124 lines
3.0 KiB
C++
124 lines
3.0 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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* $LicenseInfo:firstyear=2001&license=viewerlgpl$
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* Second Life Viewer Source Code
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* Copyright (C) 2010, Linden Research, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation;
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* version 2.1 of the License only.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
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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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#include "llextendedstatus.h"
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const S32 LL_XFER_LARGE_PAYLOAD = 7680;
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const S32 LL_ERR_FILE_EMPTY = -44;
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const int LL_ERR_FILE_NOT_FOUND = -43;
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const int LL_ERR_CANNOT_OPEN_FILE = -42;
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const int LL_ERR_EOF = -39;
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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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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 closeFileHandle();
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virtual S32 reopenFileHandle();
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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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