(C) WhatsApp Cloud API Send Message

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Demonstrates how to send a message using the WhatsApp Cloud API (Business App)

Chilkat C/C++ Library Downloads
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#include <C_CkHttp.h>
#include <C_CkJsonObject.h>
#include <C_CkHttpResponse.h>

void ChilkatSample(void)
    {
    HCkHttp http;
    BOOL success;
    HCkJsonObject json;
    HCkHttpResponse resp;

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

    http = CkHttp_Create();

    // The following JSON is sent in the request body.

    // {
    //   "messaging_product": "whatsapp",
    //   "to": "16302581871",
    //   "type": "template",
    //   "template": {
    //     "name": "hello_world",
    //     "language": {
    //       "code": "en_US"
    //     }
    //   }
    // }

    json = CkJsonObject_Create();
    CkJsonObject_UpdateString(json,"messaging_product","whatsapp");
    CkJsonObject_UpdateString(json,"to","15555555555");
    CkJsonObject_UpdateString(json,"type","template");
    CkJsonObject_UpdateString(json,"template.name","hello_world");
    CkJsonObject_UpdateString(json,"template.language.code","en_US");

    CkHttp_putAuthToken(http,"EAANrS5....yFB9Ma");
    CkHttp_SetRequestHeader(http,"Content-Type","application/json");

    resp = CkHttp_PostJson3(http,"https://graph.facebook.com/v18.0/111111111111111/messages","application/json",json);
    if (CkHttp_getLastMethodSuccess(http) == FALSE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        CkJsonObject_Dispose(json);
        return;
    }

    printf("%d\n",CkHttpResponse_getStatusCode(resp));
    printf("%s\n",CkHttpResponse_bodyStr(resp));
    CkHttpResponse_Dispose(resp);

    // Here's a screenshot of our WhatsApp test app.

    // 


    CkHttp_Dispose(http);
    CkJsonObject_Dispose(json);

    }