Panda3D

datagramUDPHeader.h

00001 // Filename: datagramUDPHeader.h
00002 // Created by:  drose (08Feb00)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef DATAGRAMUDPHEADER_H
00016 #define DATAGRAMUDPHEADER_H
00017 
00018 #include "pandabase.h"
00019 
00020 #include "netDatagram.h"
00021 
00022 #include "datagramIterator.h"
00023 #include "numeric_types.h"
00024 
00025 static const int datagram_udp_header_size = sizeof(PN_uint16);
00026 
00027 class NetDatagram;
00028 
00029 ////////////////////////////////////////////////////////////////////
00030 //       Class : DatagramUDPHeader
00031 // Description : A class that encapsulates the extra bytes that are
00032 //               sent in front of each datagram to identify it when it
00033 //               is sent on UDP.  Like NetDatagram, this class
00034 //               automatically handles converting its data to and from
00035 //               the network byte ordering.
00036 ////////////////////////////////////////////////////////////////////
00037 class EXPCL_PANDA_NET DatagramUDPHeader {
00038 public:
00039   DatagramUDPHeader(const NetDatagram &datagram);
00040   DatagramUDPHeader(const void *data);
00041 
00042   INLINE int get_datagram_checksum() const;
00043   INLINE string get_header() const;
00044 
00045   bool verify_datagram(const NetDatagram &datagram) const;
00046 
00047 private:
00048   // The actual data for the header is stored (somewhat recursively)
00049   // in its own NetDatagram object.  This is just for convenience of
00050   // packing and unpacking the header.
00051   NetDatagram _header;
00052 };
00053 
00054 #include "datagramUDPHeader.I"
00055 
00056 #endif
00057 
00058 
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