}

	// No acceptable certificate found. Don't send a certificate.
	return new(Certificate), nil
}

// clientSessionCacheKey returns a key used to cache sessionTickets that could
// be used to resume previously negotiated TLS sessions with a server.
func (c *Conn) clientSessionCacheKey() string {
	if len(c.config.ServerName) > 0 {
		return c.config.ServerName
	}
	if c.conn != nil {

func (q *QUICConn) StoreSession(session *SessionState) error {
	c := q.conn
	if !c.isClient {
		return quicError(errors.New("tls: StoreSessionTicket called on the server"))
	}
	cacheKey := c.clientSessionCacheKey()
	if cacheKey == "" {
		return nil
	}
	cs := &ClientSessionState{session: session}
	c.config.ClientSessionCache.Put(cacheKey, cs)
	return nil
}

	session.ticket = msg.label
	if c.quic != nil && c.quic.enableStoreSessionEvent {
		c.quicStoreSession(session)
		return nil
	}
	cs := &ClientSessionState{session: session}
	if cacheKey := c.clientSessionCacheKey(); cacheKey != "" {
		c.config.ClientSessionCache.Put(cacheKey, cs)
	}

	return nil