mIRC Home    About    Download    Register    News    Help

Print Thread
Resume rollback #50875 23/09/03 09:38 AM
Joined: May 2003
Posts: 12
Venom_IL Offline OP
Pikka bird
OP Offline
Pikka bird
Joined: May 2003
Posts: 12
resume roll back means that when a download is resumed, its not resumed from the exact same spot it stopped, but rather some odd 20 KB's before that. this prevents download corruption (from packets sent from dying bots, internet connection errors etc) and works very well in DC++. the only IRC Client that supports this AFAIK is HydraIRC but it lacks other things. would be great if anyone knows of a client that supports this feature and the "/timer" one, at least until its implemented in mIRC which is my favorite wink

Thanks =)




------------------------------------
Or should I call you... Peter Parker ?
Re: Resume rollback #50876 23/09/03 01:49 PM
Joined: Feb 2003
Posts: 2,641
Raccoon Offline
Hoopy frood
Offline
Hoopy frood
Joined: Feb 2003
Posts: 2,641
You could write your own rollback with a bit of effort.

When the DCC fails, remove 20K off the top of the file and resume the DCC.

/btrunc $filename $iif($calc($file($filename).size - 20 * 1024 ) > 0, $ifmatch, 0)

If you wish to verify the integrity of the old data to the resume data, dump the 20K to a temporary file and note the size (position) of the file you're resuming. You can then read the temporary file and the 20K sector of the new file into Binary Variables and compare them with $crc or $md5 (I'd use $crc because $md5 has a bug). This can be done after the DCC completes or after 20K has been resumed while it still downloads.

I'm not sure what you mean by "/timer one".

- Raccoon

Last edited by Raccoon; 23/09/03 02:04 PM.

Well. At least I won lunch.
Good philosophy, see good in bad, I like!
Re: Resume rollback #50877 23/09/03 01:57 PM
Joined: Dec 2002
Posts: 25
V
v0id Offline
Ameglian cow
Offline
Ameglian cow
V
Joined: Dec 2002
Posts: 25
40.A dcc resume now chops off the last 8192 bytes of a file in case
the end of the file was corrupted during a previous transfer.

versions.txt

Re: Resume rollback #50878 23/09/03 02:28 PM
Joined: May 2003
Posts: 12
Venom_IL Offline OP
Pikka bird
OP Offline
Pikka bird
Joined: May 2003
Posts: 12
well apparantly 8 k isn't enough.. as ive had my share of corrupted downloads..

didnt notice it in the changelog though because i was looking for "rollback".. impossible for me to guess what the devs would call it and its quite a long list, so i just tried the "official" term but thanks for the info

Raccoon - the entire idea is that it's done automatically.. chopping off 20 k isn't the hard part and there's even a simple prog that does just that and its called, well, "cutoff"

is there a way to script automatic cutoff upon a failed dcc ?

btw, by "/timer" i mean just that - the mIRC /timer command, i.e. im looking for a client with both rollback and a command equivelent to mIRC's /timer, assuming it can't be done through mIRC

thanks :tongue:





------------------------------------
Or should I call you... Peter Parker ?
Re: Resume rollback #50879 23/09/03 02:57 PM
Joined: Feb 2003
Posts: 2,641
Raccoon Offline
Hoopy frood
Offline
Hoopy frood
Joined: Feb 2003
Posts: 2,641
On *:GETFAIL:*: {
btrunc $filename $iif($calc($file($filename).size - 20 * 1024 ) > 0, $ifmatch, 0)
}


Well. At least I won lunch.
Good philosophy, see good in bad, I like!
Re: Resume rollback #50880 24/09/03 05:48 AM
Joined: May 2003
Posts: 12
Venom_IL Offline OP
Pikka bird
OP Offline
Pikka bird
Joined: May 2003
Posts: 12
forgive me for my great n00bness, but where do i put this ? grin

will it work EVERY time, whenever ANY file failes ? even if the same file failes twice etc ?

thanks wink





------------------------------------
Or should I call you... Peter Parker ?
Re: Resume rollback #50881 24/09/03 05:55 AM
Joined: Feb 2003
Posts: 3,432
S
sparta Offline
Hoopy frood
Offline
Hoopy frood
S
Joined: Feb 2003
Posts: 3,432
You put it in your Remote.. ALT + R open the remote section..


if ($me != tired) { return } | else { echo -a Get a pot of coffee now $+($me,.) }
Re: Resume rollback #50882 24/09/03 07:50 AM
Joined: Feb 2003
Posts: 2,641
Raccoon Offline
Hoopy frood
Offline
Hoopy frood
Joined: Feb 2003
Posts: 2,641
... and yes, every time.

It truncates 20K off the file, each time a download or resume fails. This may or may not include an additional 5K as was pointed out above when mIRC actually begins resuming.

- Raccoon


Well. At least I won lunch.
Good philosophy, see good in bad, I like!
Re: Resume rollback #50883 24/09/03 11:17 AM
Joined: May 2003
Posts: 12
Venom_IL Offline OP
Pikka bird
OP Offline
Pikka bird
Joined: May 2003
Posts: 12
You people are class A smile

so let me get this straight - i just paste this exact text:

On *:GETFAIL:*: {
btrunc $filename $iif($calc($file($filename).size - 100 * 1024 ) > 0, $ifmatch, 0)
}

in the ALT+R window (mIRC editor, Remote) press ok and that's all there is to it ?

(Notice I changed it to 100K, what can I say I'm a paranoid grin )

Last edited by Venom_IL; 24/09/03 11:24 AM.



------------------------------------
Or should I call you... Peter Parker ?
Re: Resume rollback #50884 24/09/03 09:10 PM
Joined: Feb 2003
Posts: 2,641
Raccoon Offline
Hoopy frood
Offline
Hoopy frood
Joined: Feb 2003
Posts: 2,641
You've got it.

Note, I haven't actually tested the code, but I'm pretty confident it works.

Let me know if it starts a fire or anything. grin


Well. At least I won lunch.
Good philosophy, see good in bad, I like!
Re: Resume rollback #50885 24/09/03 10:22 PM
Joined: May 2003
Posts: 12
Venom_IL Offline OP
Pikka bird
OP Offline
Pikka bird
Joined: May 2003
Posts: 12
You be da man

at first it didnt work, but then i checked "monitor file changes", listen to "ctcp", "events", "raw"

so proud of myself that i found it out all alone grin

you know its funny, ive been looking for this feature for about a month, trying a zillion clients, begging hydra to add the "/timer" command (he had rollback but without /timer a client is useless to me).. scouring google etc.. when all of this time it couldve been done so simply...

Thanks again, and maximum respect cool




------------------------------------
Or should I call you... Peter Parker ?