Golang websocket.NewConfig函數代碼示例

// connectStream is the internal version of ConnectStream. It differs from
// ConnectStream only in that it will not retry the connection if it encounters
// discharge-required error.
func (st *state) connectStream(path string, attrs url.Values) (base.Stream, error) {
	path, err := apiPath(st.modelTag, path)
	if err != nil {
		return nil, errors.Trace(err)
	}
	target := url.URL{
		Scheme:   "wss",
		Host:     st.addr,
		Path:     path,
		RawQuery: attrs.Encode(),
	}
	cfg, err := websocket.NewConfig(target.String(), "http://localhost/")
	if st.tag != "" {
		cfg.Header = utils.BasicAuthHeader(st.tag, st.password)
	}
	if st.nonce != "" {
		cfg.Header.Set(params.MachineNonceHeader, st.nonce)
	}
	// Add any cookies because they will not be sent to websocket
	// connections by default.
	st.addCookiesToHeader(cfg.Header)

	cfg.TlsConfig = st.tlsConfig
	connection, err := websocketDialConfig(cfg)
	if err != nil {
		return nil, err
	}
	if err := readInitialStreamError(connection); err != nil {
		return nil, errors.Trace(err)
	}
	return connection, nil
}

func (s *S) TestAppShellUnauthorizedError(c *check.C) {
	a := app.App{
		Name:      "someapp",
		Platform:  "zend",
		TeamOwner: s.team.Name,
	}
	err := app.CreateApp(&a, s.user)
	c.Assert(err, check.IsNil)
	err = s.provisioner.AddUnits(&a, 1, "web", nil)
	c.Assert(err, check.IsNil)
	m := RunServer(true)
	server := httptest.NewServer(m)
	defer server.Close()
	testServerURL, err := url.Parse(server.URL)
	c.Assert(err, check.IsNil)
	url := fmt.Sprintf("ws://%s/apps/%s/shell?width=140&height=38&term=xterm", testServerURL.Host, a.Name)
	config, err := websocket.NewConfig(url, "ws://localhost/")
	c.Assert(err, check.IsNil)
	wsConn, err := websocket.DialConfig(config)
	c.Assert(err, check.IsNil)
	defer wsConn.Close()
	_, err = wsConn.Write([]byte("echo test"))
	c.Assert(err, check.IsNil)
	var result string
	err = tsurutest.WaitCondition(5*time.Second, func() bool {
		part, readErr := ioutil.ReadAll(wsConn)
		if readErr != nil {
			return false
		}
		result += string(part)
		return result == "Error: no token provided or session expired, please login again\n"
	})
	c.Assert(err, check.IsNil)
}

func (c *Client) Stream(path string, headers map[string]string, in io.Reader, out io.WriteCloser) error {
	origin := fmt.Sprintf("https://%s", c.Host)
	endpoint := fmt.Sprintf("wss://%s%s", c.Host, path)

	config, err := websocket.NewConfig(endpoint, origin)

	if err != nil {
		return err
	}

	config.TlsConfig = &tls.Config{
		InsecureSkipVerify: true,
	}

	config.Header.Set("Version", c.Version)

	userpass := fmt.Sprintf("convox:%s", c.Password)
	userpass_encoded := base64.StdEncoding.EncodeToString([]byte(userpass))

	config.Header.Add("Authorization", fmt.Sprintf("Basic %s", userpass_encoded))

	for k, v := range headers {
		config.Header.Add(k, v)
	}

	config.TlsConfig = &tls.Config{
		InsecureSkipVerify: true,
	}

	var ws *websocket.Conn

	if proxy := os.Getenv("HTTPS_PROXY"); proxy != "" {
		ws, err = c.proxyWebsocket(config, proxy)
	} else {
		ws, err = websocket.DialConfig(config)
	}

	if err != nil {
		return err
	}

	defer ws.Close()

	var wg sync.WaitGroup

	if in != nil {
		go io.Copy(ws, in)
	}

	if out != nil {
		wg.Add(1)
		go copyAsync(out, ws, &wg)
	}

	wg.Wait()

	out.Close()

	return nil
}

func (prod *Websocket) serve() {
	defer prod.WorkerDone()

	listen, err := shared.NewStopListener(prod.address)
	if err != nil {
		Log.Error.Print("Websocket: ", err)
		return // ### return, could not connect ###
	}

	config, err := websocket.NewConfig(prod.address, prod.path)
	if err != nil {
		Log.Error.Print("Websocket: ", err)
		return // ### return, could not connect ###
	}

	srv := http.Server{
		Handler: websocket.Server{
			Handler: prod.handleConnection,
			Config:  *config,
		},
		ReadTimeout: prod.readTimeoutSec,
	}

	prod.listen = listen

	err = srv.Serve(prod.listen)
	_, isStopRequest := err.(shared.StopRequestError)
	if err != nil && !isStopRequest {
		Log.Error.Print("Websocket: ", err)
	}
}

func main() {
	wsConfig, _ := websocket.NewConfig("wss://www.example2.com/echo", "http://localhost/")
	wsConfig.TlsConfig = &tls.Config{
		InsecureSkipVerify: true,
		ServerName:         "www.example2.com",
	}

	ws, err := websocket.DialConfig(wsConfig)
	if err != nil {
		log.Fatal(err)
	}

	message := []byte("hello, world!")
	_, err = ws.Write(message)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("Send: %s\n", message)

	var msg = make([]byte, len(message))
	_, err = ws.Read(msg)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("Receive: %s\n", msg)
}

func readWebSocket(r *Reader, t *testing.T, fn func(*websocket.Conn), protocols ...string) ([]byte, error) {
	errCh := make(chan error, 1)
	s, addr := newServer(func(ws *websocket.Conn) {
		cfg := ws.Config()
		cfg.Protocol = protocols
		go func() {
			err := <-r.err
			errCh <- err
		}()
		r.handle(ws)
	})
	defer s.Close()

	config, _ := websocket.NewConfig("ws://"+addr, "http://"+addr)
	client, err := websocket.DialConfig(config)
	if err != nil {
		return nil, err
	}
	defer client.Close()

	if fn != nil {
		fn(client)
	}

	data, err := ioutil.ReadAll(client)
	if err != nil {
		return data, err
	}
	return data, <-errCh
}

func readWebSocket(r *Reader, t *testing.T, fn func(*websocket.Conn), protocols ...string) ([]byte, error) {
	errCh := make(chan error, 1)
	s, addr := newServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		errCh <- r.Copy(w, req)
	}))
	defer s.Close()

	config, _ := websocket.NewConfig("ws://"+addr, "http://"+addr)
	config.Protocol = protocols
	client, err := websocket.DialConfig(config)
	if err != nil {
		return nil, err
	}
	defer client.Close()

	if fn != nil {
		fn(client)
	}

	data, err := ioutil.ReadAll(client)
	if err != nil {
		return data, err
	}
	return data, <-errCh
}

func expectWebSocketFrames(r *Reader, t *testing.T, fn func(*websocket.Conn), frames [][]byte, protocols ...string) error {
	errCh := make(chan error, 1)
	s, addr := newServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		errCh <- r.Copy(w, req)
	}))
	defer s.Close()

	config, _ := websocket.NewConfig("ws://"+addr, "http://"+addr)
	config.Protocol = protocols
	ws, err := websocket.DialConfig(config)
	if err != nil {
		return err
	}
	defer ws.Close()

	if fn != nil {
		fn(ws)
	}

	for i := range frames {
		var data []byte
		if err := websocket.Message.Receive(ws, &data); err != nil {
			return err
		}
		if !reflect.DeepEqual(frames[i], data) {
			return fmt.Errorf("frame %d did not match expected: %v", data, err)
		}
	}
	var data []byte
	if err := websocket.Message.Receive(ws, &data); err != io.EOF {
		return fmt.Errorf("expected no more frames: %v (%v)", err, data)
	}
	return <-errCh
}

func (st *serverTester) websocket(rp requestParam) (*serverResponse, error) {
	urlstring := st.url + "/echo"

	config, err := websocket.NewConfig(urlstring, st.url)
	if err != nil {
		st.t.Fatalf("websocket.NewConfig(%q, %q) returned error: %v", urlstring, st.url, err)
	}

	config.Header.Add("Test-Case", rp.name)
	for _, h := range rp.header {
		config.Header.Add(h.Name, h.Value)
	}

	ws, err := websocket.NewClient(config, st.conn)
	if err != nil {
		st.t.Fatalf("Error creating websocket client: %v", err)
	}

	if _, err := ws.Write(rp.body); err != nil {
		st.t.Fatalf("ws.Write() returned error: %v", err)
	}

	msg := make([]byte, 1024)
	var n int
	if n, err = ws.Read(msg); err != nil {
		st.t.Fatalf("ws.Read() returned error: %v", err)
	}

	res := &serverResponse{
		body: msg[:n],
	}

	return res, nil
}

func (s *S) TestAppShellGenericError(c *check.C) {
	m := RunServer(true)
	server := httptest.NewServer(m)
	defer server.Close()
	testServerURL, err := url.Parse(server.URL)
	c.Assert(err, check.IsNil)
	url := fmt.Sprintf("ws://%s/apps/someapp/shell?width=140&height=38&term=xterm", testServerURL.Host)
	config, err := websocket.NewConfig(url, "ws://localhost/")
	c.Assert(err, check.IsNil)
	config.Header.Set("Authorization", "bearer "+s.token.GetValue())
	wsConn, err := websocket.DialConfig(config)
	c.Assert(err, check.IsNil)
	defer wsConn.Close()
	_, err = wsConn.Write([]byte("echo test"))
	c.Assert(err, check.IsNil)
	var result string
	err = tsurutest.WaitCondition(5*time.Second, func() bool {
		part, readErr := ioutil.ReadAll(wsConn)
		if readErr != nil {
			c.Log(readErr)
			return false
		}
		result += string(part)
		return result == "Error: App someapp not found.\n"
	})
	c.Assert(err, check.IsNil)
}

func testWebSocketServer(hdrs map[string]string, expected string) {
	origin := "http://127.0.0.1/"
	url := "ws://" + string(_defaultFrontdAddr) + "/echo"
	cfg, err := websocket.NewConfig(url, origin)
	if err != nil {
		panic(err)
	}

	for k, v := range hdrs {
		cfg.Header.Set(k, v)
	}

	ws, err := websocket.DialConfig(cfg)
	if err != nil {
		panic(err)
	}
	if _, err := ws.Write([]byte(expected)); err != nil {
		panic(err)
	}
	var msg = make([]byte, len(expected))
	var n int
	if n, err = ws.Read(msg); err != nil {
		panic(err)
	}

	if expected != string(msg[:n]) {
		log.Println(string(msg[:n]))
		log.Println(expected)
		panic(fmt.Errorf("websocket reply not match: %s", string(msg[:n])))
	}

}

func cli(args CommandLineArguments, wg *sync.WaitGroup) {
	defer wg.Done()
	cfg, err := websocket.NewConfig(args.server, "wss://localhost")
	if err != nil {
		panic(err)
	}
	cert, err := tls.LoadX509KeyPair("server.pem", "server.key")
	if err != nil {
		panic(err)
	}
	config := tls.Config{Certificates: []tls.Certificate{cert}}
	config.InsecureSkipVerify = true
	cfg.TlsConfig = &config
	ws, err := websocket.DialConfig(cfg)
	if err != nil {
		panic(err)
	}
	if args.msg != "" {
		log.Println("Write data to websocket")
		_, err = ws.Write([]byte(args.msg))
		if err != nil {
			panic(err)
		}
	}
	if args.file != "" {
		go func() {
			f, err := os.Open(args.file)
			if err != nil {
				panic(err)
			}
			defer f.Close()
			s := bufio.NewScanner(f)
			for s.Scan() {
				time.Sleep(time.Duration(args.delay) * time.Second)
				_, err = ws.Write([]byte(s.Text()))
				if err != nil {
					panic(err)
				}
			}
		}()
	}
	ws.SetReadDeadline(time.Now().Add(time.Second * time.Duration(args.timeOut)))
	msgOut := make([]byte, 16384)
	for {
		n, err := ws.Read(msgOut)
		log.Println("Read bytes:", n)
		if err == io.EOF {
			log.Println("Reading finished")
			break
		}
		if err != nil {
			log.Println(err)
			break
		}
		log.Println(string(msgOut[:n]))
	}
	log.Println("Closing connection")
	ws.Close()
}

func (s *S) TestServeHTTPWebSocket(c *check.C) {
	var servers []*httptest.Server
	for i := 0; i < 2; i++ {
		msg := fmt.Sprintf("server-%d", i)
		srv := httptest.NewServer(websocket.Handler(func(conn *websocket.Conn) {
			conn.Write([]byte(msg + conn.Request().URL.Path))
			buf := make([]byte, 5)
			conn.Read(buf)
			conn.Write(buf)
		}))
		defer srv.Close()
		servers = append(servers, srv)
	}
	var err error
	_, err = s.redis.Do("RPUSH", "frontend:myfrontend.com", "myfrontend", servers[0].URL, servers[1].URL)
	c.Assert(err, check.IsNil)
	router := Router{}
	err = router.Init()
	c.Assert(err, check.IsNil)
	proxyServer := httptest.NewServer(&router)
	defer proxyServer.Close()
	dialWS := func() *websocket.Conn {
		config, err := websocket.NewConfig("ws://myfrontend.com", "ws://localhost/")
		c.Assert(err, check.IsNil)
		url, _ := url.Parse(proxyServer.URL)
		client, err := net.Dial("tcp", url.Host)
		c.Assert(err, check.IsNil)
		conn, err := websocket.NewClient(config, client)
		c.Assert(err, check.IsNil)
		return conn
	}
	msgBuf := make([]byte, 100)
	conn := dialWS()
	defer conn.Close()
	n, err := conn.Read(msgBuf)
	c.Assert(err, check.IsNil)
	c.Assert(n, check.Equals, 9)
	c.Assert(string(msgBuf[:n]), check.Equals, "server-0/")
	n, err = conn.Write([]byte("12345"))
	c.Assert(err, check.IsNil)
	c.Assert(n, check.Equals, 5)
	n, err = conn.Read(msgBuf)
	c.Assert(err, check.IsNil)
	c.Assert(n, check.Equals, 5)
	c.Assert(string(msgBuf[:n]), check.Equals, "12345")
	conn = dialWS()
	defer conn.Close()
	n, err = conn.Read(msgBuf)
	c.Assert(err, check.IsNil)
	c.Assert(n, check.Equals, 9)
	c.Assert(string(msgBuf[:n]), check.Equals, "server-1/")
	n, err = conn.Write([]byte("12345"))
	c.Assert(err, check.IsNil)
	c.Assert(n, check.Equals, 5)
	n, err = conn.Read(msgBuf)
	c.Assert(err, check.IsNil)
	c.Assert(n, check.Equals, 5)
	c.Assert(string(msgBuf[:n]), check.Equals, "12345")
}

func TestBase64Conn(t *testing.T) {
	conn := NewConn(NewDefaultChannelProtocols([]ChannelType{ReadWriteChannel, ReadWriteChannel}))
	s, addr := newServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
		conn.Open(w, req)
	}))
	defer s.Close()

	config, err := websocket.NewConfig("ws://"+addr, "http://localhost/")
	if err != nil {
		t.Fatal(err)
	}
	config.Protocol = []string{"base64.channel.k8s.io"}
	client, err := websocket.DialConfig(config)
	if err != nil {
		t.Fatal(err)
	}
	defer client.Close()

	<-conn.ready
	wg := sync.WaitGroup{}
	wg.Add(1)
	go func() {
		defer wg.Done()
		data, err := ioutil.ReadAll(conn.channels[0])
		if err != nil {
			t.Fatal(err)
		}
		if !reflect.DeepEqual(data, []byte("client")) {
			t.Errorf("unexpected server read: %s", string(data))
		}
	}()

	clientData := base64.StdEncoding.EncodeToString([]byte("client"))
	if n, err := client.Write(append([]byte{'0'}, clientData...)); err != nil || n != len(clientData)+1 {
		t.Fatalf("%d: %v", n, err)
	}

	wg.Add(1)
	go func() {
		defer wg.Done()
		if n, err := conn.channels[1].Write([]byte("server")); err != nil && n != 6 {
			t.Fatalf("%d: %v", n, err)
		}
	}()

	data := make([]byte, 1024)
	if n, err := io.ReadAtLeast(client, data, 9); n != 9 || err != nil {
		t.Fatalf("%d: %v", n, err)
	}
	expect := []byte(base64.StdEncoding.EncodeToString([]byte("server")))

	if !reflect.DeepEqual(data[:9], append([]byte{'1'}, expect...)) {
		t.Errorf("unexpected client read: %v", data[:9])
	}

	client.Close()
	wg.Wait()
}

func TestBase64Conn(t *testing.T) {
	conn := NewConn(ReadWriteChannel, ReadWriteChannel)
	// TODO: Uncomment next two lines and remove third line when fix #19254
	// s, addr := newServer(conn.handle)
	// defer s.Close()
	_, addr := newServer(conn.handle)

	config, err := websocket.NewConfig("ws://"+addr, "http://localhost/")
	if err != nil {
		t.Fatal(err)
	}
	config.Protocol = []string{"base64.channel.k8s.io"}
	client, err := websocket.DialConfig(config)
	if err != nil {
		t.Fatal(err)
	}
	defer client.Close()

	<-conn.ready
	wg := sync.WaitGroup{}
	wg.Add(1)
	go func() {
		defer wg.Done()
		data, err := ioutil.ReadAll(conn.channels[0])
		if err != nil {
			t.Fatal(err)
		}
		if !reflect.DeepEqual(data, []byte("client")) {
			t.Errorf("unexpected server read: %s", string(data))
		}
	}()

	clientData := base64.StdEncoding.EncodeToString([]byte("client"))
	if n, err := client.Write(append([]byte{'0'}, clientData...)); err != nil || n != len(clientData)+1 {
		t.Fatalf("%d: %v", n, err)
	}

	wg.Add(1)
	go func() {
		defer wg.Done()
		if n, err := conn.channels[1].Write([]byte("server")); err != nil && n != 6 {
			t.Fatalf("%d: %v", n, err)
		}
	}()

	data := make([]byte, 1024)
	if n, err := io.ReadAtLeast(client, data, 9); n != 9 || err != nil {
		t.Fatalf("%d: %v", n, err)
	}
	expect := []byte(base64.StdEncoding.EncodeToString([]byte("server")))

	if !reflect.DeepEqual(data[:9], append([]byte{'1'}, expect...)) {
		t.Errorf("unexpected client read: %v", data[:9])
	}

	client.Close()
	wg.Wait()
}