C++

MercadoLibre Refresh OAuth2 Access Token

See more MercadoLibre Examples

Demonstrates how to refresh a MercadoLibre OAuth2 access token. The refresh does not require user interaction via a web browser. If an access token expires (typically with a 401 response code), a new access token can be automatically obtained by using the code in this example. C++

#include <CkJsonObject.h>
#include <CkOAuth2.h>
#include <CkStringBuilder.h>

void ChilkatSample(void)
    {
    bool success = false;

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

    //  It is assumed we previously obtained an OAuth2 access token.
    //  This example loads the JSON access token file 
    //  saved by this example: Get MercadoLibre OAuth2 Access Token

    CkJsonObject jsonToken;
    success = jsonToken.LoadFile("qa_data/tokens/mercadolibre.json");
    if (success != true) {
        std::cout << "Failed to load mercadolibre.json" << "\r\n";
        return;
    }

    //  The access token JSON looks like this:

    //  {
    //    "access_token": "APP_USR-8133606632685744-060115-93e1fd8b5e767c51c238df347bd0b288-577628017",
    //    "token_type": "bearer",
    //    "expires_in": 21600,
    //    "scope": "offline_access read write",
    //    "user_id": 577625107,
    //    "refresh_token": "TG-5ad522a286f1200006ac4ed1-577625007"
    //  }

    CkOAuth2 oauth2;

    oauth2.put_TokenEndpoint("https://api.mercadolibre.com/oauth/token");

    //  Replace these with actual values.
    oauth2.put_ClientId("MY_MERCADOLIBRE_APP_ID");
    oauth2.put_ClientSecret("MY_MERCADOLIBRE_APP_SECRET");

    //  Get the "refresh_token"
    oauth2.put_RefreshToken(jsonToken.stringOf("refresh_token"));

    //  Send the HTTP POST to refresh the access token..
    success = oauth2.RefreshAccessToken();
    if (success != true) {
        std::cout << oauth2.lastErrorText() << "\r\n";
        return;
    }

    std::cout << "New access token: " << oauth2.accessToken() << "\r\n";
    std::cout << "New refresh token: " << oauth2.refreshToken() << "\r\n";

    //  Update the JSON with the new tokens.
    jsonToken.UpdateString("access_token",oauth2.accessToken());
    jsonToken.UpdateString("refresh_token",oauth2.refreshToken());

    //  Save the new JSON access token response to a file.
    CkStringBuilder sbJson;
    jsonToken.put_EmitCompact(false);
    jsonToken.EmitSb(sbJson);
    sbJson.WriteFile("qa_data/tokens/mercadolibre.json","utf-8",false);

    std::cout << "OAuth2 authorization granted!" << "\r\n";
    std::cout << "New Access Token = " << oauth2.accessToken() << "\r\n";
    }