fun build(): DnsOverHttps {
      val client = this.client ?: throw NullPointerException("client not set")
      return DnsOverHttps(
        client.newBuilder().dns(buildBootstrapClient(this)).build(),
        checkNotNull(url) { "url not set" },
        includeIPv6,
        post,
        resolvePrivateAddresses,
        resolvePublicAddresses,
      )
    }

    fun client(client: OkHttpClient) =
      apply {

# WebSockets

When defining WebSockets, you normally declare a parameter of type `WebSocket` and with it you can read data from the client and send data to it.

It is provided directly by Starlette, but you can import it from `fastapi`:

```python
from fastapi import WebSocket
```

/// tip

### Client Binaries

filename | sha512 hash
-------- | -----------
[kubernetes-client-darwin-amd64.tar.gz](https://dl.k8s.io/v1.24.17/kubernetes-client-darwin-amd64.tar.gz) | 09374af750a0bbc839844a9e70ac3e8f7572dfd4fbb10c13a3b13d6ff2012790afb0b92dac2bf52882fe822ae3de7c4d65a0b64f17c74ca1d12c88657fed3f7b

class SampleTest {
  private val server = MockWebServer()

  private val client = OkHttpClient()

  @Test
  fun passingTest() {
    assertThat("hello").isEqualTo("hello")
  }

  @Test
  fun testMockWebServer() {
    server.enqueue(MockResponse(body = "abc"))
    server.start()

    client.newCall(Request(url = server.url("/"))).execute().use {
      assertThat(it.body.string()).isEqualTo("abc")

 *    root certificates that is distributed with the HTTP client or its platform. It may be
 *    augmented by certificates private to an organization or service.
 *
 * ### Client Authentication
 *
 * This is authentication of the client by the server during the TLS handshake. Client
 * authentication is optional.
 *
 * To perform client authentication:
 *

import java.util.Arrays;

import jcifs.CIFSContext;

/**
 * This class stores and encrypts NTLM user credentials. The default
 * credentials are retrieved from the {@code jcifs.smb.client.domain},
 * {@code jcifs.smb.client.username}, and {@code jcifs.smb.client.password}
 * properties.
 * <p>
 * Read <a href="../../../authhandler.html">jCIFS Exceptions and
 * NtlmAuthenticator</a> for related information.
 *

import okhttp3.Protocol
import okhttp3.Request

object ExternalHttp2Example {
  @JvmStatic
  fun main(args: Array<String>) {
    val client =
      OkHttpClient
        .Builder()
        .protocols(listOf(Protocol.HTTP_2, Protocol.HTTP_1_1))
        .build()
    val call =
      client.newCall(
        Request
          .Builder()
          .url("https://www.google.ca/")
          .build(),
      )

        byte[] server = hex("0102030405060708");
        byte[] client = hex("FEEDFACECAFEBEEF");

        // Act
        byte[] expected = NtlmUtil.computeResponse(key, server, client, 0, client.length);
        byte[] actual = NtlmUtil.getLMv2Response(key, server, client);

        // Assert
        assertArrayEquals(expected, actual);
    }

    @Test

    }

    /**
     * Creates a new witness client with a custom RPC client (for testing).
     *
     * @param witnessServer the witness server address
     * @param context the CIFS context
     * @param rpcClient the RPC client to use
     */
    protected WitnessClient(InetAddress witnessServer, CIFSContext context, WitnessRpcClient rpcClient) {

### Client Binaries

filename | sha512 hash
-------- | -----------
[kubernetes-client-darwin-amd64.tar.gz](https://dl.k8s.io/v1.19.16/kubernetes-client-darwin-amd64.tar.gz) | 1c90e3e01b345f70ca94c7e89c6a10dab5ed2623b4f66674aefbcdae7a857cb240f39b9f84447e37c4dba815ce10aa648620cb268246261af1cbae5c080aeff4