27 lines
1.8 KiB
Markdown
27 lines
1.8 KiB
Markdown
# Architecture
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## Vocabulary
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- **Fediverse:** several servers following each others
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- **Instance:** a server which runs PeerTube in the fediverse
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- **Origin instance:** the instance on which the video was uploaded and which is seeding (WebSeed protocol) the video
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- **Following:** the action of a PeerTube instance which will follow another instance (subscribe to its videos)
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## Base
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### Communications
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* All the communications between the instances are signed with [Linked Data Signatures](https://w3c-dvcg.github.io/ld-signatures/) with the private key of the account that made the action
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* We use the [ActivityPub](https://www.w3.org/TR/activitypub/) protocol (only server-server for now). Object models could be found in [shared/models/activitypub directory](https://github.com/Chocobozzz/PeerTube/tree/develop/shared/models/activitypub).
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* All the requests are retried several times if they fail
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* The maximum of points would be defined
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### Instance
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* An instance has a websocket tracker which is responsible for all the video uploaded in it
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* An instance has an administrator that can follow other instances
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* An instance can be configured to follow back automatically
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* An instance can blacklist other instances (only used in "follow back" mode)
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* An instance cannot choose which other instance follow it, but it can decide to **reject all** followers
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* After having uploaded a video, the instance seeds it (WebSeed protocol)
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* If a user wants to watch a video, he asks its instance the magnet URI and the frontend adds the torrent (with WebTorrent), creates the HTML5 video player and streams the file into it
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* A user watching a video seeds it too (BitTorrent) so another user who is watching the same video can get the data from the origin server and the user 1 (etc)
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