And you want to have a way for the frontend to authenticate with the backend, using a **username** and **password**.

We can use **OAuth2** to build that with **FastAPI**.

But let's save you the time of reading the full long specification just to find those little pieces of information you need.

Let's use the tools provided by **FastAPI** to handle security.

## How it looks { #how-it-looks }

 */
interface CookieJar {
  /**
   * Saves [cookies] from an HTTP response to this store according to this jar's policy.
   *
   * Note that this method may be called a second time for a single HTTP response if the response
   * includes a trailer. For this obscure HTTP feature, [cookies] contains only the trailer's
   * cookies.
   */
  fun saveFromResponse(
    url: HttpUrl,

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

/**
 * Provides tools for processing Maven dependency injection annotations at compile time.
 * <p>
 * This package contains annotation processors that generate metadata files used by
 * the Maven dependency injection system. The main component is the {@link org.apache.maven.di.tool.DiIndexProcessor},

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.opensearch.log.allcommon;

import java.text.SimpleDateFormat;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Date;
import java.util.List;
import java.util.TimeZone;

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.opensearch.config.allcommon;

import java.text.SimpleDateFormat;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Date;
import java.util.List;
import java.util.TimeZone;

  }

  /**
   * This test attempts to cause a future to wait for longer than it was requested to from a timed
   * get() call. As measurements of time are prone to flakiness, it tries to assert based on ranges
   * derived from observing how much time actually passed for various operations.
   */
  @SuppressWarnings("ThreadPriorityCheck")
  @AndroidIncompatible // Thread.suspend

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

import java.io.IOException

/** Attempt routes one at a time until one connects. */
internal class SequentialExchangeFinder(
  override val routePlanner: RoutePlanner,
) : ExchangeFinder {
  override fun find(): RealConnection {
    var firstException: IOException? = null

  public synchronized void awaitAccessToken(Timeout timeout) throws InterruptedIOException {
    while (session == null) {
      timeout.waitUntilNotified(this);
    }
  }

  /** Starts a real time messaging session. */
  public void startRtm() throws IOException {
    String accessToken;
    synchronized (this) {
      accessToken = session.access_token;
    }

 * limitations under the License.
 */
package okhttp3

import assertk.assertThat
import assertk.assertions.containsExactly
import assertk.assertions.isEqualTo
import assertk.assertions.isNull
import java.time.Instant
import java.util.Date
import okhttp3.Headers.Companion.headersOf
import org.junit.jupiter.api.Test

class HeadersKotlinTest {
  @Test fun getOperator() {
    val headers = headersOf("a", "b", "c", "d")

    durabilityHint('PERFORMANCE_OPTIMIZED')
    disableRestartFromStage()
  }
  stages {
    stage("Build / Test - JDK17") {
      agent { node { label 'ubuntu' } }
      steps {
        timeout(time: 210, unit: 'MINUTES') {
          checkout scm
          mavenBuild("jdk_17_latest", "")
          script {