/**
 * A navigable set which forwards all its method calls to another navigable set. Subclasses should
 * override one or more methods to modify the behavior of the backing set as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>Warning:</b> The methods of {@code ForwardingNavigableSet} forward <i>indiscriminately</i>

上記の例では必要な部分を全て示していますが、あまり便利ではありません。`item` を直接返すことができるし、**FastAPI** はそれを `dict` に変換して `JSONResponse` に含めてくれるなど。すべて、デフォルトの動作です。

では、これを使ってカスタムレスポンスをどう返すか見てみましょう。

[XML](https://en.wikipedia.org/wiki/XML)レスポンスを返したいとしましょう。

XMLを文字列にし、`Response` に含め、それを返します。

{* ../../docs_src/response_directly/tutorial002_py310.py hl[1,18] *}

## Response Model の仕組み { #how-a-response-model-works }

* **默认情况下**，这意味着你**每个 IP 地址只能拥有一个 HTTPS 证书**。
    * 无论你的服务器有多大，或者服务器上的每个应用程序有多小。
    * 不过，对此有一个**解决方案**。
* **TLS** 协议（在 HTTP 之下的 TCP 层处理加密的协议）有一个**扩展**，称为 **[<abbr title="Server Name Indication - 服务器名称指示">SNI</abbr>](https://en.wikipedia.org/wiki/Server_Name_Indication)**。
    * SNI 扩展允许一台服务器（具有 **单个 IP 地址**）拥有 **多个 HTTPS 证书** 并提供 **多个 HTTPS 域名/应用程序**。
    * 为此，服务器上会有**单独**的一个组件（程序）侦听**公共 IP 地址**，这个组件必须拥有服务器中的**所有 HTTPS 证书**。
* **获得安全连接后**，通信协议**仍然是HTTP**。

 * be reflected in the result of {@link #equals(Object)}.
 *
 * <p><a href="http://en.wikipedia.org/wiki/Internationalized_domain_name">Internationalized domain
 * names</a> such as {@code 网络.cn} are supported, as are the equivalent <a
 * href="http://en.wikipedia.org/wiki/Internationalized_domain_name">IDNA Punycode-encoded</a>
 * versions.
 *
 * @author Catherine Berry
 * @since 5.0
 */

 * before the {@link Service} reaches the {@linkplain State#RUNNING RUNNING} state. The set of legal
 * transitions form a <a href="http://en.wikipedia.org/wiki/Directed_acyclic_graph">DAG</a>,
 * therefore every method of the listener will be called at most once. N.B. The {@link State#FAILED}

release. For example, in OkHttp 2.2 we dropped support for SSL 3.0 in response to the [POODLE](https://googleonlinesecurity.blogspot.ca/2014/10/this-poodle-bites-exploiting-ssl-30.html) attack. And in OkHttp 2.3 we dropped support for [RC4](https://en.wikipedia.org/wiki/RC4#Security). As with your desktop web browser, staying up-to-date with OkHttp is the best way to stay secure.

You can build your own connection spec with a custom set of TLS versions and cipher suites. For example, this configuration...

/**
 * A multiset which forwards all its method calls to another multiset. Subclasses should override
 * one or more methods to modify the behavior of the backing multiset as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>Warning:</b> The methods of {@code ForwardingMultiset} forward <b>indiscriminately</b> to

/**
 * A map which forwards all its method calls to another map. Subclasses should override one or more
 * methods to modify the behavior of the backing map as desired per the <a
 * href="http://en.wikipedia.org/wiki/Decorator_pattern">decorator pattern</a>.
 *
 * <p><b>Warning:</b> The methods of {@code ForwardingMap} forward <i>indiscriminately</i> to the

    * 서버가 아무리 크든, 그 위에 올린 각 애플리케이션이 아무리 작든 상관없습니다.
    * 하지만 이에 대한 **해결책**이 있습니다.
* **TLS** 프로토콜(HTTP 이전, TCP 레벨에서 암호화를 처리하는 것)에 대한 **확장** 중에 **[<abbr title="Server Name Indication - 서버 이름 표시">SNI</abbr>](https://en.wikipedia.org/wiki/Server_Name_Indication)**라는 것이 있습니다.
    * 이 SNI 확장을 사용하면, 단일 서버(**단일 IP 주소**)에서 **여러 HTTPS 인증서**를 사용하고 **여러 HTTPS 도메인/애플리케이션**을 제공할 수 있습니다.

 * information on "bogons", including lists of IPv6 bogon space, see:
 *
 * <ul>
 *   <li><a target="_parent"
 *       href="http://en.wikipedia.org/wiki/Bogon_filtering">http://en.wikipedia.
 *       org/wiki/Bogon_filtering</a>
 *   <li><a target="_parent"
 *       href="http://www.cymru.com/Bogons/ipv6.txt">http://www.cymru.com/Bogons/ ipv6.txt</a>