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Old 02-20-2009, 10:04 AM
"Dake K. Odzangba"
 
Default Bittorrent problems

Hi,

Here's the problem... Transmission tells me I've only been able to download 34 MB of this torrent I've been downloading for ages yet the activiy info in the Connection Properties window tells me I've received 928 MB. There were no other significant downloads during the period I've been monitoring the traffic but I've noticed quite a few tcp retransmission entries in wireshark's ouput. What could be causing this?



Odzangba

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Old 02-20-2009, 11:47 AM
"Flynn, Steve (L & P - IT)"
 
Default Bittorrent problems

> Here's the problem... Transmission tells me I've only been able to
> download 34 MB of this torrent I've been downloading for ages yet the
> activiy info in the Connection Properties window tells me I've
received
> 928 MB. There were no other significant downloads during the period
I've
> been monitoring the traffic but I've noticed quite a few tcp
> retransmission entries in wireshark's ouput. What could be causing
this?

The Bittorrent protocol ensures that only data which matches it's
checksum is stored to disk. If you've only managed to get 34 meg out of
928 meg saved, then this may be the problem - something is sending you
corrupted data or something is corrupting the data en route.

Which torrent are you using to control the download?

I don't have a Transmission client available to me at the moment but I
believe you can view how much data has been re-requested as it's been
bad by looking at the stats of the transfer. Certainly Azureus can show
you this and I believe Transmission can also - I'll check when I return
home.

S.

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Old 02-22-2009, 11:25 PM
"Odzangba K. Dake"
 
Default Bittorrent problems

On Friday 20 February 2009 12:47:18 Flynn, Steve (L & P - IT) wrote:
> The Bittorrent protocol ensures that only data which matches it's
> checksum is stored to disk. If you've only managed to get 34 meg out of
> 928 meg saved, then this may be the problem - something is sending you
> corrupted data or something is corrupting the data en route.
>
> Which torrent are you using to control the download?

Sorry about the delay in responding... was out of town for the weekend. If the
question is what bittorrent client am I using, Transmission.

> I don't have a Transmission client available to me at the moment but I
> believe you can view how much data has been re-requested as it's been
> bad by looking at the stats of the transfer. Certainly Azureus can show
> you this and I believe Transmission can also - I'll check when I return
> home.

I'll monitor the download over the next few hours and see if the problem
persists.

Thanks

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