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/**
* @file llpacketack.h
* @brief Reliable UDP helpers for the message system.
*
* Copyright (c) 2001-2007, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlife.com/developers/opensource/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at http://secondlife.com/developers/opensource/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
*/
#ifndef LL_LLPACKETACK_H
#define LL_LLPACKETACK_H
#include <cstring>
#include <stdio.h>
#include "llerror.h"
#include "lltimer.h"
#include "llhost.h"
//class LLPacketAck
//{
//public:
// LLHost mHost;
// TPACKETID mPacketID;
//public:
// LLPacketAck(const LLHost &host, TPACKETID packet_id)
// {
// mHost = host;
// mPacketID = packet_id;
// };
// ~LLPacketAck(){};
//};
class LLReliablePacketParams
{
public:
LLHost mHost;
S32 mRetries;
BOOL mPingBasedRetry;
F32 mTimeout;
void (*mCallback)(void **,S32);
void **mCallbackData;
char *mMessageName;
public:
LLReliablePacketParams()
{
clear();
};
~LLReliablePacketParams() { };
void clear()
{
mHost.invalidate();
mRetries = 0;
mPingBasedRetry = TRUE;
mTimeout = 0.f;
mCallback = NULL;
mCallbackData = NULL;
mMessageName = NULL;
};
void set ( const LLHost &host, S32 retries, BOOL ping_based_retry,
F32 timeout,
void (*callback)(void **,S32), void **callback_data, char *name )
{
mHost = host;
mRetries = retries;
mPingBasedRetry = ping_based_retry;
mTimeout = timeout;
mCallback = callback;
mCallbackData = callback_data;
mMessageName = name;
};
};
class LLReliablePacket
{
public:
LLReliablePacket(S32 socket, U8 *buf_ptr, S32 buf_len, LLReliablePacketParams *params) :
mBuffer(NULL),
mBufferLength(0)
{
if (params)
{
mHost = params->mHost;
mRetries = params->mRetries;
mPingBasedRetry = params->mPingBasedRetry;
mTimeout = params->mTimeout;
mCallback = params->mCallback;
mCallbackData = params->mCallbackData;
mMessageName = params->mMessageName;
}
else
{
mRetries = 0;
mPingBasedRetry = TRUE;
mTimeout = 0.f;
mCallback = NULL;
mCallbackData = NULL;
mMessageName = NULL;
}
mExpirationTime = (F64)((S64)totalTime())/1000000.0 + mTimeout;
mPacketID = buf_ptr[1] + ((buf_ptr[0] & 0x0f ) * 256);
if (sizeof(TPACKETID) == 4)
{
mPacketID *= 256;
mPacketID += buf_ptr[2];
mPacketID *= 256;
mPacketID += buf_ptr[3];
}
mSocket = socket;
if (mRetries)
{
mBuffer = new U8[buf_len];
if (mBuffer != NULL)
{
memcpy(mBuffer,buf_ptr,buf_len); /*Flawfinder: ignore*/
mBufferLength = buf_len;
}
}
};
~LLReliablePacket()
{
mCallback = NULL;
delete [] mBuffer;
mBuffer = NULL;
};
friend class LLCircuitData;
protected:
S32 mSocket;
LLHost mHost;
S32 mRetries;
BOOL mPingBasedRetry;
F32 mTimeout;
void (*mCallback)(void **,S32);
void **mCallbackData;
char *mMessageName;
U8 *mBuffer;
S32 mBufferLength;
TPACKETID mPacketID;
F64 mExpirationTime;
};
#endif
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