checkForTimeoutError(t, err)
	if _, err := c1.Write(make([]byte, 1024)); err != nil {
		t.Errorf("unexpected Write error: %v", err)
	}
}

// testWriteTimeout tests that Write timeouts do not affect Read.
func testWriteTimeout(t *testing.T, c1, c2 net.Conn) {
	go chunkedCopy(c2, rand.New(rand.NewSource(0)))

	c1.SetWriteDeadline(aLongTimeAgo)
	_, err := c1.Write(make([]byte, 1024))