func TestNatsConnTLSCustomCA(t *testing.T) {
	s, opts := natsserver.RunServerWithConfig(filepath.Join("testdata", "contrib", "nats_tls.conf"))
	defer s.Shutdown()

	clientConfig := &NATSArgs{
		Enable: true,
		Address: xnet.Host{
			Name:      "localhost",
			Port:      (xnet.Port(opts.Port)),
			IsPortSet: true,
		},
		Subject:       "test",
		Secure:        true,
		CertAuthority: path.Join("testdata", "contrib", "certs", "root_ca_cert.pem"),

			Endpoint{URL: &url.URL{Scheme: "http", Host: "localhost:9000", Path: "/d1"}, IsLocal: true},
			Endpoint{URL: &url.URL{Scheme: "http", Host: "localhost:9000", Path: "/d2"}, IsLocal: true},
			Endpoint{URL: &url.URL{Scheme: "http", Host: "localhost:9000", Path: "/d3"}, IsLocal: true},
			Endpoint{URL: &url.URL{Scheme: "http", Host: "localhost:9000", Path: "/d4"}, IsLocal: true},
		}, ErasureSetupType, nil},

Docker Compose allows defining and running single host, multi-container Docker applications.

	hosts := make([]string, len(records))
	for i, r := range records {
		hosts[i] = net.JoinHostPort(r.Host, string(r.Port))
	}
	return hosts
}

// returns an online host (and corresponding port) from a slice of DNS records
func getHostFromSrv(records []dns.SrvRecord) (host string) {
	hosts := getHostsSlice(records)
	rng := rand.New(rand.NewSource(time.Now().UTC().UnixNano()))
	var d net.Dialer

		{[]string{"example.org:65432"}, time.Duration(0), time.Duration(0), time.Duration(0), []bool{true}},                             // 2
		{[]string{"unknown-host"}, time.Duration(0), time.Duration(0), time.Duration(0), []bool{true}},                                  // 3
		{[]string{"unknown-host:65432"}, time.Duration(0), time.Duration(0), time.Duration(0), []bool{true}},                            // 4

		}
		if !enabled {
			continue
		}
		var brokers []xnet.Host
		kafkaBrokers := getCfgVal(EnvKafkaBrokers, k, kv.Get(KafkaBrokers))
		if len(kafkaBrokers) == 0 {
			return cfg, config.Errorf("kafka 'brokers' cannot be empty")
		}
		for s := range strings.SplitSeq(kafkaBrokers, config.ValueSeparator) {
			var host *xnet.Host
			host, err = xnet.ParseHost(s)
			if err != nil {
				break
			}

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_py39.py hl[2,6:8] *}

Os seguintes argumentos são suportados:

* <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Host" class="external-link" target="_blank">X-Forwarded-Host</a>

///

### Ativar headers encaminhados pelo proxy { #enable-proxy-forwarded-headers }

import okhttp3.testing.PlatformRule
import okhttp3.tls.HeldCertificate
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.RegisterExtension

/**
 * Tests for our hostname verifier. Most of these tests are from AOSP, which itself includes tests
 * from the Apache HTTP Client test suite.
 */
class HostnameVerifierTest {
  private val verifier = OkHostnameVerifier

  @RegisterExtension

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.