}
      if (this.connection == null) {
        toClose?.closeQuietly()
        eventListener.connectionReleased(this, connection)
        connection.connectionListener.connectionReleased(connection, this)
        if (toClose != null) {
          connection.connectionListener.connectionClosed(connection)
        }
      } else {
        check(toClose == null) // If we still have a connection we shouldn't be closing any sockets.

  private val javaNetSocket: JavaNetSocket,
  private val handshake: Handshake?,
  private val protocol: Protocol,
  private val socket: BufferedSocket,
  private val pingIntervalMillis: Int,
  internal val connectionListener: ConnectionListener,
) : Http2Connection.Listener(),
  Connection,
  ExchangeCodec.Carrier,
  Lockable {
  private var http2Connection: Http2Connection? = null

  // These properties are guarded by `this`.

  /**

          javaNetSocket = javaNetSocket!!,
          handshake = handshake,
          protocol = protocol!!,
          socket = socket,
          pingIntervalMillis = pingIntervalMillis,
          connectionListener = connectionPool.connectionListener,
        )
      this.connection = connection
      connection.start()

      // Success.
      user.callConnectEnd(route, protocol)
      success = true