## Usar `CORSMiddleware`

Você pode configurá-lo em sua aplicação **FastAPI** usando o `CORSMiddleware`.

* Importe `CORSMiddleware`.
* Crie uma lista de origens permitidas (como strings).
* Adicione-a como um "middleware" à sua aplicação **FastAPI**.

Você também pode especificar se o seu backend permite:

* Credenciais (Cabeçalhos de autorização, Cookies, etc).

As they are part of the URL, they are "naturally" strings.

But when you declare them with Python types (in the example above, as `int`), they are converted to that type and validated against it.

All the same process that applied for path parameters also applies for query parameters:

* Editor support (obviously)
* Data <abbr title="converting the string that comes from an HTTP request into Python data">"parsing"</abbr>

## Use `CORSMiddleware`

You can configure it in your **FastAPI** application using the `CORSMiddleware`.

* Import `CORSMiddleware`.
* Create a list of allowed origins (as strings).
* Add it as a "middleware" to your **FastAPI** application.

You can also specify whether your backend allows:

* Credentials (Authorization headers, Cookies, etc).

func (h *Target) Name() string {
	return "minio-http-" + h.config.Name
}

// Type - returns type of the target
func (h *Target) Type() types.TargetType {
	return types.TargetHTTP
}

// Endpoint returns the backend endpoint
func (h *Target) Endpoint() string {
	return h.config.Endpoint.String()
}

func (h *Target) String() string {
	return h.config.Name
}

	meta[xhttp.AmzBucketReplicationStatus] = replication.Replica.String()
	return meta
}

type caseInsensitiveMap map[string]string

// Lookup map entry case insensitively.
func (m caseInsensitiveMap) Lookup(key string) (string, bool) {
	if len(m) == 0 {
		return "", false
	}
	for _, k := range []string{
		key,
		strings.ToLower(key),
		http.CanonicalHeaderKey(key),
	} {
		v, ok := m[k]

			"X-Amz-Server-Side-Encryption-Aws-Kms-Key-Id": []string{""},
			"X-Amz-Server-Side-Encryption-Context":        []string{""},
		},
		Expected: true,
	}, // 4
	{
		Header: http.Header{
			"X-Amz-Server-Side-Encryption":                []string{"AES256"},
			"X-Amz-Server-Side-Encryption-Aws-Kms-Key-Id": []string{""},
		},
		Expected: true,
	}, // 5

	}
	fi.Metadata = make(map[string]string, len(j.MetaSys))
	for k, v := range j.MetaSys {
		fi.Metadata[k] = string(v)
	}

	fi.ReplicationState = GetInternalReplicationState(j.MetaSys)
	if j.FreeVersion() {
		fi.SetTierFreeVersion()
		fi.TransitionTier = string(j.MetaSys[metaTierName])
		fi.TransitionedObjName = string(j.MetaSys[metaTierObjName])
		fi.TransitionVersionID = string(j.MetaSys[metaTierVersionID])
	}

pkg runtime/debug, type BuildInfo struct, Path string
pkg runtime/debug, type Module struct
pkg runtime/debug, type Module struct, Path string
pkg runtime/debug, type Module struct, Replace *Module
pkg runtime/debug, type Module struct, Sum string
pkg runtime/debug, type Module struct, Version string
pkg strings, func ReplaceAll(string, string, string) string
pkg strings, method (*Builder) Cap() int

     */
    String decimal = "(?:\\d+#(?:\\.\\d*#)?|\\.\\d+#)";
    String completeDec = decimal + "(?:[eE][+-]?\\d+#)?[fFdD]?";
    String hex = "(?:[0-9a-fA-F]+#(?:\\.[0-9a-fA-F]*#)?|\\.[0-9a-fA-F]+#)";
    String completeHex = "0[xX]" + hex + "[pP][+-]?\\d+#[fFdD]?";
    String fpPattern = "[+-]?(?:NaN|Infinity|" + completeDec + "|" + completeHex + ")";
    fpPattern =

   * are expected.
   *
   * @param string the string representation of a {@code float} value
   * @return the floating point value represented by {@code string}, or {@code null} if {@code
   *     string} has a length of zero or cannot be parsed as a {@code float} value
   * @throws NullPointerException if {@code string} is {@code null}
   * @since 14.0
   */
  @GwtIncompatible // regular expressions