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Using Redirects

Table of Contents

  1. Configuring Top-Level Redirects
  2. Listening for Redirect Responses

Configuring Top-Level Redirects

If you prefer top-level redirects instead of popups, you can pass an instance of RedirectRequestBehavior as a second parameter to either the HubApi initialization or to any API method:

const redirectBehavior = new HubApi.RedirectRequestBehavior();

// Pass the behavior as a second parameter to the HubApi
const hubApi = new HubApi(<url>, redirectBehavior);

// Or pass it as a second parameter to any API method
const result = hubApi.checkout(<requestOptions>, redirectBehavior);

Note: To use redirects instead of popups, your app must run under HTTPS!

Note: The way to configure top-level redirects will likely change in an upcoming version of the Hub API!

The RedirectRequestBehavior accepts two optional parameters:

The first is the return URL. If no return URL is specified, the current URL without parameters will be used.

const redirectBehavior = new RedirectRequestBehavior('https://url.to/return?to');

The second optional parameter is a plain object you can use to store data until the request returns:

const storedData = { foo: 'I am the state' };
const redirectBehavior = new RedirectRequestBehavior(null, storedData);

Listening for Redirect Responses

If you configured the HubApi to use top-level redirects instead of popups, you need to follow the four steps below to specifically listen for the redirects from the Hub back to your site, using the on() method.

Your handler functions will be called with two parameters: (1) the result object and (2) the stored data object as it was passed to the RedirectRequestBehavior during initialization.

// 1. Initialize an Hub client instance
const hubApi = new HubApi(/* ... */);

// 2. Define your handler functions
const onSuccess = function(result, storedData) {
    console.log("Got result from Hub:", result);
    console.log("Retrieved stored data:", storedData);
}

const onError = function(error, storedData) {
    console.log("Got error from Hub:", error);
    console.log("Retrieved stored data:", storedData);
}

// 3. Listen for the redirect responses you expect
hubApi.on(HubApi.RequestType.CHECKOUT, onSuccess, onError);
hubApi.on(HubApi.RequestType.SIGN_TRANSACTION, onSuccess, onError);
hubApi.on(HubApi.RequestType.CHOOSE_ADDRESS, onSuccess, onError);

// 4. After setup is complete, check for a redirect response
hubApi.checkRedirectResponse();

The available RequestTypes, corresponding to the API methods, are:

enum HubApi.RequestType {
    CHECKOUT = 'checkout',
    CHOOSE_ADDRESS = 'choose-address',
    SIGN_TRANSACTION = 'sign-transaction',
    SIGN_MESSAGE = 'sign-message',
}