{* ../../docs_src/middleware/tutorial001.py hl[8:9,11,14] *}

/// tip | Dica

Tenha em mente que cabeçalhos proprietários personalizados podem ser adicionados <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers" class="external-link" target="_blank">usando o prefixo 'X-'</a>.

Ahora, veamos cómo podrías usar eso para devolver un response personalizado.

Digamos que quieres devolver un response en <a href="https://en.wikipedia.org/wiki/XML" class="external-link" target="_blank">XML</a>.

Podrías poner tu contenido XML en un string, poner eso en un `Response`, y devolverlo:

{* ../../docs_src/response_directly/tutorial002.py hl[1,18] *}

## Notas

Sehen wir uns nun an, wie Sie damit eine benutzerdefinierte Response zurückgeben können.

Nehmen wir an, Sie möchten eine <a href="https://en.wikipedia.org/wiki/XML" class="external-link" target="_blank">XML</a>-Response zurückgeben.

Sie könnten Ihren XML-Inhalt als String in eine `Response` einfügen und sie zurückgeben:

{* ../../docs_src/response_directly/tutorial002.py hl[1,18] *}

    id: tf-nightly
    attributes:
      label: Have you reproduced the bug with TensorFlow Nightly?
      description: It is strongly suggested that you reproduce the bug with [TensorFlow Nightly](https://www.tensorflow.org/install/pip#nightly)
      options:
        - "Yes"
        - "No"
    validations:
      required: true

  - type: markdown
    attributes:
      value: |

- go.opentelemetry.io/proto/otlp: v1.3.1 → v1.4.0
- golang.org/x/crypto: v0.28.0 → v0.36.0
- golang.org/x/net: v0.30.0 → v0.38.0
- golang.org/x/oauth2: v0.23.0 → v0.27.0
- golang.org/x/sync: v0.8.0 → v0.12.0
- golang.org/x/sys: v0.26.0 → v0.31.0
- golang.org/x/term: v0.25.0 → v0.30.0
- golang.org/x/text: v0.19.0 → v0.23.0
- golang.org/x/time: v0.7.0 → v0.9.0
- google.golang.org/appengine: v1.6.7 → v1.4.0

 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,

Đối với vận hành thực tế (production), bạn sẽ sử dụng `fastapi run` thay thế. 🚀

Ở bên trong, **FastAPI CLI** sử dụng <a href="https://www.uvicorn.org" class="external-link" target="_blank">Uvicorn</a>, một server ASGI có hiệu suất cao, sẵn sàng cho vận hành thực tế (production). 😎

## `fastapi dev`

Chạy `fastapi dev` sẽ khởi động quá trình phát triển.

// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"crypto/subtle"
	"encoding/hex"
	"io"
	"net/http"
	"net/url"
	"strconv"
	"strings"
	"time"

	"github.com/klauspost/compress/gzhttp"

// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"archive/tar"
	"bufio"
	"bytes"
	"context"
	"errors"
	"fmt"
	"io"
	"io/fs"
	"os"
	"path"
	"runtime"
	"sync"
	"time"