127 lines
5.8 KiB
C++
127 lines
5.8 KiB
C++
//
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// Copyright 2020 Electronic Arts Inc.
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//
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is free
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// software: you can redistribute it and/or modify it under the terms of
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// the GNU General Public License as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed
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// in the hope that it will be useful, but with permitted additional restrictions
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// under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT
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// distributed with this program. You should have received a copy of the
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// GNU General Public License along with permitted additional restrictions
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// with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
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/* $Header: F:\projects\c&c\vcs\code\noseqcon.h_v 1.13 01 Mar 1996 17:32:42 JOE_BOSTIC $ */
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/***************************************************************************
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** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S **
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***************************************************************************
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* *
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* Project Name : Command & Conquer *
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* *
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* File Name : NOSEQCON.H *
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* *
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* Programmer : Bill Randolph *
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* *
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* Start Date : December 19, 1994 *
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* *
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* Last Update : April 9, 1995 [BR] *
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* *
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*-------------------------------------------------------------------------*
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* *
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* This class provides a "Non-Sequenced" ACK/Retry approach to packet *
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* transmission. It sends out as many packets as are in the queue, whose *
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* resend delta times have expired; and it ACK's any packets its received *
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* who haven't been ACK'd yet. Thus, order of delivery is NOT guaranteed; *
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* however, the performance is better than the Sequenced approach. *
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* *
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* A derived class must provide: *
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* - Init: Initialization of any hardware-specific values. *
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* - Send: a hardware-dependent send routine. *
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* *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#ifndef NONSEQCONN_H
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#define NONSEQCONN_H
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/*
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********************************* Includes **********************************
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*/
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#include "connect.h"
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#include "combuf.h"
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/*
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***************************** Class Declaration *****************************
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*/
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class NonSequencedConnClass : public ConnectionClass
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{
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/*
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---------------------------- Public Interface ----------------------------
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*/
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public:
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/*.....................................................................
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Constructor/destructor.
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.....................................................................*/
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NonSequencedConnClass (int numsend, int numrecieve, int maxlen,
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unsigned short magicnum, unsigned long retry_delta,
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unsigned long max_retries, unsigned long timeout);
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virtual ~NonSequencedConnClass ();
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/*.....................................................................
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Initialization.
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.....................................................................*/
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virtual void Init (void);
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/*.....................................................................
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Send/Receive routines.
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.....................................................................*/
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virtual int Send_Packet (void * buf, int buflen, int ack_req);
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virtual int Receive_Packet (void * buf, int buflen);
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virtual int Get_Packet (void * buf, int *buflen);
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/*.....................................................................
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The packet "queue"; this non-sequenced version isn't really much of
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a queue, but more of a repository.
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.....................................................................*/
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CommBufferClass *Queue;
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/*
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-------------------------- Protected Interface ---------------------------
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*/
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protected:
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/*.....................................................................
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Routines to service the Send & Receive queues.
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.....................................................................*/
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virtual int Service_Send_Queue (void);
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virtual int Service_Receive_Queue (void);
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/*.....................................................................
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Running totals of # of packets we send & receive which require an ACK,
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and those that don't.
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.....................................................................*/
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unsigned long NumRecNoAck;
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unsigned long NumRecAck;
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unsigned long NumSendNoAck;
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unsigned long NumSendAck;
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/*.....................................................................
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This is the ID of the last consecutively-received packet; anything older
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than this, we know is a resend. Anything newer than this MUST be lying
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around in the Queue for us to detect it as a resend.
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.....................................................................*/
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unsigned long LastSeqID;
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/*.....................................................................
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This is the ID of the PACKET_DATA_ACK packet we read last; it ensures
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that the application reads that type of packet in order.
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.....................................................................*/
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unsigned long LastReadID;
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};
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#endif
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