builder.add("", "pin1", "pin2")
  }

  @Test
  fun challenge() {
    var challenge = Challenge("", mapOf("" to ""))
    challenge = Challenge("", "")
    val scheme: String = challenge.scheme
    val authParams: Map<String?, String> = challenge.authParams
    val realm: String? = challenge.realm
    val charset: Charset = challenge.charset

<picture>
  <source media="(prefers-color-scheme: dark)" srcset="./gradle-white-primary.png" width="350px">
  <img alt="Gradle" src="./gradle-dark-green-primary.png" width="350px">
</picture>

[![Revved up by Develocity](https://img.shields.io/badge/Revved%20up%20by-Develocity-06A0CE?logo=Gradle&labelColor=02303A)](https://ge.gradle.org/scans)

Remember that dependencies can have sub-dependencies?

`get_current_user` will have a dependency with the same `oauth2_scheme` we created before.

The same as we were doing before in the *path operation* directly, our new dependency `get_current_user` will receive a `token` as a `str` from the sub-dependency `oauth2_scheme`:

=== "Python 3.10+"

    ```Python hl_lines="25"
    {!> ../../../docs_src/security/tutorial002_an_py310.py!}

   *
   * This will be invoked for route selection regardless of whether the client
   * is configured with a single proxy, a proxy selector, or neither.
   *
   * @param url a URL with only the scheme, hostname, and port specified.
   */
  open fun proxySelectStart(
    call: Call,
    url: HttpUrl,
  ) {
  }

  /**
   * Invoked after proxy selection.
   *

## ⚙️ `SecurityScopes`

🔜 ℹ 🔗 `get_current_user`.

👉 1️⃣ ⚙️ 🔗 🔛.

📥 👥 ⚙️ 🎏 Oauth2️⃣ ⚖ 👥 ✍ ⏭, 📣 ⚫️ 🔗: `oauth2_scheme`.

↩️ 👉 🔗 🔢 🚫 ✔️ 🙆 ↔ 📄 ⚫️, 👥 💪 ⚙️ `Depends` ⏮️ `oauth2_scheme`, 👥 🚫 ✔️ ⚙️ `Security` 🕐❔ 👥 🚫 💪 ✔ 💂‍♂ ↔.

👥 📣 🎁 🔢 🆎 `SecurityScopes`, 🗄 ⚪️➡️ `fastapi.security`.

👉 `SecurityScopes` 🎓 🎏 `Request` (`Request` ⚙️ 🤚 📨 🎚 🔗).

    // Adapt the request and response into our Request and Response domain model.
    val scheme = if (request.handshake != null) "https" else "http"
    val authority = request.headers["Host"] // Has host and port.
    val fancyRequest =
      Request.Builder()
        .url("$scheme://$authority/")
        .headers(request.headers)
        .build()
    val fancyResponse =
      Response.Builder()

## `HTTPSRedirectMiddleware`

Enforces that all incoming requests must either be `https` or `wss`.

Any incoming requests to `http` or `ws` will be redirected to the secure scheme instead.

```Python hl_lines="2  6"
{!../../../docs_src/advanced_middleware/tutorial001.py!}
```

## `TrustedHostMiddleware`

    val request = server.takeRequest()
    assertThat(request.requestLine).isEqualTo(
      "GET /a/deep/path?key=foo%20bar HTTP/1.1",
    )
    val requestUrl = request.requestUrl
    assertThat(requestUrl!!.scheme).isEqualTo("http")
    assertThat(requestUrl.host).isEqualTo(server.hostName)
    assertThat(requestUrl.port).isEqualTo(server.port)
    assertThat(requestUrl.encodedPath).isEqualTo("/a/deep/path")

      Header(TARGET_AUTHORITY, ""),
      Header(TARGET_METHOD, "GET"),
      Header(TARGET_METHOD, "POST"),
      Header(TARGET_PATH, "/"),
      Header(TARGET_PATH, "/index.html"),
      Header(TARGET_SCHEME, "http"),
      Header(TARGET_SCHEME, "https"),
      Header(RESPONSE_STATUS, "200"),
      Header(RESPONSE_STATUS, "204"),
      Header(RESPONSE_STATUS, "206"),
      Header(RESPONSE_STATUS, "304"),
      Header(RESPONSE_STATUS, "400"),

 * **Cache**: directory
 * **CacheControl**: immutable, maxAgeSeconds, maxStaleSeconds, minFreshSeconds, mustRevalidate,
   noCache, noStore, noTransform, onlyIfCached, sMaxAgeSeconds
 * **Challenge**: authParams, charset, realm, scheme
 * **CipherSuite**: javaName
 * **ConnectionSpec**: cipherSuites, supportsTlsExtensions, tlsVersions
 * **Cookie**: domain, expiresAt, hostOnly, httpOnly, name, path, persistent, value
 * **Dispatcher**: executorService