[freenet-support] Question about handling churn in FreeNet

[Nawfal Abbassi Saber]

Hi FreeNet,

I'm doing a research about peer to peer file storage systems and i would
like to know if the system FreeNet has some mechanisms to deal with churn.

Cordially

Nawfal.
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[freenet-support] Censorship

[Music Backup]

Hello, I have all of the technical logs and screenshots I need to verify that I 
am being targeted as part of some type of hack, however, my web searching 
always points me in the wrong direction with many times ending up in another 
hacked space provided by the malicious hacker. I went through enough network 
security classes to know what I am and what I should be seeing. I could just 
use some resources like lawyers who may be familiar with and knowledgeable 
about such matters. Any information that you can provide would be appreciated.

Sent from my iPhone
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[freenet-support] technical help

[silentronin05]

Decided to give freenet a try, trid to install it to my desktop but 
didnt like all the files so i tried to create a file for freenet and 
drag them there. Now im unable to uninstall freenet, or even access it 
at all. im doing this on a linux machine, is there a command i can type 
into a terminal in order to uninstall and re-install again?
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[freenet-support] (no subject)

[Stefan Breuseker]

How can i install freenet on Samsung ga last tab e
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[freenet-support] Dowload temporary files error

[AlanFWHEA]

Hello,
When downloading a file in freenet I often have to restart which until  
recently was not a problem. However, now after the restart I get about 0.2 of  
the file downloaded and the download reads "Ttemporaty files error" with an  
option to restart or remove the file from the list. I get the same reaction 
 whether I use Google or Firefox as my browser. Any advice would be 
appreciated. 
 
Alan  Francis
alanfw...@aol.com
(860)232-4700 H
(215)292-2817  C___
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Re: [freenet-support] Question about handling churn in FreeNet

[Bert Massop]

On Wed, Jan 6, 2016 at 10:59 AM, Nawfal Abbassi Saber
 wrote:
> Hi FreeNet,
>
> I'm doing a research about peer to peer file storage systems and i would
> like to know if the system FreeNet has some mechanisms to deal with churn.
>

Short answer: yes, Freenet has mechanisms to deal with network churn


I suppose you'd also like to learn something about those mechanism, so
let me introduce you to the basic concepts.

Most files on Freenet are stored with several layers of redundancy.
1. On the lowest level, for large files, Freenet uses segmentation
with forward error correction to keep entire files available when some
of their segments are unavailable on the network.
2. Freenet nodes store newly inserted data they consider to match
their own location closely enough, so a single segment may end up
stored on multiple nodes.
3. When a segment is retrieved, it will be cached by most of the nodes
that relay the data to the requester.
4. After a large file is retrieved, some if its non-retrievable
segments may with probability be recalculated and re-inserted by the
requester, further restoring the reliability of the file.

As for request routing, Freenet maintains a small-world network
topology that allows for efficient routing. This topology can be
maintained even under the presence of network churn. How this works
depends on the particular mode of operation of Freenet, e.g. opennet
vs. darknet, but it boils down to path folding and location swapping
strategies.

For more information, especially on the ongoing work of maintaining
the network topology, please refer to the literature presented on the
Freenet website [0].

Kind regards,
Bert

[0]: https://freenetproject.org/about.html#papers
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Re: [freenet-support] Censorship

[Bert Massop]

On Wed, Jan 13, 2016 at 8:25 PM, Music Backup  wrote:
> Hello, I have all of the technical logs and screenshots I need to verify that 
> I am being targeted as part of some type of hack, however, my web searching 
> always points me in the wrong direction with many times ending up in another 
> hacked space provided by the malicious hacker. I went through enough network 
> security classes to know what I am and what I should be seeing. I could just 
> use some resources like lawyers who may be familiar with and knowledgeable 
> about such matters. Any information that you can provide would be appreciated.

The mailing list to which you addressed your request is the support
mailing list for the Freenet project [0]. Freenet is a free software
project providing a decentralized anonymous storage platform.

I fail to see how your request is relevant here. If you are indeed in
need of support for installing or using Freenet, please clarify your
questions.

Kind regards,
Bert

[0]: https://freenetproject.org/
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Re: [freenet-support] Dowload temporary files error

[Bert Massop]

On Wed, Jan 13, 2016 at 5:14 PM,   wrote:
> Hello,
> When downloading a file in freenet I often have to restart which until
> recently was not a problem. However, now after the restart I get about 0.2
> of the file downloaded and the download reads "Ttemporaty files error" with
> an option to restart or remove the file from the list. I get the same
> reaction whether I use Google or Firefox as my browser. Any advice would be
> appreciated.

The message "Temporary files error" indicates that Freenet failed to
read from or write to a bucket, which are files that Freenet uses to
store temporary data. As such, this might indicate an internal error,
but it might also be caused by lack of free disk space or file system
corruption. As you have already observed, said errors are indeed
unlikely to be related to your choice of browser.

You might want to try removing the download from your download queue
and restarting the download manually.

If your problem persists, your log files may contain additional
information about the cause. Please review logs/freenet-latest.log in
your Freenet installation directory for possible clues after you again
encounter this problem (you might want to wait a few minutes before
reviewing that file, log messages are not written to disk
immediately).
If you believe this is a bug, please file a bug at our bug tracker
[0]. Make sure to have read the bug reporting guidelines [1]
beforehand.

Kind regards,
Bert

[0]: https://bugs.freenetproject.org/
[1]: https://wiki.freenetproject.org/Reporting_bugs
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