llxfer.h
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- /**
- * @file llxfer.h
- * @brief definition of LLXfer class for a single xfer
- *
- * $LicenseInfo:firstyear=2001&license=viewergpl$
- *
- * Copyright (c) 2001-2010, 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://secondlifegrid.net/programs/open_source/licensing/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://secondlifegrid.net/programs/open_source/licensing/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.
- * $/LicenseInfo$
- */
- #ifndef LL_LLXFER_H
- #define LL_LLXFER_H
- #include "message.h"
- #include "lltimer.h"
- const S32 LL_XFER_LARGE_PAYLOAD = 7680;
- typedef enum ELLXferStatus {
- e_LL_XFER_UNINITIALIZED,
- e_LL_XFER_REGISTERED, // a buffer which has been registered as available for a request
- e_LL_XFER_PENDING, // a transfer which has been requested but is waiting for a free slot
- e_LL_XFER_IN_PROGRESS,
- e_LL_XFER_COMPLETE,
- e_LL_XFER_ABORTED,
- e_LL_XFER_NONE
- } ELLXferStatus;
- class LLXfer
- {
- private:
- protected:
- S32 mChunkSize;
-
- public:
- LLXfer *mNext;
- U64 mID;
- S32 mPacketNum;
- LLHost mRemoteHost;
- S32 mXferSize;
- char *mBuffer;
- U32 mBufferLength;
- U32 mBufferStartOffset;
- BOOL mBufferContainsEOF;
- ELLXferStatus mStatus;
- BOOL mWaitingForACK;
- void (*mCallback)(void **,S32,LLExtStat);
- void **mCallbackDataHandle;
- S32 mCallbackResult;
- LLTimer ACKTimer;
- S32 mRetries;
- static const U32 XFER_FILE;
- static const U32 XFER_VFILE;
- static const U32 XFER_MEM;
- private:
- protected:
- public:
- LLXfer (S32 chunk_size);
- virtual ~LLXfer();
- void init(S32 chunk_size);
- virtual void cleanup();
- virtual S32 startSend (U64 xfer_id, const LLHost &remote_host);
- virtual void sendPacket(S32 packet_num);
- virtual void sendNextPacket();
- virtual void resendLastPacket();
- virtual S32 processEOF();
- virtual S32 startDownload();
- virtual S32 receiveData (char *datap, S32 data_size);
- virtual void abort(S32);
- virtual S32 suck(S32 start_position);
- virtual S32 flush();
-
- virtual S32 encodePacketNum(S32 packet_num, BOOL is_eof);
- virtual void setXferSize (S32 data_size);
- virtual S32 getMaxBufferSize();
- virtual std::string getFileName();
- virtual U32 getXferTypeTag();
- friend std::ostream& operator<< (std::ostream& os, LLXfer &hh);
- };
- #endif