Argo CD web terminal session doesn't expire

@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"time"
 
+	util_session "github.com/argoproj/argo-cd/v2/util/session"
 	"github.com/argoproj/gitops-engine/pkg/utils/kube"
 	log "github.com/sirupsen/logrus"
 	v1 "k8s.io/api/core/v1"
@@ -37,11 +38,12 @@ type terminalHandler struct {
 	allowedShells     []string
 	namespace         string
 	enabledNamespaces []string
+	sessionManager    util_session.SessionManager
 }
 
 // NewHandler returns a new terminal handler.
 func NewHandler(appLister applisters.ApplicationLister, namespace string, enabledNamespaces []string, db db.ArgoDB, enf *rbac.Enforcer, cache *servercache.Cache,
-	appResourceTree AppResourceTreeFn, allowedShells []string) *terminalHandler {
+	appResourceTree AppResourceTreeFn, allowedShells []string, sessionManager util_session.SessionManager) *terminalHandler {
 	return &terminalHandler{
 		appLister:         appLister,
 		db:                db,
@@ -51,6 +53,7 @@ func NewHandler(appLister applisters.ApplicationLister, namespace string, enable
 		allowedShells:     allowedShells,
 		namespace:         namespace,
 		enabledNamespaces: enabledNamespaces,
+		sessionManager:    sessionManager,
 	}
 }
 
@@ -222,7 +225,7 @@ func (s *terminalHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 
 	fieldLog.Info("terminal session starting")
 
-	session, err := newTerminalSession(w, r, nil)
+	session, err := newTerminalSession(w, r, nil, s.sessionManager)
 	if err != nil {
 		http.Error(w, "Failed to start terminal session", http.StatusBadRequest)
 		return
@@ -282,6 +285,11 @@ type TerminalMessage struct {
 	Cols      uint16 `json:"cols"`
 }
 
+// TerminalCommand is the struct for websocket commands,For example you need ask client to reconnect
+type TerminalCommand struct {
+	Code int
+}
+
 // startProcess executes specified commands in the container and connects it up with the ptyHandler (a session)
 func startProcess(k8sClient kubernetes.Interface, cfg *rest.Config, namespace, podName, containerName string, cmd []string, ptyHandler PtyHandler) error {
 	req := k8sClient.CoreV1().RESTClient().Post().

@@ -3,6 +3,9 @@ package application
 import (
 	"encoding/json"
 	"fmt"
+	"github.com/argoproj/argo-cd/v2/common"
+	httputil "github.com/argoproj/argo-cd/v2/util/http"
+	util_session "github.com/argoproj/argo-cd/v2/util/session"
 	"net/http"
 	"sync"
 	"time"
@@ -12,6 +15,11 @@ import (
 	"k8s.io/client-go/tools/remotecommand"
 )
 
+const (
+	ReconnectCode    = 1
+	ReconnectMessage = "\nReconnect because the token was refreshed...\n"
+)
+
 var upgrader = func() websocket.Upgrader {
 	upgrader := websocket.Upgrader{}
 	upgrader.HandshakeTimeout = time.Second * 2
@@ -23,25 +31,40 @@ var upgrader = func() websocket.Upgrader {
 
 // terminalSession implements PtyHandler
 type terminalSession struct {
-	wsConn    *websocket.Conn
-	sizeChan  chan remotecommand.TerminalSize
-	doneChan  chan struct{}
-	tty       bool
-	readLock  sync.Mutex
-	writeLock sync.Mutex
+	wsConn         *websocket.Conn
+	sizeChan       chan remotecommand.TerminalSize
+	doneChan       chan struct{}
+	tty            bool
+	readLock       sync.Mutex
+	writeLock      sync.Mutex
+	sessionManager util_session.SessionManager
+	token          *string
+}
+
+// getToken get auth token from web socket request
+func getToken(r *http.Request) (string, error) {
+	cookies := r.Cookies()
+	return httputil.JoinCookies(common.AuthCookieName, cookies)
 }
 
 // newTerminalSession create terminalSession
-func newTerminalSession(w http.ResponseWriter, r *http.Request, responseHeader http.Header) (*terminalSession, error) {
+func newTerminalSession(w http.ResponseWriter, r *http.Request, responseHeader http.Header, sessionManager util_session.SessionManager) (*terminalSession, error) {
+	token, err := getToken(r)
+	if err != nil {
+		return nil, err
+	}
+
 	conn, err := upgrader.Upgrade(w, r, responseHeader)
 	if err != nil {
 		return nil, err
 	}
 	session := &terminalSession{
-		wsConn:   conn,
-		tty:      true,
-		sizeChan: make(chan remotecommand.TerminalSize),
-		doneChan: make(chan struct{}),
+		wsConn:         conn,
+		tty:            true,
+		sizeChan:       make(chan remotecommand.TerminalSize),
+		doneChan:       make(chan struct{}),
+		sessionManager: sessionManager,
+		token:          &token,
 	}
 	return session, nil
 }
@@ -78,8 +101,40 @@ func (t *terminalSession) Next() *remotecommand.TerminalSize {
 	}
 }
 
+// reconnect send reconnect code to client and ask them init new ws session
+func (t *terminalSession) reconnect() (int, error) {
+	reconnectCommand, _ := json.Marshal(TerminalCommand{
+		Code: ReconnectCode,
+	})
+	reconnectMessage, _ := json.Marshal(TerminalMessage{
+		Operation: "stdout",
+		Data:      ReconnectMessage,
+	})
+	t.writeLock.Lock()
+	err := t.wsConn.WriteMessage(websocket.TextMessage, reconnectMessage)
+	if err != nil {
+		log.Errorf("write message err: %v", err)
+		return 0, err
+	}
+	err = t.wsConn.WriteMessage(websocket.TextMessage, reconnectCommand)
+	if err != nil {
+		log.Errorf("write message err: %v", err)
+		return 0, err
+	}
+	t.writeLock.Unlock()
+	return 0, nil
+}
+
 // Read called in a loop from remotecommand as long as the process is running
 func (t *terminalSession) Read(p []byte) (int, error) {
+	// check if token still valid
+	_, newToken, err := t.sessionManager.VerifyToken(*t.token)
+	// err in case if token is revoked, newToken in case if refresh happened
+	if err != nil || newToken != "" {
+		// need to send reconnect code in case if token was refreshed
+		return t.reconnect()
+	}
+
 	t.readLock.Lock()
 	_, message, err := t.wsConn.ReadMessage()
 	t.readLock.Unlock()

@@ -0,0 +1,46 @@
+package application
+
+import (
+	"encoding/json"
+	"github.com/gorilla/websocket"
+	"github.com/stretchr/testify/assert"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+)
+
+func reconnect(w http.ResponseWriter, r *http.Request) {
+	var upgrader = websocket.Upgrader{}
+	c, err := upgrader.Upgrade(w, r, nil)
+	if err != nil {
+		return
+	}
+
+	ts := terminalSession{wsConn: c}
+	_, _ = ts.reconnect()
+}
+
+func TestReconnect(t *testing.T) {
+
+	s := httptest.NewServer(http.HandlerFunc(reconnect))
+	defer s.Close()
+
+	u := "ws" + strings.TrimPrefix(s.URL, "http")
+
+	// Connect to the server
+	ws, _, err := websocket.DefaultDialer.Dial(u, nil)
+	assert.NoError(t, err)
+
+	defer ws.Close()
+
+	_, p, _ := ws.ReadMessage()
+
+	var message TerminalMessage
+
+	err = json.Unmarshal(p, &message)
+
+	assert.NoError(t, err)
+	assert.Equal(t, message.Data, ReconnectMessage)
+
+}

@@ -975,7 +975,7 @@ func (a *ArgoCDServer) newHTTPServer(ctx context.Context, port int, grpcWebHandl
 	}
 	mux.Handle("/api/", handler)
 
-	terminal := application.NewHandler(a.appLister, a.Namespace, a.ApplicationNamespaces, a.db, a.enf, a.Cache, appResourceTreeFn, a.settings.ExecShells).
+	terminal := application.NewHandler(a.appLister, a.Namespace, a.ApplicationNamespaces, a.db, a.enf, a.Cache, appResourceTreeFn, a.settings.ExecShells, *a.sessionMgr).
 		WithFeatureFlagMiddleware(a.settingsMgr.GetSettings)
 	th := util_session.WithAuthMiddleware(a.DisableAuth, a.sessionMgr, terminal)
 	mux.Handle("/terminal", th)
@@ -988,6 +988,7 @@ func (a *ArgoCDServer) newHTTPServer(ctx context.Context, port int, grpcWebHandl
 		// will be added in mux.
 		registerExtensions(mux, a)
 	}
+
 	mustRegisterGWHandler(versionpkg.RegisterVersionServiceHandler, ctx, gwmux, conn)
 	mustRegisterGWHandler(clusterpkg.RegisterClusterServiceHandler, ctx, gwmux, conn)
 	mustRegisterGWHandler(applicationpkg.RegisterApplicationServiceHandler, ctx, gwmux, conn)

@@ -72,7 +72,14 @@ export const PodTerminalViewer: React.FC<PodTerminalViewerProps> = ({
 
     const onConnectionMessage = (e: MessageEvent) => {
         const msg = JSON.parse(e.data);
-        connSubject.next(msg);
+        if (!msg?.Code) {
+            connSubject.next(msg);
+        } else {
+            // Do reconnect due to refresh token event
+            onConnectionClose();
+            setupConnection()
+        }
+
     };
 
     const onConnectionOpen = () => {