Unicode C++

Salesforce OAuth2 Refresh Access Token

See more OAuth2 Examples

Demonstrates how to refresh a Salesforce Access Token.

Note: Use Chilkat v10.1.2 or later for this example.

Unicode C++

#include <CkJsonObjectW.h>
#include <CkOAuth2W.h>
#include <CkStringBuilderW.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 SalesForce OAuth2 Access Token via Authorization Flow

    CkJsonObjectW jsonToken;
    success = jsonToken.LoadFile(L"qa_data/tokens/_salesforce.json");
    if (success != true) {
        wprintf(L"Failed to load _salesforce.json\n");
        return;
    }

    // This is an example of a Salesforce OAuth2 access token to be refreshed:

    // {
    //   "access_token": "00D41000....uLZBpT6",
    //   "refresh_token": "5Aep....25xdGgkrV",
    //   "signature": "cjTbSc5DvcKpaMoRTzuQTJLb1tcMw8LEO01flq4aMD4=",
    //   "scope": "refresh_token id",
    //   "instance_url": "https://d41000000f8a0eak-dev-ed.my.salesforce.com",
    //   "id": "https://login.salesforce.com/id/00D41000000F8A0EAK/005410000....xAAE",
    //   "token_type": "Bearer",
    //   "issued_at": "1738348388166"
    // }

    CkOAuth2W oauth2;

    oauth2.put_TokenEndpoint(L"https://login.salesforce.com/services/oauth2/token");

    // Replace this with your actual client ID (Consumer Key)
    oauth2.put_ClientId(L"CLIENT_ID");

    // Note: The client secret is not required because we configured our Connected App
    // to not require it for the refresh flow.  See the screenshot below.

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

    // Send the HTTP POST to refresh the access token..
    success = oauth2.RefreshAccessToken();
    if (success != true) {
        wprintf(L"%s\n",oauth2.lastErrorText());
        return;
    }

    // The response contains a new access token, but we must keep
    // our existing refresh token for when we need to refresh again in the future.
    jsonToken.UpdateString(L"access_token",oauth2.accessToken());

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

    wprintf(L"OAuth2 authorization granted!\n");
    wprintf(L"New Access Token = %s\n",oauth2.accessToken());

    // --------------------------------------------------------------------------
    // Here's a screenshot of a Salesforce Connected App 
    // which does not requires the secret for the authorization or refresh flow.
    // 
    }