(Unicode C++) VoiceBase -- Upload a media file for transcription and analysis

This example demonstrates how to upload a media file for transcription and analysis. It duplicates the following curl command:

curl https://apis.voicebase.com/v2-beta/media \
  --form media=@msg_123_abc.wav \
  --header "Authorization: Bearer ${TOKEN}"

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#include <CkHttpW.h>
#include <CkHttpRequestW.h>
#include <CkStringBuilderW.h>
#include <CkHttpResponseW.h>
#include <CkJsonObjectW.h>

void ChilkatSample(void)
    {
    // This example assumes the Chilkat HTTP API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // Insert your Bearer token here:
    const wchar_t *accessToken = L"VOICEBASE_TOKEN";

    CkHttpW http;

    CkHttpRequestW req;
    req.put_HttpVerb(L"POST");
    req.put_Path(L"/v2-beta/media");
    req.put_ContentType(L"multipart/form-data");

    // Add the access (bearer) token to the request, which is a header
    // having the following format:
    // Authorization: Bearer <userAccessToken>
    CkStringBuilderW sbAuth;
    sbAuth.Append(L"Bearer ");
    sbAuth.Append(accessToken);
    req.AddHeader(L"Authorization",sbAuth.getAsString());

    bool success = req.AddFileForUpload2(L"media",L"qa_data/wav/msg_123_abc.wav",L"audio/x-wav");
    if (success != true) {
        wprintf(L"%s\n",req.lastErrorText());
        return;
    }

    CkHttpResponseW *resp = http.SynchronousRequest(L"apis.voicebase.com",443,true,req);
    if (http.get_LastMethodSuccess() != true) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    // Examine the response status code and body.
    wprintf(L"Response status code = %d\n",resp->get_StatusCode());

    // The response should be JSON, even if an error.
    CkJsonObjectW json;
    json.Load(resp->bodyStr());
    json.put_EmitCompact(false);

    wprintf(L"%s\n",json.emit());

    // A successful response will have a status code = 200
    if (resp->get_StatusCode() != 200) {
        wprintf(L"Failed.\n");
    }
    else {
        wprintf(L"mediaId: %s\n",json.stringOf(L"mediaId"));
        wprintf(L"href: %s\n",json.stringOf(L"_links.self.href"));
        wprintf(L"status: %s\n",json.stringOf(L"status"));
        wprintf(L"Success.\n");
    }

    delete resp;

    // Here is an example of a successful response:

    // 	{ 
    // 	  "_links": { 
    // 	    "self": { 
    // 	      "href": "/v2-beta/media/856a1e85-c847-4c3c-b7a4-6cf15cd51db4"
    // 	    }
    // 	  },
    // 	  "mediaId": "856a1e85-c847-4c3c-b7a4-6cf15cd51db4",
    // 	  "status": "accepted",
    // 	  "metadata": {}
    // 	
    }