Online Licenses

The SDK provides support for online license activation, check, and deactivation. This flow requires internet access and communicates directly with the LicenseSpring API.

1

Initialize the License Handler

To begin working with an online license, you must initialize a LicenseHandler using your product and license credentials.

Without OAuth

	c := license_handler.LicenseHandlerConfig{
		ApiKey:      "your api key",
		SharedKey:   "your shared key",
		ProductCode: "your product code",
		AuthData:    auth.FromKey("your license key"),
		OAuth:       false,
	}

	lh, err := license_handler.NewLicenseHandler(c)

With OAuth

With Hardware Key

By default, this setup uses the SDK’s file-based storage, meaning license data is persisted to a local file. You can customize the storage method if needed, but all examples in this guide assume file storage.

2

Activate the License

Once the license handler is configured, activate the license:

	ctx := context.Background()
	var ld *types.LicenseData
	ld, err = lh.ActivateLicense(ctx)
	if err != nil {
		return err
	}

This will send an activation request to the LicenseSpring API. If successful, the SDK stores the license locally for future use.

3

Check the License

After activation, you can verify the license status at any time:

	ld, err = lh.CheckLicense(ctx)
	if err != nil {
		return err
	}

This communicates with the API to ensure the license is still valid and up-to-date.

4

Deactivate the License

To deactivate the license when no longer needed:

	removeLocalData := true
	ld, err = lh.DeactivateLicense(ctx, removeLocalData)
	if err != nil {
		return err
	}

Setting removeLocalData to true will delete the local license file. If set to false, the file remains and can be reused later.

5

Resume from Local License File

If your application restarts and you haven't removed the local license file, you can resume the license state from disk:

	ld, err = lh.GetCurrentLicense()
	if err != nil {
		return err
	}

• Online licenses require internet connectivity at the time of activation and checks.
• Local license data can be reused as long as it hasn’t been removed or expired.