Spotify.NET/docs/authorization_code/index.html
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<link rel="alternate" type="application/atom+xml" href="/SpotifyAPI-NET/news/atom.xml" title="SpotifyAPI-NET Blog Atom Feed"><title data-react-helmet="true">Authorization Code | SpotifyAPI-NET</title><meta data-react-helmet="true" property="og:url" content="https://johnnycrazy.github.io/SpotifyAPI-NET/docs/authorization_code"><meta data-react-helmet="true" name="docusaurus_locale" content="en"><meta data-react-helmet="true" name="docusaurus_version" content="current"><meta data-react-helmet="true" name="docusaurus_tag" content="docs-default-current"><meta data-react-helmet="true" property="og:title" content="Authorization Code | SpotifyAPI-NET"><meta data-react-helmet="true" name="description" content="This flow is suitable for long-running applications in which the user grants permission only once. It provides an access token that can be refreshed. Since the token exchange involves sending your secret key, perform this on a secure location, like a backend service, and not from a client such as a browser or from a mobile app."><meta data-react-helmet="true" property="og:description" content="This flow is suitable for long-running applications in which the user grants permission only once. It provides an access token that can be refreshed. Since the token exchange involves sending your secret key, perform this on a secure location, like a backend service, and not from a client such as a browser or from a mobile app."><link data-react-helmet="true" rel="shortcut icon" href="/SpotifyAPI-NET/img/favicon.ico"><link data-react-helmet="true" rel="canonical" href="https://johnnycrazy.github.io/SpotifyAPI-NET/docs/authorization_code"><link data-react-helmet="true" rel="alternate" href="https://johnnycrazy.github.io/SpotifyAPI-NET/docs/authorization_code" hreflang="en"><link data-react-helmet="true" rel="alternate" href="https://johnnycrazy.github.io/SpotifyAPI-NET/docs/authorization_code" hreflang="x-default"><link rel="stylesheet" href="/SpotifyAPI-NET/assets/css/styles.fa980c59.css">
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6.X</span></div><header><h1 class="docTitle_3a4h">Authorization Code</h1></header><div class="markdown"><blockquote><p>This flow is suitable for long-running applications in which the user grants permission only once. It provides an access token that can be refreshed. Since the token exchange involves sending your secret key, perform this on a secure location, like a backend service, and not from a client such as a browser or from a mobile app.</p></blockquote><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_2LWZ" id="existing-web-server"></a>Existing Web-Server<a class="hash-link" href="#existing-web-server" title="Direct link to heading">#</a></h2><p>If you are already in control of a Web-Server (like <code>ASP.NET</code>), you can start the flow by generating a login uri:</p><div class="codeBlockContainer_K1bP"><div class="codeBlockContent_hGly csharp"><div tabindex="0" class="prism-code language-csharp codeBlock_23N8 thin-scrollbar"><div class="codeBlockLines_39YC" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain">// Make sure &quot;http://localhost:5000&quot; is in your applications redirect URIs!</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">var loginRequest = new LoginRequest(</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> new Uri(&quot;http://localhost:5000&quot;),</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> &quot;ClientId&quot;,</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> LoginRequest.ResponseType.Code</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">{</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> Scope = new[] { Scopes.PlaylistReadPrivate, Scopes.PlaylistReadCollaborative }</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">};</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">var uri = loginRequest.ToUri();</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">// Redirect user to uri via your favorite web-server</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_Ue-o">Copy</button></div></div><p>When the user is redirected to the generated uri, they will have to login with their Spotify account and confirm that your application wants to access their user data. Once confirmed, they will be redirected to <code>http://localhost:5000</code> and a <code>code</code> parameter is attached to the query. This <code>code</code> has to be exchanged for an <code>access_token</code> and <code>refresh_token</code>:</p><div class="codeBlockContainer_K1bP"><div class="codeBlockContent_hGly csharp"><div tabindex="0" class="prism-code language-csharp codeBlock_23N8 thin-scrollbar"><div class="codeBlockLines_39YC" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain">// This method should be called from your web-server when the user visits &quot;http://localhost:5000&quot;</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">public Task GetCallback(string code)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">{</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> var response = await new OAuthClient().RequestToken(</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> new AuthorizationCodeTokenRequest(&quot;ClientId&quot;, &quot;ClientSecret&quot;, code, &quot;http://localhost:5000&quot;)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> );</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block">
</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> var spotify = new SpotifyClient(response.AccessToken);</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> // Also important for later: response.RefreshToken</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">}</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_Ue-o">Copy</button></div></div><p>If the token expires at some point (check via <code>response.IsExpired</code>), you can refresh it:</p><div class="codeBlockContainer_K1bP"><div class="codeBlockContent_hGly csharp"><div tabindex="0" class="prism-code language-csharp codeBlock_23N8 thin-scrollbar"><div class="codeBlockLines_39YC" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain">var newResponse = await new OAuthClient().RequestToken(</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> new AuthorizationCodeRefreshRequest(&quot;ClientId&quot;, &quot;ClientSecret&quot;, response.RefreshToken)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">);</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block">
</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">var spotify = new SpotifyClient(newResponse.AccessToken);</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_Ue-o">Copy</button></div></div><p>You can also let the <code>AuthorizationCodeAuthenticator</code> take care of the refresh part:</p><div class="codeBlockContainer_K1bP"><div class="codeBlockContent_hGly csharp"><div tabindex="0" class="prism-code language-csharp codeBlock_23N8 thin-scrollbar"><div class="codeBlockLines_39YC" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain">var response = await new OAuthClient().RequestToken(</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> new AuthorizationCodeTokenRequest(&quot;ClientId&quot;, &quot;ClientSecret&quot;, code, &quot;http://localhost:5000&quot;)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">);</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">var config = SpotifyClientConfig</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> .CreateDefault()</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> .WithAuthenticator(new AuthorizationCodeAuthenticator(&quot;ClientId&quot;, &quot;ClientSecret&quot;, response));</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block">
</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">var spotify = new SpotifyClient(config);</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_Ue-o">Copy</button></div></div><p>For a real example, have a look at <a href="https://github.com/JohnnyCrazy/SpotifyAPI-NET/tree/master/SpotifyAPI.Web.Examples/Example.ASP" target="_blank" rel="noopener noreferrer">Example.ASP</a>. This also uses the great package <code>AspNet.Security.OAuth.Spotify</code> which takes care of the OAuth flow inside of <code>ASP.NET</code>.</p><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_2LWZ" id="using-spotifywebauth"></a>Using Spotify.Web.Auth<a class="hash-link" href="#using-spotifywebauth" title="Direct link to heading">#</a></h2><p>For cross-platform CLI and desktop apps (non <code>UWP</code> apps), <code>Spotify.Web.Auth</code> can be used to supply a small embedded Web Server for the code retrieval.</p><div class="admonition admonition-warning alert alert--danger"><div class="admonition-heading"><h5><span class="admonition-icon"><svg xmlns="http://www.w3.org/2000/svg" width="12" height="16" viewBox="0 0 12 16"><path fill-rule="evenodd" d="M5.05.31c.81 2.17.41 3.38-.52 4.31C3.55 5.67 1.98 6.45.9 7.98c-1.45 2.05-1.7 6.53 3.53 7.7-2.2-1.16-2.67-4.52-.3-6.61-.61 2.03.53 3.33 1.94 2.86 1.39-.47 2.3.53 2.27 1.67-.02.78-.31 1.44-1.13 1.81 3.42-.59 4.78-3.42 4.78-5.56 0-2.84-2.53-3.22-1.25-5.61-1.52.13-2.03 1.13-1.89 2.75.09 1.08-1.02 1.8-1.86 1.33-.67-.41-.66-1.19-.06-1.78C8.18 5.31 8.68 2.45 5.05.32L5.03.3l.02.01z"></path></svg></span>warning</h5></div><div class="admonition-content"><p>Your client secret will be exposed when embedded in a desktop/CLI app. This can be abused and is not prefered. If possible, let the user create an application in the Spotify dashboard or let a server handle the Spotify communication.</p></div></div><div class="codeBlockContainer_K1bP"><div class="codeBlockContent_hGly csharp"><div tabindex="0" class="prism-code language-csharp codeBlock_23N8 thin-scrollbar"><div class="codeBlockLines_39YC" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token plain">private static EmbedIOAuthServer _server;</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block">
</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">public static async Task Main()</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">{</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> // Make sure &quot;http://localhost:5000/callback&quot; is in your spotify application as redirect uri!</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> _server = new EmbedIOAuthServer(new Uri(&quot;http://localhost:5000/callback&quot;), 5000);</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> await _server.Start();</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block">
</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> _server.AuthorizationCodeReceived += OnAuthorizationCodeReceived;</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> _server.ErrorReceived += OnErrorReceived;</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block">
</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> var request = new LoginRequest(_server.BaseUri, &quot;ClientId&quot;, LoginRequest.ResponseType.Code)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> {</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> Scope = new List&lt;string&gt; { Scopes.UserReadEmail }</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> };</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> BrowserUtil.Open(request.ToUri());</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">}</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block">
</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">private static async Task OnAuthorizationCodeReceived(object sender, AuthorizationCodeResponse response)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">{</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> await _server.Stop();</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block">
</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> var config = SpotifyClientConfig.CreateDefault();</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> var tokenResponse = await new OAuthClient(config).RequestToken(</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> new AuthorizationCodeTokenRequest(</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> &quot;ClientId&quot;, &quot;ClientSecret&quot;, response.Code, new Uri(&quot;http://localhost:5000/callback&quot;)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> )</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> );</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block">
</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> var spotify = new SpotifyClient(tokenResponse.AccessToken);</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> // do calls with Spotify and save token?</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">}</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block">
</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">private static async Task OnErrorReceived(object sender, string error, string state)</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">{</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> Console.WriteLine($&quot;Aborting authorization, error received: {error}&quot;);</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"> await _server.Stop();</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">}</span></div></div></div><button type="button" aria-label="Copy code to clipboard" class="copyButton_Ue-o">Copy</button></div></div><p>For real examples, have a look at <a href="https://github.com/JohnnyCrazy/SpotifyAPI-NET/tree/master/SpotifyAPI.Web.Examples/Example.CLI.PersistentConfig" target="_blank" rel="noopener noreferrer">Example.CLI.PersistentConfig</a> and <a href="https://github.com/JohnnyCrazy/SpotifyAPI-NET/tree/master/SpotifyAPI.Web.Examples/Example.CLI.CustomHTML" target="_blank" rel="noopener noreferrer">Example.CLI.CustomHTML</a></p></div></article><div class="margin-vert--xl"><div class="row"><div class="col"><a href="https://github.com/JohnnyCrazy/SpotifyAPI-NET/edit/master/SpotifyAPI.Docs/docs/authorization_code.md" target="_blank" rel="noreferrer noopener"><svg fill="currentColor" height="1.2em" width="1.2em" preserveAspectRatio="xMidYMid meet" role="img" viewBox="0 0 40 40" class="iconEdit_2_ui" aria-label="Edit page"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div><div class="col text--right"><em><small>Last updated on <time datetime="2021-06-20T18:50:51.000Z" class="lastUpdatedDate_1WI_">6/20/2021</time> by <strong>dependabot[bot]</strong></small></em></div></div></div><div class="margin-vert--lg"><nav class="pagination-nav" aria-label="Docs pages navigation"><div class="pagination-nav__item"><a class="pagination-nav__link" href="/SpotifyAPI-NET/docs/implicit_grant"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">« Implicit Grant</div></a></div><div class="pagination-nav__item pagination-nav__item--next"><a class="pagination-nav__link" href="/SpotifyAPI-NET/docs/pkce"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">PKCE »</div></a></div></nav></div></div></div><div class="col col--3"><div class="tableOfContents_35-E thin-scrollbar"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#existing-web-server" class="table-of-contents__link">Existing Web-Server</a></li><li><a href="#using-spotifywebauth" class="table-of-contents__link">Using Spotify.Web.Auth</a></li></ul></div></div></div></div></main></div></div><footer class="footer footer--dark"><div class="container"><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2021 Jonas Dellinger. Built with Docusaurus.</div></div></div></footer></div>
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