The [ClientHelloInfo] struct passed to [Config.GetCertificate] now includes an `Extensions` field, which can be useful for fingerprinting TLS clients.<!-- go.dev/issue/32936 -->...

Here's the reference information for the request parameters.

These are the special functions that you can put in *path operation function* parameters or dependency functions with `Annotated` to get data from the request.

It includes:

* `Query()`
* `Path()`
* `Body()`
* `Cookie()`
* `Header()`
* `Form()`
* `File()`

You can import them all directly from `fastapi`:

```python

MinIO Project, (C) 2015-2023 MinIO, Inc.

This product includes software developed at MinIO, Inc.
(https://min.io/).

The MinIO project contains unmodified/modified subcomponents too with
separate copyright notices and license terms. Your use of the source
code for these subcomponents is subject to the terms and conditions

    implementation(projects.binaryCompatibility)

    implementation("org.codenarc:CodeNarc") {
        exclude(group = "org.apache.groovy")
        exclude(group = "org.codehaus.groovy")
    }
    implementation("com.github.javaparser:javaparser-symbol-solver-core") {
        exclude(group = "com.google.guava")
    }
    implementation(kotlin("gradle-plugin"))

        <configuration>
          <parameter>
            <excludes>
              <exclude>org.apache.maven.settings.io.xpp3.SettingsXpp3Reader#contentTransformer</exclude>
              <exclude>org.apache.maven.settings.RuntimeInfo</exclude>
              <exclude>org.apache.maven.settings.Settings#setModelEncoding(java.lang.String):METHOD_REMOVED</exclude>
            </excludes>
          </parameter>
        </configuration>

    ignoreMissingClasses = true // because of a missing scala.runtime.AbstractFunction0 class
    richReport({
        it.includedClasses = toPatterns(PublicApi.includes + PublicKotlinDslApi.includes)
        it.excludedClasses = toPatterns(PublicApi.excludes + PublicKotlinDslApi.excludes)

  /**
   * Returns an immutable sorted set containing the given elements sorted by their natural ordering.
   * When multiple elements are equivalent according to {@link Comparable#compareTo}, only the first
   * one specified is included.
   *
   * @throws NullPointerException if any element is null
   */
  public static <E extends Comparable<? super E>> ImmutableSortedSet<E> of(E e1, E e2) {
    return construct(Ordering.natural(), 2, e1, e2);
  }

  /** Ready async calls in the order they'll be run. */
  private val readyAsyncCalls = ArrayDeque<AsyncCall>()

  /** Running asynchronous calls. Includes canceled calls that haven't finished yet. */
  private val runningAsyncCalls = ArrayDeque<AsyncCall>()

  /** Running synchronous calls. Includes canceled calls that haven't finished yet. */
  private val runningSyncCalls = ArrayDeque<RealCall>()

```

`app.add_middleware()` receives a middleware class as the first argument and any additional arguments to be passed to the middleware.

## Integrated middlewares

**FastAPI** includes several middlewares for common use cases, we'll see next how to use them.

/// note | "Technical Details"

For the next examples, you could also use `from starlette.middleware.something import SomethingMiddleware`.

There's a mini <a href="https://sqlmodel.tiangolo.com/tutorial/fastapi/" class="external-link" target="_blank">tutorial on using SQLModel with FastAPI</a>. ✨