@microsoft/signalr/dist/esm/AccessTokenHttpClient.js

ASP.NET Core SignalR Client

// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
import { HeaderNames } from "./HeaderNames";
import { HttpClient } from "./HttpClient";
/** @private */
export class AccessTokenHttpClient extends HttpClient {
    constructor(innerClient, accessTokenFactory) {
        super();
        this._innerClient = innerClient;
        this._accessTokenFactory = accessTokenFactory;
    }
    async send(request) {
        let allowRetry = true;
        if (this._accessTokenFactory && (!this._accessToken || (request.url && request.url.indexOf("/negotiate?") > 0))) {
            // don't retry if the request is a negotiate or if we just got a potentially new token from the access token factory
            allowRetry = false;
            this._accessToken = await this._accessTokenFactory();
        }
        this._setAuthorizationHeader(request);
        const response = await this._innerClient.send(request);
        if (allowRetry && response.statusCode === 401 && this._accessTokenFactory) {
            this._accessToken = await this._accessTokenFactory();
            this._setAuthorizationHeader(request);
            return await this._innerClient.send(request);
        }
        return response;
    }
    _setAuthorizationHeader(request) {
        if (!request.headers) {
            request.headers = {};
        }
        if (this._accessToken) {
            request.headers[HeaderNames.Authorization] = `Bearer ${this._accessToken}`;
        }
        // don't remove the header if there isn't an access token factory, the user manually added the header in this case
        else if (this._accessTokenFactory) {
            if (request.headers[HeaderNames.Authorization]) {
                delete request.headers[HeaderNames.Authorization];
            }
        }
    }
    getCookieString(url) {
        return this._innerClient.getCookieString(url);
    }
}
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