diff --git a/nbhttp/tests/poller_test.go b/nbhttp/tests/poller_test.go
deleted file mode 100644
index 7513f420..00000000
--- a/nbhttp/tests/poller_test.go
+++ /dev/null
@@ -1,206 +0,0 @@
-//go:build !unit
-// +build !unit
-
-// run this test via :go test -tags=integration .
-
-package nbhttp
-
-import (
-	"context"
-	"fmt"
-	"log"
-	"net/http"
-	"net/url"
-	"sync"
-	"testing"
-	"time"
-
-	"github.com/lesismal/llib/std/crypto/tls"
-	"github.com/lesismal/nbio/nbhttp"
-	"github.com/lesismal/nbio/nbhttp/websocket"
-)
-
-var (
-	count  = 3
-	chWait = make(chan struct{}, count)
-	text   = "hello world"
-	addr   = "localhost:8889"
-
-	engine *nbhttp.Engine
-)
-
-func onWebsocket(w http.ResponseWriter, r *http.Request) {
-	upgrader := websocket.NewUpgrader()
-	upgrader.OnMessage(func(c *websocket.Conn, messageType websocket.MessageType, data []byte) {
-		c.WriteMessage(messageType, data)
-		c.SetReadDeadline(time.Now().Add(nbhttp.DefaultKeepaliveTime))
-	})
-	upgrader.OnClose(func(c *websocket.Conn, err error) {
-		fmt.Println("OnClose:", c.RemoteAddr().String(), err)
-	})
-	conn, err := upgrader.Upgrade(w, r, nil)
-	if err != nil {
-		panic(err)
-	}
-	wsConn := conn.(*websocket.Conn)
-	fmt.Println("OnOpen:", wsConn.RemoteAddr().String())
-}
-
-func server(ctx context.Context, started *sync.WaitGroup, startupError *error) {
-	cert, err := tls.X509KeyPair(rsaCertPEM, rsaKeyPEM)
-	if err != nil {
-		log.Fatalf("tls.X509KeyPair failed: %v", err)
-	}
-	tlsConfig := &tls.Config{
-		Certificates:       []tls.Certificate{cert},
-		InsecureSkipVerify: true,
-	}
-
-	mux := &http.ServeMux{}
-	mux.HandleFunc("/wss", onWebsocket)
-
-	engine = nbhttp.NewEngine(nbhttp.Config{
-		Network:   "tcp",
-		AddrsTLS:  []string{addr},
-		TLSConfig: tlsConfig,
-		Handler:   mux,
-	})
-
-	err = engine.Start()
-	if err != nil {
-		fmt.Printf("nbio.Start failed: %v\n", err)
-		*startupError = err
-		started.Done()
-		return
-	}
-	started.Done()
-	defer engine.Stop()
-
-	<-ctx.Done()
-	log.Println("exit")
-}
-
-func client() error {
-	u := url.URL{Scheme: "wss", Host: addr, Path: "/wss"}
-	log.Printf("connecting to %s", u.String())
-
-	// engine := nbhttp.NewEngine(nbhttp.Config{
-	// 	TLSConfig: ,
-	// })
-	// err := engine.Start()
-	// if err != nil {
-	// 	fmt.Printf("nbio.Start failed: %v\n", err)
-	// 	return err
-	// }
-
-	dialer := &websocket.Dialer{
-		Engine: engine,
-		Upgrader: func() *websocket.Upgrader {
-			u := websocket.NewUpgrader()
-			u.OnMessage(func(c *websocket.Conn, messageType websocket.MessageType, data []byte) {
-				c.WriteMessage(messageType, data)
-				chWait <- struct{}{}
-			})
-			return u
-		}(),
-		DialTimeout: time.Second * 3,
-		TLSClientConfig: &tls.Config{
-			InsecureSkipVerify: true,
-		},
-	}
-
-	c, res, err := dialer.Dial(u.String(), nil)
-	if err != nil {
-		log.Fatal("dial:", err)
-	}
-	if res.Body != nil {
-		res.Body.Close()
-	}
-	defer c.Close()
-
-	err = c.WriteMessage(websocket.TextMessage, []byte(text))
-	if err != nil {
-		log.Fatalf("write: %v", err)
-		return err
-	}
-
-	for i := 0; i < count; i++ {
-		<-chWait
-	}
-
-	return nil
-}
-func TestServerSimulation(t *testing.T) {
-	waitGrp := sync.WaitGroup{}
-	ctx, cancelFunc := context.WithCancel(context.Background())
-	waitGrp.Add(1)
-	var err error
-	go server(ctx, &waitGrp, &err)
-	waitGrp.Wait()
-	if err != nil {
-		t.Errorf("client should not have errorred: %s", err)
-		cancelFunc()
-		return
-	}
-	err = client()
-	if err != nil {
-		t.Errorf("client should not have errorred: %s", err)
-	}
-	err = client()
-	if err != nil {
-		t.Errorf("client should not have errorred: %s", err)
-	}
-	cancelFunc()
-}
-
-var rsaCertPEM = []byte(`-----BEGIN CERTIFICATE-----
-MIIDazCCAlOgAwIBAgIUJeohtgk8nnt8ofratXJg7kUJsI4wDQYJKoZIhvcNAQEL
-BQAwRTELMAkGA1UEBhMCQVUxEzARBgNVBAgMClNvbWUtU3RhdGUxITAfBgNVBAoM
-GEludGVybmV0IFdpZGdpdHMgUHR5IEx0ZDAeFw0yMDEyMDcwODIyNThaFw0zMDEy
-MDUwODIyNThaMEUxCzAJBgNVBAYTAkFVMRMwEQYDVQQIDApTb21lLVN0YXRlMSEw
-HwYDVQQKDBhJbnRlcm5ldCBXaWRnaXRzIFB0eSBMdGQwggEiMA0GCSqGSIb3DQEB
-AQUAA4IBDwAwggEKAoIBAQCy+ZrIvwwiZv4bPmvKx/637ltZLwfgh3ouiEaTchGu
-IQltthkqINHxFBqqJg44TUGHWthlrq6moQuKnWNjIsEc6wSD1df43NWBLgdxbPP0
-x4tAH9pIJU7TQqbznjDBhzRbUjVXBIcn7bNknY2+5t784pPF9H1v7h8GqTWpNH9l
-cz/v+snoqm9HC+qlsFLa4A3X9l5v05F1uoBfUALlP6bWyjHAfctpiJkoB9Yw1TJa
-gpq7E50kfttwfKNkkAZIbib10HugkMoQJAs2EsGkje98druIl8IXmuvBIF6nZHuM
-lt3UIZjS9RwPPLXhRHt1P0mR7BoBcOjiHgtSEs7Wk+j7AgMBAAGjUzBRMB0GA1Ud
-DgQWBBQdheJv73XSOhgMQtkwdYPnfO02+TAfBgNVHSMEGDAWgBQdheJv73XSOhgM
-QtkwdYPnfO02+TAPBgNVHRMBAf8EBTADAQH/MA0GCSqGSIb3DQEBCwUAA4IBAQBf
-SKVNMdmBpD9m53kCrguo9iKQqmhnI0WLkpdWszc/vBgtpOE5ENOfHGAufHZve871
-2fzTXrgR0TF6UZWsQOqCm5Oh3URsCdXWewVMKgJ3DCii6QJ0MnhSFt6+xZE9C6Hi
-WhcywgdR8t/JXKDam6miohW8Rum/IZo5HK9Jz/R9icKDGumcqoaPj/ONvY4EUwgB
-irKKB7YgFogBmCtgi30beLVkXgk0GEcAf19lHHtX2Pv/lh3m34li1C9eBm1ca3kk
-M2tcQtm1G89NROEjcG92cg+GX3GiWIjbI0jD1wnVy2LCOXMgOVbKfGfVKISFt0b1
-DNn00G8C6ttLoGU2snyk
------END CERTIFICATE-----
-`)
-
-var rsaKeyPEM = []byte(`-----BEGIN RSA PRIVATE KEY-----
-MIIEogIBAAKCAQEAsvmayL8MImb+Gz5rysf+t+5bWS8H4Id6LohGk3IRriEJbbYZ
-KiDR8RQaqiYOOE1Bh1rYZa6upqELip1jYyLBHOsEg9XX+NzVgS4HcWzz9MeLQB/a
-SCVO00Km854wwYc0W1I1VwSHJ+2zZJ2Nvube/OKTxfR9b+4fBqk1qTR/ZXM/7/rJ
-6KpvRwvqpbBS2uAN1/Zeb9ORdbqAX1AC5T+m1soxwH3LaYiZKAfWMNUyWoKauxOd
-JH7bcHyjZJAGSG4m9dB7oJDKECQLNhLBpI3vfHa7iJfCF5rrwSBep2R7jJbd1CGY
-0vUcDzy14UR7dT9JkewaAXDo4h4LUhLO1pPo+wIDAQABAoIBAF6yWwekrlL1k7Xu
-jTI6J7hCUesaS1yt0iQUzuLtFBXCPS7jjuUPgIXCUWl9wUBhAC8SDjWe+6IGzAiH
-xjKKDQuz/iuTVjbDAeTb6exF7b6yZieDswdBVjfJqHR2Wu3LEBTRpo9oQesKhkTS
-aFF97rZ3XCD9f/FdWOU5Wr8wm8edFK0zGsZ2N6r57yf1N6ocKlGBLBZ0v1Sc5ShV
-1PVAxeephQvwL5DrOgkArnuAzwRXwJQG78L0aldWY2q6xABQZQb5+ml7H/kyytef
-i+uGo3jHKepVALHmdpCGr9Yv+yCElup+ekv6cPy8qcmMBqGMISL1i1FEONxLcKWp
-GEJi6QECgYEA3ZPGMdUm3f2spdHn3C+/+xskQpz6efiPYpnqFys2TZD7j5OOnpcP
-ftNokA5oEgETg9ExJQ8aOCykseDc/abHerYyGw6SQxmDbyBLmkZmp9O3iMv2N8Pb
-Nrn9kQKSr6LXZ3gXzlrDvvRoYUlfWuLSxF4b4PYifkA5AfsdiKkj+5sCgYEAzseF
-XDTRKHHJnzxZDDdHQcwA0G9agsNj64BGUEjsAGmDiDyqOZnIjDLRt0O2X3oiIE5S
-TXySSEiIkxjfErVJMumLaIwqVvlS4pYKdQo1dkM7Jbt8wKRQdleRXOPPN7msoEUk
-Ta9ZsftHVUknPqblz9Uthb5h+sRaxIaE1llqDiECgYATS4oHzuL6k9uT+Qpyzymt
-qThoIJljQ7TgxjxvVhD9gjGV2CikQM1Vov1JBigj4Toc0XuxGXaUC7cv0kAMSpi2
-Y+VLG+K6ux8J70sGHTlVRgeGfxRq2MBfLKUbGplBeDG/zeJs0tSW7VullSkblgL6
-nKNa3LQ2QEt2k7KHswryHwKBgENDxk8bY1q7wTHKiNEffk+aFD25q4DUHMH0JWti
-fVsY98+upFU+gG2S7oOmREJE0aser0lDl7Zp2fu34IEOdfRY4p+s0O0gB+Vrl5VB
-L+j7r9bzaX6lNQN6MvA7ryHahZxRQaD/xLbQHgFRXbHUyvdTyo4yQ1821qwNclLk
-HUrhAoGAUtjR3nPFR4TEHlpTSQQovS8QtGTnOi7s7EzzdPWmjHPATrdLhMA0ezPj
-Mr+u5TRncZBIzAZtButlh1AHnpN/qO3P0c0Rbdep3XBc/82JWO8qdb5QvAkxga3X
-BpA7MNLxiqss+rCbwf3NbWxEMiDQ2zRwVoafVFys7tjmv6t2Xck=
------END RSA PRIVATE KEY-----
-`)