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netDatagram.h
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89 lines (72 loc) · 2.49 KB
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/**
* PANDA 3D SOFTWARE
* Copyright (c) Carnegie Mellon University. All rights reserved.
*
* All use of this software is subject to the terms of the revised BSD
* license. You should have received a copy of this license along
* with this source code in a file named "LICENSE."
*
* @file netDatagram.h
* @author jns
* @date 2000-02-07
*/
#ifndef NETDATAGRAM_H
#define NETDATAGRAM_H
#include "pandabase.h"
#include "connection.h"
#include "netAddress.h"
#include "datagram.h"
#include "pointerTo.h"
#include <string>
// This determines the size of the read buffer used to read UDP packets. It
// places a limit on the maximum receivable size of a UDP packet (although it
// doesn't limit TCP packets at all). However, there's no real reason this
// can't be set arbitrarily large, although there's not much point in making
// it larger than the system MTU, which also limits the maximum size of a UDP
// packet.
static const int maximum_udp_datagram = 1500;
/**
* A specific kind of Datagram, especially for sending across or receiving
* from a network. It's different only in that it knows which Connection
* and/or NetAddress it is to be sent to or was received from.
*/
class EXPCL_PANDA_NET NetDatagram : public Datagram {
PUBLISHED:
NetDatagram();
NetDatagram(const void *data, size_t size);
NetDatagram(const Datagram ©);
NetDatagram(const NetDatagram ©);
void operator = (const Datagram ©);
void operator = (const NetDatagram ©);
virtual void clear();
void set_connection(const PT(Connection) &connection);
PT(Connection) get_connection() const;
void set_address(const NetAddress &address);
const NetAddress &get_address() const;
public:
// We need these methods to make VC++ happy when we try to instantiate a
// QueuedReturn<Datagram>. They don't do anything useful.
INLINE bool operator == (const NetDatagram &other) const;
INLINE bool operator != (const NetDatagram &other) const;
INLINE bool operator < (const NetDatagram &other) const;
private:
PT(Connection) _connection;
NetAddress _address;
public:
static TypeHandle get_class_type() {
return _type_handle;
}
static void init_type() {
Datagram::init_type();
register_type(_type_handle, "NetDatagram",
Datagram::get_class_type());
}
virtual TypeHandle get_type() const {
return get_class_type();
}
virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
private:
static TypeHandle _type_handle;
};
#include "netDatagram.I"
#endif