====== Used Protocols ======

===== Friendicas DFRN Protocol =====

  * [[https://git.friendi.ca/friendica/friendica/src/branch/develop/spec/dfrn2.pdf|Document with the DFRN specification]]
  * [[https://git.friendi.ca/friendica/friendica/src/branch/develop/spec/dfrn2_contact_request.png|Schema of the contact request process]]
  * [[https://git.friendi.ca/friendica/friendica/src/branch/develop/spec/dfrn2_contact_confirmation.png|Schema of the contact request confirmation]]
  * [[:docs:Message-Flow|Description of the message flow]]

===== ActivityStreams =====

Friendica is using ActivityStreams in version 1.0 for its activities and object types. Additional types are used for non standard activities.

  * [[http://activitystrea.ms/head/activity-schema.html|Link to the specification]]
  * [[https://github.com/friendica/friendica/wiki/ActivityStreams|List of used ActivityStreams verbs and object types.]]

===== Salmon =====

Salmon is used as a message exchange protocol for replies and mentions.

  * [[http://www.salmon-protocol.org/salmon-protocol-summary|Link to the protocol summary]]

===== Portable Contacts =====

Portable Contacts is used for friends lists.

  * [[https://web.archive.org/web/20160426223008/http://portablecontacts.net/draft-spec.html|Link to the specification]] (Link to archive.org)

===== pubsubhubbub =====

pubsubhubbub is used for OStatus.

  * [[https://pubsubhubbub.github.io/PubSubHubbub/pubsubhubbub-core-0.4.html|Link to the specification]]