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# Copyright 2018 New Vector Ltd
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# Copyright 2020 The Matrix.org Foundation C.I.C.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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openapi: 3.1.0
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info:
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title: Matrix Federation Join Room API
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version: 1.0.0
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paths:
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"/make_join/{roomId}/{userId}":
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get:
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summary: Get information required to make a join event for a room
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description: |-
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Asks the receiving server to return information that the sending
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server will need to prepare a join event to get into the room.
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operationId: makeJoin
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security:
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- signedRequest: []
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parameters:
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- in: path
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name: roomId
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description: The room ID that is about to be joined.
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required: true
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example: "!abc123:matrix.org"
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schema:
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type: string
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- in: path
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name: userId
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description: The user ID the join event will be for.
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required: true
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example: "@someone:example.org"
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schema:
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type: string
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- in: query
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name: ver
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description: |-
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The room versions the sending server has support for. Defaults
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to `[1]`.
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example:
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- "1"
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- "2"
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schema:
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type: array
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items:
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type: string
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responses:
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"200":
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description: |-
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A template to be used for the rest of the [Joining Rooms](/server-server-api/#joining-rooms) handshake. Note that
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events have a different format depending on the room version - check the
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[room version specification](/rooms) for precise event formats. **The response body
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here describes the common event fields in more detail and may be missing other
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required fields for a PDU.**
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content:
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application/json:
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schema:
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type: object
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properties:
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room_version:
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type: string
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description: |-
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The version of the room where the server is trying to join. If not provided,
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the room version is assumed to be either "1" or "2".
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example: "2"
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event:
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description: |-
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An unsigned template event. Note that events have a different format
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depending on the room version - check the [room version specification](/rooms)
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for precise event formats.
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type: object
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title: Event Template
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properties:
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sender:
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type: string
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description: The user ID of the joining member.
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example: "@someone:example.org"
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origin:
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type: string
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description: The name of the resident homeserver.
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example: matrix.org
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origin_server_ts:
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type: integer
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format: int64
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description: A timestamp added by the resident homeserver.
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example: 1234567890
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type:
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type: string
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description: The value `m.room.member`.
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example: m.room.member
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state_key:
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type: string
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description: The user ID of the joining member.
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example: "@someone:example.org"
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content:
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type: object
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title: Membership Event Content
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description: The content of the event.
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example:
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membership: join
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properties:
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membership:
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type: string
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description: The value `join`.
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example: join
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join_authorised_via_users_server:
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type: string
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x-addedInMatrixVersion: "1.2"
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description: |-
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Required if the room is [restricted](/client-server-api/#restricted-rooms)
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and is joining through one of the conditions available. If the
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user is responding to an invite, this is not required.
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An arbitrary user ID belonging to the resident server in
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the room being joined that is able to issue invites to other
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users. This is used in later validation of the auth rules for
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the `m.room.member` event.
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required:
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- membership
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required:
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- state_key
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- origin
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- origin_server_ts
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- type
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- content
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- sender
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examples:
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response:
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value: {
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"room_version": "2",
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"event": {
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"room_id": "!somewhere:example.org",
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"type": "m.room.member",
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"state_key": "@someone:example.org",
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"origin": "example.org",
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"origin_server_ts": 1549041175876,
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"sender": "@someone:example.org",
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"content": {
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"membership": "join",
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"join_authorised_via_users_server": "@anyone:resident.example.org"
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}
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}
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}
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"400":
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description: |-
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The request is invalid, the room the server is attempting
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to join has a version that is not listed in the `ver`
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parameters, or the server was unable to validate
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[restricted room conditions](#restricted-rooms).
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The error should be passed through to clients so that they
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may give better feedback to users.
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New in `v1.2`, the following error conditions might happen:
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If the room is [restricted](/client-server-api/#restricted-rooms)
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and none of the conditions can be validated by the server then
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the `errcode` `M_UNABLE_TO_AUTHORISE_JOIN` must be used. This can
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happen if the server does not know about any of the rooms listed
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as conditions, for example.
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`M_UNABLE_TO_GRANT_JOIN` is returned to denote that a different
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server should be attempted for the join. This is typically because
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the resident server can see that the joining user satisfies one or
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more conditions, such as in the case of
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[restricted rooms](/client-server-api/#restricted-rooms), but the
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resident server would be unable to meet the auth rules governing
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`join_authorised_via_users_server` on the resulting `m.room.member`
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event.
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content:
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application/json:
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schema:
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allOf:
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- $ref: ../client-server/definitions/errors/error.yaml
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- type: object
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properties:
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room_version:
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type: string
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description: |-
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The version of the room. Required if the `errcode`
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is `M_INCOMPATIBLE_ROOM_VERSION`.
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examples:
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response:
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value: {
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"errcode": "M_INCOMPATIBLE_ROOM_VERSION",
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"error": "Your homeserver does not support the features required to join this room",
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"room_version": "3"
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}
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"403":
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description: |-
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The room that the joining server is attempting to join does not permit the user
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to join.
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content:
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application/json:
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schema:
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$ref: ../client-server/definitions/errors/error.yaml
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examples:
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response:
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value: {
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"errcode": "M_FORBIDDEN",
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"error": "You are not invited to this room"
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}
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"404":
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description: |-
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The room that the joining server is attempting to join is unknown
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to the receiving server.
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content:
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application/json:
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schema:
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$ref: ../client-server/definitions/errors/error.yaml
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examples:
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response:
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value: {
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"errcode": "M_NOT_FOUND",
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"error": "Unknown room"
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}
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"/send_join/{roomId}/{eventId}":
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put:
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deprecated: true
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summary: Submit a signed join event to a resident server
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description: |-
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**Note:**
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Servers should instead prefer to use the v2 `/send_join` endpoint.
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Submits a signed join event to the resident server for it
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to accept it into the room's graph. Note that events have
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a different format depending on the room version - check
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the [room version specification](/rooms) for precise event formats.
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**The request and response body here describe the common
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event fields in more detail and may be missing other required
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fields for a PDU.**
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operationId: sendJoinV1
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security:
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- signedRequest: []
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parameters:
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- in: path
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name: roomId
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description: The room ID that is about to be joined.
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required: true
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example: "!abc123:matrix.org"
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schema:
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type: string
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- in: path
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name: eventId
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description: The event ID for the join event.
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required: true
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example: $abc123:example.org
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schema:
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type: string
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requestBody:
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content:
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application/json:
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schema:
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type: object
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properties:
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sender:
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type: string
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description: The user ID of the joining member.
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example: "@someone:example.org"
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origin:
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type: string
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description: The name of the joining homeserver.
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example: matrix.org
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origin_server_ts:
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type: integer
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format: int64
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description: A timestamp added by the joining homeserver.
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example: 1234567890
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type:
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type: string
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description: The value `m.room.member`.
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example: m.room.member
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state_key:
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type: string
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description: The user ID of the joining member.
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example: "@someone:example.org"
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content:
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type: object
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title: Membership Event Content
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description: The content of the event.
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example:
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membership: join
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properties:
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membership:
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type: string
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description: The value `join`.
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example: join
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join_authorised_via_users_server:
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type: string
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x-addedInMatrixVersion: "1.2"
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description: |-
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Required if the room is [restricted](/client-server-api/#restricted-rooms)
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and is joining through one of the conditions available. If the
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user is responding to an invite, this is not required.
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An arbitrary user ID belonging to the resident server in
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the room being joined that is able to issue invites to other
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users. This is used in later validation of the auth rules for
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the `m.room.member` event.
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The resident server which owns the provided user ID must have a
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valid signature on the event. If the resident server is receiving
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the `/send_join` request, the signature must be added before sending
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or persisting the event to other servers.
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required:
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- membership
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required:
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- state_key
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- sender
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- origin
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- origin_server_ts
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- type
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- content
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required: true
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responses:
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"200":
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description: The join event has been accepted into the room.
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content:
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application/json:
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schema:
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type: array
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minItems: 2
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maxItems: 2
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items:
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anyOf:
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- type: integer
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description: The value `200`.
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example: 200
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- type: object
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title: Room State
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description: The state for the room.
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properties:
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origin:
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type: string
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description: The resident server's DNS name.
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auth_chain:
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type: array
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description: |-
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The auth chain for the entire current room state prior to the join event.
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Note that events have a different format depending on the room version - check the
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[room version specification](/rooms) for precise event formats.
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items:
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type: object
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title: PDU
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description: |-
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The [PDUs](/server-server-api/#pdus) that make up the auth chain. The event format varies depending
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on the room version - check the [room version specification](/rooms) for precise event formats.
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state:
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type: array
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description: |-
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The resolved current room state prior to the join event.
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|
The event format varies depending on the room version - check the [room version specification](/rooms)
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|
|
for precise event formats.
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|
items:
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|
type: object
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|
|
title: PDU
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|
|
|
description: |-
|
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|
|
The [PDUs](/server-server-api/#pdus) for the fully resolved state of the room. The event format varies depending
|
|
|
|
|
on the room version - check the [room version specification](/rooms) for precise event formats.
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required:
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- auth_chain
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- state
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- origin
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examples:
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response:
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value: [
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200,
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{
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"origin": "matrix.org",
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"auth_chain": [
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{
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|
"$ref": "examples/minimal_pdu.json"
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|
}
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],
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"state": [
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|
{
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|
"$ref": "examples/minimal_pdu.json"
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|
}
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|
],
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"event": {
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|
"$ref": "examples/pdu_v4_join_membership.json"
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|
}
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|
|
}
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|
]
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servers:
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|
- url: "{protocol}://{hostname}{basePath}"
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variables:
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protocol:
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|
|
enum:
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- http
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- https
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default: https
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hostname:
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|
default: localhost:8448
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|
basePath:
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|
|
default: /_matrix/federation/v1
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|
components:
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|
securitySchemes:
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|
|
|
$ref: definitions/security.yaml
|
