* TCP ne connaît pas les "domaines", seulement les adresses IP.
    * L'information sur le domaine spécifique demandé se trouve dans les données HTTP.
* Les certificats HTTPS "certifient" un certain domaine, mais le protocole et le cryptage se font au niveau TCP, avant de savoir quel domaine est traité.
* Par défaut, cela signifie que vous ne pouvez avoir qu'un seul certificat HTTPS par adresse IP.

## `fastapi run` { #fastapi-run }

Das Ausführen von `fastapi run` startet FastAPI standardmäßig im Produktionsmodus.

| `license_info` | `dict` | Die Lizenzinformationen für die freigegebene API. Kann mehrere Felder enthalten. <details><summary><code>license_info</code>-Felder...

Es gibt jedoch bestimmte Fälle, in denen es nützlich ist, auf das `Request`-Objekt zuzugreifen.

## Das `Request`-Objekt direkt verwenden { #use-the-request-object-directly }

Angenommen, Sie möchten auf die IP-Adresse/den Host des Clients in Ihrer *Pfadoperation-Funktion* zugreifen.

Dazu müssen Sie direkt auf den Request zugreifen.

{* ../../docs_src/using_request_directly/tutorial001_py39.py hl[1,7:8] *}

    val addressE = decodeIpv6("2001:db8::1:0:0:1")!!
    assertThat(canonicalizeInetAddress(addressE)).isEqualTo(addressE)

    val addressF = decodeIpv6("0:0:0:0:0:ffff:7f00:1")!!
    assertThat(canonicalizeInetAddress(addressF)).isEqualTo(addressB)

    val addressG = decodeIpv6("0:0:0:0:0:ffff:c0a8:1")!!
    assertThat(canonicalizeInetAddress(addressG)).isEqualTo(addressC)
  }

     *
     * @return the resolved host name, or the host address if it could not be resolved
     */
    String getHostName();

    /**
     * Return the IP address as text such as "192.168.1.15".
     *
     * @return the ip address
     */
    String getHostAddress();

    /**
     * Converts this address to an InetAddress.
     *
     * @return this address as an InetAddress

 * address also includes the SSL socket factory, hostname verifier, and certificate pinner.
 *
 * HTTP requests that share the same [Address] may also share the same [Connection].
 */
class Address(
  uriHost: String,
  uriPort: Int,
  /** Returns the service that will be used to resolve IP addresses for hostnames. */
  @get:JvmName("dns") val dns: Dns,

		t.Fatalf("Failed to setup join table for person, got error %v", err)
	}

	if err := DB.AutoMigrate(&Person{}, &Address{}); err != nil {
		t.Fatalf("Failed to migrate, got %v", err)
	}

	address1 := Address{Name: "address 1"}
	address2 := Address{Name: "address 2"}
	person := Person{Name: "person", Addresses: []Address{address1, address2}}
	DB.Create(&person)

  private val addressA = factory.newAddress("a")
  private val routeA1 = factory.newRoute(addressA)
  private val addressB = factory.newAddress("b")
  private val routeB1 = factory.newRoute(addressB)
  private val addressC = factory.newAddress("c")
  private val routeC1 = factory.newRoute(addressC)

  @AfterEach fun tearDown() {
    factory.close()
    peer.close()
  }

    /**
     * Retrieve all addresses of a host by it's address. NetBIOS hosts can
     * have many names for a given IP address. The name and IP address make the
     * NetBIOS address. This provides a way to retrieve the other names for a
     * host with the same IP address.
     *
     * @param addr
     *            the address to query
     * @return resolved addresses
     * @throws UnknownHostException