próprias sub-aplicações montadas e tudo funcionaria corretamente, porque o FastAPI lida com todos esses `root_path`s automaticamente.

Você aprenderá mais sobre o `root_path` e como usá-lo explicitamente na seção sobre [Atrás de um Proxy](behind-a-proxy.md){.internal-link target=_blank}....

rtifacts/docker/k8s-artifacts-prod/southamerica-east1/images/kube-proxy) | [amd64](https://console.cloud.google.com/artifacts/docker/k8s-artifacts-prod/southamerica-east1/images/kube-proxy-amd64), [arm64](https://console.cloud.google.com/artifacts/docker/k8s-artifacts-prod/southamerica-east1/images/kube-proxy-arm64), [ppc64le](https://console.cloud.google.com/artifacts/docker/k8s-artifacts-prod/southamerica-east1/images/kube-proxy-ppc64le), [s390x](https://console.cloud.google.com/artifacts/dock...

    val method = userResponse.request.method
    when (responseCode) {
      HTTP_PROXY_AUTH -> {
        val selectedProxy = route!!.proxy
        if (selectedProxy.type() != Proxy.Type.HTTP) {
          throw ProtocolException("Received HTTP_PROXY_AUTH (407) code while not using proxy")
        }
        return client.proxyAuthenticator.authenticate(route, userResponse)
      }

//console.cloud.google.com/gcr/images/k8s-artifacts-prod/us/kube-proxy) | [amd64](https://console.cloud.google.com/gcr/images/k8s-artifacts-prod/us/kube-proxy-amd64), [arm](https://console.cloud.google.com/gcr/images/k8s-artifacts-prod/us/kube-proxy-arm), [arm64](https://console.cloud.google.com/gcr/images/k8s-artifacts-prod/us/kube-proxy-arm64), [ppc64le](https://console.cloud.google.com/gcr/images/k8s-artifacts-prod/us/kube-proxy-ppc64le), [s390x](https://console.cloud.google.com/gcr/images/k8...

    }

    @Override
    Map<String, String> wrap(HashMap<String, String> map) {
      @SuppressWarnings("unchecked")
      Map<String, String> proxy =
          Reflection.newProxy(Map.class, new CheckSetUpInvocationHandler(map, setUpRan));
      return proxy;
    }
  }

  /**
   * Intercepts calls to a {@code Map} to check that {@code setUpRan} is true when they happen. Then

    this because it only occurs if you have proxy configured and you share a connection pool among
    multiple `OkHttpClient` instances.

    This particularly-subtle bug was caused by us assigning each `OkHttpClient` instance its own
    `NullProxySelector` when an explicit proxy is configured. But we don't share connections when
    the proxy selectors are different. Ugh!


## Version 4.2.0

        @Override
        public Authentication getAuthentication() {
            return null;
        }

        @Override
        public void setProxy(Proxy proxy) {}

        @Override
        public Proxy getProxy() {
            return null;
        }

        @Override
        public List<ArtifactRepository> getMirroredRepositories() {
            return Collections.emptyList();

    }

    @Override
    Map<String, String> wrap(HashMap<String, String> map) {
      @SuppressWarnings("unchecked")
      Map<String, String> proxy =
          Reflection.newProxy(Map.class, new CheckSetUpInvocationHandler(map, setUpRan));
      return proxy;
    }
  }

  /**
   * Intercepts calls to a {@code Map} to check that {@code setUpRan} is true when they happen. Then

		h.payloadType = ""
	} else {
		h.payloadType = "application/json"
	}

	// If proxy available, set the same
	if h.config.Proxy != "" {
		proxyURL, _ := url.Parse(h.config.Proxy)
		transport := h.config.Transport
		if tr, ok := transport.(*http.Transport); ok {
			ctransport := tr.Clone()
			ctransport.Proxy = http.ProxyURL(proxyURL)
			h.config.Transport = ctransport
		}
	}

{* ../../docs_src/header_params/tutorial002_an_py310.py hl[10] *}

/// warning | Achtung

Bevor Sie `convert_underscores` auf `False` setzen, bedenken Sie, dass manche HTTP-Proxys und Server die Verwendung von Headern mit Unterstrichen nicht erlauben.

///

## Doppelte Header { #duplicate-headers }