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datagramTCPHeader.h
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1/**
2 * PANDA 3D SOFTWARE
3 * Copyright (c) Carnegie Mellon University. All rights reserved.
4 *
5 * All use of this software is subject to the terms of the revised BSD
6 * license. You should have received a copy of this license along
7 * with this source code in a file named "LICENSE."
8 *
9 * @file datagramTCPHeader.h
10 * @author drose
11 * @date 2000-02-08
12 */
13
14#ifndef DATAGRAMTCPHEADER_H
15#define DATAGRAMTCPHEADER_H
16
17#include "pandabase.h"
18
19#include "netDatagram.h"
20
21#include "datagramIterator.h"
22#include "numeric_types.h"
23
24 static const int datagram_tcp16_header_size = sizeof(uint16_t);
25 static const int datagram_tcp32_header_size = sizeof(uint32_t);
26
27 class NetDatagram;
28
29/**
30 * A class that encapsulates the extra bytes that are sent in front of each
31 * datagram to identify it when it is sent on TCP. This is similar to
32 * DatagramUDPHeader, except it does not include a checksum, since this is
33 * unnecessary on UDP.
34 */
35 class EXPCL_PANDA_NET DatagramTCPHeader {
36 public:
37 DatagramTCPHeader(const NetDatagram &datagram, int header_size);
38 DatagramTCPHeader(const void *data, int header_size);
39
40 int get_datagram_size(int header_size) const;
41 INLINE std::string get_header() const;
42
43 bool verify_datagram(const NetDatagram &datagram, int header_size) const;
44
45 private:
46 // The actual data for the header is stored (somewhat recursively) in its
47 // own NetDatagram object. This is just for convenience of packing and
48 // unpacking the header.
49 NetDatagram _header;
50};
51
52#include "datagramTCPHeader.I"
53
54#endif
DatagramTCPHeader::verify_datagram
bool verify_datagram(const NetDatagram &datagram, int header_size) const
Verifies that the indicated datagram has the appropriate length.
Definition datagramTCPHeader.cxx:91
DatagramTCPHeader::get_datagram_size
int get_datagram_size(int header_size) const
Returns the number of bytes in the associated datagram.
Definition datagramTCPHeader.cxx:70
DatagramTCPHeader::get_header
std::string get_header() const
Returns a pointer to a block of data of length datagram_tcp_header_size, which can be written to the ...
Definition datagramTCPHeader.I:19
DatagramTCPHeader::DatagramTCPHeader
DatagramTCPHeader(const NetDatagram &datagram, int header_size)
This constructor creates a header based on an already-constructed NetDatagram.
Definition datagramTCPHeader.cxx:26
NetDatagram
A specific kind of Datagram, especially for sending across or receiving from a network.
Definition netDatagram.h:40
datagramIterator.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
datagramTCPHeader.I
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
netDatagram.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
numeric_types.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
pandabase.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.