mirror of
https://github.com/RetroShare/RetroShare.git
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d43a131c04
- servers now compute the map in a separate thread - CRC32Maps are kept in cache for 30 mins - CRC32Maps requests cannot be used to overflood a server anymore since their number is limited. - Transfer modules now send keep alive packets to maintain tunnels when asking for a CRC32Map git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@4661 b45a01b8-16f6-495d-af2f-9b41ad6348cc
113 lines
3.5 KiB
C++
113 lines
3.5 KiB
C++
/*
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* libretroshare/src/ft ftFileProvider.h
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*
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* File Transfer for RetroShare.
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*
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* Copyright 2008 by Robert Fernie.
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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 Library General Public
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* License Version 2 as published by the Free Software Foundation.
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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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA.
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*
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* Please report all bugs and problems to "retroshare@lunamutt.com".
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*
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*/
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#ifndef FT_FILE_PROVIDER_HEADER
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#define FT_FILE_PROVIDER_HEADER
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/*
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* ftFileProvider.
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*
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*/
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#include <iostream>
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#include <stdint.h>
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#include "util/rsthreads.h"
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#include "retroshare/rsfiles.h"
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class ftFileProvider
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{
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public:
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ftFileProvider(const std::string& path, uint64_t size, const std::string& hash);
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virtual ~ftFileProvider();
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virtual bool getFileData(const std::string& peer_id,uint64_t offset, uint32_t &chunk_size, void *data);
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virtual bool FileDetails(FileInfo &info);
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std::string getHash();
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uint64_t getFileSize();
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bool fileOk();
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// Provides a client for the map of chunks actually present in the file. If the provider is also
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// a file creator, because the file is actually being downloaded, then the map may be partially complete.
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// Otherwize, a plain map is returned.
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//
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virtual void getAvailabilityMap(CompressedChunkMap& cmap) ;
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// a ftFileProvider feeds a distant peer. To display what the peers already has, we need to store/read this info.
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void getClientMap(const std::string& peer_id,CompressedChunkMap& cmap,bool& map_is_too_old) ;
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void setClientMap(const std::string& peer_id,const CompressedChunkMap& cmap) ;
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// Removes inactive peers from the client list. Returns true if all peers have been removed.
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//
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bool purgeOldPeers(time_t now,uint32_t max_duration) ;
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const std::string& fileHash() const { return hash ; }
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const std::string& fileName() const { return file_name ; }
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uint64_t fileSize() const { return mSize ; }
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protected:
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virtual int initializeFileAttrs(); /* does for both */
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uint64_t mSize;
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std::string hash;
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std::string file_name;
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FILE *fd;
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/*
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* Structure to gather statistics FIXME: lastRequestor - figure out a
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* way to get last requestor (peerID)
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*/
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class PeerUploadInfo
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{
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public:
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PeerUploadInfo()
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: req_loc(0),req_size(1), lastTS_t(0), transfer_rate(0), total_size(0), client_chunk_map_stamp(0) {}
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void updateStatus(uint64_t offset,uint32_t data_size,time_t now) ;
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uint64_t req_loc;
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uint32_t req_size;
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time_t lastTS_t; // used for estimating transfer rate.
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time_t lastTS; // last update time (for purging)
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// these two are used for speed estimation
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float transfer_rate ;
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uint32_t total_size ;
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// Info about what the downloading peer already has
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CompressedChunkMap client_chunk_map ;
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time_t client_chunk_map_stamp ;
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};
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// Contains statistics (speed, peer name, etc.) of all uploading peers for that file.
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//
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std::map<std::string,PeerUploadInfo> uploading_peers ;
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/*
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* Mutex Required for stuff below
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*/
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RsMutex ftcMutex;
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};
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#endif // FT_FILE_PROVIDER_HEADER
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