## Install the Server Program { #install-the-server-program }

When you install FastAPI, it comes with a production server, Uvicorn, and you can start it with the `fastapi run` command.

But you can also install an ASGI server manually.

Make sure you create a [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then you can install the server application.

  private val handshakeCertificates = platform.localhostHandshakeCertificates()

  @StartStop
  private val server = MockWebServer()

  @Test
  fun legalToExecuteTwiceCloning() {
    server.enqueue(MockResponse(body = "abc"))
    server.enqueue(MockResponse(body = "def"))

    val request = Request(server.url("/"))

    val call = client.newCall(request)
    val response1 = call.execute()

    val cloned = call.clone()

class InterceptorTest {
  @RegisterExtension
  val clientTestRule = OkHttpClientTestRule()

  @StartStop
  private val server = MockWebServer()

  private var client = clientTestRule.newClient()
  private val callback = RecordingCallback()

  @Test
  fun applicationInterceptorsCanShortCircuitResponses() {
    server.close() // Accept no connections.
    val request =
      Request
        .Builder()

        .build(),
    )
    server.enqueue(
      MockResponse
        .Builder()
        .code(HttpURLConnection.HTTP_MOVED_TEMP)
        .setHeader("Location", "/f")
        .headersDelay(100, TimeUnit.MILLISECONDS)
        .build(),
    )
    server.enqueue(MockResponse())
    val request =
      Request
        .Builder()
        .url(server.url("/a"))
        .build()

    assertThat(webSocket.receivedPongCount()).isEqualTo(0)
    assertThat(server.sentPingCount()).isEqualTo(0)
    assertThat(server.receivedPingCount()).isEqualTo(0)
    assertThat(server.receivedPongCount()).isEqualTo(0)
    closeWebSockets(webSocket, server)
  }

  /**
   * Configure the websocket to send pings every 500 ms. Artificially prevent the server from

    }

    upstream console {
        ip_hash;
        server minio1:9001;
        server minio2:9001;
        server minio3:9001;
        server minio4:9001;
        server minio5:9001;
        server minio6:9001;
        server minio7:9001;
        server minio8:9001;
    }

    server {
        listen       9000;
        listen  [::]:9000;
        server_name  localhost;

        requestWithPath.setFullUNCPath(domain, server, fullPath);

        verify(requestWithPath, times(1)).setFullUNCPath(domain, server, fullPath);

        // Test with implementation
        testImplementation.setFullUNCPath(domain, server, fullPath);
        assertEquals(domain, testImplementation.getDomain());
        assertEquals(server, testImplementation.getServer());

  }

  private fun trailers(protocol: Protocol) {
    enableProtocol(protocol)

    server.enqueue(
      MockResponse
        .Builder()
        .addHeader("h1", "v1")
        .trailers(headersOf("t1", "v2"))
        .body(protocol, "Hello")
        .build(),
    )

    val call = client.newCall(Request(server.url("/")))
    call.execute().use { response ->
      val source = response.body.source()

    }

    /**
     * Returns the server address.
     * @return The server address.
     */
    public String getServer() {
        return server;
    }

    /**
     * Sets the server address.
     * @param server The server address.
     */
    public void setServer(final String server) {
        this.server = server;
    }

    /**
     * Returns the port number.

        ).build()
    server.useHttps(serverHandshakeCertificates.sslSocketFactory())
    server.enqueue(MockResponse())

    // Make a request from client to server. It should succeed certificate checks (unfortunately the
    // rogue CA is trusted) but it should fail certificate pinning.
    val request =
      Request
        .Builder()
        .url(server.url("/"))
        .build()