" cipherSuite=${handshake?.cipherSuite ?: "none"}" +
      " protocol=$protocol}"

  companion object {
    const val IDLE_CONNECTION_HEALTHY_NS = 10_000_000_000 // 10 seconds.

    fun newTestConnection(
      taskRunner: TaskRunner,
      connectionPool: RealConnectionPool,
      route: Route,
      socket: JavaNetSocket,
      idleAtNs: Long,
    ): RealConnection {
      val bufferedSocket =