Support Board
Date/Time: Tue, 21 Jan 2025 04:11:39 +0000
Post From: Trying to run JAVA demo program
| [2017-12-02 17:41:59] |
| User905938 - Posts: 10 |
|
I think I have made it to the null Terminator, but it takes 30 seconds - 2 min to receive a response from the SC DTC server; when I send a baddly formed message after the login request it returns instantaneously. Can you please help me understand what I am missing. I am using Json response and I have the SC DTC server operating I think correctly, log attached at bottom. Here is my sample socket code (package name removed), and I brought the messages into a String for simplicity. ===================================================================================================== Java Class ===================================================================================================== import java.io.*; import java.net.*; import java.util.Date; public class SierraChartSocketClient { public SierraChartSocketClient() { String testServerName = "127.0.0.1"; int port = 11099; try{ Socket socket = openSocket(testServerName, port); socket.setTcpNoDelay(true); String result = loginToSocketAndRequestData(socket); System.out.println(result); socket.close(); }catch(Exception e){ e.printStackTrace(); } } private String loginToSocketAndRequestData(Socket socket) throws Exception{ byte nullByte = 0x00; String loginRequestString = "{\"Type\":1,\"Integer_1\":1,\"HeartbeatIntervalInSeconds\":60\", \"ClientName\": \"Sample Application\"}"; String marketDataRequestCL = "{\"Type\":101,\"RequestAction\":\"SUBSCRIBE\",\"SymbolID\":1,\"Symbol\":\"CLF8\", \"Exchange\":\"NYMEX\"}"; String heartBeat = "{\"Type\":3,\"CurrentDateTime \":\"" + (int) (System.currentTimeMillis() / 1000L) + "\" "; try{ BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(socket.getInputStream())); BufferedOutputStream bufferedOutputStream = new BufferedOutputStream(socket.getOutputStream()); System.out.println("Sending Over Login Request: " + new Date(System.currentTimeMillis()).toString()); bufferedOutputStream.write(loginRequestString.getBytes()); bufferedOutputStream.write(nullByte); bufferedOutputStream.flush(); StringBuilder stringBuilder = new StringBuilder(); String str = bufferedReader.readLine(); System.out.println(str); System.out.println("Received Login Response: " + new Date(System.currentTimeMillis()).toString()); bufferedOutputStream.write(heartBeat.getBytes()); bufferedOutputStream.flush(); System.out.println("Sending Heartbeat: " + new Date(System.currentTimeMillis()).toString()); bufferedOutputStream.write(marketDataRequestCL.getBytes("ISO-8859-1")); bufferedOutputStream.write(nullByte); while((str = bufferedReader.readLine()) != null){ stringBuilder.append(str + "\n"); System.out.println(str); } return null; }catch (IOException e){ e.printStackTrace(); throw e; } } private Socket openSocket(String server, int port) throws Exception{ Socket socket; try{ InetAddress inteAddress = InetAddress.getByName(server); SocketAddress socketAddress = new InetSocketAddress(inteAddress, port); socket = new Socket(); int timeoutInMs = 45*1000; // 45 seconds socket.connect(socketAddress, timeoutInMs); return socket; }catch (SocketTimeoutException e){ System.err.println("Timed out waiting for the socket."); e.printStackTrace(); throw e; } } public static void main(String[] args){ new SierraChartSocketClient(); } } ===================================================================================================== Java Console Output ===================================================================================================== Sending Over Login Request: Sat Dec 02 10:38:07 MST 2017 {"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=rim","ReconnectAddress":"","ServerName":"SC DTC Server","SymbolExchangeDelimiter":""} {"Type":3,"NumDroppedMessages":0,"CurrentDateTime":0} {"Type":3,"NumDroppedMessages":0,"CurrentDateTime":0} {"Type":3,"NumDroppedMessages":0,"CurrentDateTime":0} Received Login Response: Sat Dec 02 10:40:47 MST 2017 Sending Heartbeat: Sat Dec 02 10:40:47 MST 2017 null Process finished with exit code 0 ===================================================================================================== Sierra Chart Log ===================================================================================================== Software version: 1656 | 2017-12-02 10:38:03 Enabled for: Advanced Features. | 2017-12-02 10:38:03 Enabled for: Sierra Chart Historical Data Service. | 2017-12-02 10:38:03 Allow Support for Sierra Chart Data Feeds is enabled. | 2017-12-02 10:38:03 Current selected Data/Trading service: CQG FIX Trading | 2017-12-02 10:38:03 Chart Update Interval: 500 | 2017-12-02 10:38:03 Data/Trade Service Settings automatically set. | 2017-12-02 10:38:03 Time Zone: -07:00:00 (MST-07MDT+01,M3.2.0/02:00,M11.1.0/02:00) | 2017-12-02 10:38:03 2017-12-02 10:38:03 Local computer time | 2017-12-02 10:38:03 2017-12-02 17:38:03 Local computer time in UTC | 2017-12-02 10:38:03 2017-12-02 10:38:03 Local computer time in SC Time Zone | 2017-12-02 10:38:03 2017-12-02 17:30:04 Server time in UTC | 2017-12-02 10:38:03 Local computer UTC time and Server UTC time difference: 6 seconds. | 2017-12-02 10:38:03 Program path: C:\SierraChart\ | 2017-12-02 10:38:03 Data Files path: C:\SierraChart\Data\ | 2017-12-02 10:38:03 OS Version Number: 6.1 | 2017-12-02 10:38:03 Locale Setting: C | 2017-12-02 10:38:03 DTC Protocol server | Incoming connection from 127.0.0.1. | 2017-12-02 10:38:07 DTCServer (929) | Creating socket. | 2017-12-02 10:38:07 DTC client #59. 127.0.0.1 | Requested heartbeat interval: 40 | 2017-12-02 10:38:07 DTC client #59. Sample Application. 127.0.0.1 | Received logon request. | 2017-12-02 10:38:07 DTC client #59. Sample Application. 127.0.0.1 | Sent successful Logon response message to client. Username: . Result text: Connected to SC DTC Protocol server. Service=rim | 2017-12-02 10:38:07 DTC client #59. Sample Application. 127.0.0.1 | No heartbeat received after 1m 20s. Closing network socket. | 2017-12-02 10:40:48 DTCServer (929) | Initiating close of socket by core. | 2017-12-02 10:40:48 DTCServer (929) | Shutdown started. Waiting for graceful close. | 2017-12-02 10:40:48 DTCServer (929) | Socket gracefully closed by remote side. | 2017-12-02 10:40:48 DTCServer (929) | Closed. | 2017-12-02 10:40:48 |