Trading Platform Feed WebSocket API

Trading Platform Feed WebSocket API is used to connect to the Trading Platform using secure web sockets technology (wss://) to get feed information (currencies, symbols) and subscribe to real-time feed ticks.

Contents

• Connect and login
  • Login request
  • Login response
  • Login error
  • Authentication
  • Two-factor server response
  • Two-factor client request
  • Two-factor error
  • Example: Connect and login
  • Example: Two-factor login
• Disconnect
  • Example: Disconnect
• Session information
  • Session information request
  • Session information response
  • Session information error
  • Example: Session information
• Currency information
  • Currency types request
  • Currency types response
  • Currency types error
  • Example: Get all currency types
  • Currency information request
  • Currency information response
  • Currency information error
  • Example: Get all currencies information
  • Example: Get currencies by names
  • Example: Get currencies by types
• Symbols information
  • Symbols information request
  • Symbols information response
  • Symbols information error
  • Example: Get all symbols information
  • Example: Get symbols by names
  • Example: Get symbols by security names
• Feed subscribe
  • Feed subscribe request
  • Frequency Feed subscribe request
  • Feed subscribe response
  • Feed subscribe error
  • Example: Subscribe to symbols feed ticks
  • Example: Subscribe to symbols frequency feed ticks
• Feed unsubscribe
  • Feed unsubscribe request
  • Feed unsubscribe response
  • Feed unsubscribe error
  • Example: Unsubscribe from symbols feed ticks
• Bar Feed subscribe
  • Bar Feed subscribe request
  • Bar Feed subscribe response
  • Bar Feed subscribe error
  • Example: Subscribe to symbols bar updates
• Bar Feed unsubscribe
  • Bar Feed unsubscribe request
  • Bar Feed unsubscribe response
  • Bar Feed unsubscribe error
  • Example: Unsubscribe from symbols bar updates
• Quote history
  • Quote history version request
  • Quote history symbols request
  • Quote history periodicities request
  • Quote history bars meta information request
  • Quote history bars request
  • Example: Get quote history version
  • Example: Get quote history supported symbols
  • Example: Get quote history supported periodicities
  • Example: Get quote history bars meta information
  • Example: Get quote history bars
• Interest Rate history
  • Interest rate history request
  • Example: Get interest rate history
• Notifications
  • Notification: Feed tick update
  • Notification: Bar update

Connect and login

Connection operation is perfromed in two phases. First you need to create and instance of WebSocket object and provide an address to connect. Then you should perfrom HMAC authentication in 'onopen' event handler.

Login request

Login request should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Request": "Login",
  "Params": {
    "AuthType": "HMAC",
    "WebApiId":  <Web API Id>,
    "WebApiKey": <Web API Key>,
    "Timestamp": <timestamp (e.g. Date.now(), milliseconds)>,
    "Signature": <signature>,
    "DeviceId":  <Device Id>,
    "AppSessionId":  <Application Session Id>
  }
}
              

Login response

Success Login response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "Login",
  "Result": {
    "Info": "ok",
    "TwoFactorFlag": true or false
  }
}
              

Login error

Error Login response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "Error",
  "Error": <error description from Trading Platform>
}
              

Authentication

Signature should be calculated from "<timestamp>+<id>+<key>" with the "<secret>" using HMAC/SHA256 with BASE64 encoding. For example you can use Crypto-JS API to calculate the required signature:

function CreateSignature(timestamp, id, key, secret) {
  var hash = CryptoJS.HmacSHA256(timestamp + id + key, secret);
  return CryptoJS.enc.Base64.stringify(hash);
}
              

Two-factor server response

After success Login if session requires Two-factor authentication Trading Platform will send TwoFactor response. It should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Response": "TwoFactor",
  "Result": {
    "Info": "Two-factor authentication is required."
  }
}
            

Two-factor client request

Client sends Two-factor authentication request to Trading Platform. It should be a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Request": "TwoFactor",
  "Params": {
    "OneTimePassword": <One-time password (e.g. TOTP is generated by Google Authenticator)>
  }
}
              

To resume Two-factor authentication token the client sends request to Trading Platform. It should be a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Request": "TwoFactor",
}
              

Success Two-factor response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "TwoFactor",
  "Result": {
    "Info": "Success",
    "ExpireTime": 1475157761354
  }
}
              

Two-factor error

Error Two-factor response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "TwoFactor",
  "Result": {
    "Info": "Invalid one-time password!"
 }
}
              

Example: Connect and login

Below you will find a complete JavaScript code fragment which connectes to Trading Platform using WebSockets technology:

<script src="http://crypto-js.googlecode.com/svn/tags/3.1.2/build/components/core-min.js" type='text/javascript'></script>
<script src="http://crypto-js.googlecode.com/svn/tags/3.1.2/build/components/enc-base64-min.js" type='text/javascript'></script>
<script src="http://crypto-js.googlecode.com/svn/tags/3.1.2/build/rollups/hmac-sha256.js" type='text/javascript'></script>

<script>

function CreateSignature(timestamp, id, key, secret) {
  var hash = CryptoJS.HmacSHA256(timestamp + id + key, secret);
  return CryptoJS.enc.Base64.stringify(hash);
}

var socket = null;

function Connect(address, id, key, secret) {
  try {
    var timestamp = Date.now();
    var signature = CreateSignature(timestamp, id, key, secret);

    socket = new WebSocket(address);
    console.log('Socket state: ' + socket.readyState);
    socket.onopen = function() {
      console.log('Socket state: ' + socket.readyState + ' (open)');
      var request = {
        Id: "8AF57382-DE83-49DC-9B4E-CF9FF4A4A798",
        Request: "Login",
        Params: {
          AuthType: "HMAC",
          WebApiId: id,
          WebApiKey: key,
          Timestamp: timestamp,
          Signature: signature,
          DeviceId: "WebBrowser",
          AppSessionId: "123"
        }
      };
      var jsonrequest = JSON.stringify(request);
      socket.send(jsonrequest);
    }
    socket.onmessage = function(msg) {
      console.log(msg.data);
    }
    socket.onclose = function() {
      console.log('Socket state: ' + socket.readyState + ' (closed)');
      socket = null;
    }
  } catch(exception) {
    console.log('Error: ' + exception.text);
  }
}

</script>
              

Example: Two-factor

{ "Id": "A6B103E2-E3B4-4E27-A2EE-1BABD75206AA", "Request": "TwoFactor", "Params": { "OneTimePassword": "123456" } }

Disconnect

Disconnection from WebSockets interface is performed simply by closing web socket object:

function Disconnect() {
  socket.close();
}
              

Example: Disconnect

Session information

Client session contains information about the current Trading Platform client session.

Session information request

Session information request should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Request": "SessionInfo"
}
              

Session information response

Success Session information response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "SessionInfo",
  "Result": {
    "ClientSessionId": "8165ADCC-5BFB-41B8-9A88-2F7CF0A0994B",
    "ClientSessionCreated": 1443722400000,
    "TradeAllowed": false
  }
}
              

Session information error

Error Session information response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "Error",
  "Error": <error description from Trading Platform>
}
              

Example: Session information

{ "Id": "A6B103E2-E3B4-4E27-A2EE-1BABD75206AA", "Request": "SessionInfo" }

Currency information

Access to the currency list in Trading Platform.

Currency types request

To get all avaliable currency types request should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Request": "CurrencyTypes"
}
              

Currency types response

Currency types response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "CurrencyTypes",
  "Result": {
    "CurrencyTypes": [{
      "Name": "Default",
      "Description": "Default currency type"
    }, {
      "Name": "Share",
      "Description": "Share"
    }]
  }
}
              

Currency types error

Error currency types response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "Error",
  "Error": <error description from Trading Platform>
}
              

Example: Get all currency types

{ "Id": "DD8EFB75-69BA-4E89-9106-4FE73DAAC5FD", "Request": "CurrencyTypes" }

Currency information request

To get all avaliable currencies request should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Request": "Currencies"
}
              

To get currencies by its names request should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Request": "Currencies",
  "Params": {
    "Currency": "currency1;currency2;currency3"
  }
}
              

NOTE: An empty response may be returned if none of the currencies matches the Params.Currency

To get currencies by its types request should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Request": "Currencies",
  "Params": {
    "Type": <currencyType1;currencyType2;currencyType3>
  }
}
              

NOTE: An empty response may be returned if none of the currencies matches the Params.Type

Currency information response

Currency information response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "Currencies",
  "Result": {
    "Currencies": [{
      "Name": "USD",
      "Precision": 2,
      "Description": "United States Dollar"
    }, {
      "Name": "EUR",
      "Precision": 2,
      "Description": "Euro"
    }]
  }
}
              

Currency information error

Error currency information response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "Error",
  "Error": <error description from Trading Platform>
}
              

Example: Get all currencies

{ "Id": "DD8EFB75-69BA-4E89-9106-4FE73DAAC5FD", "Request": "Currencies" }

Example: Get currencies by names

{ "Id": "037DB206-9E74-4174-A249-18FD1CF4E33C", "Request": "Currencies", "Params": { "Currency": "USD;AUD;CAD;EUR;CHF;GBP;JPY" } }

Example: Get currencies by types

{ "Id": "D4B522BB-A103-473D-BDBA-4041B89AC30F", "Request": "Currencies", "Params": { "Type": "Fiat;Crypto" } }

Symbols information

Access to the symbols list in Trading Platform.

Symbols information request

To get all avaliable symbols request should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Request": "Symbols"
}
              

To get symbols by its names request should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Request": "Symbols",
  "Params": {
    "Symbol": "symbol1;symbol2;symbol3"
  }
}
              

NOTE: An empty response may be returned if none of the symbols matches the Params.Symbol

To get symbols by its security names request should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Request": "Symbols",
  "Params": {
    "Security": "security1;security2;security3"
  }
}
              

NOTE: An empty response may be returned if none of the symbols matches the Params.Security

Symbols information response

Symbols information response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "Symbols",
  "Result": {
    "Symbols": [{
       "Symbol": "EURUSD",
       "Precision": 5,
       "IsTradeAllowed": true,
       "MarginMode": "Forex",
       "ProfitMode": "Forex",
       "ContractSize": 100000,
       "MarginHedged": 0.5,
       "MarginFactor": 1,
       "MarginCurrency": "EUR",
       "MarginCurrencyPrecision": 2,
       "ProfitCurrency": "USD",
       "ProfitCurrencyPrecision": 2,
       "Description": "Euro vs US Dollar",
       "SwapEnabled": true,
       "SwapSizeShort": 2.23,
       "SwapSizeLong": 2.32,
       "MinTradeAmount": 1000.00,
       "MaxTradeAmount": 10000000,
       "TradeAmountStep": 1000.00,
       "CommissionType": "Percentage",
       "CommissionChargeType": "PerLot",
       "CommissionChargeMethod": "RoundTurn",
       "Commission": 0.005,
       "LimitsCommission": 0.005
       "MinCommission": 0.005, 
       "MinCommissionCurrency": 0.005, 
       "DefaultSlippage": 0.005, 
       "StatusGroupId ": "Default",
       "SecurityName": "Forex", 
       "SecurityDescription": "Forex",
       "StopOrderMarginReduction": 0.005, 
       "HiddenLimitOrderMarginReduction": 0.005
    }]
  }
}
              

Symbols information error

Error symbols information response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "Error",
  "Error": <error description from Trading Platform>
}
              

Example: Get all symbols

{ "Id": "E9761F65-2E52-4AB9-B7AC-0979DBDBA3D4", "Request": "Symbols" }

Example: Get symbols by names

{ "Id": "E05B94B7-D437-4323-999F-5BFD56A29551", "Request": "Symbols", "Params": { "Symbol": "EURUSD;AUDCAD;USDJPY" } }

Example: Get symbols by security names

{ "Id": "D003C30F-5F25-4BEE-9103-9182AC6AD869", "Request": "Symbols", "Params": { "Security": "ECN FX Group1;ECN Metals" } }

Feed subscribe

Subscribe to feed ticks updates in Trading Platform.

Feed subscribe request

Feed subscribe request should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Request": "FeedSubscribe",
  "Params": {
    "Subscribe": [{
      "Symbol": <symbol 1>,
      "BookDepth": <book depth 1>
    }, {
      "Symbol": <symbol N>,
      "BookDepth": <book depth N>
    }]
  }
}
              

Frequency Feed subscribe

Subscribe to feed ticks updates in Trading Platform with selected frequency (once per 2^{FrequencyPriority}*500 ms).

Frequency Feed subscribe request

Feed subscribe request should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Request": "FeedSubscribe",
  "Params": {
    "Subscribe": [{
      "Symbol": <symbol 1>,
      "BookDepth": <book depth 1>,   
      "FrequencyPriority" : <frequency priority 1>
    }, {
      "Symbol": <symbol N>,
      "BookDepth": <book depth N>,   
      "FrequencyPriority" : <frequency priority N>
    }]
  }
}
              

Feed subscribe response

Feed subscribe response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "FeedSubscribe",
  "Result": {
    "Snapshot": [{
      "Symbol": "EURUSD",
      "Timestamp": 1443789754160,
      "BestBid": {
        "Type": "Bid",
        "Price": 1.12912,
        "Volume": 1000000
      },
      "BestAsk": {
        "Type": "Ask",
        "Price": 1.12913,
        "Volume": 1000000
      },
      "Bids": [{
        "Type": "Bid",
        "Price": 1.12912,
        "Volume": 1000000
      }, {
        "Type": "Bid",
        "Price": 1.12911,
        "Volume": 2500000
      }, {
        "Type": "Bid",
        "Price": 1.1291,
        "Volume": 3700000
      }],
      "Asks": [{
        "Type": "Ask",
        "Price": 1.12913,
        "Volume": 1000000
      }, {
        "Type": "Ask",
        "Price": 1.12914,
        "Volume": 500000
      }, {
        "Type": "Ask",
        "Price": 1.12915,
        "Volume": 2550000
      }]
    }]
  }
}
              

After feed subscribe response response you will start to recieve feed tick update notifications!

Feed subscribe error

Error feed subscribe response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "Error",
  "Error": <error description from Trading Platform>
}
              

Example: Subscribe to symbols feed ticks

{ "Id": "A03DF33D-E520-483B-892F-73C671127BC2", "Request": "FeedSubscribe", "Params": { "Subscribe": [{ "Symbol": "EURUSD", "BookDepth": 3 }, { "Symbol": "USDJPY", "BookDepth": 3 }] } }

Example: Subscribe to symbols frequency feed ticks

{ "Id": "A03DF33D-E520-483B-892F-73C671127BC2", "Request": "FeedSubscribe", "Params": { "Subscribe": [{ "Symbol": "EURUSD", "BookDepth": 3, "FrequencyPriority" : 0 }, { "Symbol": "USDJPY", "BookDepth": 3, "FrequencyPriority" : 1 }] } }

Feed unsubscribe

Unsubscribe from feed ticks updates in Trading Platform.

Feed unsubscribe request

Feed unsubscribe request should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Request": "FeedSubscribe",
  "Params": {
    "Unsubscribe": [
      <symbol 1>,
      <symbol N>
    }]
  }
}
              

Feed unsubscribe response

Feed unsubscribe response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "FeedSubscribe",
  "Result": {
    "Snapshot": []
  }
}
              

After feed unsubscribe response response you will stop to recieve feed tick update notifications!

Feed unsubscribe error

Error feed unsubscribe response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "Error",
  "Error": <error description from Trading Platform>
}
              

Example: Unsubscribe from symbols feed ticks

{ "Id": "8AB3256A-A57E-4215-8EF7-FEDC13ABED12", "Request": "FeedSubscribe", "Params": { "Unsubscribe": [ "EURUSD", "USDJPY" ] } }

Bar Feed subscribe

Subscribe to feed bar updates in Trading Platform.

Bar Feed subscribe request

Bar Feed subscribe request should be a valid JSON message with the following fields:

{
    "Id": <your unique Id>,
    "Request": "BarFeedSubscribe",
    "Params":
    {
        "Subscribe":
        [{
            "Symbol": <symbol>,
            "BarParams":
            [{
                "Periodicity" : <periodicity>,
                "PriceType" : <price type>
            }]
        }]
    }
}

Bar Feed subscribe response

Bar Feed subscribe response from Trading Platform is a valid JSON message with the following fields:

{
    "Result":
    {
        "Updates":
        [{
            "Low": 1.13788,
            "High": 1.13798,
            "Time": 1643191200000,
            "Open": 1.13788,
            "PriceType": "Ask",
            "Periodicity": "H1"
        }],
        "AskClose": 1.1379,
        "SymbolAlias": "EURUSD"
    },
    "Response": "FeedBarUpdate"

}

After feed subscribe response response you will start to recieve bar update notifications!

Bar Feed subscribe error

Error bar feed subscribe response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "Error",
  "Error": <error description from Trading Platform>
}
              

Example: Subscribe to symbols bar updates

{ "Id": "A03DF33D-E520-483B-892F-73C671127BC2", "Request": "BarFeedSubscribe", "Params": { "Subscribe": [{ "Symbol": "EURUSD", "BarParams": [{ "Periodicity" : "M1", "PriceType" : "Ask" }] }] } }

Bar Feed unsubscribe

Unsubscribe from bar updates in Trading Platform.

Bar Feed unsubscribe request

Bar Feed unsubscribe request should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Request": "BarFeedSubscribe",
  "Params": {
    "Unsubscribe": [
      <symbol 1>,
      <symbol N>
    }]
  }
}
              

Bar Feed unsubscribe response

Bar Feed unsubscribe response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "BarFeedSubscribe",
  "Result": {
  }
}
              

After feed unsubscribe response response you will stop to recieve bar update notifications!

Bar Feed unsubscribe error

Error bar feed unsubscribe response from Trading Platform is a valid JSON message with the following fields:

{
  "Id": <your unique Id>,
  "Response": "Error",
  "Error": <error description from Trading Platform>
}
              

Example: Unsubscribe from symbols bar updates

{ "Id": "8AB3256A-A57E-4215-8EF7-FEDC13ABED12", "Request": "BarFeedSubscribe", "Params": { "Unsubscribe": [ "EURUSD", "USDJPY" ] } }

Quote history

Access to the quote history in Trading Platform.

Quote history version request

Quote history version request should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Request": "QuoteHistoryVersion"
}
              

Quote history supported symbols request

Quote history supported symbols request should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Request": "QuoteHistorySymbols"
}
              

Quote history supported periodicities request

Quote history supported periodicities request should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Request": "QuoteHistoryPeriodicities",
  "Params": {
    "Symbol": <symbol>
  }
}
              

Quote history bars meta information request

Quote history bars meta information request should be a valid JSON message with the following fields:

{
  "Id": <some unique Id>,
  "Request": "QuoteHistoryBarsInfo",
  "Params": {
    "Symbol": <symbol>,
    "Periodicity": <periodicity>,
    "PriceType": <bid/ask>
  }
}
              

Quote history bars request

Quote history bars request should be a valid JSON message with the following fields:

    {
    "Id": <some unique Id>,
    "Request": "QuoteHistoryBars",
    "Params": {
    "Symbol": <symbol>,
    "Periodicity": <periodicity>,
    "PriceType": <bid/ask>,
    "Timestamp": <timestamp in milliseconds>,
    "Count": <[-1000, -1]/[1, 1000]>
    }
    }

Example: Get quote history version

{ "Id": "BFC0AC51-4530-4DB3-A4F3-4D8F1003074F", "Request": "QuoteHistoryVersion" }

Example: Get quote history supported symbols

{ "Id": "5F1E34B9-A435-4E3A-9851-EAD8E1483406", "Request": "QuoteHistorySymbols" }

Example: Get quote history supported periodicities

{ "Id": "5F1E34B9-A435-4E3A-9851-EAD8E1483406", "Request": "QuoteHistoryPeriodicities", "Params": { "Symbol": "EURUSD" } }

Example: Get quote history bars meta information

{ "Id": "5F1E34B9-A435-4E3A-9851-EAD8E1483406", "Request": "QuoteHistoryBarsInfo", "Params": { "Symbol": "EURUSD", "Periodicity": "M1", "PriceType": "bid" } }

Example: Get quote history bars

{ "Id": "5F1E34B9-A435-4E3A-9851-EAD8E1483406", "Request": "QuoteHistoryBars", "Params": { "Symbol": "EURUSD", "Periodicity": "M1", "PriceType": "bid", "Timestamp": 1444214766990, "Count": 10 } }

Interest Rate History

Access to the interest rate history in Trading Platform.

Interest rate history request

Interest rate history request should be a valid JSON message with the following fields:

{
    "Id": <some unique Id>,
    "Request": "InterestRateHistory",
    "Params": {
    "Currency": <currency>,
    "TimestampFrom": <from timestamp (optional, milliseconds)>,
    "TimestampTo": <to timestamp (optional, milliseconds)>,
    "RequestDirection": <direction "Forward" or "Backward" (optional, default is "Forward")>,
    "RequestPageSize": <page size (optional, default is 100)>,
    "RequestLastId": <last record Id in previous request (optional)>
    }
}

Example: Get interest rate history

{ "Id": "5F1E34B9-A435-4E3A-9851-EAD8E1483406", "Request": "InterestRateHistory", "Params": { "Currencies": ["USD","EUR"], "TimestampTo": 1716975802350, "RequestPageSize": 10 } }

Notifications

Notification: Feed tick update

After subscription to some symbol in Trading Platform you will recieve the following notifications with a new feed tick value. Count of 'Bids' and 'Asks' collections are similar to the subscription book depth.

{
  "Response": "FeedTick",
  "Result": {
    "Symbol": "EURUSD",
    "Timestamp": 1443789756132,
    "BestBid": {
      "Type": "Bid",
      "Price": 1.12906,
      "Volume": 550000
    },
    "BestAsk": {
      "Type": "Ask",
      "Price": 1.12908,
      "Volume": 2000000
    },
    "Bids": [{
      "Type": "Bid",
      "Price": 1.12906,
      "Volume": 550000
    }, {
      "Type": "Bid",
      "Price": 1.12905,
      "Volume": 1500000
    }, {
      "Type": "Bid",
      "Price": 1.12904,
      "Volume": 6000000
    }],
    "Asks": [{
     "Type": "Ask",
     "Price": 1.12908,
     "Volume": 2000000
    }, {
     "Type": "Ask",
     "Price": 1.12909,
     "Volume": 1500000
    }, {
     "Type": "Ask",
     "Price": 1.1291,
     "Volume": 1000000
    }]
  }
}
              

Notification: Bar update

After subscription to some bar (symbol, periodicity and price type are required) in Trading Platform you will recieve the following notifications with a bar updates and closed bars.

{
    "Result":
    {
        "Updates":
        [{
            "Low": 1.13788,
            "High": 1.13798,
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    "SymbolAlias": "EURUSD"
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}