Request(
      url = server.url("/"),
      headers =
        headersOf(
          "Connection",
          "upgrade",
        ),
    )

  private fun MockSocketHandler.upgradeResponse() =
    MockResponse
      .Builder()
      .code(HTTP_SWITCHING_PROTOCOLS)
      .addHeader("Connection", "upgrade")
      .socketHandler(this)
      .build()

    }
  }

  /**
   * This test reproduces a crash where OkHttp attempted to use a deferred connection when the call
   * already had a healthy connection. It sets up a deferred connection by stalling the IPv6
   * connect, and it sets up a same-connection retry with [ErrorCode.REFUSED_STREAM].
   *
   * https://github.com/square/okhttp/pull/7190
   */
  @Test

      printEvent("connectFailed");
    }

    @Override public void connectionAcquired(Call call, Connection connection) {
      printEvent("connectionAcquired");
    }

    @Override public void connectionReleased(Call call, Connection connection) {
      printEvent("connectionReleased");
    }

    @Override public void requestHeadersStart(Call call) {
      printEvent("requestHeadersStart");
    }

  ) {
    logWithTime("connectFailed: $protocol $ioe")
  }

  override fun connectionAcquired(
    call: Call,
    connection: Connection,
  ) {
    logWithTime("connectionAcquired: $connection")
  }

  override fun connectionReleased(
    call: Call,
    connection: Connection,
  ) {
    logWithTime("connectionReleased")
  }

  override fun requestHeadersStart(call: Call) {

 *
 *  4. If there's no existing connection, make a list of routes (which may require blocking DNS
 *     lookups) and attempt new connections to them. When failures occur, retries iterate the
 *     list of available routes.
 *
 * If the pool gains an eligible connection while DNS, TCP, or TLS work is in flight, this finder
 * will prefer pooled connections. Only pooled HTTP/2 connections are used for such de-duplication.
 *

            info.reconnecting = true;
            return info;
        }
        return null;
    }
    
    public void completeReconnect(String path, boolean success) {
        HandleInfo info = handles.get(path);
        if (info != null) {
            if (success) {
                info.updateAccessTime();
                info.reconnecting = false;
            } else {

  )

  override fun connectEnd(
    connection: Connection,
    route: Route,
    call: Call,
  ) {
    logEvent(ConnectionEvent.ConnectEnd(System.nanoTime(), connection, route, call))
  }

  override fun connectionClosed(connection: Connection) = logEvent(ConnectionEvent.ConnectionClosed(System.nanoTime(), connection))

  override fun connectionAcquired(

        private final List<HttpURLConnection> connections = new ArrayList<>();
        private int currentIndex = 0;

        void addConnection(HttpURLConnection conn) {
            connections.add(conn);
        }

        @Override
        protected URLConnection openConnection(URL u) throws IOException {
            if (currentIndex < connections.size()) {
                return connections.get(currentIndex++);

import okhttp3.internal.isHealthy
import okhttp3.internal.tls.OkHostnameVerifier
import okio.Buffer

/**
 * A connection to a remote web server capable of carrying 1 or more concurrent streams.
 *
 * Connections are shared in a connection pool. Accesses to the connection's state must be guarded
 * by holding a lock on the connection.
 */
class RealConnection internal constructor(
  val taskRunner: TaskRunner,

    /**
     * Creates a new NTLM HTTP URL connection that wraps an existing HTTP connection.
     *
     * @param connection
     *            connection to wrap
     * @param tc
     *            context to use
     */
    public NtlmHttpURLConnection(final HttpURLConnection connection, final CIFSContext tc) {
        super(connection.getURL());
        this.connection = connection;
        this.transportContext = tc;