Wasted.... in µTorrent

S

ssyar

Beginner
chk out this image.... can any 1 explains what is this.. . .. .. WASTED Data...
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I'm not completely sure, expert techies please correct me if i'm wrong.
"Hash-check failed" means, the data received did not match with the requested data. So it was discarded.
This can be reduced by limiting the number of peers you connect to.
 
Hash fails shouldn't really be that common, ie. you shouldn't get more than one or two with any download. What is more common is data that is discarded because it was sent to the wrong place, but even that shouldn't amount to more than 10% of a download.

So if you are getting a lot hash fails, or an extreme amount of discarded data then something is wrong. It could be network problems causing corruption (either on your or the sender's end), or someone could be purposefully sending you bad data. So check if everything is ok at your end, and try and find out which peer is sending the bad data, and snub/kick them.
 
well i have lower the rate of connected peer.... now ill chk what if it still continues

and in logger it is banning the IP from which i m getting FAILED HASH CHECK Piece..
 
You are getting swarmed. People are uploading more than they've actually downloaded resulting in unwanted data which needs to be trashed.

Don't keep the maximum connections setting so high (999 in your case). 500 works fine for most connections otherwise you actually lose speed always trying to accomodate more and more peers.
 
well ..

All the data which we dwnload via torrents .. we dnt get them in continuous pattern ..

We get all the data in chunks.. which might form any particular part in the whole file.

Wen we get all of these chunks .. all of them are integrated to form the file ..

When integrating .. a hash check is performed.. (in Limewire u mst hav seen the activity of checking file contents just before the status of the file is changed to 100% complete.

This is a similar act)

All the data is Hashed.. with each hash code block containing reference to the next hash code block.

(it may be possible tha the hash code block maybe connected with both the neighbours.. i am not too sure abt this ..Sorry )

This hash fail.. ("hash failure"). This is most likely caused by a bad router

Some routers implement a trick which is termed as game mode.

In this .. the routers actually go on rewriting internal and external IP address bytes within incoming and outgoing packets. This allows older games that hard-code IP addresses to function behind a NAT setup. However, when such an address-byte sequence is coincidentally present within a file being sent via the BitTorrent protocol, the router mistakenly rewrites the data. This changes the content of the packet, which fails hash-checking

So whenever this hash fail occurs.. the defected code is dwnloaded again and so it takes that mch more time ..

A few ways to minimize this is are.. :

There are several ways to fix or get around the problem:

1. Do not run your router in DMZ mode (where packets not explicitly forwarded are routed by default to a single machine),

as many routers seem to employ game mode-like mangling by default for DMZ-bound traffic.

You should enable explicit port-forwarding

2. Turn off the Game mode if enabled

3. If you have done the above two, try connecting directly to the Internet

4. Be sure to have all your latest OS patches

5. Make sure you have a decent firewall



Hope this helps.. :)
 
spacescreamer said:
well ..

All the data which we dwnload via torrents .. we dnt get them in continuous pattern ..

We get all the data in chunks.. which might form any particular part in the whole file.
Wen we get all of these chunks .. all of them are integrated to form the file ..
When integrating .. a hash check is performed.. (in Limewire u mst hav seen the activity of checking file contents just before the status of the file is changed to 100% complete.
This is a similar act)
All the data is Hashed.. with each hash code block containing reference to the next hash code block.
(it may be possible tha the hash code block maybe connected with both the neighbours.. i am not too sure abt this ..Sorry )

This hash fail.. ("hash failure"). This is most likely caused by a bad router
Some routers implement a trick which is termed as game mode.

In this .. the routers actually go on rewriting internal and external IP address bytes within incoming and outgoing packets. This allows older games that hard-code IP addresses to function behind a NAT setup. However, when such an address-byte sequence is coincidentally present within a file being sent via the BitTorrent protocol, the router mistakenly rewrites the data. This changes the content of the packet, which fails hash-checking

So whenever this hash fail occurs.. the defected code is dwnloaded again and so it takes that mch more time ..

A few ways to minimize this is are.. :

There are several ways to fix or get around the problem:

1. Do not run your router in DMZ mode (where packets not explicitly forwarded are routed by default to a single machine),
as many routers seem to employ game mode-like mangling by default for DMZ-bound traffic.
You should enable explicit port-forwarding
2. Turn off the Game mode if enabled
3. If you have done the above two, try connecting directly to the Internet
4. Be sure to have all your latest OS patches
5. Make sure you have a decent firewall


Hope this helps.. :)
Click to expand...
too much technical :| well waiting to get 100% soon
 
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