int dtls1_new(SSL *s)
{
    DTLS1_STATE *d1;

    if (!ssl3_new(s))
        return (0);
    if ((d1 = OPENSSL_malloc(sizeof *d1)) == NULL)
        return (0);
    memset(d1, 0, sizeof *d1);

    /* d1->handshake_epoch=0; */

    d1->unprocessed_rcds.q = pqueue_new();
    d1->processed_rcds.q = pqueue_new();
    d1->buffered_messages = pqueue_new();
    d1->sent_messages = pqueue_new();
    d1->buffered_app_data.q = pqueue_new();

    if (s->server) {
        d1->cookie_len = sizeof(s->d1->cookie);
    }

    d1->link_mtu = 0;
    d1->mtu = 0;

    if (!d1->unprocessed_rcds.q || !d1->processed_rcds.q
        || !d1->buffered_messages || !d1->sent_messages
        || !d1->buffered_app_data.q) {
        if (d1->unprocessed_rcds.q)
            pqueue_free(d1->unprocessed_rcds.q);
        if (d1->processed_rcds.q)
            pqueue_free(d1->processed_rcds.q);
        if (d1->buffered_messages)
            pqueue_free(d1->buffered_messages);
        if (d1->sent_messages)
            pqueue_free(d1->sent_messages);
        if (d1->buffered_app_data.q)
            pqueue_free(d1->buffered_app_data.q);
        OPENSSL_free(d1);
        return (0);
    }

    s->d1 = d1;
    s->method->ssl_clear(s);
    return (1);
}

Unknown