[ ijbswa-Feature Requests-3465376 ] speedup single thread download

Feature Requests item #3465376, was opened at 2011-12-25 05:55
Message generated for change (Comment added) made by fabiankeil
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https://sourceforge.net/tracker/?func=detail&atid=361118&aid=3465376&group_id=11118

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Category: funct: other
Group: future
>Status: Pending
Resolution: None
Priority: 5
Private: No
Submitted By: ilu (lyun)
Assigned to: Fabian Keil (fabiankeil)
Summary: speedup single thread download

Initial Comment:
Some applications(itunes for example) download with one thread, it is very very slow(<50KB/s) sometimes, it will take many hours to download a 100+MB app.

I think while privoxy get a request for a large file, privoxy can fork some threads the prefetch the large file. That should be able to speed up the download.

Is that possible?
Could you please add this feature.

Thank you.

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>Comment By: Fabian Keil (fabiankeil)
Date: 2011-12-31 05:16

Message:
I agree that a feature like this could be useful for some users, but if
there's nobody around to implement it, it's unlikely to happen.

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Comment By: ilu (lyun)
Date: 2011-12-27 05:53

Message:
Thank you for your reply.

Many app store, apple's iTunes store, sony's PSN and etc, can only use they
own application to download (I think).  So the other managers don't work.

And these store should have a large group servers, or they use CDN like
Akamai. Many server should have the same file. 
I think they should not have the speed limit.  But I don't know whether
these servers support range requests.

I think this feature would help to improved the web browsing also. It
should be faster.


Modifying/patch may be too difficult for me:( 


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Comment By: Fabian Keil (fabiankeil)
Date: 2011-12-26 11:28

Message:
The number of threads doesn't necessarily influence the speed of the
download.

If the server has a per-connection speed limit, it may be possible to work
around that by opening multiple connection at the same time (which doesn't
require using more that one thread) to request different parts of the
downloaded resource in parallel, but it will only work if the server
supports range requests.

Many download managers already support this.

Modifying Privoxy to do that would certainly be possible and patches are
always welcome.

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=361118&aid=3465376&group_id=11118

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