(Unicode C++) Twilio Send SMS (using Chilkat HTTP)

Send an outgoing SMS message.

For more information, see https://www.twilio.com/docs/sms/api/message-resource#create-a-message-resource

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

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

    CkHttpW http;
    bool success;

    // Implements the following CURL command:

    // (See information about using test credentials and phone numbers:  https://www.twilio.com/docs/iam/test-credentials)

    // curl -X POST https://api.twilio.com/2010-04-01/Accounts/TWILIO_ACCOUNT_SID/Messages.json \
    // --data-urlencode "From=+15005550006" \
    // --data-urlencode "Body=body" \
    // --data-urlencode "To=+15005551212" \
    // -u TWILIO_ACCOUNT_SID:TWILIO_AUTH_TOKEN

    // Use the following online tool to generate HTTP code from a CURL command
    // Convert a cURL Command to HTTP Source Code

    http.put_Login(L"TWILIO_ACCOUNT_SID");
    http.put_Password(L"TWILIO_AUTH_TOKEN");

    CkHttpRequestW req;
    req.put_HttpVerb(L"POST");
    req.put_Path(L"/2010-04-01/Accounts/TWILIO_ACCOUNT_SID/Messages.json");
    req.put_ContentType(L"application/x-www-form-urlencoded");
    req.AddParam(L"From",L"+15005550006");
    req.AddParam(L"Body",L"body");
    req.AddParam(L"To",L"+15005551212");

    CkHttpResponseW *resp = http.PostUrlEncoded(L"https://api.twilio.com/2010-04-01/Accounts/TWILIO_ACCOUNT_SID/Messages.json",req);
    if (http.get_LastMethodSuccess() == false) {
        wprintf(L"%s\n",http.lastErrorText());
        return;
    }

    CkStringBuilderW sbResponseBody;
    resp->GetBodySb(sbResponseBody);
    CkJsonObjectW jResp;
    jResp.LoadSb(sbResponseBody);
    jResp.put_EmitCompact(false);

    wprintf(L"Response Body:\n");
    wprintf(L"%s\n",jResp.emit());

    // A 201 status code indicates success.
    int respStatusCode = resp->get_StatusCode();
    wprintf(L"Response Status Code = %d\n",respStatusCode);
    if (respStatusCode >= 400) {
        wprintf(L"Response Header:\n");
        wprintf(L"%s\n",resp->header());
        wprintf(L"Failed.\n");
        delete resp;
        return;
    }

    delete resp;

    // Sample JSON response:
    // (Sample code for parsing the JSON response is shown below)

    // {
    //   "account_sid": "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
    //   "api_version": "2010-04-01",
    //   "body": "body",
    //   "date_created": "Thu, 30 Jul 2015 20:12:31 +0000",
    //   "date_sent": "Thu, 30 Jul 2015 20:12:33 +0000",
    //   "date_updated": "Thu, 30 Jul 2015 20:12:33 +0000",
    //   "direction": "outbound-api",
    //   "error_code": null,
    //   "error_message": null,
    //   "from": "+15017122661",
    //   "messaging_service_sid": "MGXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
    //   "num_media": "0",
    //   "num_segments": "1",
    //   "price": null,
    //   "price_unit": null,
    //   "sid": "MMXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
    //   "status": "sent",
    //   "subresource_uris": {
    //     "media": "/2010-04-01/Accounts/ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/Messages/SMXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/Media.json"
    //   },
    //   "to": "+15558675310",
    //   "uri": "/2010-04-01/Accounts/ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/Messages/SMXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.json"
    // }

    // Sample code for parsing the JSON response...
    // Use the following online tool to generate parsing code from sample JSON:
    // Generate Parsing Code from JSON

    // Chilkat functions returning "const char *" return a pointer to temporary internal memory owned and managed by Chilkat.
    // See this example explaining how this memory should be used: const char * functions.

    const wchar_t *account_sid = jResp.stringOf(L"account_sid");
    const wchar_t *api_version = jResp.stringOf(L"api_version");
    const wchar_t *body = jResp.stringOf(L"body");
    const wchar_t *date_created = jResp.stringOf(L"date_created");
    const wchar_t *date_sent = jResp.stringOf(L"date_sent");
    const wchar_t *date_updated = jResp.stringOf(L"date_updated");
    const wchar_t *direction = jResp.stringOf(L"direction");
    const wchar_t *error_code = jResp.stringOf(L"error_code");
    const wchar_t *error_message = jResp.stringOf(L"error_message");
    const wchar_t *from = jResp.stringOf(L"from");
    const wchar_t *messaging_service_sid = jResp.stringOf(L"messaging_service_sid");
    const wchar_t *num_media = jResp.stringOf(L"num_media");
    const wchar_t *num_segments = jResp.stringOf(L"num_segments");
    const wchar_t *price = jResp.stringOf(L"price");
    const wchar_t *price_unit = jResp.stringOf(L"price_unit");
    const wchar_t *sid = jResp.stringOf(L"sid");
    const wchar_t *status = jResp.stringOf(L"status");
    const wchar_t *subresource_urisMedia = jResp.stringOf(L"subresource_uris.media");
    const wchar_t *v_to = jResp.stringOf(L"to");
    const wchar_t *uri = jResp.stringOf(L"uri");
    }