42ae5c966a
Fixes https://github.com/matrix-org/matrix-doc/issues/2307 These restrictions are due to a Synapse change which never made it to the spec prior to the MSC process. This is therefore documenting an omission. Synapse's numbers are verified here:207b1737ee/synapse/handlers/federation.py (L1183-L1213)... and Synapse's handling of the backfill endpoint is described here:207b1737ee/synapse/handlers/federation.py (L829-L837)This also includes a mention that https://github.com/matrix-org/matrix-doc/pull/1594 should render the `auth_events` limitation unnecessary. No changes are required to the the "checks on receipt of a PDU" section of the server-server spec as it starts with "must be a valid event", to which an event is invalid if it contains too many prev or auth events.
83 lines
2.8 KiB
YAML
83 lines
2.8 KiB
YAML
# Copyright 2019 New Vector Ltd
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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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type: object
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title: Persistent Data Unit
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description: A persistent data unit (event) for room version 3 and beyond.
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example:
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$ref: "../examples/pdu_v3.json"
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allOf:
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- $ref: "unsigned_pdu_base.yaml"
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- type: object
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properties:
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redacts:
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type: string
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description: For redaction events, the ID of the event being redacted.
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example: "$def/456+oldevent"
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auth_events:
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type: array
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items:
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type: string
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description: Event ID.
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description: |-
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Event IDs for the authorization events that would
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allow this event to be in the room.
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Must contain less than or equal to 10 events. Note that if the relevant
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auth event selection rules are used, this restriction should never be
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encountered.
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example: ["$base64EncodedHash", "$AnotherEvent"]
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prev_events:
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type: array
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items:
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type: string
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description: Event ID.
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description: |-
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Event IDs for the most recent events in the room
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that the homeserver was aware of when it made this event.
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Must contain less than or equal to 20 events.
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example: ["$base64EncodedHash", "$AnotherEvent"]
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hashes:
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type: object
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title: Event Hash
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description: |-
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Content hashes of the PDU, following the algorithm specified in `Signing Events`_.
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example: {
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"sha256": "ThisHashCoversAllFieldsInCaseThisIsRedacted"
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}
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properties:
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sha256:
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type: string
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description: The hash.
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example: ThisHashCoversAllFieldsInCaseThisIsRedacted
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required: ['sha256']
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signatures:
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type: object
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description: |-
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Signatures for the PDU, following the algorithm specified in `Signing Events`_.
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example: {
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"example.com": {
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"ed25519:key_version:": "86BytesOfSignatureOfTheRedactedEvent"
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}
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}
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additionalProperties:
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type: object
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title: Server Signatures
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additionalProperties:
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type: string
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required:
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- auth_events
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- prev_events
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- hashes
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- signatures
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