* The encryption of the connection happens at the **TCP level**.
    * That's one layer **below HTTP**.
    * So, the **certificate and encryption** handling is done **before HTTP**.
* **TCP doesn't know about "domains"**. Only about IP addresses.
    * The information about the **specific domain** requested goes in the **HTTP data**.

* Die Verschlüsselung der Verbindung erfolgt auf **TCP-Ebene**.
    * Das ist eine Schicht **unter HTTP**.
    * Die Handhabung von **Zertifikaten und Verschlüsselung** erfolgt also **vor HTTP**.
* **TCP weiß nichts über „Domains“**. Nur über IP-Adressen.
    * Die Informationen über die angeforderte **spezifische Domain** befinden sich in den **HTTP-Daten**.

{* ../../docs_src/advanced_middleware/tutorial002_py310.py hl[2,6:8] *}

Die folgenden Argumente werden unterstützt:

* `allowed_hosts` – Eine Liste von Domain-Namen, die als Hostnamen zulässig sein sollten. Wildcard-Domains wie `*.example.com` werden unterstützt, um Subdomains zu matchen. Um jeden Hostnamen zu erlauben, verwenden Sie entweder `allowed_hosts=["*"]` oder lassen Sie diese Middleware weg.

{* ../../docs_src/advanced_middleware/tutorial002_py310.py hl[2,6:8] *}

The following arguments are supported:

* `allowed_hosts` - A list of domain names that should be allowed as hostnames. Wildcard domains such as `*.example.com` are supported for matching subdomains. To allow any hostname either use `allowed_hosts=["*"]` or omit the middleware.

   * unhealthy connections in its search, this will clean them up.
   *
   * If [routes] is non-null these are the resolved routes (ie. IP addresses) for the connection.
   * This is used to coalesce related domains to the same HTTP/2 connection, such as `square.com`
   * and `square.ca`.
   */
  internal fun callAcquirePooledConnection(
    doExtensiveHealthChecks: Boolean,
    address: Address,
    call: RealCall,

 * done by determining whether the domain ended with a {@linkplain #isPublicSuffix() public suffix}
 * but was not itself a public suffix. However, this test is no longer accurate. There are many
 * domains which are both public suffixes and addressable as hosts; {@code "uk.com"} is one example.
 * Using the subset of public suffixes that are {@linkplain #isRegistrySuffix() registry suffixes},

 *  Upgrade: [Okio 3.2.0][okio_3_2_0].


## Version 5.0.0-alpha.9

_2022-06-16_

 *  New: Enforce label length limits in URLs. `HttpUrl` now rejects URLs whose domains aren't valid.
    This includes overly-long domain names (longer than 253 characters), overly-long labels (more
    than 63 characters between dots), and empty labels.

- Allow for Pod search domains to be a single dot `.` or contain an underscore `_` ([#127167](https://github.com/kubernetes/kubernetes/pull/127167), [@adrianmoisey](https://github.com/adrianmoisey)) [SIG Apps, Network and Testing]

                """
                A `list` of `dict`s with connectivity information to a target server.

                You would use it, for example, if your application is served from
                different domains and you want to use the same Swagger UI in the
                browser to interact with each of them (instead of having multiple
                browser tabs open). Or if you want to leave fixed the possible URLs.

- Added TAS logic to the pod group scheduling cycle behind TopologyAwareWorkloadScheduling feature gate. This feature supports scheduling pod groups on nodes with matching topology domains. ([#137489](https://github.com/kubernetes/kubernetes/pull/137489), [@brejman](https://github.com/brejman)) [SIG API Machinery, Apps, Auth, CLI, Cloud Provider, Etcd, Node, Scheduling and Testing]