libtins 4.5
Loading...
Searching...
No Matches
ack_tracker.h
1/*
2 * Copyright (c) 2017, Matias Fontanini
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * * Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 */
29
30#ifndef TINS_TCP_IP_ACK_TRACKER_H
31#define TINS_TCP_IP_ACK_TRACKER_H
32
33#include <tins/config.h>
34
35#ifdef TINS_HAVE_ACK_TRACKER
36
37#include <vector>
38#include <boost/icl/interval_set.hpp>
39#include <tins/macros.h>
40
41namespace Tins {
42
43class PDU;
44
45namespace TCPIP {
46
52class TINS_API AckedRange {
53public:
54 typedef boost::icl::discrete_interval<uint32_t> interval_type;
55
62 AckedRange(uint32_t first, uint32_t last);
63
69 interval_type next();
70
75 bool has_next() const;
76
80 uint32_t first() const;
81
85 uint32_t last() const;
86private:
87 uint32_t first_;
88 uint32_t last_;
89};
90
94class TINS_API AckTracker {
95public:
99 typedef boost::icl::interval_set<uint32_t> interval_set_type;
100
104 AckTracker();
105
112 AckTracker(uint32_t initial_ack, bool use_sack = true);
113
117 void process_packet(const PDU& packet);
118
122 void use_sack();
123
127 uint32_t ack_number() const;
128
132 const interval_set_type& acked_intervals() const;
133
140 bool is_segment_acked(uint32_t sequence_number, uint32_t length) const;
141private:
142 void process_sack(const std::vector<uint32_t>& sack);
143 void cleanup_sacked_intervals(uint32_t old_ack, uint32_t new_ack);
144
145 interval_set_type acked_intervals_;
146 uint32_t ack_number_;
147 bool use_sack_;
148};
149
150} // TCPIP
151} // Tins
152
153#endif // TINS_HAVE_ACK_TRACKER
154
155#endif // TINS_TCP_IP_ACK_TRACKER_H
156
The Tins namespace.
Definition address_range.h:38