124 lines
3.1 KiB
C++
124 lines
3.1 KiB
C++
/**
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* @file llxfer.h
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* @brief definition of LLXfer class for a single xfer
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*
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* $LicenseInfo:firstyear=2001&license=viewergpl$
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*
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* Copyright (c) 2001-2009, Linden Research, Inc.
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*
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* Second Life Viewer Source Code
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* The source code in this file ("Source Code") is provided by Linden Lab
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* to you under the terms of the GNU General Public License, version 2.0
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* ("GPL"), unless you have obtained a separate licensing agreement
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* ("Other License"), formally executed by you and Linden Lab. Terms of
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* the GPL can be found in doc/GPL-license.txt in this distribution, or
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* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
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*
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* There are special exceptions to the terms and conditions of the GPL as
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* it is applied to this Source Code. View the full text of the exception
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* in the file doc/FLOSS-exception.txt in this software distribution, or
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* online at
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* http://secondlifegrid.net/programs/open_source/licensing/flossexception
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*
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* By copying, modifying or distributing this software, you acknowledge
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* that you have read and understood your obligations described above,
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* and agree to abide by those obligations.
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*
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* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
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* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
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* COMPLETENESS OR PERFORMANCE.
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* $/LicenseInfo$
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*/
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#ifndef LL_LLXFER_H
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#define LL_LLXFER_H
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#include "message.h"
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#include "lltimer.h"
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const S32 LL_XFER_LARGE_PAYLOAD = 7680;
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typedef enum ELLXferStatus {
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e_LL_XFER_UNINITIALIZED,
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e_LL_XFER_REGISTERED, // a buffer which has been registered as available for a request
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e_LL_XFER_PENDING, // a transfer which has been requested but is waiting for a free slot
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e_LL_XFER_IN_PROGRESS,
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e_LL_XFER_COMPLETE,
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e_LL_XFER_ABORTED,
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e_LL_XFER_NONE
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} ELLXferStatus;
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class LLXfer
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{
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private:
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protected:
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S32 mChunkSize;
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public:
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LLXfer *mNext;
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U64 mID;
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S32 mPacketNum;
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LLHost mRemoteHost;
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S32 mXferSize;
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char *mBuffer;
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U32 mBufferLength;
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U32 mBufferStartOffset;
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BOOL mBufferContainsEOF;
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ELLXferStatus mStatus;
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BOOL mWaitingForACK;
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void (*mCallback)(void **,S32,LLExtStat);
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void **mCallbackDataHandle;
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S32 mCallbackResult;
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LLTimer ACKTimer;
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S32 mRetries;
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static const U32 XFER_FILE;
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static const U32 XFER_VFILE;
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static const U32 XFER_MEM;
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private:
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protected:
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public:
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LLXfer (S32 chunk_size);
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virtual ~LLXfer();
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void init(S32 chunk_size);
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virtual void cleanup();
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virtual S32 startSend (U64 xfer_id, const LLHost &remote_host);
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virtual void sendPacket(S32 packet_num);
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virtual void sendNextPacket();
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virtual void resendLastPacket();
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virtual S32 processEOF();
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virtual S32 startDownload();
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virtual S32 receiveData (char *datap, S32 data_size);
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virtual void abort(S32);
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virtual S32 suck(S32 start_position);
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virtual S32 flush();
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virtual S32 encodePacketNum(S32 packet_num, BOOL is_eof);
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virtual void setXferSize (S32 data_size);
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virtual S32 getMaxBufferSize();
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virtual std::string getFileName();
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virtual U32 getXferTypeTag();
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friend std::ostream& operator<< (std::ostream& os, LLXfer &hh);
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};
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#endif
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