Go

Binary.com Tick Stream

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

    success := false

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

    ws := chilkat.NewWebSocket()

    // 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.

    rest := chilkat.NewRest()

    // 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...
    responseBody := rest.FullRequestNoBody("GET","/websockets/v3?app_id=12332")
    success = ws.ValidateServerHandshake()
    if success != true {
        fmt.Println(ws.LastErrorText())
        fmt.Println(*responseBody)
        fmt.Println(rest.ResponseHeader())
        ws.DisposeWebSocket()
        rest.DisposeRest()
        return
    }

    // Build and send the following message:

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

    json := chilkat.NewJsonObject()
    json.AppendString("ticks","R_50")
    json.AppendInt("subscribe",1)

    // Send a full message in a single frame
    finalFrame := true
    success = ws.SendFrame(*json.Emit(),finalFrame)
    if success != true {
        fmt.Println(ws.LastErrorText())
        ws.DisposeWebSocket()
        rest.DisposeRest()
        json.DisposeJsonObject()
        return
    }

    jsonTickData := chilkat.NewJsonObject()
    jsonTickData.SetEmitCompact(false)

    // Begin reading the tick stream response.
    // We'll just read the 1st 10 updates and then exit..
    receivedFinalFrame := false
    numTicksReceived := 0
    for numTicksReceived < 5 {

        success = ws.ReadFrame()
        if success != true {
            fmt.Println("Failed to receive a frame")
            fmt.Println("ReadFrame fail reason = ", ws.ReadFrameFailReason())
            fmt.Println(ws.LastErrorText())
            ws.DisposeWebSocket()
            rest.DisposeRest()
            json.DisposeJsonObject()
            jsonTickData.DisposeJsonObject()
            return
        }

        // The responses we desire are in Text frames, where the opcode = 1.
        if ws.FrameOpcodeInt() == 1 {
            receivedJson := ws.GetFrameData()

            jsonTickData.Load(*receivedJson)
            fmt.Println(*jsonTickData.Emit())

            numTicksReceived = numTicksReceived + 1
        }

    }

    // Close the websocket connection.
    success = ws.SendClose(true,1000,"Closing this websocket.")
    if success != true {
        fmt.Println(ws.LastErrorText())
        ws.DisposeWebSocket()
        rest.DisposeRest()
        json.DisposeJsonObject()
        jsonTickData.DisposeJsonObject()
        return
    }

    // Read the Close response.
    success = ws.ReadFrame()
    if success != true {
        fmt.Println("ReadFrame fail reason = ", ws.ReadFrameFailReason())
        fmt.Println(ws.LastErrorText())
        ws.DisposeWebSocket()
        rest.DisposeRest()
        json.DisposeJsonObject()
        jsonTickData.DisposeJsonObject()
        return
    }

    fmt.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.

    ws.DisposeWebSocket()
    rest.DisposeRest()
    json.DisposeJsonObject()
    jsonTickData.DisposeJsonObject()