length: Int,
    flags: Int,
    streamId: Int,
  ) {
    if (length != 8) throw IOException("TYPE_PING length != 8: $length")
    if (streamId != 0) throw IOException("TYPE_PING streamId != 0")
    val payload1 = source.readInt()
    val payload2 = source.readInt()
    val ack = flags and FLAG_ACK != 0
    handler.ping(ack, payload1, payload2)
  }

  @Throws(IOException::class)
  private fun readGoAway(

      val source = this.source!!
      val sink = this.sink!!
      val tunnelCodec =
        Http1ExchangeCodec(
          // No client for CONNECT tunnels:
          client = null,
          carrier = this,
          source = source,
          sink = sink,
        )
      source.timeout().timeout(readTimeoutMillis.toLong(), TimeUnit.MILLISECONDS)

 *       recommend using our {@link VerifyException} exception type. Throwing a plain {@link
 *       RuntimeException} is frowned upon.
 *   <li>Use of {@link java.util.Objects#requireNonNull(Object)} is generally discouraged, since
 *       {@link #verifyNotNull(Object)} and {@link Preconditions#checkNotNull(Object)} perform the
 *       same function with more clarity.
 * </ul>
 *

 *       recommend using our {@link VerifyException} exception type. Throwing a plain {@link
 *       RuntimeException} is frowned upon.
 *   <li>Use of {@link java.util.Objects#requireNonNull(Object)} is generally discouraged, since
 *       {@link #verifyNotNull(Object)} and {@link Preconditions#checkNotNull(Object)} perform the
 *       same function with more clarity.
 * </ul>
 *

import java.math.RoundingMode;
import java.util.Arrays;
import java.util.Collection;
import java.util.Map;

/**
 * Enumerates several algorithms providing equivalent functionality to {@link Quantiles}, for use in
 * {@link QuantilesBenchmark}. These algorithms each calculate either a single quantile or multiple
 * quantiles. All algorithms modify the dataset they are given (the cost of a copy to avoid this

import java.math.RoundingMode;
import java.util.Arrays;
import java.util.Collection;
import java.util.Map;

/**
 * Enumerates several algorithms providing equivalent functionality to {@link Quantiles}, for use in
 * {@link QuantilesBenchmark}. These algorithms each calculate either a single quantile or multiple
 * quantiles. All algorithms modify the dataset they are given (the cost of a copy to avoid this

      return false;
    }
    return true;
  }

  /** Strategy for exception type matching used by {@link NullPointerTester}. */
  private enum ExceptionTypePolicy {

    /**
     * Exceptions should be {@link NullPointerException} or {@link UnsupportedOperationException}.
     */
    NPE_OR_UOE() {
      @Override
      public boolean isExpectedType(Throwable cause) {

Starlette (and **FastAPI**) are based on <a href="https://anyio.readthedocs.io/en/stable/" class="external-link" target="_blank">AnyIO</a>, which makes it compatible with both Python's standard library <a href="https://docs.python.org/3/library/asyncio-task.html" class="external-link" target="_blank">asyncio</a> and <a href="https://trio.readthedocs.io/en/stable/" class="external-link" target="_blank">Trio</a>.

    synchronized(this) {
      this.name = name
      this.streams = streams
      this.writer =
        WebSocketWriter(
          isClient = streams.client,
          sink = streams.sink,
          random = random,
          perMessageDeflate = extensions.perMessageDeflate,
          noContextTakeover = extensions.noContextTakeover(streams.client),
          minimumDeflateSize = minimumDeflateSize,

import org.checkerframework.checker.nullness.qual.Nullable;

/**
 * Implementation of {@code Futures#withTimeout}.
 *
 * <p>Future that delegates to another but will finish early (via a {@link TimeoutException} wrapped
 * in an {@link ExecutionException}) if the specified duration expires. The delegate future is
 * interrupted and cancelled if it times out.
 */
@J2ktIncompatible
@GwtIncompatible
@ElementTypesAreNonnullByDefault