### Overview

- [istio-cni Helm chart](../manifests/charts/istio-cni/templates)
    - `install-cni` daemonset - main function is to install and help the node CNI, but it is also a proper server and interacts with K8S, watching Pods for recovery.
    - `istio-cni-config` configmap with CNI plugin config to add to CNI plugin chained config

        println("Response 2 network response:  ${it.networkResponse}")
        return@use it.body.string()
      }

    println("Response 2 equals Response 1? " + (response1Body == response2Body))
  }
}

fun main() {
  CacheResponse(File("CacheResponse.tmp")).run()

    try (Response response = client.newCall(request).execute()) {
      System.out.println(response.body().string());
    }

    server.shutdown();
    socketFile.delete();
  }

  public static void main(String... args) throws Exception {
    new ClientAndServer().run();
  }

```Python hl_lines="11  19"
{!../../docs_src/sub_applications/tutorial001.py!}
```

### Es in der automatischen API-Dokumentation betrachten

Führen Sie nun `uvicorn` mit der Hauptanwendung aus. Wenn Ihre Datei `main.py` lautet, wäre das:

<div class="termy">

```console
$ uvicorn main:app --reload

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

It will use the default status code or the one you set in your *path operation*.

## Additional status codes

If you want to return additional status codes apart from the main one, you can do that by returning a `Response` directly, like a `JSONResponse`, and set the additional status code directly.

import com.squareup.kotlinpoet.FileSpec
import com.squareup.kotlinpoet.KModifier
import com.squareup.kotlinpoet.PropertySpec
import java.io.File
import okio.FileSystem
import okio.Path.Companion.toPath

fun main(vararg args: String) {
  val data = loadIdnaMappingTableData()
  val file = generateMappingTableFile(data)
  file.writeTo(File(args[0]))
}

fun loadIdnaMappingTableData(): IdnaMappingTableData {

# This is the main configuration file for the application.
# ~~~~~

# Secret key
# ~~~~~
# The secret key is used to secure cryptographics functions.
#
# This must be changed for production, but we recommend not changing it in this file.
#
# See http://www.playframework.com/documentation/latest/ApplicationSecret for more details.
application.secret="0IQMdC<sFZR?TrOJg1AKDu=PL3p@XhQ_g4<PeoxaQMJf3^pwe<?yJvq;0tECs:@r"

# The application languages

									<em class="fa fa-fw fa-question-circle">
									<la:message key="labels.index_help" />
								</la:link></li>
						</ul>
					</div>
				</div>
			</nav>
		</header>

		<main id="content" class="container">
			<h2>
				<la:message key="labels.advance_search_title" />
			</h2>
			<div class="notification">${notification}</div>
			<div>
				<la:info id="msg" message="true">

                <mxCell id="15" value="&lt;span style=&quot;font-family: &amp;#34;roboto&amp;#34; ; font-size: 24px&quot;&gt;Module app.main&lt;/span&gt;&lt;br style=&quot;font-family: &amp;#34;roboto&amp;#34; ; font-size: 24px&quot;&gt;&lt;span style=&quot;font-family: &amp;#34;roboto&amp;#34; ; font-size: 24px&quot;&gt;app/main.py&lt;/span&gt;" style="shape=hexagon;perimeter=hexagonPerimeter2;whiteSpace=wrap;html=1;fixedSize=1;strokeWidth=3;" parent="1" vertex="1">

INFO:     Waiting for application startup.
INFO:     Application startup complete.
```

</div>

<details markdown="1">
<summary>About the command <code>fastapi dev main.py</code>...</summary>

The command `fastapi dev` reads your `main.py` file, detects the **FastAPI** app in it, and starts a server using <a href="https://www.uvicorn.org" class="external-link" target="_blank">Uvicorn</a>.