[providers]
  [providers.file]
    filename = "routes.toml"
```

Dadurch wird Traefik angewiesen, Port 9999 abzuhören und eine andere Datei `routes.toml` zu verwenden.

/// tip | Tipp

Wir verwenden Port 9999 anstelle des Standard-HTTP-Ports 80, damit Sie ihn nicht mit Administratorrechten (`sudo`) ausführen müssen.

///

Erstellen Sie nun die andere Datei `routes.toml`:

```TOML hl_lines="5  12  20"
[http]

    "{$callback_url}/invoices/{$request.body.id}", response_model=InvoiceEventReceived
)
def invoice_notification(body: InvoiceEvent):
    pass


@app.post("/invoices/", callbacks=invoices_callback_router.routes)
def create_invoice(invoice: Invoice, callback_url: HttpUrl | None = None):
    """
    Create an invoice.

    This will (let's imagine) let the API user (some external developer) create an
    invoice.

@RunWith(AndroidJUnit4.class)
public class OkHttpClientTest {
  @Test public void get() throws IOException {
    OkHttpClient client = new OkHttpClient();
    Request request = new Request.Builder()
        .url("https://google.com/robots.txt")
        .build();
    try (Response response = client.newCall(request).execute()) {
      assertEquals(200, response.code());
      assertEquals(Protocol.HTTP_2, response.protocol());
    }
  }

     *       to the root of the output directory (see {@link Project#getOutputDirectory(ProjectScope)}).</li>
     *   <li><strong>Relative Path</strong> (e.g., {@code Path.of("META-INF/resources")}) - The path is
     *       intended to be resolved relative to the output directory for this source root's {@link #scope()}.
     *       <ul>

 */
class PublicSuffixDatabaseTest {
  @Test
  fun testTopLevelDomain() {
    assertThat("https://www.google.com/robots.txt".toHttpUrl().topPrivateDomain()).isEqualTo("google.com")
  }

      useHttps(handshakeCertificates.sslSocketFactory(), false)

      enqueue(
        MockResponse()
          .setResponseCode(HTTP_MOVED_TEMP)
          .setHeader("Location", "https://www.google.com/robots.txt"),
      )
    }

  val clientCertificates =
    HandshakeCertificates
      .Builder()
      .addPlatformTrustedCertificates()
      .addInsecureHost(server.hostName)
      .build()

            .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() {

	sconfig.Net.TLS.Config = tlsConfig
	sconfig.Net.TLS.Config.InsecureSkipVerify = h.kconfig.TLS.SkipVerify
	sconfig.Net.TLS.Config.ClientAuth = h.kconfig.TLS.ClientAuth
	sconfig.Net.TLS.Config.RootCAs = h.kconfig.TLS.RootCAs

	// These settings are needed to ensure that kafka client doesn't hang on brokers
	// refer https://github.com/IBM/sarama/issues/765#issuecomment-254333355
	sconfig.Producer.Retry.Max = 2

@RunWith(AndroidJUnit4.class)
public class IssueReproductionTest {
  @Test public void getFailsWithoutAdditionalCert() throws IOException {
    OkHttpClient client = new OkHttpClient();

    sendRequest(client, "https://google.com/robots.txt");
  }

  private void sendRequest(OkHttpClient client, String url) throws IOException {
    Request request = new Request.Builder()
            .url(url)
            .build();

    response = client.get("/users/")
    assert response.status_code == 200, response.text
    assert response.json() == ["Rick", "Morty"]


def test_dummy_webhook():
    # Just for coverage
    app.webhooks.routes[0].endpoint({})


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json() == {
        "openapi": "3.1.0",