Function alloc_socket

components/net/at/at_socket/at_socket.c:471–499

}

static struct at_socket *alloc_socket(enum at_socket_type type)
{
    extern struct netdev *netdev_default;
    struct netdev *netdev = RT_NULL;
    struct at_device *device = RT_NULL;

    if (netdev_default && netdev_is_up(netdev_default) &&
            netdev_family_get(netdev_default) == AF_AT)
    {
        netdev = netdev_default;
    }
    else
    {
        /* get network interface device by protocol family AF_AT */
        netdev = netdev_get_by_family(AF_AT);
        if (netdev == RT_NULL)
        {
            return RT_NULL;
        }
    }

    device = at_device_get_by_name(AT_DEVICE_NAMETYPE_NETDEV, netdev->name);
    if (device == RT_NULL)
    {
        return RT_NULL;
    }

    return alloc_socket_by_device(device, type);
}

static void at_recv_notice_cb(struct at_socket *sock, at_socket_evt_t event, const char *buff, size_t bfsz);
static void at_closed_notice_cb(struct at_socket *sock, at_socket_evt_t event, const char *buff, size_t bfsz);