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/*
* 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 <src/config.h>
#include <src/core/connection.h>
#include <src/core/message.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
struct wldr_state;
typedef struct wldr_state Wldr;
Wldr *wldr_Init();
void wldr_Destroy(Wldr **wldrPtr);
void wldr_ResetState(Wldr *wldr);
void wldr_SetLabel(Wldr *wldr, Message *message);
void wldr_DetectLosses(Wldr *wldr, const Connection *conn, Message *message);
void wldr_HandleWldrNotification(Wldr *wldr, const Connection *conn,
Message *message);
#endif // wldr_h
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