Support Board
Date/Time: Tue, 21 Jan 2025 00:47:17 +0000
Connect to SierraChart real time data from Java program
View Count: 836
| [2018-07-18 03:19:20] |
| Thomson - Posts: 3 |
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Hi, I am developing a Java program to collect the real time data from SierraChart. I am able to Logon and send/receive the heartbeat message to/from the server by using JSON continuously. However, when I send the Market Data Request, the server has no response and does not send the SNAPSHOT/Data data as expected. Below is the Server log: ========================================================================================================================== DTC Protocol server | Incoming connection from 127.0.0.1. | 2018-07-18 10:56:18 DTCServer (11) | Creating socket. | 2018-07-18 10:56:18 DTC client #1. 127.0.0.1 | Requested heartbeat interval: 40 | 2018-07-18 10:56:18 DTC client #1. Sample Application. 127.0.0.1 | Received logon request. | 2018-07-18 10:56:18 DTC client #1. Sample Application. 127.0.0.1 | Low bandwidth mode has been requested. | 2018-07-18 10:56:18 DTC client #1. Sample Application. 127.0.0.1 | Sent successful Logon response message to client. Username: . Result text: Connected to SC DTC Protocol server. Service=scdataallservices | 2018-07-18 10:56:18 ========================================================================================================================== Below is my Java Console Log: ========================================================================================================================== Sending: {"Type":1,"Integer_1":1,"HeartbeatIntervalInSeconds":60,"ClientName":"Sample Application"} TCPLink is running Sending: {"Type":101,"RequestAction":"SUBSCRIBE","SymbolID":1,"Symbol":"HSN18"} Sending: {"Type":3} Receiving:{"Type":2,"ProtocolVersion":8,"Result":1,"Integer_1":0,"MarketDepthUpdatesBestBidAndAsk":0,"TradingIsSupported":0,"OCOOrdersSupported":0,"OrderCancelReplaceSupported":0,"SecurityDefinitionsSupported":1,"HistoricalPriceDataSupported":0,"ResubscribeWhenMarketDataFeedAvailable":0,"MarketDepthIsSupported":1,"OneHistoricalPriceDataRequestPerConnection":0,"BracketOrdersSupported":0,"UseIntegerPriceOrderMessages":0,"UsesMultiplePositionsPerSymbolAndTradeAccount":0,"MarketDataSupported":1,"ResultText":"Connected to SC DTC Protocol server. Service=scdataallservices","ReconnectAddress":"","ServerName":"SC DTC Server","SymbolExchangeDelimiter":""} END Sending: {"Type":3} Receiving: {"Type":3,"NumDroppedMessages":0,"CurrentDateTime":1531882618} END Sending: {"Type":3} Receiving: {"Type":3,"NumDroppedMessages":0,"CurrentDateTime":1531882658} END ========================================================================================================================== However, when I changed the SymbolID in the request message to zero, the server can send the reject message back. If I changed an invalid Symbol (e.g. ABC), The server will not response anything again. Below is the Server log: ========================================================================================================================== Sending: {"Type":101,"RequestAction":"SUBSCRIBE","SymbolID":0,"Symbol":"HSN18"} Receiving: {"Type":103,"SymbolID":0,"RejectText":"Symbol ID is zero."} ========================================================================================================================== Is there anything in the SierraChart I need to set or subscribe further? Thank you in advance. |
| [2018-07-18 13:52:32] |
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This is wrong: ,"RequestAction":"SUBSCRIBE" In case of a constant you need use the numeric variable it is equal to. So in this case subscribe is 1. Sierra Chart Support - Engineering Level Your definitive source for support. Other responses are from users. Try to keep your questions brief and to the point. Be aware of support policy: https://www.sierrachart.com/index.php?l=PostingInformation.php#GeneralInformation For the most reliable, advanced, and zero cost futures order routing, *change* to the Teton service: Sierra Chart Teton Futures Order Routing |
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