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[WIP] Fix race condition in refresh token issuance #478

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[WIP] Fix race condition in refresh token issuance #478

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5aead49
Fix race condition in refresh token issuance
pavinduLakshan Apr 27, 2026
1915b4c
Address review comments
pavinduLakshan Apr 28, 2026
ae24f3f
Print debug logs in test workflow
pavinduLakshan Apr 28, 2026
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46 changes: 29 additions & 17 deletions packages/browser/src/__legacy__/helpers/authentication-helper.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -65,13 +65,15 @@ export class AuthenticationHelper<T extends MainThreadClientConfig | WebWorkerCl
protected _spaHelper: SPAHelper<T>;
protected _instanceId: number;
protected _isTokenRefreshing: boolean;
protected _refreshAccessTokenPromise?: Promise<User>;

public constructor(authClient: AsgardeoAuthClient<T>, spaHelper: SPAHelper<T>) {
this._authenticationClient = authClient;
this._storageManager = this._authenticationClient.getStorageManager();
this._spaHelper = spaHelper;
this._instanceId = this._authenticationClient.getInstanceId();
this._isTokenRefreshing = false;
this._refreshAccessTokenPromise = undefined;
}

public enableHttpHandler(httpClient: HttpClient): void {
Expand Down Expand Up @@ -174,23 +176,33 @@ export class AuthenticationHelper<T extends MainThreadClientConfig | WebWorkerCl
public async refreshAccessToken(
enableRetrievingSignOutURLFromSession?: (config: SPACustomGrantConfig) => void,
): Promise<User> {
try {
await this._authenticationClient.refreshAccessToken();
const customGrantConfig = await this.getCustomGrantConfigData();
if (customGrantConfig) {
await this.exchangeToken(customGrantConfig, enableRetrievingSignOutURLFromSession);
}
this._spaHelper.refreshAccessTokenAutomatically(this);
if (this._refreshAccessTokenPromise) {
return this._refreshAccessTokenPromise;
}

return this._authenticationClient.getUser();
} catch (error) {
const refreshTokenError: Message<string> = {
type: REFRESH_ACCESS_TOKEN_ERR0R,
};
this._refreshAccessTokenPromise = (async (): Promise<User> => {
try {
await this._authenticationClient.refreshAccessToken();
const customGrantConfig = await this.getCustomGrantConfigData();
if (customGrantConfig) {
await this.exchangeToken(customGrantConfig, enableRetrievingSignOutURLFromSession);
}
this._spaHelper.refreshAccessTokenAutomatically(this);

window.postMessage(refreshTokenError);
return Promise.reject(error);
}
return this._authenticationClient.getUser();
} catch (error) {
const refreshTokenError: Message<string> = {
type: REFRESH_ACCESS_TOKEN_ERR0R,
};

window.postMessage(refreshTokenError);
throw error;
} finally {
this._refreshAccessTokenPromise = undefined;
}
})();

return this._refreshAccessTokenPromise;
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}

protected async retryFailedRequests(failedRequest: HttpRequestInterface): Promise<HttpResponse> {
Expand Down Expand Up @@ -385,9 +397,9 @@ export class AuthenticationHelper<T extends MainThreadClientConfig | WebWorkerCl
})
.catch(async (error: HttpError) => {
if (error?.response?.status === 401 || !error?.response) {
let refreshTokenResponse: TokenResponse | User;
let refreshTokenResponse: User;
try {
refreshTokenResponse = await this._authenticationClient.refreshAccessToken();
refreshTokenResponse = await this.refreshAccessToken();
} catch (refreshError: any) {
if (isHttpHandlerEnabled) {
if (typeof httpErrorCallback === 'function') {
Expand Down
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