ComputersNetworks

File-sharing network: features of use

Why do I need a file-sharing network? This is a collective designation of the programs that are needed to share files. The principle of their work is the ability to find and download the necessary resources in free access, which laid out another user.

general information

A file-sharing network is a peer-to-peer unit. It is used to exchange files between the participants, which are both a server and a client. Networks exist by type of organization: centralized, decentralized, hybrid. What is the difference?

  1. Centralized. They represent a structure that unites clients into the community. Indexing servers store all the information. The advantages of the CA include the ease of programming and the small amount of information that is transferred to the servers. If the network is closed, the reason for this can be a technical failure, unreliability.
  2. Decentralized. They work without index servers. Transfer more information, if compared with centralized. In addition, their reliability is higher. One of the most famous are the networks of Kad, Overnet, Gnutella.
  3. Hybrid. Combine the best qualities of the first two: speed and reliability. They use independent indexing servers that synchronize data with each other. An example of a hybrid network is OpenNap.

What is it for?

A file-sharing network is needed to exchange information via the Internet. With its help you can download music, software, movies, games and much more on your computer. The file-sharing system works according to the following principle:

  1. The user downloads the program.
  2. Opens access to some of your own resources.
  3. The downloaded program has a search string that allows you to search for files on the resources of other users. They should be designed for free use. The resources found can be downloaded free of charge.

Torrents are considered a vivid example of file sharing. Translated from English means "bitstream". The network is a peer-to-peer protocol for exchanging files between participants. Downloading information occurs in parts. For file-sharing, there are special programs and BitTorrent-networks. About them in more detail will be told just below.

User's guide

How to use the I2P network and other file sharing services? One of the most popular programs to date are the BitTorrent protocol. A distribution can consist of one or more files. For each transfer, metadata is created with the extension of the torrent. They contain information about the URL-tracker, complete information about the file (name, volume) and other parameters. In addition, the sum of file segments, the user's key, sources that do not work by protocol is indicated. The peculiarity of the torrent operation is that the load during the distribution is minimal.

In order to download the selected file, you need to join the tracker at the specified address, inform your address and the amount of the file. Next, the user receives the addresses of other clients who download the same resource. He needs to be informed from time to time about the progress of the process in order to obtain updated customer addresses. As a result, there is a constant process of information exchange of segments. In order for the torrent to work faster, you need a large number of clients. The exchange of information also depends on the number and size of the segments.

Advantages and disadvantages

The file exchange network "Freedom" has advantages and disadvantages. The pluses include the ability to find any program, software, another resource and download it for free. Given that there are many users in such systems, it will not be difficult to find even the most exclusive file. When you download, an SSL protocol is created.

The disadvantages of file-sharing systems include fines for the use of torrents in some countries. In addition, to download a large number of software requires a huge amount of RAM. Many users have difficulty obtaining information because of the lack of a "golden" account. In order to acquire full access to the resources of file sharing, you must pay a certain amount. In addition, downloaded files are packed in archives, so it takes time to extract them.

Networks

One of the most popular file sharing programs includes the following programs: eMule, DC ++, LimeWire, FrostWire. Also, do not forget about the various torrents, among them Azureus, BitComet, uTorrent. Particular attention deserves private file-sharing networks. For example, the I2P network belongs to anonymous networks. She independently organizes her work. Its feature is that I2P stores hashed, encrypted network addresses. The transmitted traffic is encrypted, all messages are protected.

The general features of networks, regardless of their popularity, include the lack of queues for downloading files. All information is distributed in parts, and the exchange of segments is made from one user to another. During the process, the client controls the integrity of the fragments. The user has the ability to simultaneously receive and distribute files. Once downloaded, the fragments can be distributed again.

The ED2K network is a centralized type of exchanger. Search on it for available files help specialized servers that are connected with each other. Independent exchange of information between clients occurs via the MFTP protocol.

Reviews

Many users consider file-sharing networks a convenient way to exchange programs and information. Most of them are safe and reliable. Some hide the identity of the client and the server. With their help you can quickly download any software, program, game or video. In addition, there is always a lot of information in the file hosting that is available to the users for free.

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