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+---
+title: Upgrade-Insecure-Requests
+slug: Web/HTTP/Headers/Upgrade-Insecure-Requests
+translation_of: Web/HTTP/Headers/Upgrade-Insecure-Requests
+---
+<div>{{HTTPSidebar}}</div>
+
+<p>O cabeçalho HTTP <strong><code>Upgrade-Insecure-Requests</code></strong> envia um sinal ao servidor expressando a preferência do cliente por uma resposta criptografada e autenticada, e podendo manipular com êxito a diretiva {{CSP("upgrade-insecure-requests")}} <a href="/en-US/docs/Web/Security/CSP">CSP</a>.</p>
+
+<p> </p>
+
+<table class="properties">
+ <tbody>
+  <tr>
+   <th scope="row">Header type</th>
+   <td>{{Glossary("Request header")}}</td>
+  </tr>
+  <tr>
+   <th scope="row">{{Glossary("Forbidden header name")}}</th>
+   <td>no</td>
+  </tr>
+ </tbody>
+</table>
+
+<p> </p>
+
+<h2 id="Syntaxe">Syntaxe</h2>
+
+<pre class="syntaxbox">Upgrade-Insecure-Requests: 1</pre>
+
+<h2 id="Exemplos">Exemplos</h2>
+
+<p><span id="result_box" lang="pt"><span>Um cliente solicita ao servidor que ele faça o suporte aos mecanismos de upgrade de {{CSP ("upgrade-insecure-requests")}}:</span></span></p>
+
+<pre>GET / HTTP/1.1
+Host: example.com
+Upgrade-Insecure-Requests: 1</pre>
+
+<p><span id="result_box" lang="pt"><span>O servidor agora pode redirecionar para uma versão segura do site.</span> <span>Um cabeçalho {{HTTPHeader ("Vary")}} pode ser usado para que o site não seja veiculado por caches à clientes que não oferecem suporte ao mecanismo de upgrade.</span></span></p>
+
+<pre>Local: https://example.com/
+Vary: Upgrade-Insecure-Requests</pre>
+
+<h2 id="Especificações">Especificações</h2>
+
+<table class="standard-table">
+ <tbody>
+  <tr>
+   <th scope="col">Especificação</th>
+   <th scope="col">Status</th>
+   <th scope="col">Comentário</th>
+  </tr>
+  <tr>
+   <td>{{specName("Upgrade Insecure Requests", "#preference", "upgrade-insecure-requests")}}</td>
+   <td>{{Spec2('Upgrade Insecure Requests')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Compatibilidade_do_Navegador">Compatibilidade do Navegador</h2>
+
+<p class="hidden">The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p>
+
+<p>{{Compat("http.headers.Upgrade-Insecure-Requests")}}</p>
+
+<h2 id="Veja_também">Veja também:</h2>
+
+<ul>
+ <li>{{HTTPHeader("Content-Security-Policy")}}</li>
+ <li>CSP {{CSP("upgrade-insecure-requests")}} directive</li>
+</ul>