Em sua rota WebSocket você pode esperar (`await`) por mensagens e enviar mensagens.

{*../../docs_src/websockets/tutorial001.py hl[48:52]*}

Você pode receber e enviar dados binários, de texto e JSON.

## Tente você mesmo

Se seu arquivo for nomeado `main.py`, execute sua aplicação com:

<div class="termy">

```console
$ fastapi dev main.py

	## version is purposefully set to '3' for minio to migrate configuration file
	echo '{"version": "3", "credential": {"accessKey": "minio", "secretKey": "minio123"}, "region": "us-east-1"}' >"$MINIO_CONFIG_DIR/config.json"

	if ! wget -q -O "$FUNCTIONAL_TESTS" https://raw.githubusercontent.com/minio/mc/master/functional-tests.sh; then
		echo "failed to download https://raw.githubusercontent.com/minio/mc/master/functional-tests.sh"
		exit 1

| *Valid Range* | *Minimum value of 900. Maximum value of 31536000.* |
| *Required*    | *No*                                               |

### Policy

    runs-on: ubuntu-latest
    steps:
      - name: git clone
        uses: actions/checkout@v5
      - id: setup-matrix
        run: echo "matrix=$(jq -c -f .github/workflows/extract-unit-test-split.jq .teamcity/subprojects.json)" >> $GITHUB_OUTPUT
      - name: setup java
        uses: actions/setup-java@v5
        with:
          distribution: temurin
          java-version: 17
      - id: determine-sys-prop-args

```

you would receive the multiple `q` *query parameters'* values (`foo` and `bar`) in a Python `list` inside your *path operation function*, in the *function parameter* `q`.

So, the response to that URL would be:

```JSON
{
  "q": [
    "foo",
    "bar"
  ]
}
```

/// tip

    /**
     * Default constructor.
     */
    public ApiAdminBackupAction() {
        super();
    }

    /**
     * Retrieves a list of available backup files.
     *
     * @return JSON response with backup file list
     */
    // GET /api/admin/backup/files
    @Execute
    public JsonResponse<ApiResult> files() {
        final List<Map<String, String>> list = getBackupItems();

6. Here we are returning a dictionary that contains `items` which is a list of dataclasses.

    FastAPI is still capable of <abbr title="converting the data to a format that can be transmitted">serializing</abbr> the data to JSON.

7. Here the `response_model` is using a type annotation of a list of `Author` dataclasses.

    Again, you can combine `dataclasses` with standard type annotations.

{* ../../docs_src/header_params/tutorial003.py hl[9] *}

다음과 같은 두 개의 HTTP 헤더를 전송하여 해당 *경로* 와 통신할 경우:

```
X-Token: foo
X-Token: bar
```

응답은 다음과 같습니다:

```JSON
{
    "X-Token values": [
        "bar",
        "foo"
    ]
}
```

## 요약

`Header`는 `Query`, `Path`, `Cookie`와 동일한 패턴을 사용하여 선언합니다.

			contentType:  "text/plain",
			expectStatus: 206,
		},
		{
			name:         "Success 200 OK",
			statusCode:   200,
			body:         "full-object-data",
			contentType:  "application/json",
			expectStatus: 200,
		},
		{
			name:         "Client Error 400",
			statusCode:   400,
			body:         "bad-request",
			contentType:  "application/xml",
			expectStatus: 400,
		},
	}

6. Hier geben wir ein Dictionary zurück, das `items` enthält, welches eine Liste von Datenklassen ist.

    FastAPI ist weiterhin in der Lage, die Daten nach JSON zu <abbr title="Konvertieren der Daten in ein übertragbares Format">serialisieren</abbr>.

7. Hier verwendet das `response_model` als Typannotation eine Liste von `Author`-Datenklassen.