fn invite_sender(
user_id: &UserId,
invite_state: &[Raw<AnyStrippedStateEvent>],
) -> Option<OwnedUserId>Expand description
The sender of the stripped membership event inviting user_id.
The last matching entry wins. An invite this server recorded after the federation route began sanitising stripped state holds one entry for this cell, our own copy of the signed membership PDU, whose sender the origin check authenticated. An invite stored before that still carries whatever the inviting server sent ahead of our copy, and the array has no ordering semantics in the spec, so reading the last entry is what keeps those answering with the authenticated sender too.