(Swift) Binary.com Tick Stream

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

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

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

    let ws = CkoWebSocket()

    //  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.

    let rest = CkoRest()

    //  Connect to ws.binaryws.com
    var success: Bool = rest.Connect("ws.binaryws.com", port: 443, tls: true, autoReconnect: false)
    ws.UseConnection(rest)
    ws.AddClientHeaders()

    //  My app_id is 12332.  You'll wnat to use your own...
    var responseBody: String? = rest.FullRequestNoBody("GET", uriPath: "/websockets/v3?app_id=12332")
    success = ws.ValidateServerHandshake()
    if success != true {
        print("\(ws.LastErrorText)")
        print("\(responseBody!)")
        print("\(rest.ResponseHeader)")
        return
    }

    //  Build and send the following message:

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

    let json = CkoJsonObject()
    json.AppendString("ticks", value: "R_50")
    json.AppendInt("subscribe", value: 1)

    //  Send a full message in a single frame
    var finalFrame: Bool = true
    success = ws.SendFrame(json.Emit(), finalFrame: finalFrame)
    if success != true {
        print("\(ws.LastErrorText)")
        return
    }

    let jsonTickData = CkoJsonObject()
    jsonTickData.EmitCompact = false

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

        success = ws.ReadFrame()
        if success != true {
            print("Failed to receive a frame")
            print("ReadFrame fail reason = \(ws.ReadFrameFailReason.integerValue)")
            print("\(ws.LastErrorText)")
            return
        }

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

            jsonTickData.Load(receivedJson)
            print("\(jsonTickData.Emit())")

            numTicksReceived = numTicksReceived + 1
        }

    }

    //  Close the websocket connection.
    success = ws.SendClose(true, statusCode: 1000, reason: "Closing this websocket.")
    if success != true {
        print("\(ws.LastErrorText)")
        return
    }

    //  Read the Close response.
    success = ws.ReadFrame()
    if success != true {
        print("ReadFrame fail reason = \(ws.ReadFrameFailReason.integerValue)")
        print("\(ws.LastErrorText)")
        return
    }

    print("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.

}