XTLS/Xray-core · error

User %s already exists.

Error message

User %s already exists.

What it means

Error "User %s already exists." thrown in XTLS/Xray-core.

Source

Thrown at proxy/shadowsocks_2022/inbound_multi.go:102

		C.Map(memUsers, func(it *protocol.MemoryUser) string { return it.Account.(*MemoryAccount).Key }),
	)
	if err != nil {
		return nil, errors.New("create service").Base(err)
	}

	inbound.service = service
	return inbound, nil
}

// AddUser implements proxy.UserManager.AddUser().
func (i *MultiUserInbound) AddUser(ctx context.Context, u *protocol.MemoryUser) error {
	i.Lock()
	defer i.Unlock()

	if u.Email != "" {
		for idx := range i.users {
			if i.users[idx].Email == u.Email {
				return errors.New("User ", u.Email, " already exists.")
			}
		}
	}
	i.users = append(i.users, u)

	// sync to multi service
	// Considering implements shadowsocks2022 in xray-core may have better performance.
	i.service.UpdateUsersWithPasswords(
		C.MapIndexed(i.users, func(index int, it *protocol.MemoryUser) int { return index }),
		C.Map(i.users, func(it *protocol.MemoryUser) string { return it.Account.(*MemoryAccount).Key }),
	)

	return nil
}

// RemoveUser implements proxy.UserManager.RemoveUser().
func (i *MultiUserInbound) RemoveUser(ctx context.Context, email string) error {
	if email == "" {

View on GitHub (pinned to 7d214f8b09)

When it happens

Trigger: Thrown at proxy/shadowsocks_2022/inbound_multi.go:102 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of XTLS/Xray-core@7d214f8b09 (2026-08-15). Data as JSON: /api/errors/579e0563cab5c7a6. Report an issue: GitHub.