Skip to content
Tags give the ability to mark specific points in history as being important
  • v1.62.0rc3
    Synapse 1.62.0rc3 (2022-07-04)
    ==============================
    
    Bugfixes
    --------
    
    - Update the version of the [ldap3 plugin](https://github.com/matrix-org/matrix-synapse-ldap3/) included in the `matrixdotorg/synapse` DockerHub images and the Debian packages hosted on `packages.matrix.org` to 0.2.1. This fixes [a bug](https://github.com/matrix-org/matrix-synapse-ldap3/pull/163) with usernames containing uppercase characters. ([\#13156](https://github.com/matrix-org/synapse/issues/13156))
    - Fix a bug introduced in Synapse 1.62.0rc1 affecting unread counts for users on small servers. ([\#13168](https://github.com/matrix-org/synapse/issues/13168))
    
  • v1.62.0rc2
    d40b2708 · 1.62.0rc2 ·
    Synapse 1.62.0rc2 (2022-07-01)
    ==============================
    
    Bugfixes
    --------
    
    - Fix unread counts for users on large servers. Introduced in v1.62.0rc1. ([\#13140](https://github.com/matrix-org/synapse/issues/13140))
    - Fix DB performance when deleting old push notifications. Introduced in v1.62.0rc1. ([\#13141](https://github.com/matrix-org/synapse/issues/13141))
    
  • v1.62.0rc1
    Synapse 1.62.0rc1 (2022-06-28)
    ==============================
    
    Features
    --------
    
    - Port the spam-checker API callbacks to a new, richer API. This is part of an ongoing change to let spam-checker modules inform users of the reason their event or operation is rejected. ([\#12857](https://github.com/matrix-org/synapse/issues/12857), [\#13047](https://github.com/matrix-org/synapse/issues/13047))
    - Allow server admins to customise the response of the `/.well-known/matrix/client` endpoint. ([\#13035](https://github.com/matrix-org/synapse/issues/13035))
    - Add metrics measuring the CPU and DB time spent in state resolution. ([\#13036](https://github.com/matrix-org/synapse/issues/13036))
    - Speed up fetching of device list changes in `/sync` and `/keys/changes`. ([\#13045](https://github.com/matrix-org/synapse/issues/13045), [\#13098](https://github.com/matrix-org/synapse/issues/13098))
    - Improve URL previews for sites which only provide Twitter Card metadata, e.g. LWN.net. ([\#13056](https://github.com/matrix-org/synapse/issues/13056))
    
    Bugfixes
    --------
    
    - Update [MSC3786](https://github.com/matrix-org/matrix-spec-proposals/pull/3786) implementation to check `state_key`. ([\#12939](https://github.com/matrix-org/synapse/issues/12939))
    - Fix a bug introduced in Synapse 1.58 where Synapse would not report full version information when installed from a git checkout. This is a best-effort affair and not guaranteed to be stable. ([\#12973](https://github.com/matrix-org/synapse/issues/12973))
    - Fix a bug introduced in Synapse 1.60 where Synapse would fail to start if the `sqlite3` module was not available. ([\#12979](https://github.com/matrix-org/synapse/issues/12979))
    - Fix a bug where non-standard information was required when requesting the `/hierarchy` API over federation. Introduced
      in Synapse v1.41.0. ([\#12991](https://github.com/matrix-org/synapse/issues/12991))
    - Fix a long-standing bug which meant that rate limiting was not restrictive enough in some cases. ([\#13018](https://github.com/matrix-org/synapse/issues/13018))
    - Fix a bug introduced in Synapse 1.58 where profile requests for a malformed user ID would ccause an internal error. Synapse now returns 400 Bad Request in this situation. ([\#13041](https://github.com/matrix-org/synapse/issues/13041))
    - Fix some inconsistencies in the event authentication code. ([\#13087](https://github.com/matrix-org/synapse/issues/13087), [\#13088](https://github.com/matrix-org/synapse/issues/13088))
    - Fix a long-standing bug where room directory requests would cause an internal server error if given a malformed room alias. ([\#13106](https://github.com/matrix-org/synapse/issues/13106))
    
    Improved Documentation
    ----------------------
    
    - Add documentation for how to configure Synapse with Workers using Docker Compose. Includes example worker config and docker-compose.yaml. Contributed by @Thumbscrew. ([\#12737](https://github.com/matrix-org/synapse/issues/12737))
    - Ensure the [Poetry cheat sheet](https://matrix-org.github.io/synapse/develop/development/dependencies.html) is available in the online documentation. ([\#13022](https://github.com/matrix-org/synapse/issues/13022))
    - Mention removed community/group worker endpoints in upgrade.md. Contributed by @olmari. ([\#13023](https://github.com/matrix-org/synapse/issues/13023))
    - Add instructions for running Complement with `gotestfmt`-formatted output locally. ([\#13073](https://github.com/matrix-org/synapse/issues/13073))
    - Update OpenTracing docs to reference the configuration manual rather than the configuration file. ([\#13076](https://github.com/matrix-org/synapse/issues/13076))
    - Update information on downstream Debian packages. ([\#13095](https://github.com/matrix-org/synapse/issues/13095))
    - Remove documentation for the Delete Group Admin API which no longer exists. ([\#13112](https://github.com/matrix-org/synapse/issues/13112))
    
    Deprecations and Removals
    -------------------------
    
    - Remove the unspecced `DELETE /directory/list/room/{roomId}` endpoint, which hid rooms from the [public room directory](https://spec.matrix.org/v1.3/client-server-api/#listing-rooms). Instead, `PUT` to the same URL with a visibility of `"private"`. ([\#13123](https://github.com/matrix-org/synapse/issues/13123))
    
    Internal Changes
    ----------------
    
    - Add tests for cancellation of `GET /rooms/$room_id/members` and `GET /rooms/$room_id/state` requests. ([\#12674](https://github.com/matrix-org/synapse/issues/12674))
    - Report login failures due to unknown third party identifiers in the same way as failures due to invalid passwords. This prevents an attacker from using the error response to determine if the identifier exists. Contributed by Daniel Aloni. ([\#12738](https://github.com/matrix-org/synapse/issues/12738))
    - Merge the Complement testing Docker images into a single, multi-purpose image. ([\#12881](https://github.com/matrix-org/synapse/issues/12881), [\#13075](https://github.com/matrix-org/synapse/issues/13075))
    - Simplify the database schema for `event_edges`. ([\#12893](https://github.com/matrix-org/synapse/issues/12893))
    - Clean up the test code for client disconnection. ([\#12929](https://github.com/matrix-org/synapse/issues/12929))
    - Remove code generating comments in configuration. ([\#12941](https://github.com/matrix-org/synapse/issues/12941))
    - Add `Cross-Origin-Resource-Policy: cross-origin` header to content repository's thumbnail and download endpoints. ([\#12944](https://github.com/matrix-org/synapse/issues/12944))
    - Replace noop background updates with `DELETE` delta. ([\#12954](https://github.com/matrix-org/synapse/issues/12954), [\#13050](https://github.com/matrix-org/synapse/issues/13050))
    - Use lower isolation level when inserting read receipts to avoid serialization errors. Contributed by Nick @ Beeper. ([\#12957](https://github.com/matrix-org/synapse/issues/12957))
    - Reduce the amount of state we pull from the DB. ([\#12963](https://github.com/matrix-org/synapse/issues/12963))
    - Enable testing against PostgreSQL databases in Complement CI. ([\#12965](https://github.com/matrix-org/synapse/issues/12965), [\#13034](https://github.com/matrix-org/synapse/issues/13034))
    - Fix an inaccurate comment. ([\#12969](https://github.com/matrix-org/synapse/issues/12969))
    - Remove the `delete_device` method and always call `delete_devices`. ([\#12970](https://github.com/matrix-org/synapse/issues/12970))
    - Use a GitHub form for issues rather than a hard-to-read, easy-to-ignore template. ([\#12982](https://github.com/matrix-org/synapse/issues/12982))
    - Move [MSC3715](https://github.com/matrix-org/matrix-spec-proposals/pull/3715) behind an experimental config flag. ([\#12984](https://github.com/matrix-org/synapse/issues/12984))
    - Add type hints to tests. ([\#12985](https://github.com/matrix-org/synapse/issues/12985), [\#13099](https://github.com/matrix-org/synapse/issues/13099))
    - Refactor macaroon tokens generation and move the unsubscribe link in notification emails to `/_synapse/client/unsubscribe`. ([\#12986](https://github.com/matrix-org/synapse/issues/12986))
    - Fix documentation for running complement tests. ([\#12990](https://github.com/matrix-org/synapse/issues/12990))
    - Faster joins: add issue links to the TODO comments in the code. ([\#13004](https://github.com/matrix-org/synapse/issues/13004))
    - Reduce DB usage of `/sync` when a large number of unread messages have recently been sent in a room. ([\#13005](https://github.com/matrix-org/synapse/issues/13005), [\#13096](https://github.com/matrix-org/synapse/issues/13096), [\#13118](https://github.com/matrix-org/synapse/issues/13118))
    - Replaced usage of PyJWT with methods from Authlib in `org.matrix.login.jwt`. Contributed by Hannes Lerchl. ([\#13011](https://github.com/matrix-org/synapse/issues/13011))
    - Modernize the `contrib/graph/` scripts. ([\#13013](https://github.com/matrix-org/synapse/issues/13013))
    - Remove redundant `room_version` parameters from event auth functions. ([\#13017](https://github.com/matrix-org/synapse/issues/13017))
    - Decouple `synapse.api.auth_blocking.AuthBlocking` from `synapse.api.auth.Auth`. ([\#13021](https://github.com/matrix-org/synapse/issues/13021))
    - Add type annotations to `synapse.storage.databases.main.devices`. ([\#13025](https://github.com/matrix-org/synapse/issues/13025))
    - Set default `sync_response_cache_duration` to two minutes. ([\#13042](https://github.com/matrix-org/synapse/issues/13042))
    - Rename CI test runs. ([\#13046](https://github.com/matrix-org/synapse/issues/13046))
    - Increase timeout of complement CI test runs. ([\#13048](https://github.com/matrix-org/synapse/issues/13048))
    - Refactor entry points so that they all have a `main` function. ([\#13052](https://github.com/matrix-org/synapse/issues/13052))
    - Refactor the Dockerfile-workers configuration script to use Jinja2 templates in Synapse workers' Supervisord blocks. ([\#13054](https://github.com/matrix-org/synapse/issues/13054))
    - Add headers to individual options in config documentation to allow for linking. ([\#13055](https://github.com/matrix-org/synapse/issues/13055))
    - Make Complement CI logs easier to read. ([\#13057](https://github.com/matrix-org/synapse/issues/13057), [\#13058](https://github.com/matrix-org/synapse/issues/13058), [\#13069](https://github.com/matrix-org/synapse/issues/13069))
    - Don't instantiate modules with keyword arguments. ([\#13060](https://github.com/matrix-org/synapse/issues/13060))
    - Fix type checking errors against Twisted trunk. ([\#13061](https://github.com/matrix-org/synapse/issues/13061))
    - Allow MSC3030 `timestamp_to_event` calls from anyone on world-readable rooms. ([\#13062](https://github.com/matrix-org/synapse/issues/13062))
    - Add a CI job to check that schema deltas are in the correct folder. ([\#13063](https://github.com/matrix-org/synapse/issues/13063))
    - Avoid rechecking event auth rules which are independent of room state. ([\#13065](https://github.com/matrix-org/synapse/issues/13065))
    - Reduce the duplication of code that invokes the rate limiter. ([\#13070](https://github.com/matrix-org/synapse/issues/13070))
    - Add a Subject Alternative Name to the certificate generated for Complement tests. ([\#13071](https://github.com/matrix-org/synapse/issues/13071))
    - Add more tests for room upgrades. ([\#13074](https://github.com/matrix-org/synapse/issues/13074))
    - Pin dependencies maintained by matrix.org to [semantic version](https://semver.org/) bounds. ([\#13082](https://github.com/matrix-org/synapse/issues/13082))
    - Correctly report prometheus DB stats for `get_earliest_token_for_stats`. ([\#13085](https://github.com/matrix-org/synapse/issues/13085))
    - Fix a long-standing bug where a finished logging context would be re-started when Synapse failed to persist an event from federation. ([\#13089](https://github.com/matrix-org/synapse/issues/13089))
    - Simplify the alias deletion logic as an application service. ([\#13093](https://github.com/matrix-org/synapse/issues/13093))
    - Add type annotations to `tests.test_server`. ([\#13124](https://github.com/matrix-org/synapse/issues/13124))
    
    
  • v1.61.1
    09d89ddc · Linkify GHSA commit ·
    Synapse 1.61.1 (2022-06-28)
    ===========================
    
    This patch release fixes a security issue regarding URL previews, affecting all prior versions of Synapse. Server administrators are encouraged to update Synapse as soon as possible. We are not aware of these vulnerabilities being exploited in the wild.
    
    Server administrators who are unable to update Synapse may use the workarounds described in the linked GitHub Security Advisory below.
    
    The following issue is fixed in 1.61.1.
    
    * [GHSA-22p3-qrh9-cx32](https://github.com/matrix-org/synapse/security/advisories/GHSA-22p3-qrh9-cx32) / [CVE-2022-31052](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-31052)
    
      Synapse instances with the [`url_preview_enabled`](https://matrix-org.github.io/synapse/v1.61/usage/configuration/config_documentation.html#media-store) homeserver config option set to `true` are affected. URL previews of some web pages can lead to unbounded recursion, causing the request to either fail, or in some cases crash the running Synapse process.
    
      Requesting URL previews requires authentication. Nevertheless, it is possible to exploit this maliciously, either by malicious users on the homeserver, or by remote users sending URLs that a local user's client may automatically request a URL preview for.
    
      Homeservers with the `url_preview_enabled` configuration option set to `false` (the default) are unaffected. Instances with the `enable_media_repo` configuration option set to `false` are also unaffected, as this also disables URL preview functionality.
    
      Fixed by [fa1308061802ac7b7d20e954ba7372c5ac292333](https://github.com/matrix-org/synapse/commit/fa1308061802ac7b7d20e954ba7372c5ac292333).
    
  • v1.61.0
    b8bf6123 · Fixup upgrades ·
    Synapse 1.61.0 (2022-06-14)
    ===========================
    
    This release removes support for the non-standard feature known both as 'groups' and as 'communities', which have been superseded by *Spaces*.
    
    See [the upgrade notes](https://github.com/matrix-org/synapse/blob/develop/docs/upgrade.md#upgrading-to-v1610)
    for more details.
    
    Improved Documentation
    ----------------------
    
    - Mention removed community/group worker endpoints in [upgrade.md](https://github.com/matrix-org/synapse/blob/develop/docs/upgrade.md#upgrading-to-v1610s). Contributed by @olmari. ([\#13023](https://github.com/matrix-org/synapse/issues/13023))
    
    Synapse 1.61.0rc1 (2022-06-07)
    ==============================
    
    Features
    --------
    
    - Add new `media_retention` options to the homeserver config for routinely cleaning up non-recently accessed media. ([\#12732](https://github.com/matrix-org/synapse/issues/12732), [\#12972](https://github.com/matrix-org/synapse/issues/12972), [\#12977](https://github.com/matrix-org/synapse/issues/12977))
    - Experimental support for [MSC3772](https://github.com/matrix-org/matrix-spec-proposals/pull/3772): Push rule for mutually related events. ([\#12740](https://github.com/matrix-org/synapse/issues/12740), [\#12859](https://github.com/matrix-org/synapse/issues/12859))
    - Update to the `check_event_for_spam` module callback: Deprecate the current callback signature, replace it with a new signature that is both less ambiguous (replacing booleans with explicit allow/block) and more powerful (ability to return explicit error codes). ([\#12808](https://github.com/matrix-org/synapse/issues/12808))
    - Add storage and module API methods to get monthly active users (and their corresponding appservices) within an optionally specified time range. ([\#12838](https://github.com/matrix-org/synapse/issues/12838), [\#12917](https://github.com/matrix-org/synapse/issues/12917))
    - Support the new error code `ORG.MATRIX.MSC3823.USER_ACCOUNT_SUSPENDED` from [MSC3823](https://github.com/matrix-org/matrix-spec-proposals/pull/3823). ([\#12845](https://github.com/matrix-org/synapse/issues/12845), [\#12923](https://github.com/matrix-org/synapse/issues/12923))
    - Add a configurable background job to delete stale devices. ([\#12855](https://github.com/matrix-org/synapse/issues/12855))
    - Improve URL previews for pages with empty elements. ([\#12951](https://github.com/matrix-org/synapse/issues/12951))
    - Allow updating a user's password using the admin API without logging out their devices. Contributed by @jcgruenhage. ([\#12952](https://github.com/matrix-org/synapse/issues/12952))
    
    Bugfixes
    --------
    
    - Always send an `access_token` in `/thirdparty/` requests to appservices, as required by the [Application Service API specification](https://spec.matrix.org/v1.1/application-service-api/#third-party-networks). ([\#12746](https://github.com/matrix-org/synapse/issues/12746))
    - Implement [MSC3816](https://github.com/matrix-org/matrix-spec-proposals/pull/3816): sending the root event in a thread should count as having 'participated' in it. ([\#12766](https://github.com/matrix-org/synapse/issues/12766))
    - Delete events from the `federation_inbound_events_staging` table when a room is purged through the admin API. ([\#12784](https://github.com/matrix-org/synapse/issues/12784))
    - Fix a bug where we did not correctly handle invalid device list updates over federation. Contributed by Carl Bordum Hansen. ([\#12829](https://github.com/matrix-org/synapse/issues/12829))
    - Fix a bug which allowed multiple async operations to access database locks concurrently. Contributed by @sumnerevans @ Beeper. ([\#12832](https://github.com/matrix-org/synapse/issues/12832))
    - Fix an issue introduced in Synapse 0.34 where the `/notifications` endpoint would only return notifications if a user registered at least one pusher. Contributed by Famedly. ([\#12840](https://github.com/matrix-org/synapse/issues/12840))
    - Fix a bug where servers using a Postgres database would fail to backfill from an insertion event when MSC2716 is enabled (`experimental_features.msc2716_enabled`). ([\#12843](https://github.com/matrix-org/synapse/issues/12843))
    - Fix [MSC3787](https://github.com/matrix-org/matrix-spec-proposals/pull/3787) rooms being omitted from room directory, room summary and space hierarchy responses. ([\#12858](https://github.com/matrix-org/synapse/issues/12858))
    - Fix a bug introduced in Synapse 1.54.0 which could sometimes cause exceptions when handling federated traffic. ([\#12877](https://github.com/matrix-org/synapse/issues/12877))
    - Fix a bug introduced in Synapse 1.59.0 which caused room deletion to fail with a foreign key violation error. ([\#12889](https://github.com/matrix-org/synapse/issues/12889))
    - Fix a long-standing bug which caused the `/messages` endpoint to return an incorrect `end` attribute when there were no more events. Contributed by @Vetchu. ([\#12903](https://github.com/matrix-org/synapse/issues/12903))
    - Fix a bug introduced in Synapse 1.58.0 where `/sync` would fail if the most recent event in a room was a redaction of an event that has since been purged. ([\#12905](https://github.com/matrix-org/synapse/issues/12905))
    - Fix a potential memory leak when generating thumbnails. ([\#12932](https://github.com/matrix-org/synapse/issues/12932))
    - Fix a long-standing bug where a URL preview would break if the image failed to download. ([\#12950](https://github.com/matrix-org/synapse/issues/12950))
    
    Improved Documentation
    ----------------------
    
    - Fix typographical errors in documentation. ([\#12863](https://github.com/matrix-org/synapse/issues/12863))
    - Fix documentation incorrectly stating the `sendToDevice` endpoint can be directed at generic workers. Contributed by Nick @ Beeper. ([\#12867](https://github.com/matrix-org/synapse/issues/12867))
    
    Deprecations and Removals
    -------------------------
    
    - Remove support for the non-standard groups/communities feature from Synapse. ([\#12553](https://github.com/matrix-org/synapse/issues/12553), [\#12558](https://github.com/matrix-org/synapse/issues/12558), [\#12563](https://github.com/matrix-org/synapse/issues/12563), [\#12895](https://github.com/matrix-org/synapse/issues/12895), [\#12897](https://github.com/matrix-org/synapse/issues/12897), [\#12899](https://github.com/matrix-org/synapse/issues/12899), [\#12900](https://github.com/matrix-org/synapse/issues/12900), [\#12936](https://github.com/matrix-org/synapse/issues/12936), [\#12966](https://github.com/matrix-org/synapse/issues/12966))
    - Remove contributed `kick_users.py` script. This is broken under Python 3, and is not added to the environment when `pip install`ing Synapse. ([\#12908](https://github.com/matrix-org/synapse/issues/12908))
    - Remove `contrib/jitsimeetbridge`. This was an unused experiment that hasn't been meaningfully changed since 2014. ([\#12909](https://github.com/matrix-org/synapse/issues/12909))
    - Remove unused `contrib/experiements/cursesio.py` script, which fails to run under Python 3. ([\#12910](https://github.com/matrix-org/synapse/issues/12910))
    - Remove unused `contrib/experiements/test_messaging.py` script. This fails to run on Python 3. ([\#12911](https://github.com/matrix-org/synapse/issues/12911))
    
    Internal Changes
    ----------------
    
    - Test Synapse against Complement with workers. ([\#12810](https://github.com/matrix-org/synapse/issues/12810), [\#12933](https://github.com/matrix-org/synapse/issues/12933))
    - Reduce the amount of state we pull from the DB. ([\#12811](https://github.com/matrix-org/synapse/issues/12811), [\#12964](https://github.com/matrix-org/synapse/issues/12964))
    - Try other homeservers when re-syncing state for rooms with partial state. ([\#12812](https://github.com/matrix-org/synapse/issues/12812))
    - Resume state re-syncing for rooms with partial state after a Synapse restart. ([\#12813](https://github.com/matrix-org/synapse/issues/12813))
    - Remove Mutual Rooms' ([MSC2666](https://github.com/matrix-org/matrix-spec-proposals/pull/2666)) endpoint dependency on the User Directory. ([\#12836](https://github.com/matrix-org/synapse/issues/12836))
    - Experimental: expand `check_event_for_spam` with ability to return additional fields. This enables spam-checker implementations to experiment with mechanisms to give users more information about why they are blocked and whether any action is needed from them to be unblocked. ([\#12846](https://github.com/matrix-org/synapse/issues/12846))
    - Remove `dont_notify` from the `.m.rule.room.server_acl` rule. ([\#12849](https://github.com/matrix-org/synapse/issues/12849))
    - Remove the unstable `/hierarchy` endpoint from [MSC2946](https://github.com/matrix-org/matrix-doc/pull/2946). ([\#12851](https://github.com/matrix-org/synapse/issues/12851))
    - Pull out less state when handling gaps in room DAG. ([\#12852](https://github.com/matrix-org/synapse/issues/12852), [\#12904](https://github.com/matrix-org/synapse/issues/12904))
    - Clean-up the push rules datastore. ([\#12856](https://github.com/matrix-org/synapse/issues/12856))
    - Correct a type annotation in the URL preview source code. ([\#12860](https://github.com/matrix-org/synapse/issues/12860))
    - Update `pyjwt` dependency to [2.4.0](https://github.com/jpadilla/pyjwt/releases/tag/2.4.0). ([\#12865](https://github.com/matrix-org/synapse/issues/12865))
    - Enable the `/account/whoami` endpoint on synapse worker processes. Contributed by Nick @ Beeper. ([\#12866](https://github.com/matrix-org/synapse/issues/12866))
    - Enable the `batch_send` endpoint on synapse worker processes. Contributed by Nick @ Beeper. ([\#12868](https://github.com/matrix-org/synapse/issues/12868))
    - Don't generate empty AS transactions when the AS is flagged as down. Contributed by Nick @ Beeper. ([\#12869](https://github.com/matrix-org/synapse/issues/12869))
    - Fix up the variable `state_store` naming. ([\#12871](https://github.com/matrix-org/synapse/issues/12871))
    - Faster room joins: when querying the current state of the room, wait for state to be populated. ([\#12872](https://github.com/matrix-org/synapse/issues/12872))
    - Avoid running queries which will never result in deletions. ([\#12879](https://github.com/matrix-org/synapse/issues/12879))
    - Use constants for EDU types. ([\#12884](https://github.com/matrix-org/synapse/issues/12884))
    - Reduce database load of `/sync` when presence is enabled. ([\#12885](https://github.com/matrix-org/synapse/issues/12885))
    - Refactor `have_seen_events` to reduce memory consumed when processing federation traffic. ([\#12886](https://github.com/matrix-org/synapse/issues/12886))
    - Refactor receipt linearization code. ([\#12888](https://github.com/matrix-org/synapse/issues/12888))
    - Add type annotations to `synapse.logging.opentracing`. ([\#12894](https://github.com/matrix-org/synapse/issues/12894))
    - Remove PyNaCl occurrences directly used in Synapse code. ([\#12902](https://github.com/matrix-org/synapse/issues/12902))
    - Bump types-jsonschema from 4.4.1 to 4.4.6. ([\#12912](https://github.com/matrix-org/synapse/issues/12912))
    - Rename storage classes. ([\#12913](https://github.com/matrix-org/synapse/issues/12913))
    - Preparation for database schema simplifications: stop reading from `event_edges.room_id`. ([\#12914](https://github.com/matrix-org/synapse/issues/12914))
    - Check if we are in a virtual environment before overriding the `PYTHONPATH` environment variable in the demo script. ([\#12916](https://github.com/matrix-org/synapse/issues/12916))
    - Improve the logging when signature checks on events fail. ([\#12925](https://github.com/matrix-org/synapse/issues/12925))
    
    
  • v1.61.0rc1
    Synapse 1.61.0rc1 (2022-06-07)
    ==============================
    
    This release removes support for the non-standard feature known both as 'groups' and as 'communities', which have been superseded by *Spaces*.
    
    Features
    --------
    
    - Add new `media_retention` options to the homeserver config for routinely cleaning up non-recently accessed media. ([\#12732](https://github.com/matrix-org/synapse/issues/12732), [\#12972](https://github.com/matrix-org/synapse/issues/12972), [\#12977](https://github.com/matrix-org/synapse/issues/12977))
    - Experimental support for [MSC3772](https://github.com/matrix-org/matrix-spec-proposals/pull/3772): Push rule for mutually related events. ([\#12740](https://github.com/matrix-org/synapse/issues/12740), [\#12859](https://github.com/matrix-org/synapse/issues/12859))
    - Update to the `check_event_for_spam` module callback: Deprecate the current callback signature, replace it with a new signature that is both less ambiguous (replacing booleans with explicit allow/block) and more powerful (ability to return explicit error codes). ([\#12808](https://github.com/matrix-org/synapse/issues/12808))
    - Add storage and module API methods to get monthly active users (and their corresponding appservices) within an optionally specified time range. ([\#12838](https://github.com/matrix-org/synapse/issues/12838), [\#12917](https://github.com/matrix-org/synapse/issues/12917))
    - Support the new error code `ORG.MATRIX.MSC3823.USER_ACCOUNT_SUSPENDED` from [MSC3823](https://github.com/matrix-org/matrix-spec-proposals/pull/3823). ([\#12845](https://github.com/matrix-org/synapse/issues/12845), [\#12923](https://github.com/matrix-org/synapse/issues/12923))
    - Add a configurable background job to delete stale devices. ([\#12855](https://github.com/matrix-org/synapse/issues/12855))
    - Improve URL previews for pages with empty elements. ([\#12951](https://github.com/matrix-org/synapse/issues/12951))
    - Allow updating a user's password using the admin API without logging out their devices. Contributed by @jcgruenhage. ([\#12952](https://github.com/matrix-org/synapse/issues/12952))
    
    Bugfixes
    --------
    
    - Always send an `access_token` in `/thirdparty/` requests to appservices, as required by the [Application Service API specification](https://spec.matrix.org/v1.1/application-service-api/#third-party-networks). ([\#12746](https://github.com/matrix-org/synapse/issues/12746))
    - Implement [MSC3816](https://github.com/matrix-org/matrix-spec-proposals/pull/3816): sending the root event in a thread should count as having 'participated' in it. ([\#12766](https://github.com/matrix-org/synapse/issues/12766))
    - Delete events from the `federation_inbound_events_staging` table when a room is purged through the admin API. ([\#12784](https://github.com/matrix-org/synapse/issues/12784))
    - Fix a bug where we did not correctly handle invalid device list updates over federation. Contributed by Carl Bordum Hansen. ([\#12829](https://github.com/matrix-org/synapse/issues/12829))
    - Fix a bug which allowed multiple async operations to access database locks concurrently. Contributed by @sumnerevans @ Beeper. ([\#12832](https://github.com/matrix-org/synapse/issues/12832))
    - Fix an issue introduced in Synapse 0.34 where the `/notifications` endpoint would only return notifications if a user registered at least one pusher. Contributed by Famedly. ([\#12840](https://github.com/matrix-org/synapse/issues/12840))
    - Fix a bug where servers using a Postgres database would fail to backfill from an insertion event when MSC2716 is enabled (`experimental_features.msc2716_enabled`). ([\#12843](https://github.com/matrix-org/synapse/issues/12843))
    - Fix [MSC3787](https://github.com/matrix-org/matrix-spec-proposals/pull/3787) rooms being omitted from room directory, room summary and space hierarchy responses. ([\#12858](https://github.com/matrix-org/synapse/issues/12858))
    - Fix a bug introduced in Synapse 1.54.0 which could sometimes cause exceptions when handling federated traffic. ([\#12877](https://github.com/matrix-org/synapse/issues/12877))
    - Fix a bug introduced in Synapse 1.59.0 which caused room deletion to fail with a foreign key violation error. ([\#12889](https://github.com/matrix-org/synapse/issues/12889))
    - Fix a long-standing bug which caused the `/messages` endpoint to return an incorrect `end` attribute when there were no more events. Contributed by @Vetchu. ([\#12903](https://github.com/matrix-org/synapse/issues/12903))
    - Fix a bug introduced in Synapse 1.58.0 where `/sync` would fail if the most recent event in a room was a redaction of an event that has since been purged. ([\#12905](https://github.com/matrix-org/synapse/issues/12905))
    - Fix a potential memory leak when generating thumbnails. ([\#12932](https://github.com/matrix-org/synapse/issues/12932))
    - Fix a long-standing bug where a URL preview would break if the image failed to download. ([\#12950](https://github.com/matrix-org/synapse/issues/12950))
    
    Improved Documentation
    ----------------------
    
    - Fix typographical errors in documentation. ([\#12863](https://github.com/matrix-org/synapse/issues/12863))
    - Fix documentation incorrectly stating the `sendToDevice` endpoint can be directed at generic workers. Contributed by Nick @ Beeper. ([\#12867](https://github.com/matrix-org/synapse/issues/12867))
    
    Deprecations and Removals
    -------------------------
    
    - Remove support for the non-standard groups/communities feature from Synapse. ([\#12553](https://github.com/matrix-org/synapse/issues/12553), [\#12558](https://github.com/matrix-org/synapse/issues/12558), [\#12563](https://github.com/matrix-org/synapse/issues/12563), [\#12895](https://github.com/matrix-org/synapse/issues/12895), [\#12897](https://github.com/matrix-org/synapse/issues/12897), [\#12899](https://github.com/matrix-org/synapse/issues/12899), [\#12900](https://github.com/matrix-org/synapse/issues/12900), [\#12936](https://github.com/matrix-org/synapse/issues/12936), [\#12966](https://github.com/matrix-org/synapse/issues/12966))
    - Remove contributed `kick_users.py` script. This is broken under Python 3, and is not added to the environment when `pip install`ing Synapse. ([\#12908](https://github.com/matrix-org/synapse/issues/12908))
    - Remove `contrib/jitsimeetbridge`. This was an unused experiment that hasn't been meaningfully changed since 2014. ([\#12909](https://github.com/matrix-org/synapse/issues/12909))
    - Remove unused `contrib/experiements/cursesio.py` script, which fails to run under Python 3. ([\#12910](https://github.com/matrix-org/synapse/issues/12910))
    - Remove unused `contrib/experiements/test_messaging.py` script. This fails to run on Python 3. ([\#12911](https://github.com/matrix-org/synapse/issues/12911))
    
    Internal Changes
    ----------------
    
    - Test Synapse against Complement with workers. ([\#12810](https://github.com/matrix-org/synapse/issues/12810), [\#12933](https://github.com/matrix-org/synapse/issues/12933))
    - Reduce the amount of state we pull from the DB. ([\#12811](https://github.com/matrix-org/synapse/issues/12811), [\#12964](https://github.com/matrix-org/synapse/issues/12964))
    - Try other homeservers when re-syncing state for rooms with partial state. ([\#12812](https://github.com/matrix-org/synapse/issues/12812))
    - Resume state re-syncing for rooms with partial state after a Synapse restart. ([\#12813](https://github.com/matrix-org/synapse/issues/12813))
    - Remove Mutual Rooms' ([MSC2666](https://github.com/matrix-org/matrix-spec-proposals/pull/2666)) endpoint dependency on the User Directory. ([\#12836](https://github.com/matrix-org/synapse/issues/12836))
    - Experimental: expand `check_event_for_spam` with ability to return additional fields. This enables spam-checker implementations to experiment with mechanisms to give users more information about why they are blocked and whether any action is needed from them to be unblocked. ([\#12846](https://github.com/matrix-org/synapse/issues/12846))
    - Remove `dont_notify` from the `.m.rule.room.server_acl` rule. ([\#12849](https://github.com/matrix-org/synapse/issues/12849))
    - Remove the unstable `/hierarchy` endpoint from [MSC2946](https://github.com/matrix-org/matrix-doc/pull/2946). ([\#12851](https://github.com/matrix-org/synapse/issues/12851))
    - Pull out less state when handling gaps in room DAG. ([\#12852](https://github.com/matrix-org/synapse/issues/12852), [\#12904](https://github.com/matrix-org/synapse/issues/12904))
    - Clean-up the push rules datastore. ([\#12856](https://github.com/matrix-org/synapse/issues/12856))
    - Correct a type annotation in the URL preview source code. ([\#12860](https://github.com/matrix-org/synapse/issues/12860))
    - Update `pyjwt` dependency to [2.4.0](https://github.com/jpadilla/pyjwt/releases/tag/2.4.0). ([\#12865](https://github.com/matrix-org/synapse/issues/12865))
    - Enable the `/account/whoami` endpoint on synapse worker processes. Contributed by Nick @ Beeper. ([\#12866](https://github.com/matrix-org/synapse/issues/12866))
    - Enable the `batch_send` endpoint on synapse worker processes. Contributed by Nick @ Beeper. ([\#12868](https://github.com/matrix-org/synapse/issues/12868))
    - Don't generate empty AS transactions when the AS is flagged as down. Contributed by Nick @ Beeper. ([\#12869](https://github.com/matrix-org/synapse/issues/12869))
    - Fix up the variable `state_store` naming. ([\#12871](https://github.com/matrix-org/synapse/issues/12871))
    - Faster room joins: when querying the current state of the room, wait for state to be populated. ([\#12872](https://github.com/matrix-org/synapse/issues/12872))
    - Avoid running queries which will never result in deletions. ([\#12879](https://github.com/matrix-org/synapse/issues/12879))
    - Use constants for EDU types. ([\#12884](https://github.com/matrix-org/synapse/issues/12884))
    - Reduce database load of `/sync` when presence is enabled. ([\#12885](https://github.com/matrix-org/synapse/issues/12885))
    - Refactor `have_seen_events` to reduce memory consumed when processing federation traffic. ([\#12886](https://github.com/matrix-org/synapse/issues/12886))
    - Refactor receipt linearization code. ([\#12888](https://github.com/matrix-org/synapse/issues/12888))
    - Add type annotations to `synapse.logging.opentracing`. ([\#12894](https://github.com/matrix-org/synapse/issues/12894))
    - Remove PyNaCl occurrences directly used in Synapse code. ([\#12902](https://github.com/matrix-org/synapse/issues/12902))
    - Bump types-jsonschema from 4.4.1 to 4.4.6. ([\#12912](https://github.com/matrix-org/synapse/issues/12912))
    - Rename storage classes. ([\#12913](https://github.com/matrix-org/synapse/issues/12913))
    - Preparation for database schema simplifications: stop reading from `event_edges.room_id`. ([\#12914](https://github.com/matrix-org/synapse/issues/12914))
    - Check if we are in a virtual environment before overriding the `PYTHONPATH` environment variable in the demo script. ([\#12916](https://github.com/matrix-org/synapse/issues/12916))
    - Improve the logging when signature checks on events fail. ([\#12925](https://github.com/matrix-org/synapse/issues/12925))
    
    
  • v1.60.0
    5984ada6 · 1.60.0 ·
    Synapse 1.60.0 (2022-05-31)
    ===========================
    
    This release of Synapse adds a unique index to the `state_group_edges` table, in
    order to prevent accidentally introducing duplicate information (for example,
    because a database backup was restored multiple times). If your Synapse database
    already has duplicate rows in this table, this could fail with an error and
    require manual remediation.
    
    Additionally, the signature of the `check_event_for_spam` module callback has changed.
    The previous signature has been deprecated and remains working for now. Module authors
    should update their modules to use the new signature where possible.
    
    See [the upgrade notes](https://github.com/matrix-org/synapse/blob/develop/docs/upgrade.md#upgrading-to-v1600)
    for more details.
    
    Bugfixes
    --------
    
    - Fix a bug introduced in Synapse 1.60.0rc1 that would break some imports from `synapse.module_api`. ([\#12918](https://github.com/matrix-org/synapse/issues/12918))
    
    Synapse 1.60.0rc2 (2022-05-27)
    ==============================
    
    Features
    --------
    
    - Add an option allowing users to use their password to reauthenticate for privileged actions even though password login is disabled. ([\#12883](https://github.com/matrix-org/synapse/issues/12883))
    
    Bugfixes
    --------
    
    - Explicitly close `ijson` coroutines once we are done with them, instead of leaving the garbage collector to close them. ([\#12875](https://github.com/matrix-org/synapse/issues/12875))
    
    Internal Changes
    ----------------
    
    - Improve URL previews by not including the content of media tags in the generated description. ([\#12887](https://github.com/matrix-org/synapse/issues/12887))
    
    Synapse 1.60.0rc1 (2022-05-24)
    ==============================
    
    Features
    --------
    
    - Measure the time taken in spam-checking callbacks and expose those measurements as metrics. ([\#12513](https://github.com/matrix-org/synapse/issues/12513))
    - Add a `default_power_level_content_override` config option to set default room power levels per room preset. ([\#12618](https://github.com/matrix-org/synapse/issues/12618))
    - Add support for [MSC3787: Allowing knocks to restricted rooms](https://github.com/matrix-org/matrix-spec-proposals/pull/3787). ([\#12623](https://github.com/matrix-org/synapse/issues/12623))
    - Send `USER_IP` commands on a different Redis channel, in order to reduce traffic to workers that do not process these commands. ([\#12672](https://github.com/matrix-org/synapse/issues/12672), [\#12809](https://github.com/matrix-org/synapse/issues/12809))
    - Synapse will now reload [cache config](https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#caching) when it receives a [SIGHUP](https://en.wikipedia.org/wiki/SIGHUP) signal. ([\#12673](https://github.com/matrix-org/synapse/issues/12673))
    - Add a config options to allow for auto-tuning of caches. ([\#12701](https://github.com/matrix-org/synapse/issues/12701))
    - Update [MSC2716](https://github.com/matrix-org/matrix-spec-proposals/pull/2716) implementation to process marker events from the current state to avoid markers being lost in timeline gaps for federated servers which would cause the imported history to be undiscovered. ([\#12718](https://github.com/matrix-org/synapse/issues/12718))
    - Add a `drop_federated_event` callback to `SpamChecker` to disregard inbound federated events before they take up much processing power, in an emergency. ([\#12744](https://github.com/matrix-org/synapse/issues/12744))
    - Implement [MSC3818: Copy room type on upgrade](https://github.com/matrix-org/matrix-spec-proposals/pull/3818). ([\#12786](https://github.com/matrix-org/synapse/issues/12786), [\#12792](https://github.com/matrix-org/synapse/issues/12792))
    - Update to the `check_event_for_spam` module callback. Deprecate the current callback signature, replace it with a new signature that is both less ambiguous (replacing booleans with explicit allow/block) and more powerful (ability to return explicit error codes). ([\#12808](https://github.com/matrix-org/synapse/issues/12808))
    
    Bugfixes
    --------
    
    - Fix a bug introduced in Synapse 1.7.0 that would prevent events from being sent to clients if there's a retention policy in the room when the support for retention policies is disabled. ([\#12611](https://github.com/matrix-org/synapse/issues/12611))
    - Fix a bug introduced in Synapse 1.57.0 where `/messages` would throw a 500 error when querying for a non-existent room. ([\#12683](https://github.com/matrix-org/synapse/issues/12683))
    - Add a unique index to `state_group_edges` to prevent duplicates being accidentally introduced and the consequential impact to performance. ([\#12687](https://github.com/matrix-org/synapse/issues/12687))
    - Fix a long-standing bug where an empty room would be created when a user with an insufficient power level tried to upgrade a room. ([\#12696](https://github.com/matrix-org/synapse/issues/12696))
    - Fix a bug introduced in Synapse 1.30.0 where empty rooms could be automatically created if a monthly active users limit is set. ([\#12713](https://github.com/matrix-org/synapse/issues/12713))
    - Fix push to dismiss notifications when read on another client. Contributed by @SpiritCroc @ Beeper. ([\#12721](https://github.com/matrix-org/synapse/issues/12721))
    - Fix poor database performance when reading the cache invalidation stream for large servers with lots of workers. ([\#12747](https://github.com/matrix-org/synapse/issues/12747))
    - Delete events from the `federation_inbound_events_staging` table when a room is purged through the admin API. ([\#12770](https://github.com/matrix-org/synapse/issues/12770))
    - Give a meaningful error message when a client tries to create a room with an invalid alias localpart. ([\#12779](https://github.com/matrix-org/synapse/issues/12779))
    - Fix a bug introduced in 1.43.0 where a file (`providers.json`) was never closed. Contributed by @arkamar. ([\#12794](https://github.com/matrix-org/synapse/issues/12794))
    - Fix a long-standing bug where finished log contexts would be re-started when failing to contact remote homeservers. ([\#12803](https://github.com/matrix-org/synapse/issues/12803))
    - Fix a bug, introduced in Synapse 1.21.0, that led to media thumbnails being unusable before the index has been added in the background. ([\#12823](https://github.com/matrix-org/synapse/issues/12823))
    
    Updates to the Docker image
    ---------------------------
    
    - Fix the docker file after a dependency update. ([\#12853](https://github.com/matrix-org/synapse/issues/12853))
    
    Improved Documentation
    ----------------------
    
    - Fix a typo in the Media Admin API documentation. ([\#12715](https://github.com/matrix-org/synapse/issues/12715))
    - Update the OpenID Connect example for Keycloak to be compatible with newer versions of Keycloak. Contributed by @nhh. ([\#12727](https://github.com/matrix-org/synapse/issues/12727))
    - Fix typo in server listener documentation. ([\#12742](https://github.com/matrix-org/synapse/issues/12742))
    - Link to the configuration manual from the welcome page of the documentation. ([\#12748](https://github.com/matrix-org/synapse/issues/12748))
    - Fix typo in `run_background_tasks_on` option name in configuration manual documentation. ([\#12749](https://github.com/matrix-org/synapse/issues/12749))
    - Add information regarding the `rc_invites` ratelimiting option to the configuration docs. ([\#12759](https://github.com/matrix-org/synapse/issues/12759))
    - Add documentation for cancellation of request processing. ([\#12761](https://github.com/matrix-org/synapse/issues/12761))
    - Recommend using docker to run tests against postgres. ([\#12765](https://github.com/matrix-org/synapse/issues/12765))
    - Add missing user directory endpoint from the generic worker documentation. Contributed by @olmari. ([\#12773](https://github.com/matrix-org/synapse/issues/12773))
    - Add additional info to documentation of config option `cache_autotuning`. ([\#12776](https://github.com/matrix-org/synapse/issues/12776))
    - Update configuration manual documentation to document size-related suffixes. ([\#12777](https://github.com/matrix-org/synapse/issues/12777))
    - Fix invalid YAML syntax in the example documentation for the `url_preview_accept_language` config option. ([\#12785](https://github.com/matrix-org/synapse/issues/12785))
    
    Deprecations and Removals
    -------------------------
    
    - Require a body in POST requests to `/rooms/{roomId}/receipt/{receiptType}/{eventId}`, as required by the [Matrix specification](https://spec.matrix.org/v1.2/client-server-api/#post_matrixclientv3roomsroomidreceiptreceipttypeeventid). This breaks compatibility with Element Android 1.2.0 and earlier: users of those clients will be unable to send read receipts. ([\#12709](https://github.com/matrix-org/synapse/issues/12709))
    
    Internal Changes
    ----------------
    
    - Improve event caching mechanism to avoid having multiple copies of an event in memory at a time. ([\#10533](https://github.com/matrix-org/synapse/issues/10533))
    - Preparation for faster-room-join work: return subsets of room state which we already have, immediately. ([\#12498](https://github.com/matrix-org/synapse/issues/12498))
    - Add `@cancellable` decorator, for use on endpoint methods that can be cancelled when clients disconnect. ([\#12586](https://github.com/matrix-org/synapse/issues/12586), [\#12588](https://github.com/matrix-org/synapse/issues/12588), [\#12630](https://github.com/matrix-org/synapse/issues/12630), [\#12694](https://github.com/matrix-org/synapse/issues/12694), [\#12698](https://github.com/matrix-org/synapse/issues/12698), [\#12699](https://github.com/matrix-org/synapse/issues/12699), [\#12700](https://github.com/matrix-org/synapse/issues/12700), [\#12705](https://github.com/matrix-org/synapse/issues/12705))
    - Enable cancellation of `GET /rooms/$room_id/members`, `GET /rooms/$room_id/state` and `GET /rooms/$room_id/state/$event_type/*` requests. ([\#12708](https://github.com/matrix-org/synapse/issues/12708))
    - Improve documentation of the `synapse.push` module. ([\#12676](https://github.com/matrix-org/synapse/issues/12676))
    - Refactor functions to on `PushRuleEvaluatorForEvent`. ([\#12677](https://github.com/matrix-org/synapse/issues/12677))
    - Preparation for database schema simplifications: stop writing to `event_reference_hashes`. ([\#12679](https://github.com/matrix-org/synapse/issues/12679))
    - Remove code which updates unused database column `application_services_state.last_txn`. ([\#12680](https://github.com/matrix-org/synapse/issues/12680))
    - Refactor `EventContext` class. ([\#12689](https://github.com/matrix-org/synapse/issues/12689))
    - Remove an unneeded class in the push code. ([\#12691](https://github.com/matrix-org/synapse/issues/12691))
    - Consolidate parsing of relation information from events. ([\#12693](https://github.com/matrix-org/synapse/issues/12693))
    - Convert namespace class `Codes` into a string enum. ([\#12703](https://github.com/matrix-org/synapse/issues/12703))
    - Optimize private read receipt filtering. ([\#12711](https://github.com/matrix-org/synapse/issues/12711))
    - Drop the logging level of status messages for the URL preview cache expiry job from INFO to DEBUG. ([\#12720](https://github.com/matrix-org/synapse/issues/12720))
    - Downgrade some OIDC errors to warnings in the logs, to reduce the noise of Sentry reports. ([\#12723](https://github.com/matrix-org/synapse/issues/12723))
    - Update configs used by Complement to allow more invites/3PID validations during tests. ([\#12731](https://github.com/matrix-org/synapse/issues/12731))
    - Fix a long-standing bug where the user directory background process would fail to make forward progress if a user included a null codepoint in their display name or avatar. ([\#12762](https://github.com/matrix-org/synapse/issues/12762))
    - Tweak the mypy plugin so that `@cached` can accept `on_invalidate=None`. ([\#12769](https://github.com/matrix-org/synapse/issues/12769))
    - Move methods that call `add_push_rule` to the `PushRuleStore` class. ([\#12772](https://github.com/matrix-org/synapse/issues/12772))
    - Make handling of federation Authorization header (more) compliant with RFC7230. ([\#12774](https://github.com/matrix-org/synapse/issues/12774))
    - Refactor `resolve_state_groups_for_events` to not pull out full state when no state resolution happens. ([\#12775](https://github.com/matrix-org/synapse/issues/12775))
    - Do not keep going if there are 5 back-to-back background update failures. ([\#12781](https://github.com/matrix-org/synapse/issues/12781))
    - Fix federation when using the demo scripts. ([\#12783](https://github.com/matrix-org/synapse/issues/12783))
    - The `hash_password` script now fails when it is called without specifying a config file. Contributed by @jae1911. ([\#12789](https://github.com/matrix-org/synapse/issues/12789))
    - Improve and fix type hints. ([\#12567](https://github.com/matrix-org/synapse/issues/12567), [\#12477](https://github.com/matrix-org/synapse/issues/12477), [\#12717](https://github.com/matrix-org/synapse/issues/12717), [\#12753](https://github.com/matrix-org/synapse/issues/12753), [\#12695](https://github.com/matrix-org/synapse/issues/12695), [\#12734](https://github.com/matrix-org/synapse/issues/12734), [\#12716](https://github.com/matrix-org/synapse/issues/12716), [\#12726](https://github.com/matrix-org/synapse/issues/12726), [\#12790](https://github.com/matrix-org/synapse/issues/12790), [\#12833](https://github.com/matrix-org/synapse/issues/12833))
    - Update EventContext `get_current_event_ids` and `get_prev_event_ids` to accept state filters and update calls where possible. ([\#12791](https://github.com/matrix-org/synapse/issues/12791))
    - Remove Caddy from the Synapse workers image used in Complement. ([\#12818](https://github.com/matrix-org/synapse/issues/12818))
    - Add Complement's shared registration secret to the Complement worker image. This fixes tests that depend on it. ([\#12819](https://github.com/matrix-org/synapse/issues/12819))
    - Support registering Application Services when running with workers under Complement. ([\#12826](https://github.com/matrix-org/synapse/issues/12826))
    - Disable 'faster room join' Complement tests when testing against Synapse with workers. ([\#12842](https://github.com/matrix-org/synapse/issues/12842))
    
    
  • v1.60.0rc2
    e409ab8e · 1.60.0rc2 ·
    Synapse 1.60.0rc2 (2022-05-27)
    ==============================
    
    This release of Synapse adds a unique index to the `state_group_edges` table, in
    order to prevent accidentally introducing duplicate information (for example,
    because a database backup was restored multiple times). If your Synapse database
    already has duplicate rows in this table, this could fail with an error and
    require manual remediation.
    
    Additionally, the signature of the `check_event_for_spam` module callback has changed.
    The previous signature has been deprecated and remains working for now. Module authors
    should update their modules to use the new signature where possible.
    
    See [the upgrade notes](https://github.com/matrix-org/synapse/blob/develop/docs/upgrade.md#upgrading-to-v1600)
    for more details.
    
    Features
    --------
    
    - Add an option allowing users to use their password to reauthenticate for privileged actions even though password login is disabled. ([\#12883](https://github.com/matrix-org/synapse/issues/12883))
    
    Bugfixes
    --------
    
    - Explicitly close `ijson` coroutines once we are done with them, instead of leaving the garbage collector to close them. ([\#12875](https://github.com/matrix-org/synapse/issues/12875))
    
    Internal Changes
    ----------------
    
    - Improve URL previews by not including the content of media tags in the generated description. ([\#12887](https://github.com/matrix-org/synapse/issues/12887))
    
  • v1.60.0rc1
    9385cd06 · Update changelog ·
    Synapse 1.60.0rc1 (2022-05-24)
    ==============================
    
    This release of Synapse adds a unique index to the `state_group_edges` table, in
    order to prevent accidentally introducing duplicate information (for example,
    because a database backup was restored multiple times). If your Synapse database
    already has duplicate rows in this table, this could fail with an error and
    require manual remediation.
    
    Additionally, the signature of the `check_event_for_spam` module callback has changed.
    The previous signature has been deprecated and remains working for now. Module authors
    should update their modules to use the new signature where possible.
    
    See [the upgrade notes](https://github.com/matrix-org/synapse/blob/develop/docs/upgrade.md#upgrading-to-v1600)
    for more details.
    
    Features
    --------
    
    - Measure the time taken in spam-checking callbacks and expose those measurements as metrics. ([\#12513](https://github.com/matrix-org/synapse/issues/12513))
    - Add a `default_power_level_content_override` config option to set default room power levels per room preset. ([\#12618](https://github.com/matrix-org/synapse/issues/12618))
    - Add support for [MSC3787: Allowing knocks to restricted rooms](https://github.com/matrix-org/matrix-spec-proposals/pull/3787). ([\#12623](https://github.com/matrix-org/synapse/issues/12623))
    - Send `USER_IP` commands on a different Redis channel, in order to reduce traffic to workers that do not process these commands. ([\#12672](https://github.com/matrix-org/synapse/issues/12672), [\#12809](https://github.com/matrix-org/synapse/issues/12809))
    - Synapse will now reload [cache config](https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#caching) when it receives a [SIGHUP](https://en.wikipedia.org/wiki/SIGHUP) signal. ([\#12673](https://github.com/matrix-org/synapse/issues/12673))
    - Add a config options to allow for auto-tuning of caches. ([\#12701](https://github.com/matrix-org/synapse/issues/12701))
    - Update [MSC2716](https://github.com/matrix-org/matrix-spec-proposals/pull/2716) implementation to process marker events from the current state to avoid markers being lost in timeline gaps for federated servers which would cause the imported history to be undiscovered. ([\#12718](https://github.com/matrix-org/synapse/issues/12718))
    - Add a `drop_federated_event` callback to `SpamChecker` to disregard inbound federated events before they take up much processing power, in an emergency. ([\#12744](https://github.com/matrix-org/synapse/issues/12744))
    - Implement [MSC3818: Copy room type on upgrade](https://github.com/matrix-org/matrix-spec-proposals/pull/3818). ([\#12786](https://github.com/matrix-org/synapse/issues/12786), [\#12792](https://github.com/matrix-org/synapse/issues/12792))
    - Update to the `check_event_for_spam` module callback. Deprecate the current callback signature, replace it with a new signature that is both less ambiguous (replacing booleans with explicit allow/block) and more powerful (ability to return explicit error codes). ([\#12808](https://github.com/matrix-org/synapse/issues/12808))
    
    Bugfixes
    --------
    
    - Fix a bug introduced in Synapse 1.7.0 that would prevent events from being sent to clients if there's a retention policy in the room when the support for retention policies is disabled. ([\#12611](https://github.com/matrix-org/synapse/issues/12611))
    - Fix a bug introduced in Synapse 1.57.0 where `/messages` would throw a 500 error when querying for a non-existent room. ([\#12683](https://github.com/matrix-org/synapse/issues/12683))
    - Add a unique index to `state_group_edges` to prevent duplicates being accidentally introduced and the consequential impact to performance. ([\#12687](https://github.com/matrix-org/synapse/issues/12687))
    - Fix a long-standing bug where an empty room would be created when a user with an insufficient power level tried to upgrade a room. ([\#12696](https://github.com/matrix-org/synapse/issues/12696))
    - Fix a bug introduced in Synapse 1.30.0 where empty rooms could be automatically created if a monthly active users limit is set. ([\#12713](https://github.com/matrix-org/synapse/issues/12713))
    - Fix push to dismiss notifications when read on another client. Contributed by @SpiritCroc @ Beeper. ([\#12721](https://github.com/matrix-org/synapse/issues/12721))
    - Fix poor database performance when reading the cache invalidation stream for large servers with lots of workers. ([\#12747](https://github.com/matrix-org/synapse/issues/12747))
    - Delete events from the `federation_inbound_events_staging` table when a room is purged through the admin API. ([\#12770](https://github.com/matrix-org/synapse/issues/12770))
    - Give a meaningful error message when a client tries to create a room with an invalid alias localpart. ([\#12779](https://github.com/matrix-org/synapse/issues/12779))
    - Fix a bug introduced in 1.43.0 where a file (`providers.json`) was never closed. Contributed by @arkamar. ([\#12794](https://github.com/matrix-org/synapse/issues/12794))
    - Fix a long-standing bug where finished log contexts would be re-started when failing to contact remote homeservers. ([\#12803](https://github.com/matrix-org/synapse/issues/12803))
    - Fix a bug, introduced in Synapse 1.21.0, that led to media thumbnails being unusable before the index has been added in the background. ([\#12823](https://github.com/matrix-org/synapse/issues/12823))
    
    Updates to the Docker image
    ---------------------------
    
    - Fix the docker file after a dependency update. ([\#12853](https://github.com/matrix-org/synapse/issues/12853))
    
    Improved Documentation
    ----------------------
    
    - Fix a typo in the Media Admin API documentation. ([\#12715](https://github.com/matrix-org/synapse/issues/12715))
    - Update the OpenID Connect example for Keycloak to be compatible with newer versions of Keycloak. Contributed by @nhh. ([\#12727](https://github.com/matrix-org/synapse/issues/12727))
    - Fix typo in server listener documentation. ([\#12742](https://github.com/matrix-org/synapse/issues/12742))
    - Link to the configuration manual from the welcome page of the documentation. ([\#12748](https://github.com/matrix-org/synapse/issues/12748))
    - Fix typo in `run_background_tasks_on` option name in configuration manual documentation. ([\#12749](https://github.com/matrix-org/synapse/issues/12749))
    - Add information regarding the `rc_invites` ratelimiting option to the configuration docs. ([\#12759](https://github.com/matrix-org/synapse/issues/12759))
    - Add documentation for cancellation of request processing. ([\#12761](https://github.com/matrix-org/synapse/issues/12761))
    - Recommend using docker to run tests against postgres. ([\#12765](https://github.com/matrix-org/synapse/issues/12765))
    - Add missing user directory endpoint from the generic worker documentation. Contributed by @olmari. ([\#12773](https://github.com/matrix-org/synapse/issues/12773))
    - Add additional info to documentation of config option `cache_autotuning`. ([\#12776](https://github.com/matrix-org/synapse/issues/12776))
    - Update configuration manual documentation to document size-related suffixes. ([\#12777](https://github.com/matrix-org/synapse/issues/12777))
    - Fix invalid YAML syntax in the example documentation for the `url_preview_accept_language` config option. ([\#12785](https://github.com/matrix-org/synapse/issues/12785))
    
    Deprecations and Removals
    -------------------------
    
    - Require a body in POST requests to `/rooms/{roomId}/receipt/{receiptType}/{eventId}`, as required by the [Matrix specification](https://spec.matrix.org/v1.2/client-server-api/#post_matrixclientv3roomsroomidreceiptreceipttypeeventid). This breaks compatibility with Element Android 1.2.0 and earlier: users of those clients will be unable to send read receipts. ([\#12709](https://github.com/matrix-org/synapse/issues/12709))
    
    Internal Changes
    ----------------
    
    - Improve event caching mechanism to avoid having multiple copies of an event in memory at a time. ([\#10533](https://github.com/matrix-org/synapse/issues/10533))
    - Preparation for faster-room-join work: return subsets of room state which we already have, immediately. ([\#12498](https://github.com/matrix-org/synapse/issues/12498))
    - Add `@cancellable` decorator, for use on endpoint methods that can be cancelled when clients disconnect. ([\#12586](https://github.com/matrix-org/synapse/issues/12586), [\#12588](https://github.com/matrix-org/synapse/issues/12588), [\#12630](https://github.com/matrix-org/synapse/issues/12630), [\#12694](https://github.com/matrix-org/synapse/issues/12694), [\#12698](https://github.com/matrix-org/synapse/issues/12698), [\#12699](https://github.com/matrix-org/synapse/issues/12699), [\#12700](https://github.com/matrix-org/synapse/issues/12700), [\#12705](https://github.com/matrix-org/synapse/issues/12705))
    - Enable cancellation of `GET /rooms/$room_id/members`, `GET /rooms/$room_id/state` and `GET /rooms/$room_id/state/$event_type/*` requests. ([\#12708](https://github.com/matrix-org/synapse/issues/12708))
    - Improve documentation of the `synapse.push` module. ([\#12676](https://github.com/matrix-org/synapse/issues/12676))
    - Refactor functions to on `PushRuleEvaluatorForEvent`. ([\#12677](https://github.com/matrix-org/synapse/issues/12677))
    - Preparation for database schema simplifications: stop writing to `event_reference_hashes`. ([\#12679](https://github.com/matrix-org/synapse/issues/12679))
    - Remove code which updates unused database column `application_services_state.last_txn`. ([\#12680](https://github.com/matrix-org/synapse/issues/12680))
    - Refactor `EventContext` class. ([\#12689](https://github.com/matrix-org/synapse/issues/12689))
    - Remove an unneeded class in the push code. ([\#12691](https://github.com/matrix-org/synapse/issues/12691))
    - Consolidate parsing of relation information from events. ([\#12693](https://github.com/matrix-org/synapse/issues/12693))
    - Convert namespace class `Codes` into a string enum. ([\#12703](https://github.com/matrix-org/synapse/issues/12703))
    - Optimize private read receipt filtering. ([\#12711](https://github.com/matrix-org/synapse/issues/12711))
    - Drop the logging level of status messages for the URL preview cache expiry job from INFO to DEBUG. ([\#12720](https://github.com/matrix-org/synapse/issues/12720))
    - Downgrade some OIDC errors to warnings in the logs, to reduce the noise of Sentry reports. ([\#12723](https://github.com/matrix-org/synapse/issues/12723))
    - Update configs used by Complement to allow more invites/3PID validations during tests. ([\#12731](https://github.com/matrix-org/synapse/issues/12731))
    - Fix a long-standing bug where the user directory background process would fail to make forward progress if a user included a null codepoint in their display name or avatar. ([\#12762](https://github.com/matrix-org/synapse/issues/12762))
    - Tweak the mypy plugin so that `@cached` can accept `on_invalidate=None`. ([\#12769](https://github.com/matrix-org/synapse/issues/12769))
    - Move methods that call `add_push_rule` to the `PushRuleStore` class. ([\#12772](https://github.com/matrix-org/synapse/issues/12772))
    - Make handling of federation Authorization header (more) compliant with RFC7230. ([\#12774](https://github.com/matrix-org/synapse/issues/12774))
    - Refactor `resolve_state_groups_for_events` to not pull out full state when no state resolution happens. ([\#12775](https://github.com/matrix-org/synapse/issues/12775))
    - Do not keep going if there are 5 back-to-back background update failures. ([\#12781](https://github.com/matrix-org/synapse/issues/12781))
    - Fix federation when using the demo scripts. ([\#12783](https://github.com/matrix-org/synapse/issues/12783))
    - The `hash_password` script now fails when it is called without specifying a config file. Contributed by @jae1911. ([\#12789](https://github.com/matrix-org/synapse/issues/12789))
    - Improve and fix type hints. ([\#12567](https://github.com/matrix-org/synapse/issues/12567), [\#12477](https://github.com/matrix-org/synapse/issues/12477), [\#12717](https://github.com/matrix-org/synapse/issues/12717), [\#12753](https://github.com/matrix-org/synapse/issues/12753), [\#12695](https://github.com/matrix-org/synapse/issues/12695), [\#12734](https://github.com/matrix-org/synapse/issues/12734), [\#12716](https://github.com/matrix-org/synapse/issues/12716), [\#12726](https://github.com/matrix-org/synapse/issues/12726), [\#12790](https://github.com/matrix-org/synapse/issues/12790), [\#12833](https://github.com/matrix-org/synapse/issues/12833))
    - Update EventContext `get_current_event_ids` and `get_prev_event_ids` to accept state filters and update calls where possible. ([\#12791](https://github.com/matrix-org/synapse/issues/12791))
    - Remove Caddy from the Synapse workers image used in Complement. ([\#12818](https://github.com/matrix-org/synapse/issues/12818))
    - Add Complement's shared registration secret to the Complement worker image. This fixes tests that depend on it. ([\#12819](https://github.com/matrix-org/synapse/issues/12819))
    - Support registering Application Services when running with workers under Complement. ([\#12826](https://github.com/matrix-org/synapse/issues/12826))
    - Disable 'faster room join' Complement tests when testing against Synapse with workers. ([\#12842](https://github.com/matrix-org/synapse/issues/12842))
    
    
  • v1.59.1
    d24a1486 · Fixup changelog ·
    Synapse 1.59.1 (2022-05-18)
    ===========================
    
    This release fixes a long-standing issue which could prevent Synapse's user directory for updating properly.
    
    Bugfixes
    ----------------
    
    - Fix a long-standing bug where the user directory background process would fail to make forward progress if a user included a null codepoint in their display name or avatar. Contributed by Nick @ Beeper. ([\#12762](https://github.com/matrix-org/synapse/issues/12762))
    
  • v1.59.0
    Synapse 1.59.0 (2022-05-17)
    ===========================
    
    Synapse 1.59 makes several changes that server administrators should be aware of:
    
    - Device name lookup over federation is now disabled by default. ([\#12616](https://github.com/matrix-org/synapse/issues/12616))
    - The `synapse.app.appservice` and `synapse.app.user_dir` worker application types are now deprecated. ([\#12452](https://github.com/matrix-org/synapse/issues/12452), [\#12654](https://github.com/matrix-org/synapse/issues/12654))
    
    See [the upgrade notes](https://github.com/matrix-org/synapse/blob/develop/docs/upgrade.md#upgrading-to-v1590) for more details.
    
    Additionally, this release removes the non-standard `m.login.jwt` login type from Synapse. It can be replaced with `org.matrix.login.jwt` for identical behaviour. This is only used if `jwt_config.enabled` is set to `true` in the configuration. ([\#12597](https://github.com/matrix-org/synapse/issues/12597))
    
    Bugfixes
    --------
    
    - Fix DB performance regression introduced in Synapse 1.59.0rc2. ([\#12745](https://github.com/matrix-org/synapse/issues/12745))
    
    Synapse 1.59.0rc2 (2022-05-16)
    ==============================
    
    Note: this release candidate includes a performance regression which can cause database disruption. Other release candidates in the v1.59.0 series are not affected, and a fix will be included in the v1.59.0 final release.
    
    Bugfixes
    --------
    
    - Fix a bug introduced in Synapse 1.58.0 where `/sync` would fail if the most recent event in a room was rejected. ([\#12729](https://github.com/matrix-org/synapse/issues/12729))
    
    Synapse 1.59.0rc1 (2022-05-10)
    ==============================
    
    Features
    --------
    
    - Support [MSC3266](https://github.com/matrix-org/matrix-doc/pull/3266) room summaries over federation. ([\#11507](https://github.com/matrix-org/synapse/issues/11507))
    - Implement [changes](https://github.com/matrix-org/matrix-spec-proposals/pull/2285/commits/4a77139249c2e830aec3c7d6bd5501a514d1cc27) to [MSC2285 (hidden read receipts)](https://github.com/matrix-org/matrix-spec-proposals/pull/2285). Contributed by @SimonBrandner. ([\#12168](https://github.com/matrix-org/synapse/issues/12168), [\#12635](https://github.com/matrix-org/synapse/issues/12635), [\#12636](https://github.com/matrix-org/synapse/issues/12636), [\#12670](https://github.com/matrix-org/synapse/issues/12670))
    - Extend the [module API](https://github.com/matrix-org/synapse/blob/release-v1.59/synapse/module_api/__init__.py) to allow modules to change actions for existing push rules of local users. ([\#12406](https://github.com/matrix-org/synapse/issues/12406))
    - Add the `notify_appservices_from_worker` configuration option (superseding `notify_appservices`) to allow a generic worker to be designated as the worker to send traffic to Application Services. ([\#12452](https://github.com/matrix-org/synapse/issues/12452))
    - Add the `update_user_directory_from_worker` configuration option (superseding `update_user_directory`) to allow a generic worker to be designated as the worker to update the user directory. ([\#12654](https://github.com/matrix-org/synapse/issues/12654))
    - Add new `enable_registration_token_3pid_bypass` configuration option to allow registrations via token as an alternative to verifying a 3pid. ([\#12526](https://github.com/matrix-org/synapse/issues/12526))
    - Implement [MSC3786](https://github.com/matrix-org/matrix-spec-proposals/pull/3786): Add a default push rule to ignore `m.room.server_acl` events. ([\#12601](https://github.com/matrix-org/synapse/issues/12601))
    - Add new `mau_appservice_trial_days` configuration option to specify a different trial period for users registered via an appservice. ([\#12619](https://github.com/matrix-org/synapse/issues/12619))
    
    Bugfixes
    --------
    
    - Fix a bug introduced in Synapse 1.48.0 where the latest thread reply provided failed to include the proper bundled aggregations. ([\#12273](https://github.com/matrix-org/synapse/issues/12273))
    - Fix a bug introduced in Synapse 1.22.0 where attempting to send a large amount of read receipts to an application service all at once would result in duplicate content and abnormally high memory usage. Contributed by Brad & Nick @ Beeper. ([\#12544](https://github.com/matrix-org/synapse/issues/12544))
    - Fix a bug introduced in Synapse 1.57.0 which could cause `Failed to calculate hosts in room` errors to be logged for outbound federation. ([\#12570](https://github.com/matrix-org/synapse/issues/12570))
    - Fix a long-standing bug where status codes would almost always get logged as `200!`, irrespective of the actual status code, when clients disconnect before a request has finished processing. ([\#12580](https://github.com/matrix-org/synapse/issues/12580))
    - Fix race when persisting an event and deleting a room that could lead to outbound federation breaking. ([\#12594](https://github.com/matrix-org/synapse/issues/12594))
    - Fix a bug introduced in Synapse 1.53.0 where bundled aggregations for annotations/edits were incorrectly calculated. ([\#12633](https://github.com/matrix-org/synapse/issues/12633))
    - Fix a long-standing bug where rooms containing power levels with string values could not be upgraded. ([\#12657](https://github.com/matrix-org/synapse/issues/12657))
    - Prevent memory leak from reoccurring when presence is disabled. ([\#12656](https://github.com/matrix-org/synapse/issues/12656))
    
    Updates to the Docker image
    ---------------------------
    
    - Explicitly opt-in to using [BuildKit-specific features](https://github.com/moby/buildkit/blob/master/frontend/dockerfile/docs/syntax.md) in the Dockerfile. This fixes issues with building images in some GitLab CI environments. ([\#12541](https://github.com/matrix-org/synapse/issues/12541))
    - Update the "Build docker images" GitHub Actions workflow to use `docker/metadata-action` to generate docker image tags, instead of a custom shell script. Contributed by @henryclw. ([\#12573](https://github.com/matrix-org/synapse/issues/12573))
    
    Improved Documentation
    ----------------------
    
    - Update SQL statements and replace use of old table `user_stats_historical` in docs for Synapse Admins. ([\#12536](https://github.com/matrix-org/synapse/issues/12536))
    - Add missing linebreak to `pipx` install instructions. ([\#12579](https://github.com/matrix-org/synapse/issues/12579))
    - Add information about the TCP replication module to docs. ([\#12621](https://github.com/matrix-org/synapse/issues/12621))
    - Fixes to the formatting of `README.rst`. ([\#12627](https://github.com/matrix-org/synapse/issues/12627))
    - Fix docs on how to run specific Complement tests using the `complement.sh` test runner. ([\#12664](https://github.com/matrix-org/synapse/issues/12664))
    
    Deprecations and Removals
    -------------------------
    
    - Remove unstable identifiers from [MSC3069](https://github.com/matrix-org/matrix-doc/pull/3069). ([\#12596](https://github.com/matrix-org/synapse/issues/12596))
    - Remove the unspecified `m.login.jwt` login type and the unstable `uk.half-shot.msc2778.login.application_service` from
      [MSC2778](https://github.com/matrix-org/matrix-doc/pull/2778). ([\#12597](https://github.com/matrix-org/synapse/issues/12597))
    - Synapse now requires at least Python 3.7.1 (up from 3.7.0), for compatibility with the latest Twisted trunk. ([\#12613](https://github.com/matrix-org/synapse/issues/12613))
    
    Internal Changes
    ----------------
    
    - Use supervisord to supervise Postgres and Caddy in the Complement image to reduce restart time. ([\#12480](https://github.com/matrix-org/synapse/issues/12480))
    - Immediately retry any requests that have backed off when a server comes back online. ([\#12500](https://github.com/matrix-org/synapse/issues/12500))
    - Use `make_awaitable` instead of `defer.succeed` for return values of mocks in tests. ([\#12505](https://github.com/matrix-org/synapse/issues/12505))
    - Consistently check if an object is a `frozendict`. ([\#12564](https://github.com/matrix-org/synapse/issues/12564))
    - Protect module callbacks with read semantics against cancellation. ([\#12568](https://github.com/matrix-org/synapse/issues/12568))
    - Improve comments and error messages around access tokens. ([\#12577](https://github.com/matrix-org/synapse/issues/12577))
    - Improve docstrings for the receipts store. ([\#12581](https://github.com/matrix-org/synapse/issues/12581))
    - Use constants for read-receipts in tests. ([\#12582](https://github.com/matrix-org/synapse/issues/12582))
    - Log status code of cancelled requests as 499 and avoid logging stack traces for them. ([\#12587](https://github.com/matrix-org/synapse/issues/12587), [\#12663](https://github.com/matrix-org/synapse/issues/12663))
    - Remove special-case for `twisted` logger from default log config. ([\#12589](https://github.com/matrix-org/synapse/issues/12589))
    - Use `getClientAddress` instead of the deprecated `getClientIP`. ([\#12599](https://github.com/matrix-org/synapse/issues/12599))
    - Add link to documentation in Grafana Dashboard. ([\#12602](https://github.com/matrix-org/synapse/issues/12602))
    - Reduce log spam when running multiple event persisters. ([\#12610](https://github.com/matrix-org/synapse/issues/12610))
    - Add extra debug logging to federation sender. ([\#12614](https://github.com/matrix-org/synapse/issues/12614))
    - Prevent remote homeservers from requesting local user device names by default. ([\#12616](https://github.com/matrix-org/synapse/issues/12616))
    - Add a consistency check on events which we read from the database. ([\#12620](https://github.com/matrix-org/synapse/issues/12620))
    - Remove use of the `constantly` library and switch to enums for `EventRedactBehaviour`. Contributed by @andrewdoh. ([\#12624](https://github.com/matrix-org/synapse/issues/12624))
    - Remove unused code related to receipts. ([\#12632](https://github.com/matrix-org/synapse/issues/12632))
    - Minor improvements to the scripts for running Synapse in worker mode under Complement. ([\#12637](https://github.com/matrix-org/synapse/issues/12637))
    - Move `pympler` back in to the `all` extras. ([\#12652](https://github.com/matrix-org/synapse/issues/12652))
    - Fix spelling of `M_UNRECOGNIZED` in comments. ([\#12665](https://github.com/matrix-org/synapse/issues/12665))
    - Release script: confirm the commit to be tagged before tagging. ([\#12556](https://github.com/matrix-org/synapse/issues/12556))
    - Fix a typo in the announcement text generated by the Synapse release development script. ([\#12612](https://github.com/matrix-org/synapse/issues/12612))
    
    - Fix scripts-dev to pass typechecking. ([\#12356](https://github.com/matrix-org/synapse/issues/12356))
    - Add some type hints to datastore. ([\#12485](https://github.com/matrix-org/synapse/issues/12485))
    - Remove unused `# type: ignore`s. ([\#12531](https://github.com/matrix-org/synapse/issues/12531))
    - Allow unused `# type: ignore` comments in bleeding edge CI jobs. ([\#12576](https://github.com/matrix-org/synapse/issues/12576))
    - Remove redundant lines of config from `mypy.ini`. ([\#12608](https://github.com/matrix-org/synapse/issues/12608))
    - Update to mypy 0.950. ([\#12650](https://github.com/matrix-org/synapse/issues/12650))
    - Use `Concatenate` to better annotate `_do_execute`. ([\#12666](https://github.com/matrix-org/synapse/issues/12666))
    - Use `ParamSpec` to refine type hints. ([\#12667](https://github.com/matrix-org/synapse/issues/12667))
    - Fix mypy against latest pillow stubs. ([\#12671](https://github.com/matrix-org/synapse/issues/12671))
    
    
  • v1.59.0rc2
    Synapse 1.59.0rc2 (2022-05-16)
    ==============================
    
    Synapse 1.59 makes several changes that server administrators should be aware of:
    
    - Device name lookup over federation is now disabled by default. ([\#12616](https://github.com/matrix-org/synapse/issues/12616))
    - The `synapse.app.appservice` and `synapse.app.user_dir` worker application types are now deprecated. ([\#12452](https://github.com/matrix-org/synapse/issues/12452), [\#12654](https://github.com/matrix-org/synapse/issues/12654))
    
    See [the upgrade notes](https://github.com/matrix-org/synapse/blob/develop/docs/upgrade.md#upgrading-to-v1590) for more details.
    
    Additionally, this release removes the non-standard `m.login.jwt` login type from Synapse. It can be replaced with `org.matrix.login.jwt` for identical behaviour. This is only used if `jwt_config.enabled` is set to `true` in the configuration. ([\#12597](https://github.com/matrix-org/synapse/issues/12597))
    
    Bugfixes
    --------
    
    - Fix a bug introduced in Synapse 1.58.0 where `/sync` would fail if the most recent event in a room was rejected. ([\#12729](https://github.com/matrix-org/synapse/issues/12729))
    
  • v1.59.0rc1
    efcd899f · other fixes ·
    Synapse 1.59.0rc1 (2022-05-10)
    ==============================
    
    This release makes several changes that server administrators should be aware of:
    
    - Device name lookup over federation is now disabled by default. ([\#12616](https://github.com/matrix-org/synapse/issues/12616))
    - The `synapse.app.appservice` and `synapse.app.user_dir` worker application types are now deprecated. ([\#12452](https://github.com/matrix-org/synapse/issues/12452), [\#12654](https://github.com/matrix-org/synapse/issues/12654))
    
    See [the upgrade notes](https://github.com/matrix-org/synapse/blob/develop/docs/upgrade.md#upgrading-to-v1590) for more details.
    
    Additionally, this release removes the non-standard `m.login.jwt` login type from Synapse. It can be replaced with `org.matrix.login.jwt` for identical behaviour. This is only used if `jwt_config.enabled` is set to `true` in the configuration. ([\#12597](https://github.com/matrix-org/synapse/issues/12597))
    
    Features
    --------
    
    - Support [MSC3266](https://github.com/matrix-org/matrix-doc/pull/3266) room summaries over federation. ([\#11507](https://github.com/matrix-org/synapse/issues/11507))
    - Implement [changes](https://github.com/matrix-org/matrix-spec-proposals/pull/2285/commits/4a77139249c2e830aec3c7d6bd5501a514d1cc27) to [MSC2285 (hidden read receipts)](https://github.com/matrix-org/matrix-spec-proposals/pull/2285). Contributed by @SimonBrandner. ([\#12168](https://github.com/matrix-org/synapse/issues/12168), [\#12635](https://github.com/matrix-org/synapse/issues/12635), [\#12636](https://github.com/matrix-org/synapse/issues/12636), [\#12670](https://github.com/matrix-org/synapse/issues/12670))
    - Extend the [module API](https://github.com/matrix-org/synapse/blob/release-v1.59/synapse/module_api/__init__.py) to allow modules to change actions for existing push rules of local users. ([\#12406](https://github.com/matrix-org/synapse/issues/12406))
    - Add the `notify_appservices_from_worker` configuration option (superseding `notify_appservices`) to allow a generic worker to be designated as the worker to send traffic to Application Services. ([\#12452](https://github.com/matrix-org/synapse/issues/12452))
    - Add the `update_user_directory_from_worker` configuration option (superseding `update_user_directory`) to allow a generic worker to be designated as the worker to update the user directory. ([\#12654](https://github.com/matrix-org/synapse/issues/12654))
    - Add new `enable_registration_token_3pid_bypass` configuration option to allow registrations via token as an alternative to verifying a 3pid. ([\#12526](https://github.com/matrix-org/synapse/issues/12526))
    - Implement [MSC3786](https://github.com/matrix-org/matrix-spec-proposals/pull/3786): Add a default push rule to ignore `m.room.server_acl` events. ([\#12601](https://github.com/matrix-org/synapse/issues/12601))
    - Add new `mau_appservice_trial_days` configuration option to specify a different trial period for users registered via an appservice. ([\#12619](https://github.com/matrix-org/synapse/issues/12619))
    
    Bugfixes
    --------
    
    - Fix a bug introduced in Synapse 1.48.0 where the latest thread reply provided failed to include the proper bundled aggregations. ([\#12273](https://github.com/matrix-org/synapse/issues/12273))
    - Fix a bug introduced in Synapse 1.22.0 where attempting to send a large amount of read receipts to an application service all at once would result in duplicate content and abnormally high memory usage. Contributed by Brad & Nick @ Beeper. ([\#12544](https://github.com/matrix-org/synapse/issues/12544))
    - Fix a bug introduced in Synapse 1.57.0 which could cause `Failed to calculate hosts in room` errors to be logged for outbound federation. ([\#12570](https://github.com/matrix-org/synapse/issues/12570))
    - Fix a long-standing bug where status codes would almost always get logged as `200!`, irrespective of the actual status code, when clients disconnect before a request has finished processing. ([\#12580](https://github.com/matrix-org/synapse/issues/12580))
    - Fix race when persisting an event and deleting a room that could lead to outbound federation breaking. ([\#12594](https://github.com/matrix-org/synapse/issues/12594))
    - Fix a bug introduced in Synapse 1.53.0 where bundled aggregations for annotations/edits were incorrectly calculated. ([\#12633](https://github.com/matrix-org/synapse/issues/12633))
    - Fix a long-standing bug where rooms containing power levels with string values could not be upgraded. ([\#12657](https://github.com/matrix-org/synapse/issues/12657))
    - Prevent memory leak from reoccurring when presence is disabled. ([\#12656](https://github.com/matrix-org/synapse/issues/12656))
    
    Updates to the Docker image
    ---------------------------
    
    - Explicitly opt-in to using [BuildKit-specific features](https://github.com/moby/buildkit/blob/master/frontend/dockerfile/docs/syntax.md) in the Dockerfile. This fixes issues with building images in some GitLab CI environments. ([\#12541](https://github.com/matrix-org/synapse/issues/12541))
    - Update the "Build docker images" GitHub Actions workflow to use `docker/metadata-action` to generate docker image tags, instead of a custom shell script. Contributed by @henryclw. ([\#12573](https://github.com/matrix-org/synapse/issues/12573))
    
    Improved Documentation
    ----------------------
    
    - Update SQL statements and replace use of old table `user_stats_historical` in docs for Synapse Admins. ([\#12536](https://github.com/matrix-org/synapse/issues/12536))
    - Add missing linebreak to `pipx` install instructions. ([\#12579](https://github.com/matrix-org/synapse/issues/12579))
    - Add information about the TCP replication module to docs. ([\#12621](https://github.com/matrix-org/synapse/issues/12621))
    - Fixes to the formatting of `README.rst`. ([\#12627](https://github.com/matrix-org/synapse/issues/12627))
    - Fix docs on how to run specific Complement tests using the `complement.sh` test runner. ([\#12664](https://github.com/matrix-org/synapse/issues/12664))
    
    Deprecations and Removals
    -------------------------
    
    - Remove unstable identifiers from [MSC3069](https://github.com/matrix-org/matrix-doc/pull/3069). ([\#12596](https://github.com/matrix-org/synapse/issues/12596))
    - Remove the unspecified `m.login.jwt` login type and the unstable `uk.half-shot.msc2778.login.application_service` from
      [MSC2778](https://github.com/matrix-org/matrix-doc/pull/2778). ([\#12597](https://github.com/matrix-org/synapse/issues/12597))
    - Synapse now requires at least Python 3.7.1 (up from 3.7.0), for compatibility with the latest Twisted trunk. ([\#12613](https://github.com/matrix-org/synapse/issues/12613))
    
    Internal Changes
    ----------------
    
    - Use supervisord to supervise Postgres and Caddy in the Complement image to reduce restart time. ([\#12480](https://github.com/matrix-org/synapse/issues/12480))
    - Immediately retry any requests that have backed off when a server comes back online. ([\#12500](https://github.com/matrix-org/synapse/issues/12500))
    - Use `make_awaitable` instead of `defer.succeed` for return values of mocks in tests. ([\#12505](https://github.com/matrix-org/synapse/issues/12505))
    - Consistently check if an object is a `frozendict`. ([\#12564](https://github.com/matrix-org/synapse/issues/12564))
    - Protect module callbacks with read semantics against cancellation. ([\#12568](https://github.com/matrix-org/synapse/issues/12568))
    - Improve comments and error messages around access tokens. ([\#12577](https://github.com/matrix-org/synapse/issues/12577))
    - Improve docstrings for the receipts store. ([\#12581](https://github.com/matrix-org/synapse/issues/12581))
    - Use constants for read-receipts in tests. ([\#12582](https://github.com/matrix-org/synapse/issues/12582))
    - Log status code of cancelled requests as 499 and avoid logging stack traces for them. ([\#12587](https://github.com/matrix-org/synapse/issues/12587), [\#12663](https://github.com/matrix-org/synapse/issues/12663))
    - Remove special-case for `twisted` logger from default log config. ([\#12589](https://github.com/matrix-org/synapse/issues/12589))
    - Use `getClientAddress` instead of the deprecated `getClientIP`. ([\#12599](https://github.com/matrix-org/synapse/issues/12599))
    - Add link to documentation in Grafana Dashboard. ([\#12602](https://github.com/matrix-org/synapse/issues/12602))
    - Reduce log spam when running multiple event persisters. ([\#12610](https://github.com/matrix-org/synapse/issues/12610))
    - Add extra debug logging to federation sender. ([\#12614](https://github.com/matrix-org/synapse/issues/12614))
    - Prevent remote homeservers from requesting local user device names by default. ([\#12616](https://github.com/matrix-org/synapse/issues/12616))
    - Add a consistency check on events which we read from the database. ([\#12620](https://github.com/matrix-org/synapse/issues/12620))
    - Remove use of the `constantly` library and switch to enums for `EventRedactBehaviour`. Contributed by @andrewdoh. ([\#12624](https://github.com/matrix-org/synapse/issues/12624))
    - Remove unused code related to receipts. ([\#12632](https://github.com/matrix-org/synapse/issues/12632))
    - Minor improvements to the scripts for running Synapse in worker mode under Complement. ([\#12637](https://github.com/matrix-org/synapse/issues/12637))
    - Move `pympler` back in to the `all` extras. ([\#12652](https://github.com/matrix-org/synapse/issues/12652))
    - Fix spelling of `M_UNRECOGNIZED` in comments. ([\#12665](https://github.com/matrix-org/synapse/issues/12665))
    - Release script: confirm the commit to be tagged before tagging. ([\#12556](https://github.com/matrix-org/synapse/issues/12556))
    - Fix a typo in the announcement text generated by the Synapse release development script. ([\#12612](https://github.com/matrix-org/synapse/issues/12612))
    
    - Fix scripts-dev to pass typechecking. ([\#12356](https://github.com/matrix-org/synapse/issues/12356))
    - Add some type hints to datastore. ([\#12485](https://github.com/matrix-org/synapse/issues/12485))
    - Remove unused `# type: ignore`s. ([\#12531](https://github.com/matrix-org/synapse/issues/12531))
    - Allow unused `# type: ignore` comments in bleeding edge CI jobs. ([\#12576](https://github.com/matrix-org/synapse/issues/12576))
    - Remove redundant lines of config from `mypy.ini`. ([\#12608](https://github.com/matrix-org/synapse/issues/12608))
    - Update to mypy 0.950. ([\#12650](https://github.com/matrix-org/synapse/issues/12650))
    - Use `Concatenate` to better annotate `_do_execute`. ([\#12666](https://github.com/matrix-org/synapse/issues/12666))
    - Use `ParamSpec` to refine type hints. ([\#12667](https://github.com/matrix-org/synapse/issues/12667))
    - Fix mypy against latest pillow stubs. ([\#12671](https://github.com/matrix-org/synapse/issues/12671))
    
    
  • v1.58.1
    Synapse 1.58.1 (2022-05-05)
    ===========================
    
    This patch release includes a fix to the Debian packages, installing the
    `systemd` and `cache_memory` extra package groups, which were incorrectly
    omitted in v1.58.0. This primarily prevented Synapse from starting
    when the `systemd.journal.JournalHandler` log handler was configured.
    See [#12631](https://github.com/matrix-org/synapse/issues/12631) for further information.
    
    Otherwise, no significant changes since 1.58.0.
    
  • v1.58.0
    Synapse 1.58.0 (2022-05-03)
    ===========================
    
    As of this release, the groups/communities feature in Synapse is now disabled by default. See [\#11584](https://github.com/matrix-org/synapse/issues/11584) for details. As mentioned in [the upgrade notes](https://github.com/matrix-org/synapse/blob/develop/docs/upgrade.md#upgrading-to-v1580), this feature will be removed in Synapse 1.61.
    
    No significant changes since 1.58.0rc2.
    
    Synapse 1.58.0rc2 (2022-04-26)
    ==============================
    
    This release candidate fixes bugs related to Synapse 1.58.0rc1's logic for handling device list updates.
    
    Bugfixes
    --------
    
    - Fix a bug introduced in Synapse 1.58.0rc1 where the main process could consume excessive amounts of CPU and memory while handling sentry logging failures. ([\#12554](https://github.com/matrix-org/synapse/issues/12554))
    - Fix a bug introduced in Synapse 1.58.0rc1 where opentracing contexts were not correctly sent to whitelisted remote servers with device lists updates. ([\#12555](https://github.com/matrix-org/synapse/issues/12555))
    
    Internal Changes
    ----------------
    
    - Reduce unnecessary work when handling remote device list updates. ([\#12557](https://github.com/matrix-org/synapse/issues/12557))
    
    Synapse 1.58.0rc1 (2022-04-26)
    ==============================
    
    Features
    --------
    
    - Implement [MSC3383](https://github.com/matrix-org/matrix-spec-proposals/pull/3383) for including the destination in server-to-server authentication headers. Contributed by @Bubu and @jcgruenhage for Famedly. ([\#11398](https://github.com/matrix-org/synapse/issues/11398))
    - Docker images and Debian packages from matrix.org now contain a locked set of Python dependencies, greatly improving build reproducibility. ([Board](https://github.com/orgs/matrix-org/projects/54), [\#11537](https://github.com/matrix-org/synapse/issues/11537))
    - Enable processing of device list updates asynchronously. ([\#12365](https://github.com/matrix-org/synapse/issues/12365), [\#12465](https://github.com/matrix-org/synapse/issues/12465))
    - Implement [MSC2815](https://github.com/matrix-org/matrix-spec-proposals/pull/2815) to allow room moderators to view redacted event content. Contributed by @tulir @ Beeper. ([\#12427](https://github.com/matrix-org/synapse/issues/12427))
    - Build Debian packages for Ubuntu 22.04 "Jammy Jellyfish". ([\#12543](https://github.com/matrix-org/synapse/issues/12543))
    
    Bugfixes
    --------
    
    - Prevent a sync request from removing a user's busy presence status. ([\#12213](https://github.com/matrix-org/synapse/issues/12213))
    - Fix bug with incremental sync missing events when rejoining/backfilling. Contributed by Nick @ Beeper. ([\#12319](https://github.com/matrix-org/synapse/issues/12319))
    - Fix a long-standing bug which incorrectly caused `GET /_matrix/client/v3/rooms/{roomId}/event/{eventId}` to return edited events rather than the original. ([\#12476](https://github.com/matrix-org/synapse/issues/12476))
    - Fix a bug introduced in Synapse 1.27.0 where the admin API for [deleting forward extremities](https://github.com/matrix-org/synapse/blob/erikj/fix_delete_event_response_count/docs/admin_api/rooms.md#deleting-forward-extremities) would always return a count of 1, no matter how many extremities were deleted. ([\#12496](https://github.com/matrix-org/synapse/issues/12496))
    - Fix a long-standing bug where the image thumbnails embedded into email notifications were broken. ([\#12510](https://github.com/matrix-org/synapse/issues/12510))
    - Fix a bug in the implementation of [MSC3202](https://github.com/matrix-org/matrix-spec-proposals/pull/3202) where Synapse would use the field name `device_unused_fallback_keys`, rather than `device_unused_fallback_key_types`. ([\#12520](https://github.com/matrix-org/synapse/issues/12520))
    - Fix a bug introduced in Synapse 0.99.3 which could cause Synapse to consume large amounts of RAM when back-paginating in a large room. ([\#12522](https://github.com/matrix-org/synapse/issues/12522))
    
    Improved Documentation
    ----------------------
    
    - Fix rendering of the documentation site when using the 'print' feature. ([\#12340](https://github.com/matrix-org/synapse/issues/12340))
    - Add a manual documenting config file options. ([\#12368](https://github.com/matrix-org/synapse/issues/12368), [\#12527](https://github.com/matrix-org/synapse/issues/12527))
    - Update documentation to reflect that both the `run_background_tasks_on` option and the options for moving stream writers off of the main process are no longer experimental. ([\#12451](https://github.com/matrix-org/synapse/issues/12451))
    - Update worker documentation and replace old `federation_reader` with `generic_worker`. ([\#12457](https://github.com/matrix-org/synapse/issues/12457))
    - Strongly recommend [Poetry](https://python-poetry.org/) for development. ([\#12475](https://github.com/matrix-org/synapse/issues/12475))
    - Add some example configurations for workers and update architectural diagram. ([\#12492](https://github.com/matrix-org/synapse/issues/12492))
    - Fix a broken link in `README.rst`. ([\#12495](https://github.com/matrix-org/synapse/issues/12495))
    - Add HAProxy delegation example with CORS headers to docs. ([\#12501](https://github.com/matrix-org/synapse/issues/12501))
    - Remove extraneous comma in User Admin API's device deletion section so that the example JSON is actually valid and works. Contributed by @olmari. ([\#12533](https://github.com/matrix-org/synapse/issues/12533))
    
    Deprecations and Removals
    -------------------------
    
    - The groups/communities feature in Synapse is now disabled by default. ([\#12344](https://github.com/matrix-org/synapse/issues/12344))
    - Remove unstable identifiers from [MSC3440](https://github.com/matrix-org/matrix-doc/pull/3440). ([\#12382](https://github.com/matrix-org/synapse/issues/12382))
    
    Internal Changes
    ----------------
    
    - Preparation for faster-room-join work: start a background process to resynchronise the room state after a room join. ([\#12394](https://github.com/matrix-org/synapse/issues/12394))
    - Preparation for faster-room-join work: Implement a tracking mechanism to allow functions to wait for full room state to arrive. ([\#12399](https://github.com/matrix-org/synapse/issues/12399))
    - Remove an unstable identifier from [MSC3083](https://github.com/matrix-org/matrix-doc/pull/3083). ([\#12395](https://github.com/matrix-org/synapse/issues/12395))
    - Run CI in the locked [Poetry](https://python-poetry.org/) environment, and remove corresponding `tox` jobs. ([\#12425](https://github.com/matrix-org/synapse/issues/12425), [\#12434](https://github.com/matrix-org/synapse/issues/12434), [\#12438](https://github.com/matrix-org/synapse/issues/12438), [\#12441](https://github.com/matrix-org/synapse/issues/12441), [\#12449](https://github.com/matrix-org/synapse/issues/12449), [\#12478](https://github.com/matrix-org/synapse/issues/12478), [\#12514](https://github.com/matrix-org/synapse/issues/12514), [\#12472](https://github.com/matrix-org/synapse/issues/12472))
    - Change Mutual Rooms' `unstable_features` flag to `uk.half-shot.msc2666.mutual_rooms` which matches the current iteration of [MSC2666](https://github.com/matrix-org/matrix-spec-proposals/pull/2666). ([\#12445](https://github.com/matrix-org/synapse/issues/12445))
    - Fix typo in the release script help string. ([\#12450](https://github.com/matrix-org/synapse/issues/12450))
    - Fix a minor typo in the Debian changelogs generated by the release script. ([\#12497](https://github.com/matrix-org/synapse/issues/12497))
    - Reintroduce the list of targets to the linter script, to avoid linting unwanted local-only directories during development. ([\#12455](https://github.com/matrix-org/synapse/issues/12455))
    - Limit length of `device_id` to less than 512 characters. ([\#12454](https://github.com/matrix-org/synapse/issues/12454))
    - Dockerfile-workers: reduce the amount we install in the image. ([\#12464](https://github.com/matrix-org/synapse/issues/12464))
    - Dockerfile-workers: give the master its own log config. ([\#12466](https://github.com/matrix-org/synapse/issues/12466))
    - complement-synapse-workers: factor out separate entry point script. ([\#12467](https://github.com/matrix-org/synapse/issues/12467))
    - Back out experimental implementation of [MSC2314](https://github.com/matrix-org/matrix-spec-proposals/pull/2314). ([\#12474](https://github.com/matrix-org/synapse/issues/12474))
    - Fix grammatical error in federation error response when the room version of a room is unknown. ([\#12483](https://github.com/matrix-org/synapse/issues/12483))
    - Remove unnecessary configuration overrides in tests. ([\#12511](https://github.com/matrix-org/synapse/issues/12511))
    - Refactor the relations code for clarity. ([\#12519](https://github.com/matrix-org/synapse/issues/12519))
    - Add type hints so `docker` and `stubs` directories pass `mypy --disallow-untyped-defs`. ([\#12528](https://github.com/matrix-org/synapse/issues/12528))
    - Update `delay_cancellation` to accept any awaitable, rather than just `Deferred`s. ([\#12468](https://github.com/matrix-org/synapse/issues/12468))
    - Handle cancellation in `EventsWorkerStore._get_events_from_cache_or_db`. ([\#12529](https://github.com/matrix-org/synapse/issues/12529))
    
  • v1.58.0rc2
    9cfecd2d · Adjust changelog ·
    Synapse 1.58.0rc2 (2022-04-26)
    ==============================
    
    This release candidate fixes bugs related to Synapse 1.58.0rc1's logic for handling device list updates.
    
    Bugfixes
    --------
    
    - Fix a bug introduced in Synapse 1.58.0rc1 where the main process could consume excessive amounts of CPU and memory while handling sentry logging failures. ([\#12554](https://github.com/matrix-org/synapse/issues/12554))
    - Fix a bug introduced in Synapse 1.58.0rc1 where opentracing contexts were not correctly sent to whitelisted remote servers with device lists updates. ([\#12555](https://github.com/matrix-org/synapse/issues/12555))
    
    Internal Changes
    ----------------
    
    - Reduce unnecessary work when handling remote device list updates. ([\#12557](https://github.com/matrix-org/synapse/issues/12557))
    
  • v1.58.0rc1
    Synapse 1.58.0rc1 (2022-04-26)
    ==============================
    
    As of this release, the groups/communities feature in Synapse is now disabled by default. See [\#11584](https://github.com/matrix-org/synapse/issues/11584) for details. As mentioned in [the upgrade notes](https://github.com/matrix-org/synapse/blob/develop/docs/upgrade.md#upgrading-to-v1580), this feature will be removed in Synapse 1.61.
    
    Features
    --------
    
    - Implement [MSC3383](https://github.com/matrix-org/matrix-spec-proposals/pull/3383) for including the destination in server-to-server authentication headers. Contributed by @Bubu and @jcgruenhage for Famedly. ([\#11398](https://github.com/matrix-org/synapse/issues/11398))
    - Docker images and Debian packages from matrix.org now contain a locked set of Python dependencies, greatly improving build reproducibility. ([Board](https://github.com/orgs/matrix-org/projects/54), [\#11537](https://github.com/matrix-org/synapse/issues/11537))
    - Enable processing of device list updates asynchronously. ([\#12365](https://github.com/matrix-org/synapse/issues/12365), [\#12465](https://github.com/matrix-org/synapse/issues/12465))
    - Implement [MSC2815](https://github.com/matrix-org/matrix-spec-proposals/pull/2815) to allow room moderators to view redacted event content. Contributed by @tulir. ([\#12427](https://github.com/matrix-org/synapse/issues/12427))
    - Build Debian packages for Ubuntu 22.04 "Jammy Jellyfish". ([\#12543](https://github.com/matrix-org/synapse/issues/12543))
    
    Bugfixes
    --------
    
    - Prevent a sync request from removing a user's busy presence status. ([\#12213](https://github.com/matrix-org/synapse/issues/12213))
    - Fix bug with incremental sync missing events when rejoining/backfilling. Contributed by Nick @ Beeper. ([\#12319](https://github.com/matrix-org/synapse/issues/12319))
    - Fix a long-standing bug which incorrectly caused `GET /_matrix/client/v3/rooms/{roomId}/event/{eventId}` to return edited events rather than the original. ([\#12476](https://github.com/matrix-org/synapse/issues/12476))
    - Fix a bug introduced in Synapse 1.27.0 where the admin API for [deleting forward extremities](https://github.com/matrix-org/synapse/blob/erikj/fix_delete_event_response_count/docs/admin_api/rooms.md#deleting-forward-extremities) would always return a count of 1, no matter how many extremities were deleted. ([\#12496](https://github.com/matrix-org/synapse/issues/12496))
    - Fix a long-standing bug where the image thumbnails embedded into email notifications were broken. ([\#12510](https://github.com/matrix-org/synapse/issues/12510))
    - Fix a bug in the implementation of [MSC3202](https://github.com/matrix-org/matrix-spec-proposals/pull/3202) where Synapse would use the field name `device_unused_fallback_keys`, rather than `device_unused_fallback_key_types`. ([\#12520](https://github.com/matrix-org/synapse/issues/12520))
    - Fix a bug introduced in Synapse 0.99.3 which could cause Synapse to consume large amounts of RAM when back-paginating in a large room. ([\#12522](https://github.com/matrix-org/synapse/issues/12522))
    
    Improved Documentation
    ----------------------
    
    - Fix rendering of the documentation site when using the 'print' feature. ([\#12340](https://github.com/matrix-org/synapse/issues/12340))
    - Add a manual documenting config file options. ([\#12368](https://github.com/matrix-org/synapse/issues/12368), [\#12527](https://github.com/matrix-org/synapse/issues/12527))
    - Update documentation to reflect that both the `run_background_tasks_on` option and the options for moving stream writers off of the main process are no longer experimental. ([\#12451](https://github.com/matrix-org/synapse/issues/12451))
    - Update worker documentation and replace old `federation_reader` with `generic_worker`. ([\#12457](https://github.com/matrix-org/synapse/issues/12457))
    - Strongly recommend [Poetry](https://python-poetry.org/) for development. ([\#12475](https://github.com/matrix-org/synapse/issues/12475))
    - Add some example configurations for workers and update architectural diagram. ([\#12492](https://github.com/matrix-org/synapse/issues/12492))
    - Fix a broken link in `README.rst`. ([\#12495](https://github.com/matrix-org/synapse/issues/12495))
    - Add HAProxy delegation example with CORS headers to docs. ([\#12501](https://github.com/matrix-org/synapse/issues/12501))
    - Remove extraneous comma in User Admin API's device deletion section so that the example JSON is actually valid and works. Contributed by @olmari. ([\#12533](https://github.com/matrix-org/synapse/issues/12533))
    
    Deprecations and Removals
    -------------------------
    
    - The groups/communities feature in Synapse is now disabled by default. ([\#12344](https://github.com/matrix-org/synapse/issues/12344))
    - Remove unstable identifiers from [MSC3440](https://github.com/matrix-org/matrix-doc/pull/3440). ([\#12382](https://github.com/matrix-org/synapse/issues/12382))
    
    Internal Changes
    ----------------
    
    - Preparation for faster-room-join work: start a background process to resynchronise the room state after a room join. ([\#12394](https://github.com/matrix-org/synapse/issues/12394))
    - Preparation for faster-room-join work: Implement a tracking mechanism to allow functions to wait for full room state to arrive. ([\#12399](https://github.com/matrix-org/synapse/issues/12399))
    - Remove an unstable identifier from [MSC3083](https://github.com/matrix-org/matrix-doc/pull/3083). ([\#12395](https://github.com/matrix-org/synapse/issues/12395))
    - Run CI in the locked [Poetry](https://python-poetry.org/) environment, and remove corresponding `tox` jobs. ([\#12425](https://github.com/matrix-org/synapse/issues/12425), [\#12434](https://github.com/matrix-org/synapse/issues/12434), [\#12438](https://github.com/matrix-org/synapse/issues/12438), [\#12441](https://github.com/matrix-org/synapse/issues/12441), [\#12449](https://github.com/matrix-org/synapse/issues/12449), [\#12478](https://github.com/matrix-org/synapse/issues/12478), [\#12514](https://github.com/matrix-org/synapse/issues/12514), [\#12472](https://github.com/matrix-org/synapse/issues/12472))
    - Change Mutual Rooms' `unstable_features` flag to `uk.half-shot.msc2666.mutual_rooms` which matches the current iteration of [MSC2666](https://github.com/matrix-org/matrix-spec-proposals/pull/2666). ([\#12445](https://github.com/matrix-org/synapse/issues/12445))
    - Fix typo in the release script help string. ([\#12450](https://github.com/matrix-org/synapse/issues/12450))
    - Fix a minor typo in the Debian changelogs generated by the release script. ([\#12497](https://github.com/matrix-org/synapse/issues/12497))
    - Reintroduce the list of targets to the linter script, to avoid linting unwanted local-only directories during development. ([\#12455](https://github.com/matrix-org/synapse/issues/12455))
    - Limit length of `device_id` to less than 512 characters. ([\#12454](https://github.com/matrix-org/synapse/issues/12454))
    - Dockerfile-workers: reduce the amount we install in the image. ([\#12464](https://github.com/matrix-org/synapse/issues/12464))
    - Dockerfile-workers: give the master its own log config. ([\#12466](https://github.com/matrix-org/synapse/issues/12466))
    - complement-synapse-workers: factor out separate entry point script. ([\#12467](https://github.com/matrix-org/synapse/issues/12467))
    - Back out experimental implementation of [MSC2314](https://github.com/matrix-org/matrix-spec-proposals/pull/2314). ([\#12474](https://github.com/matrix-org/synapse/issues/12474))
    - Fix grammatical error in federation error response when the room version of a room is unknown. ([\#12483](https://github.com/matrix-org/synapse/issues/12483))
    - Remove unnecessary configuration overrides in tests. ([\#12511](https://github.com/matrix-org/synapse/issues/12511))
    - Refactor the relations code for clarity. ([\#12519](https://github.com/matrix-org/synapse/issues/12519))
    - Add type hints so `docker` and `stubs` directories pass `mypy --disallow-untyped-defs`. ([\#12528](https://github.com/matrix-org/synapse/issues/12528))
    - Update `delay_cancellation` to accept any awaitable, rather than just `Deferred`s. ([\#12468](https://github.com/matrix-org/synapse/issues/12468))
    - Handle cancellation in `EventsWorkerStore._get_events_from_cache_or_db`. ([\#12529](https://github.com/matrix-org/synapse/issues/12529))
  • v1.57.1
    f8f06fc7 · Clarify changelog entry ·
    Synapse 1.57.1 (2022-04-20)
    ===========================
    
    This is a patch release that only affects the Docker image. It is only of interest to administrators using [the LDAP module][LDAPModule] to authenticate their users.
    If you have already upgraded to Synapse 1.57.0 without problem, then you have no need to upgrade to this patch release.
    
    [LDAPModule]: https://github.com/matrix-org/matrix-synapse-ldap3
    
    Updates to the Docker image
    ---------------------------
    
    - Include version 0.2.0 of the Synapse LDAP Auth Provider module in the Docker image. This matches the version that was present in the Docker image for Synapse v1.56.0. ([\#12512](https://github.com/matrix-org/synapse/issues/12512))
    
  • v1.57.0
    Synapse 1.57.0 (2022-04-19)
    ===========================
    
    This version includes a [change](https://github.com/matrix-org/synapse/pull/12209) to the way transaction IDs are managed for application services. If your deployment uses a dedicated worker for application service traffic, **it must be stopped** when the database is upgraded (which normally happens when the main process is upgraded), to ensure the change is made safely without any risk of reusing transaction IDs.
    
    See the [upgrade notes](https://github.com/matrix-org/synapse/blob/v1.57.0rc1/docs/upgrade.md#upgrading-to-v1570) for more details.
    
    No significant changes since 1.57.0rc1.
    
    Synapse 1.57.0rc1 (2022-04-12)
    ==============================
    
    Features
    --------
    
    - Send device list changes to application services as specified by [MSC3202](https://github.com/matrix-org/matrix-spec-proposals/pull/3202), using unstable prefixes. The `msc3202_transaction_extensions` experimental homeserver config option must be enabled and `org.matrix.msc3202: true` must be present in the application service registration file for device list changes to be sent. The "left" field is currently always empty. ([\#11881](https://github.com/matrix-org/synapse/issues/11881))
    - Optimise fetching large quantities of missing room state over federation. ([\#12040](https://github.com/matrix-org/synapse/issues/12040))
    - Offload the `update_client_ip` background job from the main process to the background worker, when using Redis-based replication. ([\#12251](https://github.com/matrix-org/synapse/issues/12251))
    - Move `update_client_ip` background job from the main process to the background worker. ([\#12252](https://github.com/matrix-org/synapse/issues/12252))
    - Add a module callback to react to new 3PID (email address, phone number) associations. ([\#12302](https://github.com/matrix-org/synapse/issues/12302))
    - Add a configuration option to remove a specific set of rooms from sync responses. ([\#12310](https://github.com/matrix-org/synapse/issues/12310))
    - Add a module callback to react to account data changes. ([\#12327](https://github.com/matrix-org/synapse/issues/12327))
    - Allow setting user admin status using the module API. Contributed by Famedly. ([\#12341](https://github.com/matrix-org/synapse/issues/12341))
    - Reduce overhead of restarting synchrotrons. ([\#12367](https://github.com/matrix-org/synapse/issues/12367), [\#12372](https://github.com/matrix-org/synapse/issues/12372))
    - Update `/messages` to use historic pagination tokens if no `from` query parameter is given. ([\#12370](https://github.com/matrix-org/synapse/issues/12370))
    - Add a module API for reading and writing global account data. ([\#12391](https://github.com/matrix-org/synapse/issues/12391))
    - Support the stable `v1` endpoint for `/relations`, per [MSC2675](https://github.com/matrix-org/matrix-doc/pull/2675). ([\#12403](https://github.com/matrix-org/synapse/issues/12403))
    - Include bundled aggregations in search results
      ([MSC3666](https://github.com/matrix-org/matrix-spec-proposals/pull/3666)). ([\#12436](https://github.com/matrix-org/synapse/issues/12436))
    
    Bugfixes
    --------
    
    - Fix a long-standing bug where updates to the server notices user profile (display name/avatar URL) in the configuration would not be applied to pre-existing rooms. Contributed by Jorge Florian. ([\#12115](https://github.com/matrix-org/synapse/issues/12115))
    - Fix a long-standing bug where events from ignored users were still considered for bundled aggregations. ([\#12235](https://github.com/matrix-org/synapse/issues/12235), [\#12338](https://github.com/matrix-org/synapse/issues/12338))
    - Fix non-member state events not resolving for historical events when used in [MSC2716](https://github.com/matrix-org/matrix-spec-proposals/pull/2716) `/batch_send` `state_events_at_start`. ([\#12329](https://github.com/matrix-org/synapse/issues/12329))
    - Fix a long-standing bug affecting URL previews that would generate a 500 response instead of a 403 if the previewed URL includes a port that isn't allowed by the relevant blacklist. ([\#12333](https://github.com/matrix-org/synapse/issues/12333))
    - Default to `private` room visibility rather than `public` when a client does not specify one, according to spec. ([\#12350](https://github.com/matrix-org/synapse/issues/12350))
    - Fix a spec compliance issue where requests to the `/publicRooms` federation API would specify `limit` as a string. ([\#12364](https://github.com/matrix-org/synapse/issues/12364), [\#12410](https://github.com/matrix-org/synapse/issues/12410))
    - Fix a bug introduced in Synapse 1.49.0 which caused the `synapse_event_persisted_position` metric to have invalid values. ([\#12390](https://github.com/matrix-org/synapse/issues/12390))
    
    Updates to the Docker image
    ---------------------------
    
    - Bundle locked versions of dependencies into the Docker image. ([\#12385](https://github.com/matrix-org/synapse/issues/12385), [\#12439](https://github.com/matrix-org/synapse/issues/12439))
    - Fix up healthcheck generation for workers docker image. ([\#12405](https://github.com/matrix-org/synapse/issues/12405))
    
    Improved Documentation
    ----------------------
    
    - Clarify documentation for running SyTest against Synapse, including use of Postgres and worker mode. ([\#12271](https://github.com/matrix-org/synapse/issues/12271))
    - Document the behaviour of `LoggingTransaction.call_after` and `LoggingTransaction.call_on_exception` methods when transactions are retried. ([\#12315](https://github.com/matrix-org/synapse/issues/12315))
    - Update dead links in `check-newsfragment.sh` to point to the correct documentation URL. ([\#12331](https://github.com/matrix-org/synapse/issues/12331))
    - Upgrade the version of `mdbook` in CI to 0.4.17. ([\#12339](https://github.com/matrix-org/synapse/issues/12339))
    - Updates to the Room DAG concepts development document to clarify that we mark events as outliers because we don't have any state for them. ([\#12345](https://github.com/matrix-org/synapse/issues/12345))
    - Update the link to Redis pub/sub documentation in the workers documentation. ([\#12369](https://github.com/matrix-org/synapse/issues/12369))
    - Remove documentation for converting a legacy structured logging configuration to the new format. ([\#12392](https://github.com/matrix-org/synapse/issues/12392))
    
    Deprecations and Removals
    -------------------------
    
    - Remove the unused and unstable `/aggregations` endpoint which was removed from [MSC2675](https://github.com/matrix-org/matrix-doc/pull/2675). ([\#12293](https://github.com/matrix-org/synapse/issues/12293))
    
    Internal Changes
    ----------------
    
    - Remove lingering unstable references to MSC2403 (knocking). ([\#12165](https://github.com/matrix-org/synapse/issues/12165))
    - Avoid trying to calculate the state at outlier events. ([\#12191](https://github.com/matrix-org/synapse/issues/12191), [\#12316](https://github.com/matrix-org/synapse/issues/12316), [\#12330](https://github.com/matrix-org/synapse/issues/12330), [\#12332](https://github.com/matrix-org/synapse/issues/12332), [\#12409](https://github.com/matrix-org/synapse/issues/12409))
    - Omit sending "offline" presence updates to application services after they are initially configured. ([\#12193](https://github.com/matrix-org/synapse/issues/12193))
    - Switch to using a sequence to generate AS transaction IDs. Contributed by Nick @ Beeper. If running synapse with a dedicated appservice worker, this MUST be stopped before upgrading the main process and database. ([\#12209](https://github.com/matrix-org/synapse/issues/12209))
    - Add missing type hints for storage. ([\#12267](https://github.com/matrix-org/synapse/issues/12267))
    - Add missing type definitions for scripts in docker folder. Contributed by Jorge Florian. ([\#12280](https://github.com/matrix-org/synapse/issues/12280))
    - Move [MSC2654](https://github.com/matrix-org/matrix-doc/pull/2654) support behind an experimental configuration flag. ([\#12295](https://github.com/matrix-org/synapse/issues/12295))
    - Update docstrings to explain how to decipher live and historic pagination tokens. ([\#12317](https://github.com/matrix-org/synapse/issues/12317))
    - Add ground work for speeding up device list updates for users in large numbers of rooms. ([\#12321](https://github.com/matrix-org/synapse/issues/12321))
    - Fix typechecker problems exposed by signedjson 1.1.2. ([\#12326](https://github.com/matrix-org/synapse/issues/12326))
    - Remove the `tox` packaging job: it will be redundant once #11537 lands. ([\#12334](https://github.com/matrix-org/synapse/issues/12334))
    - Ignore `.envrc` for `direnv` users. ([\#12335](https://github.com/matrix-org/synapse/issues/12335))
    - Remove the (broadly unused, dev-only) dockerfile for pg tests. ([\#12336](https://github.com/matrix-org/synapse/issues/12336))
    - Remove redundant `get_success` calls in test code. ([\#12346](https://github.com/matrix-org/synapse/issues/12346))
    - Add type annotations for `tests/unittest.py`. ([\#12347](https://github.com/matrix-org/synapse/issues/12347))
    - Move single-use methods out of `TestCase`. ([\#12348](https://github.com/matrix-org/synapse/issues/12348))
    - Remove broken and unused development scripts. ([\#12349](https://github.com/matrix-org/synapse/issues/12349), [\#12351](https://github.com/matrix-org/synapse/issues/12351), [\#12355](https://github.com/matrix-org/synapse/issues/12355))
    - Convert `Linearizer` tests from `inlineCallbacks` to async. ([\#12353](https://github.com/matrix-org/synapse/issues/12353))
    - Update docstrings for `ReadWriteLock` tests. ([\#12354](https://github.com/matrix-org/synapse/issues/12354))
    - Refactor `Linearizer`, convert methods to async and use an async context manager. ([\#12357](https://github.com/matrix-org/synapse/issues/12357))
    - Fix a long-standing bug where `Linearizer`s could get stuck if a cancellation were to happen at the wrong time. ([\#12358](https://github.com/matrix-org/synapse/issues/12358))
    - Make `StreamToken.from_string` and `RoomStreamToken.parse` propagate cancellations instead of replacing them with `SynapseError`s. ([\#12366](https://github.com/matrix-org/synapse/issues/12366))
    - Add type hints to tests files. ([\#12371](https://github.com/matrix-org/synapse/issues/12371))
    - Allow specifying the Postgres database's port when running unit tests with Postgres. ([\#12376](https://github.com/matrix-org/synapse/issues/12376))
    - Remove temporary pin of signedjson<=1.1.1 that was added in Synapse 1.56.0. ([\#12379](https://github.com/matrix-org/synapse/issues/12379))
    - Add opentracing spans to calls to external cache. ([\#12380](https://github.com/matrix-org/synapse/issues/12380))
    - Lay groundwork for using `poetry` to manage Synapse's dependencies. ([\#12381](https://github.com/matrix-org/synapse/issues/12381), [\#12407](https://github.com/matrix-org/synapse/issues/12407), [\#12412](https://github.com/matrix-org/synapse/issues/12412), [\#12418](https://github.com/matrix-org/synapse/issues/12418))
    - Make missing `importlib_metadata` dependency explicit. ([\#12384](https://github.com/matrix-org/synapse/issues/12384), [\#12400](https://github.com/matrix-org/synapse/issues/12400))
    - Update type annotations for compatiblity with prometheus_client 0.14. ([\#12389](https://github.com/matrix-org/synapse/issues/12389))
    - Remove support for the unstable identifiers specified in [MSC3288](https://github.com/matrix-org/matrix-doc/pull/3288). ([\#12398](https://github.com/matrix-org/synapse/issues/12398))
    - Add missing type hints to configuration classes. ([\#12402](https://github.com/matrix-org/synapse/issues/12402))
    - Add files used to build the Docker image used for complement testing into the Synapse repository. ([\#12404](https://github.com/matrix-org/synapse/issues/12404))
    - Do not include groups in the sync response when disabled. ([\#12408](https://github.com/matrix-org/synapse/issues/12408))
    - Improve type hints related to HTTP query parameters. ([\#12415](https://github.com/matrix-org/synapse/issues/12415))
    - Stop maintaining a list of lint targets. ([\#12420](https://github.com/matrix-org/synapse/issues/12420))
    - Make `synapse._scripts` pass type checks. ([\#12421](https://github.com/matrix-org/synapse/issues/12421), [\#12422](https://github.com/matrix-org/synapse/issues/12422))
    - Add some type hints to datastore. ([\#12423](https://github.com/matrix-org/synapse/issues/12423))
    - Enable certificate checking during complement tests. ([\#12435](https://github.com/matrix-org/synapse/issues/12435))
    - Explicitly specify the `tls` extra for Twisted dependency. ([\#12444](https://github.com/matrix-org/synapse/issues/12444))
    
    
  • v1.57.0rc1
    e31d06f6 · Split changelogs by year ·
    Synapse 1.57.0rc1 (2022-04-12)
    ==============================
    
    This version includes a [change](https://github.com/matrix-org/synapse/pull/12209) to the way transaction IDs are managed for application services. If your deployment uses a dedicated worker for application service traffic, **it must be stopped** when the database is upgraded (which normally happens when the main process is upgraded), to ensure the change is made safely without any risk of reusing transaction IDs.
    
    See the [upgrade notes](https://github.com/matrix-org/synapse/blob/develop/docs/upgrade.md#upgrading-to-v1570) for more details.
    
    Features
    --------
    
    - Send device list changes to application services as specified by [MSC3202](https://github.com/matrix-org/matrix-spec-proposals/pull/3202), using unstable prefixes. The `msc3202_transaction_extensions` experimental homeserver config option must be enabled and `org.matrix.msc3202: true` must be present in the application service registration file for device list changes to be sent. The "left" field is currently always empty. ([\#11881](https://github.com/matrix-org/synapse/issues/11881))
    - Optimise fetching large quantities of missing room state over federation. ([\#12040](https://github.com/matrix-org/synapse/issues/12040))
    - Offload the `update_client_ip` background job from the main process to the background worker, when using Redis-based replication. ([\#12251](https://github.com/matrix-org/synapse/issues/12251))
    - Move `update_client_ip` background job from the main process to the background worker. ([\#12252](https://github.com/matrix-org/synapse/issues/12252))
    - Add a module callback to react to new 3PID (email address, phone number) associations. ([\#12302](https://github.com/matrix-org/synapse/issues/12302))
    - Add a configuration option to remove a specific set of rooms from sync responses. ([\#12310](https://github.com/matrix-org/synapse/issues/12310))
    - Add a module callback to react to account data changes. ([\#12327](https://github.com/matrix-org/synapse/issues/12327))
    - Allow setting user admin status using the module API. Contributed by Famedly. ([\#12341](https://github.com/matrix-org/synapse/issues/12341))
    - Reduce overhead of restarting synchrotrons. ([\#12367](https://github.com/matrix-org/synapse/issues/12367), [\#12372](https://github.com/matrix-org/synapse/issues/12372))
    - Update `/messages` to use historic pagination tokens if no `from` query parameter is given. ([\#12370](https://github.com/matrix-org/synapse/issues/12370))
    - Add a module API for reading and writing global account data. ([\#12391](https://github.com/matrix-org/synapse/issues/12391))
    - Support the stable `v1` endpoint for `/relations`, per [MSC2675](https://github.com/matrix-org/matrix-doc/pull/2675). ([\#12403](https://github.com/matrix-org/synapse/issues/12403))
    - Include bundled aggregations in search results
      ([MSC3666](https://github.com/matrix-org/matrix-spec-proposals/pull/3666)). ([\#12436](https://github.com/matrix-org/synapse/issues/12436))
    
    Bugfixes
    --------
    
    - Fix a long-standing bug that updating the server notices user profile (display name/avatar URL) in the configuration would not be applied to pre-existing rooms. Contributed by Jorge Florian. ([\#12115](https://github.com/matrix-org/synapse/issues/12115))
    - Fix a long-standing bug where events from ignored users were still considered for bundled aggregations. ([\#12235](https://github.com/matrix-org/synapse/issues/12235), [\#12338](https://github.com/matrix-org/synapse/issues/12338))
    - Fix non-member state events not resolving for historical events when used in [MSC2716](https://github.com/matrix-org/matrix-spec-proposals/pull/2716) `/batch_send` `state_events_at_start`. ([\#12329](https://github.com/matrix-org/synapse/issues/12329))
    - Fix a long-standing bug affecting URL previews that would generate a 500 response instead of a 403 if the previewed URL includes a port that isn't allowed by the relevant blacklist. ([\#12333](https://github.com/matrix-org/synapse/issues/12333))
    - Default to `private` room visibility rather than `public` when a client does not specify one, according to spec. ([\#12350](https://github.com/matrix-org/synapse/issues/12350))
    - Fix a spec compliance issue where requests to the `/publicRooms` federation API would specify `limit` as a string. ([\#12364](https://github.com/matrix-org/synapse/issues/12364), [\#12410](https://github.com/matrix-org/synapse/issues/12410))
    - Fix a bug introduced in Synapse 1.49.0 which caused the `synapse_event_persisted_position` metric to have invalid values. ([\#12390](https://github.com/matrix-org/synapse/issues/12390))
    
    Updates to the Docker image
    ---------------------------
    
    - Bundle locked versions of dependencies into the Docker image. ([\#12385](https://github.com/matrix-org/synapse/issues/12385))
    
    Improved Documentation
    ----------------------
    
    - Clarify documentation for running SyTest against Synapse, including use of Postgres and worker mode. ([\#12271](https://github.com/matrix-org/synapse/issues/12271))
    - Document the behaviour of `LoggingTransaction.call_after` and `LoggingTransaction.call_on_exception` methods when transactions are retried. ([\#12315](https://github.com/matrix-org/synapse/issues/12315))
    - Update dead links in `check-newsfragment.sh` to point to the correct documentation URL. ([\#12331](https://github.com/matrix-org/synapse/issues/12331))
    - Upgrade the version of `mdbook` in CI to 0.4.17. ([\#12339](https://github.com/matrix-org/synapse/issues/12339))
    - Updates to the Room DAG concepts development document to clarify that we mark events as outliers because we don't have any state for them. ([\#12345](https://github.com/matrix-org/synapse/issues/12345))
    - Update the link to Redis pub/sub documentation in the workers documentation.. ([\#12369](https://github.com/matrix-org/synapse/issues/12369))
    - Remove documentation for converting a legacy structured logging configuration to the new format. ([\#12392](https://github.com/matrix-org/synapse/issues/12392))
    
    Deprecations and Removals
    -------------------------
    
    - Remove the unused and unstable `/aggregations` endpoint which was removed from [MSC2675](https://github.com/matrix-org/matrix-doc/pull/2675). ([\#12293](https://github.com/matrix-org/synapse/issues/12293))
    
    Internal Changes
    ----------------
    
    - Remove lingering unstable references to MSC2403 (knocking). ([\#12165](https://github.com/matrix-org/synapse/issues/12165))
    - Avoid trying to calculate the state at outlier events. ([\#12191](https://github.com/matrix-org/synapse/issues/12191), [\#12316](https://github.com/matrix-org/synapse/issues/12316), [\#12330](https://github.com/matrix-org/synapse/issues/12330), [\#12332](https://github.com/matrix-org/synapse/issues/12332), [\#12409](https://github.com/matrix-org/synapse/issues/12409))
    - Omit sending "offline" presence updates to application services after they are initially configured. ([\#12193](https://github.com/matrix-org/synapse/issues/12193))
    - Switch to using a sequence to generate AS transaction IDs. Contributed by Nick Beeper. If running synapse with a dedicated appservice worker, this MUST be stopped before upgrading the main process and database. ([\#12209](https://github.com/matrix-org/synapse/issues/12209))
    - Add missing type hints for storage. ([\#12267](https://github.com/matrix-org/synapse/issues/12267))
    - Add missing type definitions for scripts in docker folder. Contributed by Jorge Florian. ([\#12280](https://github.com/matrix-org/synapse/issues/12280))
    - Move [MSC2654](https://github.com/matrix-org/matrix-doc/pull/2654) support behind an experimental configuration flag. ([\#12295](https://github.com/matrix-org/synapse/issues/12295))
    - Update docstrings to explain how to decipher live and historic pagination tokens. ([\#12317](https://github.com/matrix-org/synapse/issues/12317))
    - Add ground work for speeding up device list updates for users in large numbers of rooms. ([\#12321](https://github.com/matrix-org/synapse/issues/12321))
    - Fix typechecker problems exposed by signedjson 1.1.2. ([\#12326](https://github.com/matrix-org/synapse/issues/12326))
    - Remove the `tox` packaging job: it will be redundant once #11537 lands. ([\#12334](https://github.com/matrix-org/synapse/issues/12334))
    - Ignore `.envrc` for `direnv` users. ([\#12335](https://github.com/matrix-org/synapse/issues/12335))
    - Remove the (broadly unused, dev-only) dockerfile for pg tests. ([\#12336](https://github.com/matrix-org/synapse/issues/12336))
    - Remove redundant `get_success` calls in test code. ([\#12346](https://github.com/matrix-org/synapse/issues/12346))
    - Add type annotations for `tests/unittest.py`. ([\#12347](https://github.com/matrix-org/synapse/issues/12347))
    - Move single-use methods out of `TestCase`. ([\#12348](https://github.com/matrix-org/synapse/issues/12348))
    - Remove broken and unused development scripts. ([\#12349](https://github.com/matrix-org/synapse/issues/12349), [\#12351](https://github.com/matrix-org/synapse/issues/12351), [\#12355](https://github.com/matrix-org/synapse/issues/12355))
    - Convert `Linearizer` tests from `inlineCallbacks` to async. ([\#12353](https://github.com/matrix-org/synapse/issues/12353))
    - Update docstrings for `ReadWriteLock` tests. ([\#12354](https://github.com/matrix-org/synapse/issues/12354))
    - Refactor `Linearizer`, convert methods to async and use an async context manager. ([\#12357](https://github.com/matrix-org/synapse/issues/12357))
    - Fix a long-standing bug where `Linearizer`s could get stuck if a cancellation were to happen at the wrong time. ([\#12358](https://github.com/matrix-org/synapse/issues/12358))
    - Make `StreamToken.from_string` and `RoomStreamToken.parse` propagate cancellations instead of replacing them with `SynapseError`s. ([\#12366](https://github.com/matrix-org/synapse/issues/12366))
    - Add type hints to tests files. ([\#12371](https://github.com/matrix-org/synapse/issues/12371))
    - Allow specifying the Postgres database's port when running unit tests with Postgres. ([\#12376](https://github.com/matrix-org/synapse/issues/12376))
    - Remove temporary pin of signedjson<=1.1.1 that was added in Synapse 1.56.0. ([\#12379](https://github.com/matrix-org/synapse/issues/12379))
    - Add opentracing spans to calls to external cache. ([\#12380](https://github.com/matrix-org/synapse/issues/12380))
    - Lay groundwork for using `poetry` to manage Synapse's dependencies. ([\#12381](https://github.com/matrix-org/synapse/issues/12381))
    - Make missing `importlib_metadata` dependency explicit. ([\#12384](https://github.com/matrix-org/synapse/issues/12384), [\#12400](https://github.com/matrix-org/synapse/issues/12400))
    - Update type annotations for compatiblity with prometheus_client 0.14. ([\#12389](https://github.com/matrix-org/synapse/issues/12389))
    - Remove support for the unstable identifiers specified in [MSC3288](https://github.com/matrix-org/matrix-doc/pull/3288). ([\#12398](https://github.com/matrix-org/synapse/issues/12398))
    - Add missing type hints to configuration classes. ([\#12402](https://github.com/matrix-org/synapse/issues/12402))
    - Add files used to build the Docker image used for complement testing into the Synapse repository. ([\#12404](https://github.com/matrix-org/synapse/issues/12404))
    - Fix up healthcheck generation for workers docker image. ([\#12405](https://github.com/matrix-org/synapse/issues/12405))
    - Run the olddeps CI job using Poetry. ([\#12407](https://github.com/matrix-org/synapse/issues/12407))
    - Do not include groups in the sync response when disabled. ([\#12408](https://github.com/matrix-org/synapse/issues/12408))
    - Run the CI portdb script in the locked poetry environment. ([\#12412](https://github.com/matrix-org/synapse/issues/12412))
    - Improve type hints related to HTTP query parameters. ([\#12415](https://github.com/matrix-org/synapse/issues/12415))
    - Run the CI export-data script in the locked poetry environment. ([\#12418](https://github.com/matrix-org/synapse/issues/12418))
    - Stop maintaining a list of lint targets. ([\#12420](https://github.com/matrix-org/synapse/issues/12420))
    - Make `synapse._scripts` pass type checks. ([\#12421](https://github.com/matrix-org/synapse/issues/12421), [\#12422](https://github.com/matrix-org/synapse/issues/12422))
    - Add some type hints to datastore. ([\#12423](https://github.com/matrix-org/synapse/issues/12423))
    - Enable certificate checking during complement tests. ([\#12435](https://github.com/matrix-org/synapse/issues/12435))
    - Bundle locked versions of dependencies into the Docker image. ([\#12439](https://github.com/matrix-org/synapse/issues/12439))
    - Explicitly specify the `tls` extra for Twisted dependency. ([\#12444](https://github.com/matrix-org/synapse/issues/12444))