self, state, now, cursor)
-                    BidState(
-                        active_ind=1,
-                        state_id=int(state),
-                        in_progress=isActiveBidState(state),
-                        in_error=isErrorBidState(state),
-                        swap_failed=isFailingBidState(state),
-                        swap_ended=isFinalBidState(state),
-                        label=strBidState(state),
-                        created_at=now,
-                    ),
-                    cursor,
-                )
 
         if data_version > 0 and data_version < 2:
             for state in (
@@ -117,19 +123,15 @@ def upgradeDatabaseData(self, data_version):
                 BidStates.BID_REQUEST_SENT,
                 BidStates.BID_REQUEST_ACCEPTED,
             ):
-                self.add(
+                addBidState(self, state, now, cursor)
-                    BidState(
+
-                        active_ind=1,
+        if data_version > 0 and data_version < 5:
-                        state_id=int(state),
+            for state in (
-                        in_progress=isActiveBidState(state),
+                BidStates.BID_EXPIRED,
-                        in_error=isErrorBidState(state),
+                BidStates.BID_AACCEPT_DELAY,
-                        swap_failed=isFailingBidState(state),
+                BidStates.BID_AACCEPT_FAIL,
-                        swap_ended=isFinalBidState(state),
+            ):
-                        label=strBidState(state),
+                addBidState(self, state, now, cursor)
-                        created_at=now,
-                    ),
-                    cursor,
-                )
 
         self.db_data_version = CURRENT_DB_DATA_VERSION
         self.setIntKV("db_data_version", self.db_data_version, cursor)
@@ -405,10 +407,13 @@ def upgradeDatabase(self, db_version):
                         PRIMARY KEY (record_id))"""
                 )
                 cursor.execute("ALTER TABLE bids ADD COLUMN pkhash_buyer_to BLOB")
+            elif current_version == 24:
+                db_version += 1
+                cursor.execute("ALTER TABLE bidstates ADD COLUMN can_accept INTEGER")
             if current_version != db_version:
                 self.db_version = db_version
                 self.setIntKV("db_version", db_version, cursor)
-                cursor = self.commitDB()
+                self.commitDB()
                 self.log.info("Upgraded database to version {}".format(self.db_version))
                 continue
         except Exception as e:

basicswap/ui/page_bids.py

@@ -25,6 +25,7 @@ from basicswap.basicswap_util import (
     BidStates,
     SwapTypes,
     DebugTypes,
+    canAcceptBidState,
     strTxState,
     strBidState,
 )
@@ -124,7 +125,7 @@ def page_bid(self, url_split, post_string):
 
     if len(data["addr_from_label"]) > 0:
         data["addr_from_label"] = "(" + data["addr_from_label"] + ")"
-    data["can_accept_bid"] = True if bid.state == BidStates.BID_RECEIVED else False
+    data["can_accept_bid"] = True if canAcceptBidState(bid.state) else False
 
     if swap_client.debug_ui:
         data["bid_actions"] = [

basicswap/ui/util.py

@@ -20,6 +20,7 @@ from basicswap.basicswap_util import (
     ActionTypes,
     BidStates,
     DebugTypes,
+    canAcceptBidState,
     getLastBidState,
     strBidState,
     strTxState,
@@ -258,7 +259,7 @@ def describeBid(
         if bid.state == BidStates.BID_RECEIVING:
             # Offerer receiving bid from bidder
             state_description = "Waiting for bid to be fully received"
-        elif bid.state == BidStates.BID_RECEIVED:
+        elif canAcceptBidState(bid.state):
             # Offerer received bid from bidder
             # TODO: Manual vs automatic
             state_description = "Bid must be accepted"
@@ -270,7 +271,7 @@ def describeBid(
             )
         elif bid.state == BidStates.SWAP_DELAYING:
             last_state = getLastBidState(bid.states)
-            if last_state == BidStates.BID_RECEIVED:
+            if canAcceptBidState(last_state):
                 state_description = "Delaying before accepting bid"
             elif last_state == BidStates.BID_RECEIVING_ACC:
                 state_description = "Delaying before responding to accepted bid"

basicswap/util/__init__.py

@@ -26,6 +26,10 @@ class AutomationConstraint(ValueError):
     pass
 
 
+class AutomationConstraintTemporary(ValueError):
+    pass
+
+
 class InactiveCoin(Exception):
     def __init__(self, coinid):
         self.coinid = coinid

doc/release-notes.md

@@ -9,7 +9,6 @@
 - Incoming expired offers no longer raise an error.
 
 
-
 0.13.2
 ==============
 

tests/basicswap/extended/test_scripts.py

@@ -900,6 +900,7 @@ class Test(unittest.TestCase):
 
         waitForServer(self.delay_event, UI_PORT + 0)
         waitForServer(self.delay_event, UI_PORT + 1)
+        waitForServer(self.delay_event, UI_PORT + 2)
 
         logging.info("Reset test")
         clear_offers(self.delay_event, 0)
@@ -926,6 +927,13 @@ class Test(unittest.TestCase):
                 expect_balance,
             )
 
+        inactive_states = (
+            "Received",
+            "Completed",
+            "Auto accept failed",
+            "Auto accept delay",
+        )
+
         # Try post bids at the same time
         from multiprocessing import Process
 
@@ -933,8 +941,12 @@ class Test(unittest.TestCase):
             post_json = {"offer_id": offer_id, "amount_from": amount}
             read_json_api(UI_PORT + node_from, "bids/new", post_json)
 
-        def test_bid_pair(amount_1, amount_2, expect_inactive, delay_event):
+        def test_bid_pair(
-            logging.debug(f"test_bid_pair {amount_1} {amount_2}, {expect_inactive}")
+            amount_1, amount_2, max_active, delay_event, final_completed=None
+        ):
+            logging.debug(
+                f"test_bid_pair {amount_1} {amount_2}, {max_active}, {final_completed}"
+            )
 
             wait_for_balance(
                 self.delay_event,
@@ -966,6 +978,31 @@ class Test(unittest.TestCase):
             pbid1.join()
             pbid2.join()
 
+            if final_completed is not None:
+                # bids should complete
+
+                logging.info("Waiting for bids to settle")
+                for i in range(50):
+
+                    delay_event.wait(5)
+                    bids = wait_for_bids(self.delay_event, 0, 2, offer_id)
+
+                    if any(bid["bid_state"] == "Receiving" for bid in bids):
+                        continue
+
+                    logging.info(f"[rm] bids {bids}")
+                    num_active_state = 0
+                    num_completed = 0
+                    for bid in bids:
+                        if bid["bid_state"] == "Completed":
+                            num_completed += 1
+                        if bid["bid_state"] not in inactive_states:
+                            num_active_state += 1
+                    assert num_active_state <= max_active
+                    if num_completed == final_completed:
+                        return
+                raise ValueError(f"Failed to complete {num_completed} bids {bids}")
+
             for i in range(5):
                 logging.info("Waiting for bids to settle")
 
@@ -974,16 +1011,18 @@ class Test(unittest.TestCase):
 
                 if any(bid["bid_state"] == "Receiving" for bid in bids):
                     continue
+
+                logging.info(f"[rm] bids {bids}")
                 break
 
-            num_received_state = 0
+            num_active_state = 0
             for bid in bids:
-                if bid["bid_state"] == "Received":
+                if bid["bid_state"] not in inactive_states:
-                    num_received_state += 1
+                    num_active_state += 1
-            assert num_received_state == expect_inactive
+            assert num_active_state == max_active
 
         # Bids with a combined value less than the offer value should both be accepted
-        test_bid_pair(1.1, 1.2, 0, self.delay_event)
+        test_bid_pair(1.1, 1.2, 2, self.delay_event)
 
         # Only one bid of bids with a combined value greater than the offer value should be accepted
         test_bid_pair(1.1, 9.2, 1, self.delay_event)
@@ -1006,7 +1045,7 @@ class Test(unittest.TestCase):
             assert json_rv["note"] == "changed"
 
             # Only one bid should be active
-            test_bid_pair(1.1, 1.2, 1, self.delay_event)
+            test_bid_pair(1.1, 1.2, 1, self.delay_event, 2)
 
         finally:
             logging.debug("Reset max_concurrent_bids")