다음 인자들을 지원합니다:

* `allowed_hosts` - 호스트명으로 허용할 도메인 이름 목록입니다. `*.example.com` 같은 와일드카드 도메인으로 서브도메인을 매칭하는 것도 지원합니다. 어떤 호스트명이든 허용하려면 `allowed_hosts=["*"]`를 사용하거나 middleware를 생략하세요.
* `www_redirect` - True로 설정하면, 허용된 호스트의 non-www 버전으로 들어오는 요청을 www 버전으로 리디렉션합니다. 기본값은 `True`입니다.

들어오는 요청이 올바르게 검증되지 않으면 `400` 응답이 전송됩니다.

## `GZipMiddleware` { #gzipmiddleware }

`Accept-Encoding` 헤더에 `"gzip"`이 포함된 어떤 요청이든 GZip 응답을 처리합니다.

    val dohEnabledClient =
      client
        .newBuilder()
        .eventListener(EventListener.NONE)
        .dns(dohDns)
        .build()

    dohEnabledClient.get("https://www.twitter.com/robots.txt")
    dohEnabledClient.get("https://www.facebook.com/robots.txt")
  }

  @Test
  fun testCustomTrustManager() {
    assumeNetwork()

    val trustManager =
      object : X509TrustManager {

---

## Міні-документальний фільм про FastAPI { #fastapi-mini-documentary }

Наприкінці 2025 року вийшов [міні-документальний фільм про FastAPI](https://www.youtube.com/watch?v=mpR8ngthqiE), ви можете переглянути його онлайн:

regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

  ~ to you under the Apache License, Version 2.0 (the
  ~ "License"); you may not use this file except in compliance
  ~ with the License.  You may obtain a copy of the License at
  ~
  ~ http://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing,
  ~ software distributed under the License is distributed on an
  ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

	<licenses>
		<license>
			<name>GNU Lesser General Public License, version 2.1</name>
			<url>http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt</url>
			<distribution>repo</distribution>
		</license>
	</licenses>
	<organization>
		<name>CodeLibs Project</name>
		<url>https://www.codelibs.org/</url>
	</organization>
	<developers>
		<developer>
			<id>shinsuke</id>
			<name>Shinsuke Sugaya</name>

```
https://yourapi.com/invoices/?callback_url=https://www.external.org/events
```

mit einem JSON-Körper:

```JSON
{
    "id": "2expen51ve",
    "customer": "Mr. Richie Rich",
    "total": "9999"
}
```

dann verarbeitet *Ihre API* die Rechnung und sendet irgendwann später einen Callback-Request an die `callback_url` (die *externe API*):

```
https://www.external.org/events/invoices/2expen51ve
```