Function socketpair

components/net/sal/socket/net_sockets.c:771–804

* @brief Creates a pair of connected sockets. * * The 'socketpair()' function creates two connected sockets, which can be used for bidirectional * communication between processes or threads on the same machine. This is commonly used for inter-process * communication (IPC) in UNIX-like operating systems. * * @param domain The communication domain (or protocol family). Typically, 'AF_UNIX' (

 * @see pipe() Creates an unidirectional communication channel between processes.
 */
int socketpair(int domain, int type, int protocol, int *fds)
{
    rt_err_t ret = 0;
    int sock_fds[2];

    fds[0] = socket(domain, type, protocol);
    if (fds[0] < 0)
    {
        fds[0] = 0;
        return -1;
    }

    fds[1] = socket(domain, type, protocol);
    if (fds[1] < 0)
    {
        closesocket(fds[0]);
        fds[0] = 0;
        fds[1] = 0;
        return -1;
    }

    sock_fds[0] = dfs_net_getsocket(fds[0]);
    sock_fds[1] = dfs_net_getsocket(fds[1]);

    ret = sal_socketpair(domain, type, protocol, sock_fds);

    if (ret < 0)
    {
        closesocket(fds[0]);
        closesocket(fds[1]);
    }

    return ret;
}
RTM_EXPORT(socketpair);

/**