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| -rw-r--r-- | docs/specification.rst | 30 |
1 files changed, 26 insertions, 4 deletions
diff --git a/docs/specification.rst b/docs/specification.rst index e6b85dba33..f2e973de33 100644 --- a/docs/specification.rst +++ b/docs/specification.rst @@ -1358,10 +1358,32 @@ prefixed with ``m.`` Example: ``{ "aliases": ["#foo:example.com"] }`` Description: - A server `may` inform the room that it has added or removed an alias for - the room. This is purely for informational purposes and may become stale. - Clients `should` check that the room alias is still valid before using it. - The ``state_key`` of the event is the homeserver which owns the room alias. + This event is sent by a homeserver directly to inform of changes to the + list of aliases it knows about for that room. As a special-case, the + ``state_key`` of the event is the homeserver which owns the room alias. + For example, an event might look like:: + + { + "type": "m.room.aliases", + "event_id": "012345678ab", + "room_id": "!xAbCdEfG:example.com", + "state_key": "example.com", + "content": { + "aliases": ["#foo:example.com"] + } + } + + The event contains the full list of aliases now stored by the home server + that emitted it; additions or deletions are not explicitly mentioned as + being such. The entire set of known aliases for the room is then the union + of the individual lists declared by all such keys, one from each home + server holding at least one alias. + + Clients `should` check the validity of any room alias given in this list + before presenting it to the user as trusted fact. The lists given by this + event should be considered simply as advice on which aliases might exist, + for which the client can perform the lookup to confirm whether it receives + the correct room ID. ``m.room.message`` Summary: |