82 lines
4 KiB
Markdown
82 lines
4 KiB
Markdown
[](https://travis-ci.org/lbryio/lbry)
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[](https://coveralls.io/github/lbryio/lbry)
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# LBRY
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LBRY is a fully decentralized, open-source protocol facilitating the discovery, access, and (sometimes) purchase of data.
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## Installing LBRY
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We provide binaries for Windows, macOS, and Debian-based Linux.
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| Windows | macOS | Linux |
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| --- | --- | --- |
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| [Download MSI](https://lbry.io/get/lbry.msi) | [Download DMG](https://lbry.io/get/lbry.dmg) | [Download DEB](https://lbry.io/get/lbry.deb) |
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Our [releases page](https://github.com/lbryio/lbry/releases/latest) also contains the latest release, pre-releases, and past builds.
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For instructions on building from source, see [INSTALL.md](INSTALL.md).
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## What is LBRY?
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LBRY is a fully decentralized network for distributing data. It consists of peers uploading
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and downloading data from other peers, possibly in exchange for payments, and a distributed hash
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table, used by peers to discover other peers.
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On LBRY, data is broken into chunks, and each chunk is specified by its sha384 hash sum. This
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guarantees that peers can verify the correctness of each chunk without having to know anything
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about its contents, and can confidently re-transmit the chunk to other peers. Peers wishing to
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transmit chunks to other peers announce to the distributed hash table that they are associated
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with the sha384 hash sum in question. When a peer wants to download that chunk from the network,
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it asks the distributed hash table which peers are associated with that sha384 hash sum. The
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distributed hash table can also be used more generally. It simply stores IP addresses and
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ports which are associated with 384-bit numbers, and can be used by any type of application to
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help peers find each other. For example, an application for which clients don't know all of the
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necessary chunks may use some identifier, chosen by the application, to find clients which do
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know all of the necessary chunks.
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## For Developers
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The bundled LBRY application uses the lbrynet JSONRPC api found in `lbrynet.lbrynet_daemon.LBRYDaemon`. This api allows for applications and web services like the lbry browser UI to interact with lbrynet. If you've installed lbrynet, you can run `lbrynet-daemon` without running the app. While the app or `lbrynet-daemon` is running, you can use the following to show the help for all the available commands:
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```
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from jsonrpc.proxy import JSONRPCProxy
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try:
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from lbrynet.conf import API_CONNECTION_STRING
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except:
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print "You don't have lbrynet installed!"
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API_CONNECTION_STRING = "http://localhost:5279/lbryapi"
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api = JSONRPCProxy.from_url(API_CONNECTION_STRING)
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status = api.status()
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if not status['is_running']:
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print status
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else:
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for cmd in api.commands():
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print "%s:\n%s" % (cmd, api.help({'command': cmd}))
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```
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If you've installed lbrynet, it comes with a file sharing application, called `lbrynet-daemon`, which breaks
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files into chunks, encrypts them with a symmetric key, computes their sha384 hash sum, generates
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a special file called a 'stream descriptor' containing the hash sums and some other file metadata,
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and makes the chunks available for download by other peers. A peer wishing to download the file
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must first obtain the 'stream descriptor' and then may open it with his `lbrynet-daemon` client,
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download all of the chunks by locating peers with the chunks via the DHT, and then combine the
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chunks into the original file, according to the metadata included in the 'stream descriptor'.
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For instructions on installing from source, see [INSTALL.md](INSTALL.md).
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Source code: https://github.com/lbryio/lbry
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To contribute, [join us on Slack](https://lbry-slackin.herokuapp.com/) or contact jeremy@lbry.io. Pull requests are also welcome.
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## Support
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Please open an issue and describe your situation in detail. We will respond as soon as we can.
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For private issues, contact jeremy@lbry.io.
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## License
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See [LICENSE](LICENSE)
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