// Given: No addresses returned
        when(nameSvc.getAllByName(eq("unknown.host"), eq(true))).thenReturn(new Address[0]);

        // When/Then: Should throw UnknownHostException
        assertThrows(UnknownHostException.class, () -> pool.getSmbTransport(ctx, "unknown.host", 445, false, false));
    }

    @Test
    @DisplayName("Should throw last IOException when all connections fail")

  )

private fun requestUrl(
  socket: MockWebServerSocket,
  requestLine: RequestLine,
  headers: Headers,
): HttpUrl {
  val hostAndPort =
    headers[":authority"]
      ?: headers["Host"]
      ?: when (val inetAddress = socket.localAddress) {
        is Inet6Address -> "[${inetAddress.hostAddress}]:${socket.localPort}"
        else -> "${inetAddress.hostAddress}:${socket.localPort}"
      }

      throw failures.first()
    }
  }

  private fun testToAscii(
    input: String,
    output: String?,
    comment: String?,
  ) {
    val url = "https://$input/".toHttpUrlOrNull()
    assertThat(url?.host, name = comment ?: input).isEqualTo(output)
  }

Pero hay casos específicos donde es útil obtener el objeto `Request`.

## Usa el objeto `Request` directamente { #use-the-request-object-directly }

Imaginemos que quieres obtener la dirección IP/host del cliente dentro de tu *path operation function*.

Para eso necesitas acceder al request directamente.

{* ../../docs_src/using_request_directly/tutorial001_py310.py hl[1,7:8] *}

    get() = codec.carrier as? RealConnection ?: error("no connection for CONNECT tunnels")

  internal val isCoalescedConnection: Boolean
    get() = finder.routePlanner.address.url.host != codec.carrier.route.address.url.host

  @Throws(IOException::class)
  fun writeRequestHeaders(request: Request) {
    try {
      call.eventListener.requestHeadersStart(call)
      codec.writeRequestHeaders(request)

	entry := NewEntry(deploymentID)

	entry.RemoteHost = handlers.GetSourceIP(r)
	entry.UserAgent = r.UserAgent()
	entry.ReqClaims = reqClaims
	entry.ReqHost = r.Host
	entry.ReqPath = r.URL.Path

	q := r.URL.Query()
	reqQuery := make(map[string]string, len(q))
	for k, v := range q {
		reqQuery[k] = strings.Join(v, ",")
	}
	entry.ReqQuery = reqQuery

labels.pathmap_pt_both=Crawling/Displaying
labels.pathmap_pt_stored=Extracted URL Conversion
labels.regular_name=Regular Name
labels.duplicate_name=Duplicate Name
labels.duplicate_host_configuration=Duplicate Host
labels.duplicate_host_title_details=Duplicate Host
labels.dashboard_title_configuration=System Config
labels.dashboard_plugin=Dashboard Plugin
labels.web_config_list=Web Config List
labels.access_token_details=Access Token Details

### Remotely Inspecting backend data

* [X-Forwarded-Proto](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Proto)
* [X-Forwarded-Host](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-Host)

///

Nevertheless, as the **application server** doesn't know it is behind a trusted **proxy**, by default, it wouldn't trust those headers.

        @Test
        @DisplayName("Should fixup host for matching FQDN")
        void testFixupHostWithMatchingFQDN() {
            setupReferralWithServer("SERVER");

            referralData.fixupHost("server.example.com");

            assertEquals("server.example.com", referralData.getServer());
        }

        @Test
        @DisplayName("Should not fixup host for non-matching FQDN")