Function closesocket

components/net/sal/socket/net_sockets.c:702–742

* @brief Closes a socket. * * This function closes the socket specified by the file descriptor 's'. Once closed, the socket * can no longer be used for communication. Any pending data that has not been transmitted may be lost. * * @param s The file descriptor of the socket to close. * * @return Returns '0' on success. On failure, returns '-1' and sets errno to indicate the error. * * @not

 * @see send() Sends data on a socket.
 */
int closesocket(int s)
{
    int error = 0;
    int socket = -1;
    struct dfs_file *d;

    socket = dfs_net_getsocket(s);
    if (socket < 0)
    {
        rt_set_errno(-ENOTSOCK);
        return -1;
    }

    d = fd_get(s);
    if (d == RT_NULL)
    {
        rt_set_errno(-EBADF);
        return -1;
    }

    if (!d->vnode)
    {
        rt_set_errno(-EBADF);
        return -1;
    }

    if (sal_closesocket(socket) == 0)
    {
        error = 0;
    }
    else
    {
        rt_set_errno(-ENOTSOCK);
        error = -1;
    }

    /* socket has been closed, delete it from file system fd */
    fd_release(s);

    return error;
}
RTM_EXPORT(closesocket);

/**