What is torrensts ?
Torrent is a peer-to-peer protocol, which allows users to connect directly to each other to send and receive parts of a file through a central server called a "tracker". The tracker itself does not contain or transmit any information pertaining to the actual content. It only coordinates and manages connections between peers.
Introduction
GET A CLIENT In order to use BitTorrent you need to download a Bittorrent client This will allow you to grab the files described in the. Torrent. There are many clients currently available that can be downloaded for free of the web. Here are some of them:
* Original Bittorrent
* Azureus
* Shadow Experimental
* ABC
* Burst
* BT++
* Shareaza
CONFIGURE Once you have downloaded one of the above eventually check the configuration options in order to tune it to your bandwidth (some clients like Azureus have a configuration wizard):
1. Your upload speed shouldn't be set to more than 80 to 90% of your maximum upload speed. For example, if you have a max upload of 25Kb/s your BitTorrent upload speed shouldn't be more than 20 to 22Kb/s. Using all of it would cause your download speed to be severely lowered, this because a small upload percentage is needed by BitTorrent to communicate with the tracker and the other peers.
2. Don't be too generous and restrain the maximum number of uploads -- how many simultaneous leeches will benefit from your seed -- to a reasonable number. Let's say you have one active torrent and 20Kb/s of total bandwidth. With 4 max uploads, 4 people will receive 5Kb/s from you, which is nice. But if you have 3 active torrents and allow 8 uploads, 24 sad guys (3 torrents with 8 connections on each) will only get less than 1Kb/s which is poor
3. When zero means unlimited you shouldn't leave any values anywhere at zero. Indicate high numbers like 99 or less, according to your tastes. It's just a precaution as some clients experienced memory overload while reaching their unlimited limits. Furthermore, zero seldom means "no connections from peers", ie. no seeding... Don't try that unless you want to be banned from our tracker.
BITTORRENT PARTS
Bit Torrenting consists of three parts:
* The Torrent File
* The Tracker
* The Client
The Torrent File:
The torrent file, (created with Maketorrent), contains all the necessary information on what the file is, what tracker it uses to connect people, (or what tracker to announce to), and is essentially a schematic shell of what you want to download, including all file-checking information to ensure that downloaded files match hash checks.
The Tracker:
The tracker is the backbone to the whole system, your client will announce to the tracker at a designated interval, your current status of the transfer. The tracker will then send you a list of all the people/clients it is tracking, and their status, your client will then decipher this list and contact all the other clients and ask for the pieces you need to complete your download.
The Client:
The client is the program that completes the file for you, it will contact the tracker it a designated interval and receive a list of peers, your client will then communicate to each of those peers on the list and ask for the needed parts.
What do all these words mean? (Seeding, uploading,…………)
Here is a brief list of words associated with BitTorrent and their meanings.
torrent
Usually this refers to the small metadata file you receive from the web server (the one that ends in. torrent.) Metadata here means that the file contains information about the data you want to download, not the data itself. This is what is sent to your computer when you click on a download link on a website. You can also save the torrent file to your local system, and then click on it to open the BitTorrent download. This is useful if you want to be able to re-open the torrent later on without having to find the link again.
In some uses, it can also refer to everything associated with a certain file available with BitTorrent. For example, someone might say "I downloaded that torrent" or "that server has a lot of good torrents", meaning there are lots of good files available via BitTorrent on that server.
peer
A peer is another computer on the internet that you connect to and transfer data. Generally a peer does not have the complete file, otherwise it would be called a seed. Some people also refer to peers as leeches, to distinguish them from those generous folks who have completed their download and continue to leave the client running and act as a seed.
seed
A computer that has a complete copy of a certain torrent. Once your client finishes downloading, it will remain open until you click the Finish button (or otherwise close it.) This is known as being a seed or seeding. You can also start a BT client with a complete file, and once BT has checked the file it will connect and seed the file to others. Generally, it's considered good manners to continue seeding a file after you have finished downloading, to help out others. Also, when a new torrent is posted to a tracker, someone must seed it in order for it to be available to others. Remember, the tracker doesn't know anything of the actual contents of a file, so it's important to follow through and seed a file if you upload the torrent to a tracker.
Reseed
When there are zero seeds for a given torrent (and not enough peers to have a distributed copy), then eventually all the peers will get stuck with an incomplete file, since no one in the swarm has the missing pieces. When this happens, someone with a complete file (a seed) must connect to the swarm so that those missing pieces can be transferred. This is called reseeding. Usually a request for a reseed comes with an implicit promise that the requester will leave his or her client open for some time period after finishing (to add longevity to the torrent) in return for the kind soul reseeding the file
Step-By-Step Download Process
1.you use special Torrent search engines to find. Torrent text files around the Net. A. torrent text file functions as a special pointer to locate a specific file and the swarm of people currently sharing that file. These .torrent files vary from 15kb to 150kb file size, and are published by serious Torrent sharers around the world.
2,you download the desired. Torrent file to your drive (this takes about 5 seconds per. torrent file at cable modem speeds).
3.you open the. Torrent file into your Torrent software. Usually, this is as simple as a a double-click on the. Torrent file icon, and the client software auto-launches. In other cases, this software will even open the Torrent file for you.
4.The Torrent client software will now talk to a tracker server for 2 to 10 minutes, while it scours the Internet for people to swarm with. Specifically, the client and tracker server will search for other users who have the same exact .torrent file as you.
5.As the tracker locates Torrent users to swarm with, each user will be automatically labeled as either a “leech/peer” or as a “seed” (users who have only part of the target file, versus users who have the complete target file). As you might guess, the more seeds you connect to, the faster your download will be. Commonly, 10 peers/leeches and 3 seeders is a good swarm for downloading a single song/movie.
6.The client software then begins the transfer. As the name “sharing” implies, every transfer will happen in both directions, “down” and “up” (leech and share).
*SPEED EXPECTATION: Cable and DSL modem users can expect an average of 25 megabytes per hour, sometimes slower if the swarm is small with less than 2 seeders. On a good day with a big swarm, however, you can download a 5MB song within 3 minutes, and a 900MB movie within 60 minutes.
7.Once the transfer is complete, leave your Torrent client software running for at least two hours. This is called "seeding" or "good karma", where you share your complete files to other users.
Suggestion: do your downloads just before you go to sleep at night. This way, you will seed your complete files, you will increase your upload/download ratio, and you will have complete downloaded files by the time you wake up!
8.Movie and music plug-ins: you will likely need to install media players and updated codec converters to play your downloads:
e.g. Windows Media Player, DivX, RealAudio, Daemon Tools Virtual CD/DVD. Click here for details on getting these plug-in players.
e.g. Xp Codec Pack and other coder-decoder converters.
9.Enjoy your movies and songs!
10.Fair warning: you will want a second hard drive once you start serious Torrent downloading. Songs and movies require large disk space, and an average P2P user commonly has 20 to 40 GB of media files at any one time. A second 250GB hard drive is common for serious P2P users, and the recent low prices on hard drives make it a good investment.
Torrent search engine sites are listed below. This list is compiled from hundreds of reader votes, and voted on each week by a small panel of torrent download users.
Isohunt.com
(September, 2007: Isohunt is barring American users from connecting to American torrent trackers. American users, however, can still use Isohunt to find torrents, and connect to third party trackers. If you want to use this tremendous Canadian site, you better use it while you can. Note: any torrent listed as "ISOhunt release" means that it is a file verified by the administrators...a nice feature to help you get authentic torrents, not fake files.)
Torrentspy.com offers over 420,000 torrents in its database, the largest torrent index that is readily available to the public. September 2007 update: Torrentspy has declared that it will be forbidding American users from doing searches on its website, under pressure from the MPAA.
ThePirate Bay.com, by readership size, is the most popular torrent search site today. Pirate Bay also has an immense database of 600,000+ torrents, the single largest database available on the web.
Demonoid Nov 9, 2007 update: The CRIA has threated Demonoid's ISP. Accordingly, Demonoid has shut down entirely for the time being. This is a sad day for torrent downloaders everywhere. Sep. 26, 2007 update: Canadian users can no longer access Demonoid.com. Details are forthcoming, but their Canadian ISP shut them down by court order. The Canadian Recording Industry Association is behind this court order.
Torrentscan.com (a meta-search engine: Torrenscan is a search engine that searches other torrent search engines)
Introduction
GET A CLIENT In order to use BitTorrent you need to download a Bittorrent client This will allow you to grab the files described in the. Torrent. There are many clients currently available that can be downloaded for free of the web. Here are some of them:
* Original Bittorrent
* Azureus
* Shadow Experimental
* ABC
* Burst
* BT++
* Shareaza
CONFIGURE Once you have downloaded one of the above eventually check the configuration options in order to tune it to your bandwidth (some clients like Azureus have a configuration wizard):
1. Your upload speed shouldn't be set to more than 80 to 90% of your maximum upload speed. For example, if you have a max upload of 25Kb/s your BitTorrent upload speed shouldn't be more than 20 to 22Kb/s. Using all of it would cause your download speed to be severely lowered, this because a small upload percentage is needed by BitTorrent to communicate with the tracker and the other peers.
2. Don't be too generous and restrain the maximum number of uploads -- how many simultaneous leeches will benefit from your seed -- to a reasonable number. Let's say you have one active torrent and 20Kb/s of total bandwidth. With 4 max uploads, 4 people will receive 5Kb/s from you, which is nice. But if you have 3 active torrents and allow 8 uploads, 24 sad guys (3 torrents with 8 connections on each) will only get less than 1Kb/s which is poor
3. When zero means unlimited you shouldn't leave any values anywhere at zero. Indicate high numbers like 99 or less, according to your tastes. It's just a precaution as some clients experienced memory overload while reaching their unlimited limits. Furthermore, zero seldom means "no connections from peers", ie. no seeding... Don't try that unless you want to be banned from our tracker.
BITTORRENT PARTS
Bit Torrenting consists of three parts:
* The Torrent File
* The Tracker
* The Client
The Torrent File:
The torrent file, (created with Maketorrent), contains all the necessary information on what the file is, what tracker it uses to connect people, (or what tracker to announce to), and is essentially a schematic shell of what you want to download, including all file-checking information to ensure that downloaded files match hash checks.
The Tracker:
The tracker is the backbone to the whole system, your client will announce to the tracker at a designated interval, your current status of the transfer. The tracker will then send you a list of all the people/clients it is tracking, and their status, your client will then decipher this list and contact all the other clients and ask for the pieces you need to complete your download.
The Client:
The client is the program that completes the file for you, it will contact the tracker it a designated interval and receive a list of peers, your client will then communicate to each of those peers on the list and ask for the needed parts.
What do all these words mean? (Seeding, uploading,…………)
Here is a brief list of words associated with BitTorrent and their meanings.
torrent
Usually this refers to the small metadata file you receive from the web server (the one that ends in. torrent.) Metadata here means that the file contains information about the data you want to download, not the data itself. This is what is sent to your computer when you click on a download link on a website. You can also save the torrent file to your local system, and then click on it to open the BitTorrent download. This is useful if you want to be able to re-open the torrent later on without having to find the link again.
In some uses, it can also refer to everything associated with a certain file available with BitTorrent. For example, someone might say "I downloaded that torrent" or "that server has a lot of good torrents", meaning there are lots of good files available via BitTorrent on that server.
peer
A peer is another computer on the internet that you connect to and transfer data. Generally a peer does not have the complete file, otherwise it would be called a seed. Some people also refer to peers as leeches, to distinguish them from those generous folks who have completed their download and continue to leave the client running and act as a seed.
seed
A computer that has a complete copy of a certain torrent. Once your client finishes downloading, it will remain open until you click the Finish button (or otherwise close it.) This is known as being a seed or seeding. You can also start a BT client with a complete file, and once BT has checked the file it will connect and seed the file to others. Generally, it's considered good manners to continue seeding a file after you have finished downloading, to help out others. Also, when a new torrent is posted to a tracker, someone must seed it in order for it to be available to others. Remember, the tracker doesn't know anything of the actual contents of a file, so it's important to follow through and seed a file if you upload the torrent to a tracker.
Reseed
When there are zero seeds for a given torrent (and not enough peers to have a distributed copy), then eventually all the peers will get stuck with an incomplete file, since no one in the swarm has the missing pieces. When this happens, someone with a complete file (a seed) must connect to the swarm so that those missing pieces can be transferred. This is called reseeding. Usually a request for a reseed comes with an implicit promise that the requester will leave his or her client open for some time period after finishing (to add longevity to the torrent) in return for the kind soul reseeding the file
Step-By-Step Download Process
1.you use special Torrent search engines to find. Torrent text files around the Net. A. torrent text file functions as a special pointer to locate a specific file and the swarm of people currently sharing that file. These .torrent files vary from 15kb to 150kb file size, and are published by serious Torrent sharers around the world.
2,you download the desired. Torrent file to your drive (this takes about 5 seconds per. torrent file at cable modem speeds).
3.you open the. Torrent file into your Torrent software. Usually, this is as simple as a a double-click on the. Torrent file icon, and the client software auto-launches. In other cases, this software will even open the Torrent file for you.
4.The Torrent client software will now talk to a tracker server for 2 to 10 minutes, while it scours the Internet for people to swarm with. Specifically, the client and tracker server will search for other users who have the same exact .torrent file as you.
5.As the tracker locates Torrent users to swarm with, each user will be automatically labeled as either a “leech/peer” or as a “seed” (users who have only part of the target file, versus users who have the complete target file). As you might guess, the more seeds you connect to, the faster your download will be. Commonly, 10 peers/leeches and 3 seeders is a good swarm for downloading a single song/movie.
6.The client software then begins the transfer. As the name “sharing” implies, every transfer will happen in both directions, “down” and “up” (leech and share).
*SPEED EXPECTATION: Cable and DSL modem users can expect an average of 25 megabytes per hour, sometimes slower if the swarm is small with less than 2 seeders. On a good day with a big swarm, however, you can download a 5MB song within 3 minutes, and a 900MB movie within 60 minutes.
7.Once the transfer is complete, leave your Torrent client software running for at least two hours. This is called "seeding" or "good karma", where you share your complete files to other users.
Suggestion: do your downloads just before you go to sleep at night. This way, you will seed your complete files, you will increase your upload/download ratio, and you will have complete downloaded files by the time you wake up!
8.Movie and music plug-ins: you will likely need to install media players and updated codec converters to play your downloads:
e.g. Windows Media Player, DivX, RealAudio, Daemon Tools Virtual CD/DVD. Click here for details on getting these plug-in players.
e.g. Xp Codec Pack and other coder-decoder converters.
9.Enjoy your movies and songs!
10.Fair warning: you will want a second hard drive once you start serious Torrent downloading. Songs and movies require large disk space, and an average P2P user commonly has 20 to 40 GB of media files at any one time. A second 250GB hard drive is common for serious P2P users, and the recent low prices on hard drives make it a good investment.
Torrent search engine sites are listed below. This list is compiled from hundreds of reader votes, and voted on each week by a small panel of torrent download users.
Isohunt.com
(September, 2007: Isohunt is barring American users from connecting to American torrent trackers. American users, however, can still use Isohunt to find torrents, and connect to third party trackers. If you want to use this tremendous Canadian site, you better use it while you can. Note: any torrent listed as "ISOhunt release" means that it is a file verified by the administrators...a nice feature to help you get authentic torrents, not fake files.)
Torrentspy.com offers over 420,000 torrents in its database, the largest torrent index that is readily available to the public. September 2007 update: Torrentspy has declared that it will be forbidding American users from doing searches on its website, under pressure from the MPAA.
ThePirate Bay.com, by readership size, is the most popular torrent search site today. Pirate Bay also has an immense database of 600,000+ torrents, the single largest database available on the web.
Demonoid Nov 9, 2007 update: The CRIA has threated Demonoid's ISP. Accordingly, Demonoid has shut down entirely for the time being. This is a sad day for torrent downloaders everywhere. Sep. 26, 2007 update: Canadian users can no longer access Demonoid.com. Details are forthcoming, but their Canadian ISP shut them down by court order. The Canadian Recording Industry Association is behind this court order.
Torrentscan.com (a meta-search engine: Torrenscan is a search engine that searches other torrent search engines)
1 comment:
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