Panda3D
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datagramTCPHeader.h
00001 // Filename: datagramTCPHeader.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 DATAGRAMTCPHEADER_H
00016 #define DATAGRAMTCPHEADER_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_tcp16_header_size = sizeof(PN_uint16);
00026 static const int datagram_tcp32_header_size = sizeof(PN_uint32);
00027 
00028 class NetDatagram;
00029 
00030 ////////////////////////////////////////////////////////////////////
00031 //       Class : DatagramTCPHeader
00032 // Description : A class that encapsulates the extra bytes that are
00033 //               sent in front of each datagram to identify it when it
00034 //               is sent on TCP.  This is similar to
00035 //               DatagramUDPHeader, except it does not include a
00036 //               checksum, since this is unnecessary on UDP.
00037 ////////////////////////////////////////////////////////////////////
00038 class EXPCL_PANDA_NET DatagramTCPHeader {
00039 public:
00040   DatagramTCPHeader(const NetDatagram &datagram, int header_size);
00041   DatagramTCPHeader(const void *data, int header_size);
00042 
00043   int get_datagram_size(int header_size) const;
00044   INLINE string get_header() const;
00045 
00046   bool verify_datagram(const NetDatagram &datagram, int header_size) const;
00047 
00048 private:
00049   // The actual data for the header is stored (somewhat recursively)
00050   // in its own NetDatagram object.  This is just for convenience of
00051   // packing and unpacking the header.
00052   NetDatagram _header;
00053 };
00054 
00055 #include "datagramTCPHeader.I"
00056 
00057 #endif
00058 
00059 
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