htp events

static int HTPCallbackRequest(htp_tx_t *tx) {
    SCEnter();

    HtpState *hstate = htp_connp_get_user_data(tx->connp);
    if (hstate == NULL) {
        SCReturnInt(HTP_ERROR);
    }

    SCLogDebug("transaction_cnt %"PRIu64", list_size %"PRIu64,
               hstate->transaction_cnt, HTPStateGetTxCnt(hstate));

    SCLogDebug("HTTP request completed");

    if (tx != NULL) {
        if (tx->flags & (HTP_REQUEST_INVALID_T_E|HTP_REQUEST_SMUGGLING|HTP_REQUEST_INVALID_C_L|HTP_HOST_MISSING|HTP_HOST_AMBIGUOUS|HTP_AUTH_INVALID))
        {
            SCLogInfo("TX with events!");

            if (tx->flags & HTP_REQUEST_INVALID_T_E)
                AppLayerDecoderEventsSetEvent(hstate->f,
                        HTTP_DECODER_EVENT_INVALID_TRANSFER_ENCODING_VALUE_IN_REQUEST);
            if (tx->flags & HTP_REQUEST_INVALID_C_L)
                AppLayerDecoderEventsSetEvent(hstate->f,
                        HTTP_DECODER_EVENT_INVALID_CONTENT_LENGTH_FIELD_IN_REQUEST);
            if (tx->flags & HTP_HOST_MISSING)
                AppLayerDecoderEventsSetEvent(hstate->f,
                        HTTP_DECODER_EVENT_MISSING_HOST_HEADER);
            if (tx->flags & HTP_HOST_AMBIGUOUS)
                AppLayerDecoderEventsSetEvent(hstate->f,
                        HTTP_DECODER_EVENT_HOST_HEADER_AMBIGUOUS);
        }

        HtpTxUserData *htud = (HtpTxUserData *)htp_tx_get_user_data(tx);