static int vnc_display_listen_addr(VncDisplay *vd,
                                   SocketAddress *addr,
                                   const char *name,
                                   QIOChannelSocket ***lsock,
                                   guint **lsock_tag,
                                   size_t *nlsock,
                                   Error **errp)
{
    QIODNSResolver *resolver = qio_dns_resolver_get_instance();
    SocketAddress **rawaddrs = NULL;
    size_t nrawaddrs = 0;
    Error *listenerr = NULL;
    bool listening = false;
    size_t i;

    if (qio_dns_resolver_lookup_sync(resolver, addr, &nrawaddrs,
                                     &rawaddrs, errp) < 0) {
        return -1;
    }

    for (i = 0; i < nrawaddrs; i++) {
        QIOChannelSocket *sioc = qio_channel_socket_new();

        qio_channel_set_name(QIO_CHANNEL(sioc), name);
        if (qio_channel_socket_listen_sync(
                sioc, rawaddrs[i], listenerr == NULL ? &listenerr : NULL) < 0) {
            object_unref(OBJECT(sioc));
            continue;
        }
        listening = true;
        (*nlsock)++;
        *lsock = g_renew(QIOChannelSocket *, *lsock, *nlsock);
        *lsock_tag = g_renew(guint, *lsock_tag, *nlsock);

        (*lsock)[*nlsock - 1] = sioc;
        (*lsock_tag)[*nlsock - 1] = 0;
    }

    for (i = 0; i < nrawaddrs; i++) {
        qapi_free_SocketAddress(rawaddrs[i]);
    }
    g_free(rawaddrs);

    if (listenerr) {
        if (!listening) {
            error_propagate(errp, listenerr);
            return -1;
        } else {
            error_free(listenerr);
        }
    }

    for (i = 0; i < *nlsock; i++) {
        (*lsock_tag)[i] = qio_channel_add_watch(
            QIO_CHANNEL((*lsock)[i]),
            G_IO_IN, vnc_listen_io, vd, NULL);
    }

    return 0;
}
static int vnc_display_listen_addr(VncDisplay *vd,
                                   SocketAddress *addr,
                                   const char *name,
                                   QIOChannelSocket ***lsock,
                                   guint **lsock_tag,
                                   size_t *nlsock,
                                   Error **errp)
{
    QIODNSResolver *resolver = qio_dns_resolver_get_instance();
    SocketAddress **rawaddrs = NULL;
    size_t nrawaddrs = 0;
    Error *listenerr = NULL;
    bool listening = false;
    size_t i;

    if (qio_dns_resolver_lookup_sync(resolver, addr, &nrawaddrs,
                                     &rawaddrs, errp) < 0) {
        return -1;
    }

    for (i = 0; i < nrawaddrs; i++) {
        QIOChannelSocket *sioc = qio_channel_socket_new();

        qio_channel_set_name(QIO_CHANNEL(sioc), name);
        if (qio_channel_socket_listen_sync(
                sioc, rawaddrs[i], listenerr == NULL ? &listenerr : NULL) < 0) {
            object_unref(OBJECT(sioc));
            continue;
        }
        listening = true;
        (*nlsock)++;
        *lsock = g_renew(QIOChannelSocket *, *lsock, *nlsock);
        *lsock_tag = g_renew(guint, *lsock_tag, *nlsock);

        (*lsock)[*nlsock - 1] = sioc;
        (*lsock_tag)[*nlsock - 1] = 0;
    }

    for (i = 0; i < nrawaddrs; i++) {
        qapi_free_SocketAddress(rawaddrs[i]);
    }
    g_free(rawaddrs);

    if (listenerr) {
        if (!listening) {
            error_propagate(errp, listenerr);
            return -1;
        } else {
            error_free(listenerr);
        }
    }

    for (i = 0; i < *nlsock; i++) {
        (*lsock_tag)[i] = qio_channel_add_watch(
            QIO_CHANNEL((*lsock)[i]),
            G_IO_IN, vnc_listen_io, vd, NULL);
    }

    return 0;
}