Java

Binary.com Tick Stream

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Tick Stream Request -- Initiate a continuous stream of spot price updates for a given symbol. Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkWebSocket ws = new CkWebSocket();

    // For brevity, this example does not check for errors when etablishing the WebSocket connection.
    // See Establish WebSocket Connection for more complete sample code for making the connection.

    CkRest rest = new CkRest();

    // Connect to ws.binaryws.com
    success = rest.Connect("ws.binaryws.com",443,true,false);
    ws.UseConnection(rest);
    ws.AddClientHeaders();

    // My app_id is 12332.  You'll wnat to use your own...
    String responseBody = rest.fullRequestNoBody("GET","/websockets/v3?app_id=12332");
    success = ws.ValidateServerHandshake();
    if (success != true) {
        System.out.println(ws.lastErrorText());
        System.out.println(responseBody);
        System.out.println(rest.responseHeader());
        return;
        }

    // Build and send the following message:

    // {
    //   "ticks": "R_50",
    //   "subscribe": 1
    // }

    CkJsonObject json = new CkJsonObject();
    json.AppendString("ticks","R_50");
    json.AppendInt("subscribe",1);

    // Send a full message in a single frame
    boolean finalFrame = true;
    success = ws.SendFrame(json.emit(),finalFrame);
    if (success != true) {
        System.out.println(ws.lastErrorText());
        return;
        }

    CkJsonObject jsonTickData = new CkJsonObject();
    jsonTickData.put_EmitCompact(false);

    // Begin reading the tick stream response.
    // We'll just read the 1st 10 updates and then exit..
    boolean receivedFinalFrame = false;
    int numTicksReceived = 0;
    while (numTicksReceived < 5) {

        success = ws.ReadFrame();
        if (success != true) {
            System.out.println("Failed to receive a frame");
            System.out.println("ReadFrame fail reason = " + ws.get_ReadFrameFailReason());
            System.out.println(ws.lastErrorText());
            return;
            }

        // The responses we desire are in Text frames, where the opcode = 1.
        if (ws.get_FrameOpcodeInt() == 1) {
            String receivedJson = ws.getFrameData();

            jsonTickData.Load(receivedJson);
            System.out.println(jsonTickData.emit());

            numTicksReceived = numTicksReceived+1;
            }

        }

    // Close the websocket connection.
    success = ws.SendClose(true,1000,"Closing this websocket.");
    if (success != true) {
        System.out.println(ws.lastErrorText());
        return;
        }

    // Read the Close response.
    success = ws.ReadFrame();
    if (success != true) {
        System.out.println("ReadFrame fail reason = " + ws.get_ReadFrameFailReason());
        System.out.println(ws.lastErrorText());
        return;
        }

    System.out.println("Success.");

    // The output of the above code is shown here:

    // {
    //   "echo_req": {
    //     "subscribe": 1,
    //     "ticks": "R_50"
    //   },
    //   "msg_type": "tick",
    //   "tick": {
    //     "ask": "373.8725",
    //     "bid": "373.8325",
    //     "epoch": "1517437456",
    //     "id": "2d3dedf1-45e2-66a5-d0d3-72bd7f0a6ea9",
    //     "quote": "373.8525",
    //     "symbol": "R_50"
    //   }
    // }
    // 
    // {
    //   "echo_req": {
    //     "subscribe": 1,
    //     "ticks": "R_50"
    //   },
    //   "msg_type": "tick",
    //   "tick": {
    //     "ask": "373.7952",
    //     "bid": "373.7552",
    //     "epoch": "1517437458",
    //     "id": "2d3dedf1-45e2-66a5-d0d3-72bd7f0a6ea9",
    //     "quote": "373.7752",
    //     "symbol": "R_50"
    //   }
    // }
    // 
    // {
    //   "echo_req": {
    //     "subscribe": 1,
    //     "ticks": "R_50"
    //   },
    //   "msg_type": "tick",
    //   "tick": {
    //     "ask": "373.8638",
    //     "bid": "373.8238",
    //     "epoch": "1517437460",
    //     "id": "2d3dedf1-45e2-66a5-d0d3-72bd7f0a6ea9",
    //     "quote": "373.8438",
    //     "symbol": "R_50"
    //   }
    // }
    // 
    // {
    //   "echo_req": {
    //     "subscribe": 1,
    //     "ticks": "R_50"
    //   },
    //   "msg_type": "tick",
    //   "tick": {
    //     "ask": "373.7636",
    //     "bid": "373.7236",
    //     "epoch": "1517437462",
    //     "id": "2d3dedf1-45e2-66a5-d0d3-72bd7f0a6ea9",
    //     "quote": "373.7436",
    //     "symbol": "R_50"
    //   }
    // }
    // 
    // {
    //   "echo_req": {
    //     "subscribe": 1,
    //     "ticks": "R_50"
    //   },
    //   "msg_type": "tick",
    //   "tick": {
    //     "ask": "373.6870",
    //     "bid": "373.6470",
    //     "epoch": "1517437464",
    //     "id": "2d3dedf1-45e2-66a5-d0d3-72bd7f0a6ea9",
    //     "quote": "373.6670",
    //     "symbol": "R_50"
    //   }
    // }
    // 
    // Success.
  }
}