Android™

Binary.com Tick Stream

See more WebSocket Examples

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

// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    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) {
        Log.i(TAG, ws.lastErrorText());
        Log.i(TAG, responseBody);
        Log.i(TAG, 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) {
        Log.i(TAG, 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) {
            Log.i(TAG, "Failed to receive a frame");
            Log.i(TAG, "ReadFrame fail reason = " + String.valueOf(ws.get_ReadFrameFailReason()));
            Log.i(TAG, 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);
            Log.i(TAG, jsonTickData.emit());

            numTicksReceived = numTicksReceived + 1;
            }

        }

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

    //  Read the Close response.
    success = ws.ReadFrame();
    if (success != true) {
        Log.i(TAG, "ReadFrame fail reason = " + String.valueOf(ws.get_ReadFrameFailReason()));
        Log.i(TAG, ws.lastErrorText());
        return;
        }

    Log.i(TAG, "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.

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}