Trackers

A mistake that was common just a few months ago, was throwing out torrents with multiple trackers listed on it. Until recently, a number of torrents listed on the Pirate Bay, had the same tracker listed multiple times under different aliases, something they have since corrected. There are also occasions where up-to a dozen different trackers are listed, all for one torrent.

Some might argue that adding more trackers to a torrent is a good thing, but the fact is, it’s often harming things. Clients that can only handle one tracker, will only announce to the first one listed, and ignore any subsequent trackers listed. Multi-tracker capable clients will announce to the first tracker, as well as any subsequent ones, depending on how they are grouped. The thing is, every peer on the second tracker, will also have announced to the first tracker, and would be available there. However, the peers on the first tracker may not be on any other trackers.

At the end of the day, you’ve gained no new peers (unless the initial tracker was overloaded or down) but used up connection time and bandwidth on your connection, and more importantly, you’ve added an extra load to a tracker. While it may not seem a lot, with even a single thousand-peer torrent, and a 15 minute limit on re-announcing, that’s 4000 extra, needless connections per hour, per torrent.

The solution, use DHT if your client supports it, or if you’re strongly adverse to DHT but feel there is a possibility that the tracker might go offline, you can use a second fall-back tracker. Don’t disable DHT for the torrent though (by setting the private flag) because it can help the torrent die that much faster.

Padding Files

This is a little foible that’s pretty much unique to the BitComet clients. A padding file is an extra file, comprising junk data that’s added to torrents, so that files all start at the beginning of a torrent piece. In theory, this means that if you only want certain files in a torrent, you don’t have to download an extra part, belonging to another file. It is also supposed to make torrent ‘previews’ easier.

However, you don’t save any data downloaded. What you gain from the front will even out with the added data needed for the larger padding file needed at the beginning. Worse, if you’re downloading multiple files, the padding files can add up in size, and examples have been seen where padding files have been 25% of the total torrent size.

For the average user, there is no good reason to use padding files. The is certainly no reason that compensates for the added irritation those files give to other users, or the increased data bulking up the torrent.

Piece Size

Piece size is the bit that can make a torrent seeded on a home connection scale well, or make even the best seeded torrent bog down. At its heart, it’s how big each piece is that is checked, and distributed, but also how much data you discard for a hash-fail. Make the pieces too few and big, and it can be very hard for a peer to get started, too many small pieces will use more of a peers connection for overhead.

It’s a delicate balance, that is not easily found. Small pieces make it less susceptible to poisoning attacks (as practiced by MediaDefender, among others) and will help a torrent deal with sudden increases in peers, by making it easy to get a piece or two to trade. However, keeping track of who has what piece requires bandwidth, and small pieces mean that you will be telling connected peers about pieces you have just got more often.

After a number of years toying around, the optimum number of pieces seems to be between 1200 and 2200. Most torrent creators will only allow piece-sizes in multiples of 16kb, so you should, with few exceptions, find a size that fits in that range. A 700Mb torrent should be 512Kb pieces (giving 1400 total) and similarly, 350Mb would be better with 256kb. A 4.5Gb torrent would have 2,250 pieces, roughly, with a 2Mb piece-size. Or 1,125 with 4Mb. Either way would be fine, but 256kb pieces would mean 17,500+ pieces, and is too many.

File Layout

The file-layout is something that can be key in determining how long the torrent lasts. The layout of a torrent and the data in it, is one of the most important factors in torrent longevity. In general, rars are not encouraged, and can lead to a shorter torrent life. Mainly this is down to the doubling of space this requires, space for the files, and space for the torrented rar. The only observed exception to this seems to be ‘scene rars’ where the rar files are widely available from multiple sources.

For multiple file torrents, directory names are also as important as file names. An accurate, and descriptive directory name frustrates less, than one called “temp” or “001” which can clash with similar named directories on client computers. It should also be noted that although most torrent creators will name the torrent file after the parent directory in the torrent, the torrent file can later be renamed without worry. There is a general misconception that torrents can only contain a certain number of individual files, which is not true.

Also, be wary in adding extra files, such as small text files with a hello, or attribution. Without this exact file the piece can not later be resurrected in a reseed. The more complex the file, the harder a reconstruction, if someone else wants to reseed. That music video of your band might be on someone’s hard drive, but if you had a fancy nfo file full of ASCII-art, which someone has deleted, it not only won’t reseed, but will delete the end of the re-seeders copy of the video when it is hash-checked.

Connection Settings

Finally, and not directly related to making a torrent, make sure your connection settings are optimized. We have published hints on optimizing µtorrent and Azureus/Vuze in the past, as well as more general guides. Make your torrents right, and they will last longer, providing you follow one last tip – SEED. Without seeding, any torrent will die sooner.

Source: TorrentFreak, for the latest info on copyright, file-sharing and anonymous VPN services.

1. How and Why BitTorrent Works

BitTorrent is often referred to as the best filesharing protocol for sharing large files. But why? What makes BitTorrent so unique? Well, lets take a sneak peek under the hood of your BitTorrent client, and list a couple of features that make BitTorrent as fast, stable, and robust as it is.

2. How to Make a Torrent

Torrents are great, they are the best way to share large files with your friends, or even with people you don’t know at all. But surprisingly enough, not many people create torrents when they need to share something. We show you how.

3. uTorrent Beginners Guide

The uTorrent website has a great beginners guide for BitTorrent newbies. Worth a visit if you just started using BitTorrent.

4. Where to find Torrents

By now you probably know how BitTorrent works, now you need a good place to find .torrent files. Here’s a list of 10 great BitTorrent sites. There’s also a list of 20 less known BitTorrent sites.

Fight Throttling ISPs and be Anonymous

5. ISPs Who throttle BitTorrent Traffic

Some Internet providers try to slow you down when you use torrents. The Azureus wiki has list of ISPs who throttle BitTorrent traffic. It also suggests what encryption levels you should use.

6. How To Encrypt BitTorrent Traffic

More and more ISP’s are limiting and throttling BitTorrent traffic on their networks. By throttling BitTorrent traffic the speed of BitTorrent downloads decreases, and high speed downloads are out of the question. We show you some techniques that should help you evade some of these measures.

7. How To Tunnel BitTorrent over SSH

Sometimes it is impossible to use BitTorrent, if you’re at work, school, Comcast! or connected to a public hotspot for example. But there is an easy solution to overcome this problem. If you use a secure connection (SSH), you will be able to bypass almost every firewall.

8. How to make BitTorrent Transfers Anonymous

The Swedish Pirate Party introduced a completely anonymous (VPN) service called Relakks. Relakks makes it possible to browse the web, and use p2p-applications (like BitTorrent) without being monitored by your ISP or anti-piracy gangs like the MPAA and RIAA.

Speed up your BitTorrent Downloads

9. How to Optimize Your BitTorrent Download Speed

BitTorrent can be fun, as long as you get decent speeds. Not satisfied with your current speeds? These suggestions might help you to optimize your download pleasures.

10. How to Speed Up Bitcomet and uTorrent

90% off all people use the default settings on their client, and that’s a problem. Azureus users might want to try this tutorial by Paul Stamatiou.

11. Calculate Your Optimal BitTorrent Settings

Configuring your BitTorrent client is extremely important if you want to get the best out of BitTorrent. However, the settings pane of the average BitTorrent client might be a bit overwhelming, and some people just don’t know where to start.

12. How to Protect Your Torrent From Failing Trackers

Nothing is more frustrating than your download getting stuck. The fact that a torrent has stopped downloading can have several reasons.

BitTorrent and RSS

13. How to Use RSS & BitTorrent to Download TV shows

Are you tired of scanning several BitTorrent sites for the latest episodes of your favorite TV show in HDTV? You should definitely try using RSS feeds then. RSS and BitTorrent are a perfect match.

14. How to Make a Custom TV Torrent Feed

How to create a personalized TV torrent feed, and have all your favorite TV torrents in one feed.

15. Subscribe to TV Shows Using BitTorrent and TVNanny

TVNanny is a BitTorrent site specializing in the indexing of TV show torrents. Using a subscription based interface, it’s possible to automatically download your favorite TV show episodes to your PC, utilizing the RSS feature in your chosen torrent client.

16. How to Use Gmail to Search Torrents

Gmail is more than a useful email service. In just a few steps you can turn it into your personal torrent search engine. And by using labels and filters you can keep your inbox clean.

uTorrent Tips and Tricks

17. How to Run uTorrent on a USB Stick

A portable version of uTorrent may come in handy when you’re with friends, at school, or at work. It will fit perfectly on every usb-stick, iPod, mobile phone, or any other device that is recognized a “removable disk”.

18. How to Run uTorrent in Mac OS X

uTorrent is currently only available for Windows. But that doesn’t going to stop us from running it in OS X.

19. How to Use Firefox to Remotely Control uTorrent

The uTorrent WebUI can be used to access uTorrent from an external computer. This Firefox extension will make it even easier.

20. Use uTorrent to Organize Your BitTorrent Downloads

BitTorrent is great, but all those downloaded torrents have the habit of making a mess of your harddrive. Do you still have all your downloaded stuff in a single folder? Take action, organize your torrents.

Feel free to drop a comment if you have anything to add to this list. Happy torrenting!

Source: TorrentFreak, for the latest info on copyright, file-sharing and anonymous VPN services.

SqrtBoy is known for his work on Torrent Trader Lite, VBTT, IPBTT and other several BitTorrent tracker php/mysql scripts. It is great to see that someone is proposing a standard for BitTorrent rss feeds.

Every webmaster probably has his own thoughts about how the perfect rss feed would look, but this document is definitely a step forward.

SqrtBoy told TorrentFreak:

I have found that each rss feed was different from one site to another, and from a BitTorrent script to another. The multiplication and organization of different feeds formats was leading to confusion and was making it difficult to read in rss clients, and also some other feed indexing applications. The purpose of this document is to give some recommendations to webmasters on how a rss 2.0 BitTorrent related feed should be designed, so maybe we can see a standard appearing.

I think it is extremely important to have a proper standard for BitTorrent rss feeds, especially since the number of people that get their latest torrents though feedreaders, media players and BitTorrent clients is growing.

Using the same feed style will only benefit the usability of BitTorrent & rss, and their implementation in feed based TV players like Democracy, Fireant and IM.

BitTorrent RSS 2.0 Feed Specifications White Paper

Source: TorrentFreak, for the latest info on copyright, file-sharing and anonymous VPN services.

Source: TorrentFreak, for the latest info on copyright, file-sharing and anonymous VPN services.