Author Topic: Really max size?  (Read 4035 times)

0 Members and 1 Guest are viewing this topic.

Offline totoro

  • Regular
  • **
  • Posts: 55
  • Karma: +2/-1
    • View Profile
Really max size?
« on: April 29, 2010, 08:09:34 PM »
So, we sharing some films in hd (films under copyleft  ;)). In the beginning we thought that the maximum size was 4.5 gigas. But we have lot of problems when a file have more than 4 gigas.

Wath is the real limit size for sharing a file on sn?

Offline blewzahr

  • Advanced
  • ***
  • Posts: 278
  • Karma: +21/-22
    • View Profile
Re: Really max size?
« Reply #1 on: April 29, 2010, 08:17:46 PM »
stealthnet uses sha512 hashes for the files. the sha512 algorithm doesnt have any filesize limit being regarded in finite time computation of the hash ;)

but the stealthnet protocol and the basic idea has 32bit limit, so 4gigabyte-1byte i suppose or something.

you can simply include and allow stealthnet to hash files larger than 4gig in size, only they wont be transferrable unless the stealthnet devs come up with new protocol-versions and enhancements of their software.

but the sha512 hash will be valid and wont change, unless they opt for some different hash computation algorithm, go for additional hashes, chunks or whatsoever.

cheers.

Offline Nemo

  • Global Moderator
  • Elite
  • *****
  • Posts: 1303
  • Karma: +27/-0
    • View Profile
Re: Really max size?
« Reply #2 on: April 30, 2010, 04:54:10 PM »
In the beginning we thought that the maximum size was 4.5 gigas. But we have lot of problems when a file have more than 4 gigas.

Wath is the real limit size for sharing a file on sn?
In the IT-world one gigabyte means two different things:
-hardware (harddisks, memory sticks, ...) is measured with one GByte = 10^9 Bytes
-software (partition size, file size, ...) is measured with one GB = 1024 MB = 1024 x 1024 kB = 1024 x 1024 x 1024 Bytes = 1073741824 Bytes (or 2^30 Bytes)

StealthNet uses an unsigned 32 Bit value for storing the filesize, means the maximum file size is 2^32 Bytes = 4294967296 Bytes (means 4 GBytes in the software-world).


By the way: There's a relatively unknown standard for the expression of the difference between both meanings:
-GByte uses the SI-prefix "giga" and means 10^9 Bytes (similar to physical units like gigavolt, gigawatt, ...)
-Gibibyte means 2^30 Bytes (more explanation about this notation on the Mebibyte-article)
=>but as you can see I don't use this useful notation neither... ::)

Greetings,
Nemo.

Offline totoro

  • Regular
  • **
  • Posts: 55
  • Karma: +2/-1
    • View Profile
Re: Really max size?
« Reply #3 on: April 30, 2010, 07:49:03 PM »
Maybe this information must be writing in the wiki? or better when sn include a new file, if the file have more than 4 Go doing something?

Edit: Ooop's thank you for you're answers ;)
« Last Edit: April 30, 2010, 08:13:10 PM by totoro »

Offline Sylar

  • Advanced
  • ***
  • Posts: 192
  • Karma: +5/-2
    • View Profile
    • Stealthnet.fr
Re: Really max size?
« Reply #4 on: January 29, 2011, 11:02:41 PM »
hi there


i post here to not create another topic about that



So we are in 2011 and i wanna know if the "upgrade" of the rshare network to accept files bigger than 4 gb is in the mind or not at all?


just to now, i don't wanna put somme pression or something like that ;)

Just that know as everybody know we have more and more bigger files to share ;)


see ya and thx for your work ;)

Offline jean-roger

  • Advanced
  • ***
  • Posts: 284
  • Karma: +10/-19
    • View Profile
Re: Really max size?
« Reply #5 on: February 01, 2011, 11:51:05 AM »
Split the file in two parts.
Verbessertes Win98se und Winxp sp3 "Coccinelle"
Beide, separat, mit Framework 2.0.50727.42

Offline Sylar

  • Advanced
  • ***
  • Posts: 192
  • Karma: +5/-2
    • View Profile
    • Stealthnet.fr
Re: Really max size?
« Reply #6 on: February 03, 2011, 12:06:10 AM »
Split the file in two parts.


ben oui c'est ce que je fait mais tu admettra que c'est chiant tout de même...


toutefois sa me fait plaisir que tu me réponde sa montre qu'il y a encore quelqu'un de vivant ici ^^