Garante que todas as requisições recebidas tenham um cabeçalho `Host` corretamente configurado, a fim de proteger contra ataques de cabeçalho de host HTTP.

{* ../../docs_src/advanced_middleware/tutorial002.py hl[2,6:8] *}

Os seguintes argumentos são suportados:

  names: List<String>,
) {
  var time = System.currentTimeMillis()
  for (dns in dnsProviders) {
    println("Testing ${dns.url}")
    for (host in names) {
      print("$host: ")
      System.out.flush()
      try {
        val results = dns.lookup(host)
        println(results)
      } catch (uhe: UnknownHostException) {
        var e: Throwable? = uhe
        while (e != null) {
          println(e)

        .addSubjectAlternativeName("intermediate_ca.com")
        .build()
    serverCert =
      HeldCertificate.Builder()
        .signedBy(serverIntermediateCa)
        .serialNumber(3L)
        .commonName("Local Host")
        .addSubjectAlternativeName(server.hostName)
        .build()
    clientRootCa =
      HeldCertificate.Builder()
        .serialNumber(1L)
        .certificateAuthority(1)
        .commonName("root")

	}

	// strip ports off of domainIPs
	domainIPsWithoutPorts := args.domainIPs.ApplyFunc(func(ip string) string {
		host, _, err := net.SplitHostPort(ip)
		if err != nil {
			if strings.Contains(err.Error(), "missing port in address") {
				host = ip
			}
		}
		return host
	})
	args.domainIPs = domainIPsWithoutPorts

	return args, nil

  val client =
    OkHttpClient.Builder()
      .trustMockServer()
      .build()

  @Test
  fun testRequest() {
    MockServerClient(mockServer.host, mockServer.serverPort).use { mockServerClient ->
      mockServerClient
        .`when`(
          request().withPath("/person")
            .withQueryStringParameter("name", "peter"),
        )

따라서 섹션

```Python
    uvicorn.run(app, host="0.0.0.0", port=8000)
```

이 실행됩니다.

---

해당 모듈(파일)을 가져오면 이런 일이 발생하지 않습니다

그래서 다음과 같은 다른 파일 `importer.py`가 있는 경우:

```Python
from myapp import app

# Some more code
```

이 경우 `myapp.py` 내부의 자동 변수에는 값이 `"__main__"`인 변수 `__name__`이 없습니다.

따라서 다음 행

```Python
    uvicorn.run(app, host="0.0.0.0", port=8000)
```

은 실행되지 않습니다.

      } else {
        requestBuilder.header("Transfer-Encoding", "chunked")
        requestBuilder.removeHeader("Content-Length")
      }
    }

    if (userRequest.header("Host") == null) {
      requestBuilder.header("Host", userRequest.url.toHostHeader())
    }

    if (userRequest.header("Connection") == null) {
      requestBuilder.header("Connection", "Keep-Alive")
    }

	loadCPUMetrics := func(ctx context.Context) (v madmin.CPUMetrics, err error) {
		var types madmin.MetricType = madmin.MetricsCPU

		m := collectLocalMetrics(types, collectMetricsOpts{
			hosts: map[string]struct{}{
				globalLocalNodeName: {},
			},
		})

		for _, hm := range m.ByHost {
			if hm.CPU != nil {
				v = *hm.CPU
				break
			}
		}

		return
	}

      // If the domain is present, it must domain match. Otherwise we have a host-only cookie.
      val urlHost = url.host
      if (domain == null) {
        domain = urlHost
      } else if (!domainMatch(urlHost, domain)) {
        return null // No domain match? This is either incompetence or malice!
      }

      // If the domain is a suffix of the url host, it must not be a public suffix.
      if (urlHost.length != domain.length &&

			expectedErrCode:       ErrMissingSignHeadersTag,
		},
		// Test case - 3.
		// Test case with valid inputs.
		{
			inputSignElement:      "SignedHeaders=host;x-amz-content-sha256;x-amz-date",
			expectedSignedHeaders: []string{"host", "x-amz-content-sha256", "x-amz-date"},
			expectedErrCode:       ErrNone,
		},
	}

	for i, testCase := range testCases {