- advanced/testing-dependencies.md
    - advanced/async-tests.md
    - advanced/settings.md
    - advanced/openapi-callbacks.md
    - advanced/openapi-webhooks.md
    - advanced/wsgi.md
    - advanced/generate-clients.md
    - advanced/advanced-python-types.md
    - advanced/json-base64-bytes.md
    - advanced/strict-content-type.md
    - advanced/vibe.md
  - fastapi-cli.md
  - editor-support.md
  - Deployment:

 *  New: `okhttp-sse` is an early preview of Server-Sent Events (SSE). This feature is incomplete
    and is only suitable for experimental use.
 *  New: MockWebServer now supports client authentication (mutual TLS). Call `requestClientAuth()`
    to permit an optional client certificate or `requireClientAuth()` to require one.
 *  New: `RecordedRequest.getHandshake()` returns the HTTPS handshake of a request sent to
    `MockWebServer`.

```mermaid
sequenceDiagram

participant client as Client
participant handler as Exception handler
participant dep as Dep with yield
participant operation as Path Operation
participant tasks as Background tasks

    Note over client,tasks: Can raise exception for dependency, handled after response is sent
    Note over client,operation: Can raise HTTPException and can change the response

### Client Binaries

filename | sha512 hash
-------- | -----------
[kubernetes-client-darwin-amd64.tar.gz](https://dl.k8s.io/v1.27.16/kubernetes-client-darwin-amd64.tar.gz) | 8c4a574dfa1140600c1b74b071aac5f893a609917652793e84cc344aa5b1fc8b9578109953203e6f968183f5b798144efa33cdc36c4a5df58489c8553f508e2f

* de la donnée soit envoyée par le client à travers le réseau
* de la donnée envoyée depuis votre programme soit reçue par le client à travers le réseau
* le contenu d'un fichier sur le disque soit lu par le système et passé à votre programme
* le contenu que votre programme a passé au système soit écrit sur le disque

client = mqtt.Client(client_id="myclientid",clean_session=False)

client.on_connect = on_connect
client.on_message = on_message

client.connect("localhost",1883,60)
client.loop_forever()
```

Execute this example python program to watch for MQTT events on the console.

```py
python mqtt.py
```

Open another terminal and upload a JPEG image into `images` bucket.

```

* In der OpenAPI *Pfadoperation* ein **JSON-Schema** für die Response hinzuzufügen.
    * Dieses wird von der **automatischen Dokumentation** verwendet.
    * Es wird auch von automatisch Client-Code-generierenden Tools verwendet.

        .build(),
    )
    client =
      client
        .newBuilder()
        .sslSocketFactory(
          handshakeCertificates.sslSocketFactory(),
          handshakeCertificates.trustManager,
        ).hostnameVerifier(NULL_HOSTNAME_VERIFIER)
        .build()
    val request = Request.Builder().url(server.url("/")).build()
    val response1 = client.newCall(request).execute()

Hier ist eine visuelle Darstellung, wie der **Proxy** weitergeleitete Header zwischen dem Client und dem **Anwendungsserver** hinzufügt:

```mermaid
sequenceDiagram
    participant Client
    participant Proxy as Proxy/Loadbalancer
    participant Server as FastAPI Server

    Client->>Proxy: HTTPS-Request<br/>Host: mysuperapp.com<br/>Pfad: /items

    Note over Proxy: Proxy fügt Forwarded-Header hinzu

			// write error response only if no data or headers has been written to client yet
			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}
		return
	}

	if err = httpWriter.Close(); err != nil {
		if !httpWriter.HasWritten() && !statusCodeWritten { // write error response only if no data or headers has been written to client yet
			writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
			return
		}