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First implementation of per-chunk CRC32 check. This is triggered

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- by the right-click+Force Check on files.
- when a global hash on a downloaded file does not match the announced hash.

When a CRC map check is ordered, the CRC map is requested to one of the sources for the current file download.
When received, all downloaded chunks are checked w.r.t the reference CRC and marked as not done if the CRCs do not match.
The exchange of CRC32 map and requests has been tested, as well as CRC map checking during download (force check).

To be implemented soon:
    - caching of CRC32 maps (although these are fast to compute)
    - CRC32 map packets for normal downloads. For now these work only for turtle tunnels.
    - handling of errors if the CRC never comes. For now, the download will stay stuck in "Checking..." mode.

So, don't play too much with the force check feature for now...





git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@3310 b45a01b8-16f6-495d-af2f-9b41ad6348cc
This commit is contained in:
csoler 2010-07-21 23:14:10 +00:00
parent db034b026f
commit 8bfc74485a
27 changed files with 1012 additions and 118 deletions
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8
libretroshare/src/turtle/p3turtle.h
View file

@ -289,6 +289,12 @@ class p3turtle: public p3Service, public pqiMonitor, public RsTurtle,/* public f
/// Send a chunk map of this file to the given peer
void sendChunkMap(const std::string& peerId, const std::string& hash,const CompressedChunkMap& cmap) ;
/// Send a request for the crc32 map of this file to the given peer
void sendCRC32MapRequest(const std::string& peerId, const std::string& hash) ;
/// Send a crc32 map of this file to the given peer
void sendCRC32Map(const std::string& peerId, const std::string& hash,const CRC32Map& cmap) ;
private:
//--------------------------- Admin/Helper functions -------------------------//
@ -338,6 +344,8 @@ class p3turtle: public p3Service, public pqiMonitor, public RsTurtle,/* public f
void handleRecvFileData(RsTurtleFileDataItem *item);
void handleRecvFileMapRequest(RsTurtleFileMapRequestItem*);
void handleRecvFileMap(RsTurtleFileMapItem*);
void handleRecvFileCRC32MapRequest(RsTurtleFileCrcRequestItem*);
void handleRecvFileCRC32Map(RsTurtleFileCrcItem*);
//------ Functions connecting the turtle router to other components.----------//