All versions back log

28.03.2026

• Connection state monitoring: all 4 platform components (MT4 Manager, MT4 Pump, MT5 Manager, MT5 Pump) now correctly report Connected/Disconnected status. Previously only MT4 Pump transitions were tracked; disconnect notifications for the other 3 components were silently skipped.

27.03.2026

• Fixed RabbitMQ message deserialization failure. Messages compressed with GZip by upstream services are now correctly decompressed before processing. Both compressed and uncompressed messages are supported transparently.

17.03.2026

• GET /api/TradePlatforms, GET /api/Organizations — server-side response caching (1s TTL). Repeated requests return cached data with significantly lower latency.

10.03.2026

• MT4 pumping: attempt to fix delays on User/Trade/MarginCall updates caused by native pump thread saturation. All event processing now offloaded from native pump thread immediately, preserving strict FIFO event ordering.

08.03.2026

• MT5 SDK updated from 4755 to 5660:
  • UsersPasswords enum: added Trader password type (for separate trader password distinct from main login password)
  • MT5Deal DTO: added PartyID field (counterparty identification for ECN/exchange deals)
  • MT5Order DTO: added PartyID field (counterparty identification)

18.01.2026

• MT5 added:
  • POST DealerBalanceRaw - raw balance operation that bypasses standard credit/margin validation checks (for administrative corrections)

28.03.2025

• WebAPI runs on top of .NET v9.0

28.11.2024

• MT5 added:
  • POST OrderDeleteBatch
  • POST DealDeleteBatch
  • POST PositionDeleteBatch

13.08.2024

• added MT5AccountMarginCallEventArgs StreamMarginCallUpdates(TradePlatformId) method to MT5 hub to monitor MC/SO events. Every time something happen on server, you will receive structure which JS object has self-explanatory example below:

    account: {
      "login": 2009,
      "currencyDigits": 2,
      "balance": 3025.7,
      "credit": 0,
      "margin": 3279.67,
      "marginFree": 6.03,
      "marginLevel": 100.18385996152051,
      "marginLeverage": 100,
      "profit": 386,
      "storage": 0,
      "floating": 386,
      "equity": 3285.7,
      "soActivation": "None",
      "soTime": null,
      "soLevel": 0,
      "soEquity": 0,
      "soMargin": 0,
      "blockedCommission": -126,
      "blockedProfit": -185428,
      "marginInitial": 0,
      "marginMaintenance": 0,
   "assets": 0,              
      "liabilities": 0
    }
    type: "MarginCall"
    direction: "Leave"

Direction can be Enter or Leave, Type can be MarginCall or StopOut.

26.06.2024

• in MT5 user's rights enumerable, added missing values, so JSON parser will be ok;

03.06.2024

• MT5 added:
  • GET HistoryRequestByGroup
  • POST HistoryRequestByTickets
  • POST OrderRequestByTickets
  • POST DealRequestByTickets

31.05.2024

• MT5 order's ActivationFlags field type switched from uint to TradeActivationFlags type;

03.05.2024

• js libs to reference (to match client's SignalR libs with server):
  • https://ajax.aspnetcdn.com/ajax/jquery/jquery-2.2.0.min.js
  • https://cdnjs.cloudflare.com/ajax/libs/microsoft-signalr/6.0.25/signalr.min.js
• slightly reduced latency during SignalR events;
• added methods to MT5 controller:
  • DealRequestByGroup
  • DealRequestByGroupSymbol
  • OrderGetByGroup
  • OrderGetBySymbol
  • OrderRequestByGroup
  • OrderRequestByGroupSymbol
  • PositionGetByGroup
  • PositionGetBySymbol

15.03.2024

• SymbolUpdate added to MT5 controller;

15.03.2024

• all MT5 enums now serialized as string, instead of int/bitMask;
• including MT4's AggregationType;
• to OrderFilling enum BoC added, FOK and IOC renamed to FoK and IoC;
• OrderTime GTC -> GtC;
• OrderActivation Stoplimit -> StopLimit, Stopout -> StopOut;
• UsersRights Technical and ExcludeReports enums added;
• MT5 manager API b4230 support;

22.01.2024

• MT5 ManagerAPI b4150;
• Retcode replaced with RetCode where applicable;
• added DealUpdate method to MT5 controller;

24.11.2023

• fixed mistake in SubscribeToTicks, SubscribeToAllTicks, UnsubscribeFromAllTicks.

22.11.2023

• added to MT5:
  • UserGetByLogins
  • PositionGetByTickets
  • GroupGet
  • GroupRequest
  • GroupRequestArray
  • OrderGet
  • OrderGetByTickets
  • OrderGetByLogins
  • DealRequestByTickets
  • DealRequestByLogins
  • DealRequestByTicket

21.11.2023

• added to MT5:
  • ChartRequest
  • SymbolGet
  • Instead of date 01.01.1970 - null will be returned, where date time is nullable field;
  • SymbolRequestArray
• MT5 Hub:
  • SubscribeToSymbols
    • OnSymbol and OnSymbolSync callbacks;
  • UnsubscribeFromSymbols
  • SubscribeToTicks, SubscribeToAllTicks
    • OnTick callback;
  • UnsubscribeFromAllTicks

10.11.2023

• added streams to MT5 hub:
  • SubscribeToPositions
  • SubscribeToOrders

07.11.2023

• MT5 UserAdd: If any of passwords (Password or PasswordInvestor) is null or empty, both of them will be generated. We will generate passwords and call manager api method to create user. If MT5 does not like our password, we will try again with a new pair, a maximum of 10 times;
• MT5 ManagerCurrent returns updated structure signature;

07.11.2023

• MT5 methods added:
  • PositionGetByLogins
• reduced usage of MetaQuotes's SMTTime in favor of default .NET DateTime to/from UnixTime/FILETIME converter;

30.10.2023

• Added methods to MT5 hub:
  • SubscribeToUsers, updates will be sent through callback(-s):
    • OnUser
  • UnsubscribeFromUsers
  • SubscribeToDeals, updates will be sent through callback(-s):
    • OnDeal
    • OnDealClean
  • UnsubscribeFromDeals

28.10.2023

• MT5 API methods added:
  • UserDelete
  • ClientDelete
  • UserGetByGroup

22.09.2023

• MT5 methods added:
  • TimeGet
  • ManagerCurrent
  • UserAccountRequest

18.07.2023

• MT5 DealerSend response signature changed;

14.06.2023

• added UserAccountGet method to MT5 controller;

08.05.2023

• UserUpdate now POST method;
• fixed problems with MT5 connectivity;
• MT5Client requires PersonName;

05.05.2023

• MT5 controller: added TimeServer method;
• rewritten MT5 keep connection alive routine;

11.04.2023

• MT5 managerAPI used: b3661;
• added UserUpdate, UserPasswordCheck and UserPasswordChange MT5 methods.

21.03.2023

• added ServerTime method to MT4 endpoint;

15.01.2023 SignalR MT4 HUB major update

• MT4 connection will stay alive after first access forever;
• Connect method supports ConnectArgs structure where you can specify TimeoutMs, in milliseconds (30 seconds by default). You shall start your duties from this method;
• SetTicksAggregationSettings - not yet available;
• SubscribeToAllMarginUpdates - not yet available;
• UnsubscribeFromAllMarginUpdates - not yet available;
• UnsubscribeFromMarginUpdates - not yet available;
• SubscribeToMarginUpdates - not yet available;
• StreamMarginDiff - not yet available;
• Ping removed, use Connect instead;

MT4 Hub migration guide:

All methods awaits structure and send structures.

Because of guide

Old code:

connection.invoke("SubscribeToTicks", tradePlatform, "EURUSD")

New code:

connection.invoke("SubscribeToTicks", {tradePlatform, symbol: "EURUSD"})

All callbacks now return structures.

Old code:

connection.on("onTick", function (tradePlatform, tick) { 
    /* your code here */
});

New code:

connection.on("onTick", function (args) {
    const {tradePlatform, tick} = args;
    /* your code here */
});

Check CPlugin.WebAPI.Realtime.ts for further details.

28.12.2022

• [fix] StreamTrades sent updates for all platforms, regardless of chosen one;
• [fix] StreamUserUpdates sent updates for all platforms, regardless of chosen one;

20.12.2022

• RefreshAPI method removed from /TradePlatforms controller.

14.12.2022

• added TradesGetByLogin method to MT4 RESTful

14.12.2022 StreamMarginDiff

• IAsyncEnumerable -> ChannelReader;
• SamplingMs min is 0;
• added to MarginLevelDiff - Tm field;
• dont enqueue more records, until buffer completely flush;

24.11.2022

• StreamUserUpdates returns UserUpdate structure which is

public class UserUpdate
{
    public TransactionType Type;
    public UserRecord      User;
}

22.11.2022

• added StreamMarginDiff to MT4 hub;

21.11.2022

• added StreamUserUpdates to MT4 hub;

16.11.2022

• [fix] when manager account does not hav enough right it will not throw exception anymore, but will return

{
  "errorType": "MT4API",
  "errorCode": "NotEnoughRights",
  "errorDescription": "Not enough rights",
  "requestId": "unique id"
}

• JournalRequest, TradeRecordsRequest, TradesUserHistory, CfgRequestSymbol, AdmBalanceCheck functions will not throw exception but will return BadRequest if manager account does not have enough rights;

13.10.2022

• fixed memory leakage during SignalR operations;

12.10.2022

• added method to MT4 hub: IAsyncEnumerable<TradeExEventPayload> StreamTrades(Guid tradePlatform)

29.09.2022

• added method to MT4 hub: bool Connect(Guid tradePlatform)
• MT4 hub's callback OnMT4ConnectionStatus will only be run once status changed, and never during connect to hub;

23.09.2022

• [fix] problem with MT4::UserRecordNew

21.09.2022

• Connect method removed from MT4 hub;
• configurable KeepConnectionAliveDuring parameter;
• [fix] problem with disconnecting inactive trade platform even when signalR client still online;

15.09.2022

• added DealerBalance MT5 method
• added ClientRequest MT5 method
• added UserRequest MT5 method

13.08.2022

• SignalR Tick structure got LastTime field

08.08.2022

• added StreamMarginCallUpdates method to stream margin call updates. During subscription you get all accounts in M/C state. Then, only updates will be send (mc->normal and normal->mc). Code example is here

04.08.2022

• added auth support into swagger doc UI
• added StreamAllTicks method to the MT4 hub, read more here

03.08.2022

• MT4 call added CfgRequestSymbolGroup, more info here

21.07.2022

• MT5's call added ClientAdd

20.07.2022

• MT5's calls HistoryRequest, DealRequest return customized enums
• DealerSend call now use customized enums, so call with parameters {"Login":2000, "Action": "TA_DEALER_POS_EXECUTE", "Symbol":"EURUSD", "Volume":100, "Type": "OP_BUY", "PriceOrder": 1.01} will not work, please convert arguments to the new format {"Login":2000, "Action": "DealerPosExecute", "Symbol":"EURUSD", "Volume":100, "Type": "Buy", "PriceOrder": 1.01}
• Added UserAdd method

13.07.2022

• added DealRequest MT5 method

13.07.2022

• all enums will be serialized as strings

11.07.2022

• added method HistoryRequest to MT5 controller

01.03.2022

• API documentation augmented

28.02.2022

• added TestController::TryParseDateTime to test .NET DateTime parser values validity;
• possible memory leakage fixes;
• added /healthz URL endpoint to tell the status, possible values are (HTTP Code, string): [{200,Healthy}, {200,Degraded}, {503,Unhealthy}];
• V2 endpoint removed. There is a way to share error details even when we return 404 NOT FOUND (MT4/MT5 resource not found);
• Swagger/OpenAPI documentation updated: methods grouped by entity type, added description of 400,404 results, where applicable;

14.02.2022

• added 'CfgRequestSymbol', 'CfgRequestSymbol/{symbol}' methods to MT4 controller;
• fixed problem with UserRecordsRequest method;

v1.3 (09.02.2022)

• migrated to .NET 6.0;
• if connection to MT4 was not used during past 15 minutes - it will disconnect from MT4 to reduce load;

v1.2 (17.11.2021)

• migrated to .NET 5.0;
• api-version passed within query string not supported anymore, to specify api version. Use URL path instead;
• added v2 api endpoint;

18.10.2021

• fixed problem when trade platform settings updated and WebAPI still used old credentials;
• use MT4 mtmanapi v1320
• performance optimization

28.06.2021

• added aggregation of price stream, SignalR::MT4 hub now have method SetTicksAggregationSettings. Take a look to demo page source code to get example of use.

1.1.2

• WebAPI subscribed to updated ManagerAPI method OnlineExChanges (OnlineEx were used before), which is now distinct against changes.

1.1.1.10

• added void SubscribeToOnlineUpdates(Guid tradePlatform), void UnsubscribeFromOnlineUpdates(Guid tradePlatform) to MT4 hub and corresponding OnOnlineUpdate(Guid tpConnectionKey, TransactionType transactionType, int login) callback.
• added signalr example links to main page

1.1.1.9

• added UserRecordsRequest and UsersRequest methods to MT4 controller

1.1.1.7

• native MT4ManagerAPI updated to b1310

1.1.1.6

• minor update

1.1.1.5

• updated MT4 ManagerAPI wrapper to version 4.1260.1.8. If MT4 server DNS name cannot be resolved, it will try again using longer periods after each failed step, to avoid spamming journal.

1.1.1.2

• added "CfgUpdateSymbol" and "SymbolsRefresh" methods

1.1.1.1

• MT4 hub will notify SignalR consumers about current MT4 pumping status

1.1.1.0

• ManagerAPI pool ceased

1.1.0.24

• cached responses now in lower case, to match application standards

1.1.0.23

• added support for cached responses to make requests idempotent
  at any URL it can be added cacheId of Guid type,
  and cacheTimeout specifying timout in seconds.
  Example: /API/MT4/{mt4id}/JournalRequest/2020-08-01/2020-09-20/Full?cacheId=63cb3a5f-1bd6-445d-8da8-1b3d8a6ce70d&cacheTimeout=60
  Next time if cacheId specified, it will search in DB for cached record associated for this ID, if found - will return cached data instead.
  After cacheTimeout seconds record will be deleted from DB permanently and will not be available.

1.1.0.21

• added API methods execution time logging

1.1.0.20

• performance optimization

1.1.0.19

• when there were no open trades, by mistake, OnMarginUpdate Hub method returned zero balance

1.1.0.18

• added UnsubscribeFromMarginUpdates to MT4Hub

1.1.0.17

• added method MT4::JournalRequest

1.1.0.16

• minor updates

1.1.0.15

• [fix] mistake when MT4Hub called OnMarginUpdate callback with empty list even client did not subscribe for it

1.1.0.14

• internal code optimization

1.1.0.13

• Hubs:MT4 margin level will be sent for all subscribed users, if subscribed explicitly, does not matter if there any open positions. Or if subscribed to all data, it will send for those accounts who have open positions.

1.1.0.12

• by default, MT platform connection timeout now 30 seconds. (previously was 1..5 in different places)
• added MT4::ManagerCommon and MT4::ManagerCommonEx methods
• x64 runtime

1.1.0.11

• SignalR endpoint rewritten to run under ASP.NET Core
• There is two example webpages: [simple test] and [MT4 demo], check their page source code to get the idea
• typescript example included
• MT4::AdmBalanceCheck login to be specified as of AdmBalanceCheck/<login>
• MT4::AdmBalanceCheck always return value of type AdmBalanceCheck (in comparison to ManagerAPI which does not return anything, if balance is ok)
• MT4::AdmBalanceCheck now supports only single login specified within URI AdmBalanceCheck/{login:int:min(1)}
• MT4::AdmBalanceFix now supports only single login specified within URI AdmBalanceCheck/{login:int:min(1)}

1.1.0.10

• fixed possible memory leaking problem making app crash unexpectedly

1.1.0.9

• fixed problem with MT4::UserRecordNew call result, passwords were suffixed with \0 characters

v1.1.0.8

• slightly reduced memory usage
• performance significantly tuned up
• MT4::UserPasswordSet now requires Update permission, instead of Request
• MT4::UserRecordNew API method accept and return structure of type UserRecordNew where password and password investor presented in plain text, and only once. Following requests of user settings will return both passwords stored in base64
• Added MT4::AdmTradeRecordModify method
• added MT4::AdmBalanceCheck and MT4::AdmBalanceFix methods

v1.1.0.7

• added GET method for MT4 MarginLevelRequest which does not require pumping and does not need open trades to return a result (in comparison to MarginLevelGet)

v1.1.0.6

• significant request execution speed gain [link to our blog]

v1.1.0.5

• [fix] issue with applying new MT4 settings after update.

v1.1.0.4

• starting from now TickInfoLast will not make any calls to MT4, it will return internal buffer instead. But, if you want to collect prices you should add symbol to watch list by making a very single call to SymbolAdd. Then during whole WebAPI runtime it will collect prices for you into internal buffer. Keep in mind, this is not a history, only most recent prices for each explicitely monitored symbol. By default, symbol will be in market watch when there are open trades on it. Otherwise, you will not see prices until add symbol to watch list.
• now there are two methods :
  • TickInfoLast/{symbol} - request prices for specified symbol only
  • TickInfoLast - request prices for all monitored symbols

v1.1.0.3

• added GET MT4/<id>/TickInfoLast
• added GET MT4/<id>/TicksRequest
• added GET MT4/<id>/ChartRequest

v1.1.0.2

• added POST API/MT4/<id>/CfgUpdateGroup
• added POST API/MT4/<id>/UserRecordUpdate

v1.1.0.0

• source code migrated to asp.net core 2.1
• OData endpoint will not be served anymore. RESTful JSON WebAPI will take place
• /odata/[controller]({id}) should be redirected to `/api/[controller]/{?id}

v1.0.0.72

• fixed issue with wrtong error message returned while being not authenticated.

v1.0.0.71

• makes possible for: /odata/MT4Users(1000)/NS.MarginLevelGet()?`$select=Margin,Free

v1.0.0.67

• added very first support of MT5 platform
• added POST /odata/TradePlatforms({Id})/NS.MT5DealerSend to send trade request to MT5 server
• now it notice MT4/MT5 settings updates came from Admin portal to reconnect with new credentials