In OkHttp some fields of the address come from the URL (scheme, hostname, port) and the rest come from the [OkHttpClient](https://square.github.io/okhttp/4.x/okhttp/okhttp3/-ok-http-client/).

### [Routes](https://square.github.io/okhttp/4.x/okhttp/okhttp3/-route/)

{* ../../docs_src/openapi_callbacks/tutorial001.py hl[35] *}

/// tip

Notice that you are not passing the router itself (`invoices_callback_router`) to `callback=`, but the attribute `.routes`, as in `invoices_callback_router.routes`.

///

### Check the docs { #check-the-docs }

package okhttp3.internal.connection

import okhttp3.Route

/**
 * A denylist of failed routes to avoid when creating a new connection to a target address. This is
 * used so that OkHttp can learn from its mistakes: if there was a failure attempting to connect to
 * a specific IP address or proxy server, that failure is remembered and alternate routes are
 * preferred.
 */
class RouteDatabase {
  private val _failedRoutes = mutableSetOf<Route>()

            .body("Hello".toResponseBody())
            .header("Content-Encoding", "piedpiper")
            .build()
        }.build()

    val response = client.newCall(Request("https://google.com/robots.txt".toHttpUrl())).execute()

    assertThat(response.header("Content-Encoding")).isEqualTo("piedpiper")
    assertThat(response.body.string()).isEqualTo("Hello")
  }

  @Test
  fun gzipThroughCall() {

🔜 ⚙️ 🔢 `callbacks` *👆 🛠️ ➡ 🛠️ 👨‍🎨* 🚶‍♀️ 🔢 `.routes` (👈 🤙 `list` 🛣/*➡ 🛠️*) ⚪️➡️ 👈 ⏲ 📻:

{* ../../docs_src/openapi_callbacks/tutorial001.py hl[35] *}

/// tip

👀 👈 👆 🚫 🚶‍♀️ 📻 ⚫️ (`invoices_callback_router`) `callback=`, ✋️ 🔢 `.routes`, `invoices_callback_router.routes`.

///

### ✅ 🩺

  @Test
  fun testBasicAuth() {
    fakeDns["server"] = listOf(InetAddress.getLocalHost())

    val route = factory.newRoute()

    val request =
      Request
        .Builder()
        .url("https://server/robots.txt")
        .build()
    val response =
      Response
        .Builder()
        .request(request)
        .code(401)
        .header("WWW-Authenticate", "Basic realm=\"User Visible Realm\"")

		kmsRouter.Methods(http.MethodGet).Path(version + "/key/status").HandlerFunc(gz(httpTraceAll(kmsAPI.KMSKeyStatusHandler)))
	}

	// If none of the routes match add default error handler routes
	kmsRouter.NotFoundHandler = httpTraceAll(errorResponseHandler)
	kmsRouter.MethodNotAllowedHandler = httpTraceAll(methodNotAllowedHandler("KMS"))

    client.newCall(request).execute().use {
      assertThat(it.protocol).isEqualTo(Protocol.HTTP_2)
      assertThat(it.handshake!!.tlsVersion).isEqualTo(TlsVersion.TLS_1_3)
    }
  }

  @Test
  @Disabled
  fun testGoogle() {
    assumeNetwork()

    val request = Request.Builder().url("https://google.com/robots.txt").build()

                    request.setPath(dunc);
                }

                if (!t.getShare().equals(dr.getShare())) {
                    // this should only happen for standalone roots or if the DC/domain root lookup failed
                    IOException last;
                    final DfsReferralData start = dr;
                    do {
                        if (log.isDebugEnabled()) {

}

// removeRoots - Cleans up initialized directories during tests.
func removeRoots(roots []string) {
	for _, root := range roots {
		os.RemoveAll(root)
	}
}

// creates a bucket for the tests and returns the bucket name.
// initializes the specified API endpoints for the tests.
// initializes the root and returns its path.
// return credentials.