/*
 * Copyright (c) 2017-2019 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef wldr_h
#define wldr_h

#include <hicn/hicn-light/config.h>
#include <hicn/core/connection.h>
#include <hicn/core/msgbuf.h>

#define BUFFER_SIZE 8192
#define MAX_RTX 3
#define WLDR_LBL 13
#define WLDR_NOTIFICATION 14
#define WLDR_UNKNOWN 15

//  NORMAL PACKET or RETRASMISSION
//      WLDR_LBL:  label = window size in the TCP header
//  NOTIFICATION
//    WLDR_NOTIFICATION:  expected_label = window size in the TCP header,
//    last_received_label = urgent pointer in the TCP header
//                        ATTENTION!!! in order to detect a notificaiton the
//                        source and destination ports must be set to 0

typedef struct wldr_s wldr_t;

wldr_t *wldr_create();

void wldr_free(wldr_t * wldr);

void wldr_reset_state(wldr_t * wldr);

void wldr_set_label(wldr_t * wldr, msgbuf_t * msgbuf);

void wldr_detect_losses(wldr_t * wldr, const connection_t * connection,
        const msgbuf_t * msgbuf);

void wldr_handle_notification(wldr_t *wldr, const connection_t * connection,
        const msgbuf_t * msgbuf);
#endif  // wldr_h