Perl

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.

Perl

use chilkat();

$success = 0;

# 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

$jsonToken = chilkat::CkJsonObject->new();
$success = $jsonToken->LoadFile("qa_data/tokens/_salesforce.json");
if ($success != 1) {
    print "Failed to load _salesforce.json" . "\r\n";
    exit;
}

# 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"
# }

$oauth2 = chilkat::CkOAuth2->new();

$oauth2->put_TokenEndpoint("https://login.salesforce.com/services/oauth2/token");

# Replace this with your actual client ID (Consumer Key)
$oauth2->put_ClientId("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("refresh_token"));

# Send the HTTP POST to refresh the access token..
$success = $oauth2->RefreshAccessToken();
if ($success != 1) {
    print $oauth2->lastErrorText() . "\r\n";
    exit;
}

# 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.
$jsonToken->UpdateString("access_token",$oauth2->accessToken());

# Save the new JSON access token response to a file.
$sbJson = chilkat::CkStringBuilder->new();
$jsonToken->put_EmitCompact(0);
$jsonToken->EmitSb($sbJson);
$sbJson->WriteFile("qa_data/tokens/_salesforce.json","utf-8",0);

print "OAuth2 authorization granted!" . "\r\n";
print "New Access Token = " . $oauth2->accessToken() . "\r\n";

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