* as a single request/response exchange.
 *
 * ## Modern TLS
 *
 * There are trade-offs when selecting which options to include when negotiating a secure connection
 * to a remote host. Newer TLS options are quite useful:
 *
 *  * Server Name Indication (SNI) enables one IP address to negotiate secure connections for
 *    multiple domain names.
 *
 *  * Application Layer Protocol Negotiation (ALPN) enables the HTTPS port (443) to be used to

gold:
  - url: https://cryptapi.io/
    title: "CryptAPI: Your easy to use, secure and privacy oriented payment gateway."
    img: https://fastapi.tiangolo.com/img/sponsors/cryptapi.svg
  - url: https://platform.sh/try-it-now/?utm_source=fastapi-signup&utm_medium=banner&utm_campaign=FastAPI-signup-June-2023
    title: "Build, run and scale your apps on a modern, reliable, and secure PaaS."
    img: https://fastapi.tiangolo.com/img/sponsors/platform-sh.png

Next steps:
  * Deploy an HTTP Gateway: https://istio.io/latest/docs/tasks/traffic-management/ingress/ingress-control/

</a>

---

Istio is an open source service mesh that layers transparently onto existing distributed applications. Istio’s powerful features provide a uniform and more efficient way to secure, connect, and monitor services. Istio is the path to load balancing, service-to-service authentication, and monitoring – with few or no service code changes.

    * For this to work, a **single** component (program) running on the server, listening on the **public IP address**, must have **all the HTTPS certificates** in the server.
* **After** obtaining a secure connection, the communication protocol is **still HTTP**.
    * The contents are **encrypted**, even though they are being sent with the **HTTP protocol**.

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3

/**
 * Versions of TLS that can be offered when negotiating a secure socket. See
 * [javax.net.ssl.SSLSocket.setEnabledProtocols].
 */
enum class TlsVersion(
  @get:JvmName("javaName") val javaName: String,
) {
  TLS_1_3("TLSv1.3"), // 2016.
  TLS_1_2("TLSv1.2"), // 2008.

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package main

import (
	"encoding/binary"
	"encoding/hex"
	"fmt"
	"hash/crc32"
	"io"

	"github.com/secure-io/sio-go"
)

func extractInspectV1(keyHex string, r io.Reader, w io.Writer, okMsg string) error {
	id, err := hex.DecodeString(keyHex[:8])
	if err != nil {
		return err
	}

    </div>
  </div>
  <div id="announce-right" style="position: relative;">
    <div class="item">
      <a title="CryptAPI: Your easy to use, secure and privacy oriented payment gateway." style="display: block; position: relative;" href="https://cryptapi.io/" target="_blank">
        <span class="sponsor-badge">sponsor</span>

If you want to secure your API, there are several better things you can do, for example:

* Make sure you have well defined Pydantic models for your request bodies and responses.
* Configure any required permissions and roles using dependencies.

## `HTTPSRedirectMiddleware`

Enforces that all incoming requests must either be `https` or `wss`.

Any incoming requests to `http` or `ws` will be redirected to the secure scheme instead.

```Python hl_lines="2  6"
{!../../../docs_src/advanced_middleware/tutorial001.py!}
```

## `TrustedHostMiddleware`