# HTTP Basic Auth { #http-basic-auth }

Para los casos más simples, puedes usar HTTP Basic Auth.

En HTTP Basic Auth, la aplicación espera un header que contiene un nombre de usuario y una contraseña.

Si no lo recibe, devuelve un error HTTP 401 "Unauthorized".

Y devuelve un header `WWW-Authenticate` con un valor de `Basic`, y un parámetro `realm` opcional.

Eso le dice al navegador que muestre el prompt integrado para un nombre de usuario y contraseña.

import javax.net.ssl.SSLSocket
import okhttp3.Address
import okhttp3.Connection
import okhttp3.Handshake
import okhttp3.HttpUrl
import okhttp3.OkHttpClient
import okhttp3.Protocol
import okhttp3.Route
import okhttp3.internal.closeQuietly
import okhttp3.internal.concurrent.Lockable
import okhttp3.internal.concurrent.TaskRunner
import okhttp3.internal.concurrent.assertLockHeld
import okhttp3.internal.concurrent.assertLockNotHeld

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.recipes.kt

import java.io.IOException
import okhttp3.Authenticator
import okhttp3.Credentials
import okhttp3.OkHttpClient
import okhttp3.Request
import okhttp3.Response
import okhttp3.Route

class Authenticate {
  private val client =
    OkHttpClient
      .Builder()
      .authenticator(

 * limitations under the License.
 */
package okhttp3.dnsoverhttps

import java.io.IOException
import java.net.InetAddress
import java.net.UnknownHostException
import java.util.concurrent.CountDownLatch
import okhttp3.Call
import okhttp3.Callback
import okhttp3.Dns
import okhttp3.HttpUrl
import okhttp3.MediaType
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.OkHttpClient
import okhttp3.Protocol

 * limitations under the License.
 */
package okhttp3.recipes;

import java.io.IOException;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Headers;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
import okhttp3.ResponseBody;

public final class AsynchronousGet {
  private final OkHttpClient client = new OkHttpClient();

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.squareup.okhttp3.maventest;

import java.io.IOException;

import okhttp3.Headers;
import okhttp3.HttpUrl;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

public class SampleHttpClient {
  private final OkHttpClient client;

  public SampleHttpClient() {

# HTTP 基础授权 { #http-basic-auth }

最简单的用例是使用 HTTP 基础授权（HTTP Basic Auth）。

在 HTTP 基础授权中，应用需要请求头包含用户名与密码。

如果没有接收到 HTTP 基础授权，就返回 HTTP 401 `"Unauthorized"` 错误。

并返回响应头 `WWW-Authenticate`，其值为 `Basic`，以及可选的 `realm` 参数。

HTTP 基础授权让浏览器显示内置的用户名与密码提示。

输入用户名与密码后，浏览器会把它们自动发送至请求头。

## 简单的 HTTP 基础授权 { #simple-http-basic-auth }

* 导入 `HTTPBasic` 与 `HTTPBasicCredentials`
* 使用 `HTTPBasic` 创建**安全方案**
* 在*路径操作*的依赖项中使用 `security`

 */
package okhttp3.recipes;

import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.util.List;
import java.util.concurrent.atomic.AtomicLong;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Connection;
import okhttp3.EventListener;
import okhttp3.Handshake;
import okhttp3.HttpUrl;
import okhttp3.OkHttpClient;

 * limitations under the License.
 */
package okhttp3.sse.internal

import java.io.IOException
import okhttp3.Call
import okhttp3.Callback
import okhttp3.Request
import okhttp3.Response
import okhttp3.ResponseBody
import okhttp3.internal.stripBody
import okhttp3.sse.EventSource
import okhttp3.sse.EventSourceListener

internal class RealEventSource(
  private val request: Request,

import okhttp3.internal.connection.RealCall
import okhttp3.internal.discard
import okhttp3.internal.http.ExchangeCodec
import okhttp3.internal.http.HttpMethod
import okhttp3.internal.http.RealResponseBody
import okhttp3.internal.http.promisesBody
import okhttp3.internal.stripBody
import okio.Buffer
import okio.Source
import okio.Timeout
import okio.buffer

/** Serves requests from the cache and writes responses to the cache. */