Remove session expiration timer

pkg/session/session.go

@@ -20,7 +20,6 @@ type Session struct {
 
 	key       string
 	createdAt int64
-	expiration *time.Timer
 	lock      sync.Mutex
 }
 
@@ -34,15 +33,9 @@ func New(id uint64) (*Session, error) {
 		key:       key,
 		createdAt: time.Now().Unix(),
 		UserID:    id,
-		expiration: time.NewTimer(Expiration),
 	}, nil
 }
 
-func (s *Session) Init() {
-	exp := time.Until(time.Unix(s.createdAt, 0).Add(Expiration))
-	s.expiration = time.NewTimer(exp)
-}
-
 func (s *Session) Key() string {
 	s.lock.Lock()
 	key := s.key
@@ -51,11 +44,15 @@ func (s *Session) Key() string {
 }
 
 func (s *Session) SetCookie(w http.ResponseWriter, r *http.Request) {
+	s.lock.Lock()
+	created := time.Unix(s.createdAt, 0)
+	s.lock.Unlock()
+
 	http.SetCookie(w, &http.Cookie{
 		Name:     CookieName,
 		Value:    s.Key(),
 		Path:     "/",
-		Expires:  time.Now().Add(Expiration),
+		Expires:  created.Add(Expiration),
 		HttpOnly: true,
 		Secure:   r.TLS != nil,
 	})
@@ -83,8 +80,6 @@ func (s *Session) Refresh() (string, bool, error) {
 			return "", false, err
 		}
 
-		s.expiration.Reset(Expiration)
-
 		s.lock.Lock()
 		s.createdAt = time.Now().Unix()
 		s.key = key
@@ -95,10 +90,6 @@ func (s *Session) Refresh() (string, bool, error) {
 	return "", false, nil
 }
 
-func (s *Session) WaitUntilExpiration() {
-	<-s.expiration.C
-}
-
 func newSessionKey() (string, error) {
 	key := make([]byte, 32)
 	_, err := rand.Read(key)

server/state.go

@@ -248,7 +248,6 @@ func newStateStore(sessionStore storage.SessionStore) *stateStore {
 
 	for _, session := range sessions {
 		if !session.Expired() {
-			session.Init()
 			store.sessions[session.Key()] = session
 		} else {
 			go sessionStore.DeleteSession(session.Key())