deadline := time.Now().Add(time.Hour)
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		c.SetReadDeadline(deadline)
		deadline = deadline.Add(1)
	}
}

func TestDialTCPDefaultKeepAlive(t *testing.T) {
	ln := newLocalListener(t, "tcp")
	defer ln.Close()

	got := time.Duration(-1)
	testHookSetKeepAlive = func(cfg KeepAliveConfig) { got = cfg.Idle }