Function socket

components/net/sal/socket/net_sockets.c:631–680

* @brief Creates a network socket. * * This function creates a socket and returns a file descriptor that can be used for network communication. * * @param domain The communication protocol family (address family) that defines the socket's protocol. * Common values include: * - 'AF_INET': IPv4 * - 'AF_INET6': IPv6 * - 'AF_UNIX': Local

 * @see connect() Used to connect to a remote host.
 */
int socket(int domain, int type, int protocol)
{
    /* create a BSD socket */
    int fd;
    int socket;
    struct dfs_file *d;

    /* allocate a fd */
    fd = fd_new();
    if (fd < 0)
    {
        rt_set_errno(-ENOMEM);

        return -1;
    }
    d = fd_get(fd);

#ifdef RT_USING_DFS_V2
    d->fops = dfs_net_get_fops();
#endif

    d->vnode = (struct dfs_vnode *)rt_malloc(sizeof(struct dfs_vnode));
    if (!d->vnode)
    {
        /* release fd */
        fd_release(fd);
        rt_set_errno(-ENOMEM);
        return -1;
    }
    dfs_vnode_init(d->vnode, FT_SOCKET, dfs_net_get_fops());

    /* create socket  and then put it to the dfs_file */
    socket = sal_socket(domain, type, protocol);
    if (socket >= 0)
    {
        d->flags = O_RDWR; /* set flags as read and write */

        /* set socket to the data of dfs_file */
        d->vnode->data = (void *)(size_t)socket;
    }
    else
    {
        /* release fd */
        fd_release(fd);
        rt_set_errno(-ENOMEM);
        return -1;
    }

    return fd;
}
RTM_EXPORT(socket);

/**