SDK for Unity / Authentication via custom ID
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SDK for Unity

Authentication via custom ID

You can authenticate users on the Xsolla side via a custom ID (a user ID generated on your server).

This authentication option allows to:

To authenticate a user via a custom ID, you will need to implement the Auth by custom ID API call in the back end of your application. The call returns a user JSON Web Token (JWT), that you can use as an authorization token in the SDK methods for making a payment and managing inventory.

Note
A new account is created automatically on the Xsolla side when a user completes authentication with their ID for the first time.

To end an active user session, use the OAuthLogout SDK method.

How-tos

Learn about advanced setups from our how-tos.

How to use your own authorization system

You can integrate the SDK with your own authorization system. To do this, implement user identification by custom ID (user ID generated on your server) to open an in-game store, make a payment, and manage inventory.

The flow of interaction with Xsolla servers when using your own authorization system:

  1. Your client sends an authentication request to your server.
  2. Your server authorizes the user and sends a request to the Xsolla server to receive the user JSON Web Token (JWT), passing in the custom ID.
  3. Xsolla server returns the user JWT.
  4. Your server passes the user JWT to the client.
  5. SDK methods use the received user JWT instead of authorization token to open an in-game store, make a payment, and manage inventory.

To use your own authorization system with Xsolla products:

  1. Set up server OAuth 2.0 client in your Publisher Account.
  2. Implement getting the server JWT.
  3. Implement getting the user JWT.
  4. Implement the logic of working with the in-game store, purchases, and inventory using the user JWT.

Note
If you use the PlayFab or Firebase authorization system, get the user JWT using Xsolla ready-made extensions for BaaS.

Set up server OAuth 2.0 client

  1. Open your project in Publisher Account and go to the Login section.
  2. Click Configure in the pane of a Login project.
  3. Go to the Security block and select the OAuth 2.0 section.
  4. Click Add OAuth 2.0.
  5. Specify OAuth 2.0 redirect URIs.
  6. Check the Server (server-to-server connection) box.
  7. Click Connect.
  8. Copy and save the client ID and secret key.

Get server JWT

On the back end of your application, implement a method to get the server JWT using the Generate JWT API call. The request must contain the following parameters:

Note
The server JWT lifetime is 59 minutes.

Get user JWT

On the back end of your application, implement a method to get the user JWT using the Auth by custom ID API call. The request must contain the X-Server-Authorization: <server_JWT> header, where <server_JWT> is the server JWT obtained in the previous step.

Note
The user JWT lifetime is 24 hours. To change it, contact your Account Manager or email integration@xsolla.com.

Use user JWT

Use the SDK methods to open the in-game store, make a payment, and manage inventory. While using the SDK methods, pass the user JWT to the Token.Instance property.

The following tutorials contain examples of using the token:

Implement the logic of receiving a new user JWT after its expiration. It is recommended that you get a new token in background mode so the user doesn’t have to log in to the application again.

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Last updated: October 10, 2023

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