(Unicode C) Binary.com Tick Stream

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

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#include <C_CkWebSocketW.h>
#include <C_CkRestW.h>
#include <C_CkJsonObjectW.h>

void ChilkatSample(void)
    {
    HCkWebSocketW ws;
    HCkRestW rest;
    BOOL success;
    const wchar_t *responseBody;
    HCkJsonObjectW json;
    BOOL finalFrame;
    HCkJsonObjectW jsonTickData;
    BOOL receivedFinalFrame;
    int numTicksReceived;
    const wchar_t *receivedJson;

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

    ws = CkWebSocketW_Create();

    //  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 = CkRestW_Create();

    //  Connect to ws.binaryws.com
    success = CkRestW_Connect(rest,L"ws.binaryws.com",443,TRUE,FALSE);
    CkWebSocketW_UseConnection(ws,rest);
    CkWebSocketW_AddClientHeaders(ws);

    //  My app_id is 12332.  You'll wnat to use your own...
    responseBody = CkRestW_fullRequestNoBody(rest,L"GET",L"/websockets/v3?app_id=12332");
    success = CkWebSocketW_ValidateServerHandshake(ws);
    if (success != TRUE) {
        wprintf(L"%s\n",CkWebSocketW_lastErrorText(ws));
        wprintf(L"%s\n",responseBody);
        wprintf(L"%s\n",CkRestW_responseHeader(rest));
        CkWebSocketW_Dispose(ws);
        CkRestW_Dispose(rest);
        return;
    }

    //  Build and send the following message:

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

    json = CkJsonObjectW_Create();
    CkJsonObjectW_AppendString(json,L"ticks",L"R_50");
    CkJsonObjectW_AppendInt(json,L"subscribe",1);

    //  Send a full message in a single frame
    finalFrame = TRUE;
    success = CkWebSocketW_SendFrame(ws,CkJsonObjectW_emit(json),finalFrame);
    if (success != TRUE) {
        wprintf(L"%s\n",CkWebSocketW_lastErrorText(ws));
        CkWebSocketW_Dispose(ws);
        CkRestW_Dispose(rest);
        CkJsonObjectW_Dispose(json);
        return;
    }

    jsonTickData = CkJsonObjectW_Create();
    CkJsonObjectW_putEmitCompact(jsonTickData,FALSE);

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

        success = CkWebSocketW_ReadFrame(ws);
        if (success != TRUE) {
            wprintf(L"Failed to receive a frame\n");
            wprintf(L"ReadFrame fail reason = %d\n",CkWebSocketW_getReadFrameFailReason(ws));
            wprintf(L"%s\n",CkWebSocketW_lastErrorText(ws));
            CkWebSocketW_Dispose(ws);
            CkRestW_Dispose(rest);
            CkJsonObjectW_Dispose(json);
            CkJsonObjectW_Dispose(jsonTickData);
            return;
        }

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

            CkJsonObjectW_Load(jsonTickData,receivedJson);
            wprintf(L"%s\n",CkJsonObjectW_emit(jsonTickData));

            numTicksReceived = numTicksReceived + 1;
        }

    }

    //  Close the websocket connection.
    success = CkWebSocketW_SendClose(ws,TRUE,1000,L"Closing this websocket.");
    if (success != TRUE) {
        wprintf(L"%s\n",CkWebSocketW_lastErrorText(ws));
        CkWebSocketW_Dispose(ws);
        CkRestW_Dispose(rest);
        CkJsonObjectW_Dispose(json);
        CkJsonObjectW_Dispose(jsonTickData);
        return;
    }

    //  Read the Close response.
    success = CkWebSocketW_ReadFrame(ws);
    if (success != TRUE) {
        wprintf(L"ReadFrame fail reason = %d\n",CkWebSocketW_getReadFrameFailReason(ws));
        wprintf(L"%s\n",CkWebSocketW_lastErrorText(ws));
        CkWebSocketW_Dispose(ws);
        CkRestW_Dispose(rest);
        CkJsonObjectW_Dispose(json);
        CkJsonObjectW_Dispose(jsonTickData);
        return;
    }

    wprintf(L"Success.\n");

    //  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.


    CkWebSocketW_Dispose(ws);
    CkRestW_Dispose(rest);
    CkJsonObjectW_Dispose(json);
    CkJsonObjectW_Dispose(jsonTickData);

    }