mbedtls_tls_recv_timeout

int mbedtls_tls_recv_timeout( void *ctx, unsigned char *buf, size_t len,
                      uint32_t timeout )
{
    int ret, err;
    struct timeval tv;
    fd_set read_fds;

    struct fns_timeval  tv_fns;
    fns_fd_set          read_fds_fns;

    int fd = ((mbedtls_net_context *) ctx)->fd;

    if( fd < 0 )
        return( MBEDTLS_ERR_NET_INVALID_CONTEXT );

    if(ipv6)
    {
        FD_ZERO( &read_fds_fns );
        FD_SET( fd, &read_fds_fns );
        tv_fns.tv_sec  = 10;
        tv_fns.tv_usec = 0;
        ret = fnsSelect( fd + 1, &read_fds_fns, NULL, NULL, &tv_fns, (int*)&err );
    }
    else
    {
        FD_ZERO( &read_fds );
        FD_SET( fd, &read_fds );
        tv.tv_sec  = 10;
        tv.tv_usec = 0;
        ret = select( fd + 1, &read_fds, NULL, NULL, &tv );
    }

    /* Zero fds ready means we timed out */
    if( ret == 0 ) {
        FTP_DEBUG0("mbedtls_tls_recv_timeout :: timed out\n");
        return( MBEDTLS_ERR_SSL_TIMEOUT );
    }

    if( ret < 0 )
    {
#if ( defined(_WIN32) || defined(_WIN32_WCE) ) && !defined(EFIX64) && \
    !defined(EFI32)
        if( WSAGetLastError() == WSAEINTR )
            return( MBEDTLS_ERR_SSL_WANT_READ );
#else
        if( errno == EINTR )
            return( MBEDTLS_ERR_SSL_WANT_READ );
#endif

        return( MBEDTLS_ERR_NET_RECV_FAILED );
    }

    /* This call will not block */
    return( mbedtls_tls_recv( ctx, buf, len ) );
}