"skip hash check" is a very useful feature for seeding identical big torrents on different sites. It exists in uTorrent but the offical release of transmission doesn't support this function.
In this project, I modified less than 10 lines of code to add this feature for transmission-2.92. It's very simple:
you can download source code from the offical site,modify the following changes and compile yourself. then replace /usr/bin/transmission-daemon with transmission-daemon in daemon directory after make
diff libtransmission/rpcimpl.c
388a389
> skiphash();
diff libtransmission/verify.c
41a42,46
> static bool skiphashcheck=false;
> void skiphash(){
> skiphashcheck=true;
> }
>
76c81
< if (filePos == 0 && fd == TR_BAD_SYS_FILE && fileIndex != prevFileIndex)
---
> if (!skiphashcheck && filePos == 0 && fd == TR_BAD_SYS_FILE && fileIndex != prevFileIndex)
95c100
< if (tr_sys_file_read_at (fd, buffer, bytesThisPass, filePos, &numRead, NULL) && numRead > 0)
---
> if (!skiphashcheck && tr_sys_file_read_at (fd, buffer, bytesThisPass, filePos, &numRead, NULL) && numRead > 0)
119c124
< hasPiece = !memcmp (hash, tor->info.pieces[pieceIndex].hash, SHA_DIGEST_LENGTH);
---
> hasPiece = skiphashcheck || !memcmp (hash, tor->info.pieces[pieceIndex].hash, SHA_DIGEST_LENGTH);
156a162,165
> if(skiphashcheck){
> skiphashcheck=false;
> tr_logAddTorInfo (tor, "%s", _("skip hash check"));
> }
this patch is for transmission-2.92, but for other version I think it will be similar
download the project and:
$ cd transmission-2.92
$ ./configure
$ make
$ sudo make install
if you have installed transmission-2.92, replace /usr/bin/transmission-daemon with transmission-daemon in daemon directory after make.
In the web interface: http://ip:9091/transmission/web/.
right click on ANY torrent, click Ask tracker for more peers and the CURRENT verifying torrent will be skipped for hash check.
- DON'T replace file if version of transmission installed is other than 2.92.
- Make a backup of
/usr/bin/transmission-daemonbefore replacing. - I have only tested transmission-2.92 on Centos 6.
- DON'T use this feature for cheating, you will be caught.