(C) Duplicate curl -u user:password with Chilkat HTTP

Demonstrates how to duplicate a curl command that uses the -u username:password option. (This assumes HTTP Basic Authentication, and Chilkat requires Basic authentication to be over a TLS connection.)

Duplicates the following curl command:

curl https://api.sandbox.paypal.com/v1/oauth2/token \
  -H "Accept: application/json" \
  -H "Accept-Language: en_US" \
  -u "Client-Id:Secret" \
  -d "grant_type=client_credentials"

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#include <C_CkHttp.h>
#include <C_CkHttpRequest.h>
#include <C_CkHttpResponse.h>

void ChilkatSample(void)
    {
    HCkHttp http;
    HCkHttpRequest req;
    HCkHttpResponse resp;

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

    http = CkHttp_Create();
    req = CkHttpRequest_Create();

    //  The AddHeader method corresponds to the curl "-H" argument.
    CkHttpRequest_AddHeader(req,"Accept","application/json");
    CkHttpRequest_AddHeader(req,"Accept-Language","en_US");

    //  The curl "-d" argument specifies the HTTP request body.  In this case,
    //  we're sending an application/x-www-form-urlencoded request, and therefore
    //  the body contains the URL-encoded query parameters.
    CkHttpRequest_AddParam(req,"grant_type","client_credentials");

    CkHttp_putLogin(http,"PAYPAL_REST_API_CLIENT_ID");
    CkHttp_putPassword(http,"PAYPAL_REST_API_SECRET");

    //  Sends a POST request where the Content-Type is application/x-www-form-urlencoded
    resp = CkHttp_PostUrlEncoded(http,"https://api.sandbox.paypal.com/v1/oauth2/token",req);
    if (CkHttp_getLastMethodSuccess(http) != TRUE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        CkHttpRequest_Dispose(req);
        return;
    }

    if (CkHttpResponse_getStatusCode(resp) != 200) {
        printf("Error status code: %d\n",CkHttpResponse_getStatusCode(resp));
        printf("%s\n",CkHttpResponse_bodyStr(resp));
        CkHttpResponse_Dispose(resp);
        CkHttp_Dispose(http);
        CkHttpRequest_Dispose(req);
        return;
    }

    //  The JSON response is in the resp BodyStr property
    printf("%s\n",CkHttpResponse_bodyStr(resp));
    printf("-- Success.\n");

    CkHttpResponse_Dispose(resp);


    CkHttp_Dispose(http);
    CkHttpRequest_Dispose(req);

    }