Tags

Synapse 1.52.0 (2022-02-08)
===========================

No significant changes since 1.52.0rc1.

During the making of this release, the developers of Twisted have released
[Twisted 22.1.0](https://github.com/twisted/twisted/releases/tag/twisted-22.1.0), which
fixes [a security issue](https://github.com/twisted/twisted/security/advisories/GHSA-92x2-jw7w-xvvx)
within Twisted. We do not believe Synapse to be vulnerable to any security problem caused
by this issue, though we advise server administrators to update their local version of
Twisted if they can.

Synapse 1.52.0rc1 (2022-02-01)
==============================

Features
--------

- Remove account data (including client config, push rules and ignored users) upon user deactivation. ([\#11621](https://github.com/matrix-org/synapse/issues/11621), [\#11788](https://github.com/matrix-org/synapse/issues/11788), [\#11789](https://github.com/matrix-org/synapse/issues/11789))
- Add an admin API to reset connection timeouts for remote server. ([\#11639](https://github.com/matrix-org/synapse/issues/11639))
- Add an admin API to get a list of rooms that federate with a given remote homeserver. ([\#11658](https://github.com/matrix-org/synapse/issues/11658))
- Add a config flag to inhibit `M_USER_IN_USE` during registration. ([\#11743](https://github.com/matrix-org/synapse/issues/11743))
- Add a module callback to set username at registration. ([\#11790](https://github.com/matrix-org/synapse/issues/11790))
- Allow configuring a maximum file size as well as a list of allowed content types for avatars. ([\#11846](https://github.com/matrix-org/synapse/issues/11846))

Bugfixes
--------

- Include the bundled aggregations in the `/sync` response, per [MSC2675](https://github.com/matrix-org/matrix-doc/pull/2675). ([\#11612](https://github.com/matrix-org/synapse/issues/11612))
- Fix a long-standing bug when previewing Reddit URLs which do not contain an image. ([\#11767](https://github.com/matrix-org/synapse/issues/11767))
- Fix a long-standing bug that media streams could cause long-lived connections when generating URL previews. ([\#11784](https://github.com/matrix-org/synapse/issues/11784))
- Include a `prev_content` field in state events sent to Application Services. Contributed by @totallynotvaishnav. ([\#11798](https://github.com/matrix-org/synapse/issues/11798))
- Fix a bug introduced in Synapse 0.33.3 causing requests to sometimes log strings such as `HTTPStatus.OK` instead of integer status codes. ([\#11827](https://github.com/matrix-org/synapse/issues/11827))

Improved Documentation
----------------------

- Update pypi installation docs to indicate that we now support Python 3.10. ([\#11820](https://github.com/matrix-org/synapse/issues/11820))
- Add missing steps to the contribution submission process in the documentation.  Contributed by @sequentialread. ([\#11821](https://github.com/matrix-org/synapse/issues/11821))
- Remove not needed old table of contents in documentation. ([\#11860](https://github.com/matrix-org/synapse/issues/11860))
- Consolidate the `access_token` information at the top of each relevant page in the Admin API documentation. ([\#11861](https://github.com/matrix-org/synapse/issues/11861))

Deprecations and Removals
-------------------------

- Drop support for Python 3.6, which is EOL. ([\#11683](https://github.com/matrix-org/synapse/issues/11683))
- Remove the `experimental_msc1849_support_enabled` flag as the features are now stable. ([\#11843](https://github.com/matrix-org/synapse/issues/11843))

Internal Changes
----------------

- Preparation for database schema simplifications: add `state_key` and `rejection_reason` columns to `events` table. ([\#11792](https://github.com/matrix-org/synapse/issues/11792))
- Add `FrozenEvent.get_state_key` and use it in a couple of places. ([\#11793](https://github.com/matrix-org/synapse/issues/11793))
- Preparation for database schema simplifications: stop reading from `event_reference_hashes`. ([\#11794](https://github.com/matrix-org/synapse/issues/11794))
- Drop unused table `public_room_list_stream`. ([\#11795](https://github.com/matrix-org/synapse/issues/11795))
- Preparation for reducing Postgres serialization errors: allow setting transaction isolation level. Contributed by Nick @ Beeper. ([\#11799](https://github.com/matrix-org/synapse/issues/11799), [\#11847](https://github.com/matrix-org/synapse/issues/11847))
- Docker: skip the initial amd64-only build and go straight to multiarch. ([\#11810](https://github.com/matrix-org/synapse/issues/11810))
- Run Complement on the Github Actions VM and not inside a Docker container. ([\#11811](https://github.com/matrix-org/synapse/issues/11811))
- Log module names at startup. ([\#11813](https://github.com/matrix-org/synapse/issues/11813))
- Improve type safety of bundled aggregations code. ([\#11815](https://github.com/matrix-org/synapse/issues/11815))
- Correct a type annotation in the event validation logic. ([\#11817](https://github.com/matrix-org/synapse/issues/11817), [\#11830](https://github.com/matrix-org/synapse/issues/11830))
- Minor updates and documentation for database schema delta files. ([\#11823](https://github.com/matrix-org/synapse/issues/11823))
- Workaround a type annotation problem in `prometheus_client` 0.13.0. ([\#11834](https://github.com/matrix-org/synapse/issues/11834))
- Minor performance improvement in room state lookup. ([\#11836](https://github.com/matrix-org/synapse/issues/11836))
- Fix some indentation inconsistencies in the sample config. ([\#11838](https://github.com/matrix-org/synapse/issues/11838))
- Add type hints to `tests/rest/admin`. ([\#11851](https://github.com/matrix-org/synapse/issues/11851))

Synapse 1.52.0rc1 (2022-02-01)
==============================

Features
--------

- Remove account data (including client config, push rules and ignored users) upon user deactivation. ([\#11621](https://github.com/matrix-org/synapse/issues/11621), [\#11788](https://github.com/matrix-org/synapse/issues/11788), [\#11789](https://github.com/matrix-org/synapse/issues/11789))
- Add an admin API to reset connection timeouts for remote server. ([\#11639](https://github.com/matrix-org/synapse/issues/11639))
- Add an admin API to get a list of rooms that federate with a given remote homeserver. ([\#11658](https://github.com/matrix-org/synapse/issues/11658))
- Add a config flag to inhibit M_USER_IN_USE during registration. ([\#11743](https://github.com/matrix-org/synapse/issues/11743))
- Add a module callback to set username at registration. ([\#11790](https://github.com/matrix-org/synapse/issues/11790))
- Allow configuring a maximum file size as well as a list of allowed content types for avatars. ([\#11846](https://github.com/matrix-org/synapse/issues/11846))

Bugfixes
--------

- Include the bundled aggregations in the `/sync` response, per [MSC2675](https://github.com/matrix-org/matrix-doc/pull/2675). ([\#11612](https://github.com/matrix-org/synapse/issues/11612))
- Fix a long-standing bug when previewing Reddit URLs which do not contain an image. ([\#11767](https://github.com/matrix-org/synapse/issues/11767))
- Fix a long-standing bug that media streams could cause long-lived connections when generating URL previews. ([\#11784](https://github.com/matrix-org/synapse/issues/11784))
- Include a `prev_content` field in state events sent to Application Services. Contributed by @totallynotvaishnav. ([\#11798](https://github.com/matrix-org/synapse/issues/11798))
- Fix a bug introduced in Synapse 0.33.3 causing requests to sometimes log strings such as `HTTPStatus.OK` instead of integer status codes. ([\#11827](https://github.com/matrix-org/synapse/issues/11827))

Improved Documentation
----------------------

- Update pypi installation docs to indicate that we now support Python 3.10. ([\#11820](https://github.com/matrix-org/synapse/issues/11820))
- Add missing steps to the contribution submission process in the documentation.  Contributed by @sequentialread. ([\#11821](https://github.com/matrix-org/synapse/issues/11821))
- Remove not needed old table of contents in documentation. ([\#11860](https://github.com/matrix-org/synapse/issues/11860))
- Consolidate the `access_token` information at the top of each relevant page in the Admin API documentation. ([\#11861](https://github.com/matrix-org/synapse/issues/11861))

Deprecations and Removals
-------------------------

- Drop support for Python 3.6, which is EOL. ([\#11683](https://github.com/matrix-org/synapse/issues/11683))
- Remove the `experimental_msc1849_support_enabled` flag as the features are now stable. ([\#11843](https://github.com/matrix-org/synapse/issues/11843))

Internal Changes
----------------

- Preparation for database schema simplifications: add `state_key` and `rejection_reason` columns to `events` table. ([\#11792](https://github.com/matrix-org/synapse/issues/11792))
- Add `FrozenEvent.get_state_key` and use it in a couple of places. ([\#11793](https://github.com/matrix-org/synapse/issues/11793))
- Preparation for database schema simplifications: stop reading from `event_reference_hashes`. ([\#11794](https://github.com/matrix-org/synapse/issues/11794))
- Drop unused table `public_room_list_stream`. ([\#11795](https://github.com/matrix-org/synapse/issues/11795))
- Preparation for reducing Postgres serialization errors: allow setting transaction isolation level. Contributed by Nick @ Beeper. ([\#11799](https://github.com/matrix-org/synapse/issues/11799), [\#11847](https://github.com/matrix-org/synapse/issues/11847))
- Docker: skip the initial amd64-only build and go straight to multiarch. ([\#11810](https://github.com/matrix-org/synapse/issues/11810))
- Run Complement on the Github Actions VM and not inside a Docker container. ([\#11811](https://github.com/matrix-org/synapse/issues/11811))
- Log module names at startup. ([\#11813](https://github.com/matrix-org/synapse/issues/11813))
- Improve type safety of bundled aggregations code. ([\#11815](https://github.com/matrix-org/synapse/issues/11815))
- Correct a type annotation in the event validation logic. ([\#11817](https://github.com/matrix-org/synapse/issues/11817), [\#11830](https://github.com/matrix-org/synapse/issues/11830))
- Minor updates and documentation for database schema delta files. ([\#11823](https://github.com/matrix-org/synapse/issues/11823))
- Workaround a type annotation problem in `prometheus_client` 0.13.0. ([\#11834](https://github.com/matrix-org/synapse/issues/11834))
- Minor performance improvement in room state lookup. ([\#11836](https://github.com/matrix-org/synapse/issues/11836))
- Fix some indentation inconsistencies in the sample config. ([\#11838](https://github.com/matrix-org/synapse/issues/11838))
- Add type hints to `tests/rest/admin`. ([\#11851](https://github.com/matrix-org/synapse/issues/11851))

Synapse 1.51.0 (2022-01-25)
===========================

No significant changes since 1.51.0rc2.

Synapse 1.51.0 deprecates `webclient` listeners and non-HTTP(S) `web_client_location`s. Support for these will be removed in Synapse 1.53.0, at which point Synapse will not be capable of directly serving a web client for Matrix.

Synapse 1.51.0rc2 (2022-01-24)
==============================

Bugfixes
--------

- Fix a bug introduced in Synapse 1.40.0 that caused Synapse to fail to process incoming federation traffic after handling a large amount of events in a v1 room. ([\#11806](https://github.com/matrix-org/synapse/issues/11806))

Synapse 1.51.0rc1 (2022-01-21)
==============================

Features
--------

- Add `track_puppeted_user_ips` config flag to record client IP addresses against puppeted users, and include the puppeted users in monthly active user counts. ([\#11561](https://github.com/matrix-org/synapse/issues/11561), [\#11749](https://github.com/matrix-org/synapse/issues/11749), [\#11757](https://github.com/matrix-org/synapse/issues/11757))
- Include whether the requesting user has participated in a thread when generating a summary for [MSC3440](https://github.com/matrix-org/matrix-doc/pull/3440). ([\#11577](https://github.com/matrix-org/synapse/issues/11577))
- Return an `M_FORBIDDEN` error code instead of `M_UNKNOWN` when a spam checker module prevents a user from creating a room. ([\#11672](https://github.com/matrix-org/synapse/issues/11672))
- Add a flag to the `synapse_review_recent_signups` script to ignore and filter appservice users. ([\#11675](https://github.com/matrix-org/synapse/issues/11675), [\#11770](https://github.com/matrix-org/synapse/issues/11770))

Bugfixes
--------

- Fix a long-standing issue which could cause Synapse to incorrectly accept data in the unsigned field of events
  received over federation. ([\#11530](https://github.com/matrix-org/synapse/issues/11530))
- Fix a long-standing bug where Synapse wouldn't cache a response indicating that a remote user has no devices. ([\#11587](https://github.com/matrix-org/synapse/issues/11587))
- Fix an error that occurs whilst trying to get the federation status of a destination server that was working normally. This admin API was newly introduced in Synapse v1.49.0. ([\#11593](https://github.com/matrix-org/synapse/issues/11593))
- Fix bundled aggregations not being included in the `/sync` response, per [MSC2675](https://github.com/matrix-org/matrix-doc/pull/2675). ([\#11612](https://github.com/matrix-org/synapse/issues/11612), [\#11659](https://github.com/matrix-org/synapse/issues/11659), [\#11791](https://github.com/matrix-org/synapse/issues/11791))
- Fix the `/_matrix/client/v1/room/{roomId}/hierarchy` endpoint returning incorrect fields which have been present since Synapse 1.49.0. ([\#11667](https://github.com/matrix-org/synapse/issues/11667))
- Fix preview of some GIF URLs (like tenor.com). Contributed by Philippe Daouadi. ([\#11669](https://github.com/matrix-org/synapse/issues/11669))
- Fix a bug where only the first 50 rooms from a space were returned from the `/hierarchy` API. This has existed since the introduction of the API in Synapse v1.41.0. ([\#11695](https://github.com/matrix-org/synapse/issues/11695))
- Fix a bug introduced in Synapse v1.18.0 where password reset and address validation emails would not be sent if their subject was configured to use the 'app' template variable. Contributed by @br4nnigan. ([\#11710](https://github.com/matrix-org/synapse/issues/11710), [\#11745](https://github.com/matrix-org/synapse/issues/11745))
- Make the 'List Rooms' Admin API sort stable. Contributed by Daniël Sonck. ([\#11737](https://github.com/matrix-org/synapse/issues/11737))
- Fix a long-standing bug where space hierarchy over federation would only work correctly some of the time. ([\#11775](https://github.com/matrix-org/synapse/issues/11775))
- Fix a bug introduced in Synapse v1.46.0 that prevented `on_logged_out` module callbacks from being correctly awaited by Synapse. ([\#11786](https://github.com/matrix-org/synapse/issues/11786))

Improved Documentation
----------------------

- Warn against using a Let's Encrypt certificate for TLS/DTLS TURN server client connections, and suggest using ZeroSSL certificate instead. This works around client-side connectivity errors caused by WebRTC libraries that reject Let's Encrypt certificates. Contibuted by @AndrewFerr. ([\#11686](https://github.com/matrix-org/synapse/issues/11686))
- Document the new `SYNAPSE_TEST_PERSIST_SQLITE_DB` environment variable in the contributing guide. ([\#11715](https://github.com/matrix-org/synapse/issues/11715))
- Document that the minimum supported PostgreSQL version is now 10. ([\#11725](https://github.com/matrix-org/synapse/issues/11725))
- Fix typo in demo docs: differnt. ([\#11735](https://github.com/matrix-org/synapse/issues/11735))
- Update room spec URL in config files. ([\#11739](https://github.com/matrix-org/synapse/issues/11739))
- Mention `python3-venv` and `libpq-dev` dependencies in the contribution guide. ([\#11740](https://github.com/matrix-org/synapse/issues/11740))
- Update documentation for configuring login with Facebook. ([\#11755](https://github.com/matrix-org/synapse/issues/11755))
- Update installation instructions to note that Python 3.6 is no longer supported. ([\#11781](https://github.com/matrix-org/synapse/issues/11781))

Deprecations and Removals
-------------------------

- Remove the unstable `/send_relation` endpoint. ([\#11682](https://github.com/matrix-org/synapse/issues/11682))
- Remove `python_twisted_reactor_pending_calls` Prometheus metric. ([\#11724](https://github.com/matrix-org/synapse/issues/11724))
- Remove the `password_hash` field from the response dictionaries of the [Users Admin API](https://matrix-org.github.io/synapse/latest/admin_api/user_admin_api.html). ([\#11576](https://github.com/matrix-org/synapse/issues/11576))
- **Deprecate support for `webclient` listeners and non-HTTP(S) `web_client_location` configuration. ([\#11774](https://github.com/matrix-org/synapse/issues/11774), [\#11783](https://github.com/matrix-org/synapse/issues/11783))**

Internal Changes
----------------

- Run `pyupgrade --py37-plus --keep-percent-format` on Synapse. ([\#11685](https://github.com/matrix-org/synapse/issues/11685))
- Use buildkit's cache feature to speed up docker builds. ([\#11691](https://github.com/matrix-org/synapse/issues/11691))
- Use `auto_attribs` and native type hints for attrs classes. ([\#11692](https://github.com/matrix-org/synapse/issues/11692), [\#11768](https://github.com/matrix-org/synapse/issues/11768))
- Remove debug logging for #4422, which has been closed since Synapse 0.99. ([\#11693](https://github.com/matrix-org/synapse/issues/11693))
- Remove fallback code for Python 2. ([\#11699](https://github.com/matrix-org/synapse/issues/11699))
- Add a test for [an edge case](https://github.com/matrix-org/synapse/pull/11532#discussion_r769104461) in the `/sync` logic. ([\#11701](https://github.com/matrix-org/synapse/issues/11701))
- Add the option to write SQLite test dbs to disk when running tests. ([\#11702](https://github.com/matrix-org/synapse/issues/11702))
- Improve Complement test output for Gitub Actions. ([\#11707](https://github.com/matrix-org/synapse/issues/11707))
- Fix docstring on `add_account_data_for_user`. ([\#11716](https://github.com/matrix-org/synapse/issues/11716))
- Complement environment variable name change and update `.gitignore`. ([\#11718](https://github.com/matrix-org/synapse/issues/11718))
- Simplify calculation of Prometheus metrics for garbage collection. ([\#11723](https://github.com/matrix-org/synapse/issues/11723))
- Improve accuracy of `python_twisted_reactor_tick_time` Prometheus metric. ([\#11724](https://github.com/matrix-org/synapse/issues/11724), [\#11771](https://github.com/matrix-org/synapse/issues/11771))
- Minor efficiency improvements when inserting many values into the database. ([\#11742](https://github.com/matrix-org/synapse/issues/11742))
- Invite PR authors to give themselves credit in the changelog. ([\#11744](https://github.com/matrix-org/synapse/issues/11744))
- Add optional debugging to investigate [issue 8631](https://github.com/matrix-org/synapse/issues/8631). ([\#11760](https://github.com/matrix-org/synapse/issues/11760))
- Remove `log_function` utility function and its uses. ([\#11761](https://github.com/matrix-org/synapse/issues/11761))
- Add a unit test that checks both `client` and `webclient` resources will function when simultaneously enabled. ([\#11765](https://github.com/matrix-org/synapse/issues/11765))
- Allow overriding complement commit using `COMPLEMENT_REF`. ([\#11766](https://github.com/matrix-org/synapse/issues/11766))
- Add some comments and type annotations for `_update_outliers_txn`. ([\#11776](https://github.com/matrix-org/synapse/issues/11776))

Synapse 1.50.2 (2022-01-24)
===========================

Bugfixes
--------

- Fix a bug introduced in Synapse 1.40.0 that caused Synapse to fail to process incoming federation traffic after handling a large amount of events in a v1 room. ([\#11806](https://github.com/matrix-org/synapse/issues/11806))

Synapse 1.51.0rc2 (2022-01-24)
==============================

Bugfixes
--------

- Fix a bug introduced in Synapse 1.40.0 that caused Synapse to fail to process incoming federation traffic after handling a large amount of events in a v1 room. ([\#11806](https://github.com/matrix-org/synapse/issues/11806))

Synapse 1.51.0rc1 (2022-01-21)
==============================

Features
--------

- Add `track_puppeted_user_ips` config flag to record client IP addresses against puppeted users, and include the puppeted users in monthly active user counts. ([\#11561](https://github.com/matrix-org/synapse/issues/11561), [\#11749](https://github.com/matrix-org/synapse/issues/11749), [\#11757](https://github.com/matrix-org/synapse/issues/11757))
- Include whether the requesting user has participated in a thread when generating a summary for [MSC3440](https://github.com/matrix-org/matrix-doc/pull/3440). ([\#11577](https://github.com/matrix-org/synapse/issues/11577))
- Return an `M_FORBIDDEN` error code instead of `M_UNKNOWN` when a spam checker module prevents a user from creating a room. ([\#11672](https://github.com/matrix-org/synapse/issues/11672))
- Add a flag to the `synapse_review_recent_signups` script to ignore and filter appservice users. ([\#11675](https://github.com/matrix-org/synapse/issues/11675), [\#11770](https://github.com/matrix-org/synapse/issues/11770))

Bugfixes
--------

- Fix a long-standing issue which could cause Synapse to incorrectly accept data in the unsigned field of events
  received over federation. ([\#11530](https://github.com/matrix-org/synapse/issues/11530))
- Fix a long-standing bug where Synapse wouldn't cache a response indicating that a remote user has no devices. ([\#11587](https://github.com/matrix-org/synapse/issues/11587))
- Fix an error that occurs whilst trying to get the federation status of a destination server that was working normally. This admin API was newly introduced in Synapse v1.49.0. ([\#11593](https://github.com/matrix-org/synapse/issues/11593))
- Fix bundled aggregations not being included in the `/sync` response, per [MSC2675](https://github.com/matrix-org/matrix-doc/pull/2675). ([\#11612](https://github.com/matrix-org/synapse/issues/11612), [\#11659](https://github.com/matrix-org/synapse/issues/11659), [\#11791](https://github.com/matrix-org/synapse/issues/11791))
- Fix the `/_matrix/client/v1/room/{roomId}/hierarchy` endpoint returning incorrect fields which have been present since Synapse 1.49.0. ([\#11667](https://github.com/matrix-org/synapse/issues/11667))
- Fix preview of some GIF URLs (like tenor.com). Contributed by Philippe Daouadi. ([\#11669](https://github.com/matrix-org/synapse/issues/11669))
- Fix a bug where only the first 50 rooms from a space were returned from the `/hierarchy` API. This has existed since the introduction of the API in Synapse v1.41.0. ([\#11695](https://github.com/matrix-org/synapse/issues/11695))
- Fix a bug introduced in Synapse v1.18.0 where password reset and address validation emails would not be sent if their subject was configured to use the 'app' template variable. Contributed by @br4nnigan. ([\#11710](https://github.com/matrix-org/synapse/issues/11710), [\#11745](https://github.com/matrix-org/synapse/issues/11745))
- Make the 'List Rooms' Admin API sort stable. Contributed by Daniël Sonck. ([\#11737](https://github.com/matrix-org/synapse/issues/11737))
- Fix a long-standing bug where space hierarchy over federation would only work correctly some of the time. ([\#11775](https://github.com/matrix-org/synapse/issues/11775))
- Fix a bug introduced in Synapse v1.46.0 that prevented `on_logged_out` module callbacks from being correctly awaited by Synapse. ([\#11786](https://github.com/matrix-org/synapse/issues/11786))

Improved Documentation
----------------------

- Warn against using a Let's Encrypt certificate for TLS/DTLS TURN server client connections, and suggest using ZeroSSL certificate instead. This works around client-side connectivity errors caused by WebRTC libraries that reject Let's Encrypt certificates. Contibuted by @AndrewFerr. ([\#11686](https://github.com/matrix-org/synapse/issues/11686))
- Document the new `SYNAPSE_TEST_PERSIST_SQLITE_DB` environment variable in the contributing guide. ([\#11715](https://github.com/matrix-org/synapse/issues/11715))
- Document that the minimum supported PostgreSQL version is now 10. ([\#11725](https://github.com/matrix-org/synapse/issues/11725))
- Fix typo in demo docs: differnt. ([\#11735](https://github.com/matrix-org/synapse/issues/11735))
- Update room spec URL in config files. ([\#11739](https://github.com/matrix-org/synapse/issues/11739))
- Mention `python3-venv` and `libpq-dev` dependencies in the contribution guide. ([\#11740](https://github.com/matrix-org/synapse/issues/11740))
- Update documentation for configuring login with Facebook. ([\#11755](https://github.com/matrix-org/synapse/issues/11755))
- Update installation instructions to note that Python 3.6 is no longer supported. ([\#11781](https://github.com/matrix-org/synapse/issues/11781))

Deprecations and Removals
-------------------------

- Remove the unstable `/send_relation` endpoint. ([\#11682](https://github.com/matrix-org/synapse/issues/11682))
- Remove `python_twisted_reactor_pending_calls` Prometheus metric. ([\#11724](https://github.com/matrix-org/synapse/issues/11724))
- Remove the `password_hash` field from the response dictionaries of the [Users Admin API](https://matrix-org.github.io/synapse/latest/admin_api/user_admin_api.html). ([\#11576](https://github.com/matrix-org/synapse/issues/11576))
- Deprecate support for `webclient` listeners and non-HTTP(S) `web_client_location` configuration. ([\#11774](https://github.com/matrix-org/synapse/issues/11774), [\#11783](https://github.com/matrix-org/synapse/issues/11783))

Internal Changes
----------------

- Run `pyupgrade --py37-plus --keep-percent-format` on Synapse. ([\#11685](https://github.com/matrix-org/synapse/issues/11685))
- Use buildkit's cache feature to speed up docker builds. ([\#11691](https://github.com/matrix-org/synapse/issues/11691))
- Use `auto_attribs` and native type hints for attrs classes. ([\#11692](https://github.com/matrix-org/synapse/issues/11692), [\#11768](https://github.com/matrix-org/synapse/issues/11768))
- Remove debug logging for #4422, which has been closed since Synapse 0.99. ([\#11693](https://github.com/matrix-org/synapse/issues/11693))
- Remove fallback code for Python 2. ([\#11699](https://github.com/matrix-org/synapse/issues/11699))
- Add a test for [an edge case](https://github.com/matrix-org/synapse/pull/11532#discussion_r769104461) in the `/sync` logic. ([\#11701](https://github.com/matrix-org/synapse/issues/11701))
- Add the option to write SQLite test dbs to disk when running tests. ([\#11702](https://github.com/matrix-org/synapse/issues/11702))
- Improve Complement test output for Gitub Actions. ([\#11707](https://github.com/matrix-org/synapse/issues/11707))
- Fix docstring on `add_account_data_for_user`. ([\#11716](https://github.com/matrix-org/synapse/issues/11716))
- Complement environment variable name change and update `.gitignore`. ([\#11718](https://github.com/matrix-org/synapse/issues/11718))
- Simplify calculation of Prometheus metrics for garbage collection. ([\#11723](https://github.com/matrix-org/synapse/issues/11723))
- Improve accuracy of `python_twisted_reactor_tick_time` Prometheus metric. ([\#11724](https://github.com/matrix-org/synapse/issues/11724), [\#11771](https://github.com/matrix-org/synapse/issues/11771))
- Minor efficiency improvements when inserting many values into the database. ([\#11742](https://github.com/matrix-org/synapse/issues/11742))
- Invite PR authors to give themselves credit in the changelog. ([\#11744](https://github.com/matrix-org/synapse/issues/11744))
- Add optional debugging to investigate [issue 8631](https://github.com/matrix-org/synapse/issues/8631). ([\#11760](https://github.com/matrix-org/synapse/issues/11760))
- Remove `log_function` utility function and its uses. ([\#11761](https://github.com/matrix-org/synapse/issues/11761))
- Add a unit test that checks both `client` and `webclient` resources will function when simultaneously enabled. ([\#11765](https://github.com/matrix-org/synapse/issues/11765))
- Allow overriding complement commit using `COMPLEMENT_REF`. ([\#11766](https://github.com/matrix-org/synapse/issues/11766))
- Add some comments and type annotations for `_update_outliers_txn`. ([\#11776](https://github.com/matrix-org/synapse/issues/11776))

Synapse 1.50.1 (2022-01-18)
===========================

This release fixes a bug in Synapse 1.50.0 that could prevent clients from being able to connect to Synapse if the `webclient` resource was enabled. Further details are available in [this issue](https://github.com/matrix-org/synapse/issues/11763).

Bugfixes
--------

- Fix a bug introduced in Synapse 1.50.0rc1 that could cause Matrix clients to be unable to connect to Synapse instances with the `webclient` resource enabled. ([\#11764](https://github.com/matrix-org/synapse/issues/11764))

Synapse 1.50.0 (2022-01-18)
===========================

Please note that we now only support Python 3.7+ and PostgreSQL 10+ (if applicable), because Python 3.6 and PostgreSQL 9.6 have reached end-of-life.

No significant changes since 1.50.0rc2.

Synapse 1.50.0rc2 (2022-01-14)
==============================

This release candidate fixes a federation-breaking regression introduced in Synapse 1.50.0rc1.

Bugfixes
--------

- Fix a bug introduced in Synapse v1.0.0 whereby some device list updates would not be sent to remote homeservers if there were too many to send at once. ([\#11729](https://github.com/matrix-org/synapse/issues/11729))
- Fix a bug introduced in Synapse v1.50.0rc1 whereby outbound federation could fail because too many EDUs were produced for device updates. ([\#11730](https://github.com/matrix-org/synapse/issues/11730))

Improved Documentation
----------------------

- Document that now the minimum supported PostgreSQL version is 10. ([\#11725](https://github.com/matrix-org/synapse/issues/11725))

Internal Changes
----------------

- Fix a typechecker problem related to our (ab)use of `nacl.signing.SigningKey`s. ([\#11714](https://github.com/matrix-org/synapse/issues/11714))

Synapse 1.50.0rc1 (2022-01-05)
==============================

Features
--------

- Allow guests to send state events per [MSC3419](https://github.com/matrix-org/matrix-doc/pull/3419). ([\#11378](https://github.com/matrix-org/synapse/issues/11378))
- Add experimental support for part of [MSC3202](https://github.com/matrix-org/matrix-doc/pull/3202): allowing application services to masquerade as specific devices. ([\#11538](https://github.com/matrix-org/synapse/issues/11538))
- Add admin API to get users' account data. ([\#11664](https://github.com/matrix-org/synapse/issues/11664))
- Include the room topic in the stripped state included with invites and knocking. ([\#11666](https://github.com/matrix-org/synapse/issues/11666))
- Send and handle cross-signing messages using the stable prefix. ([\#10520](https://github.com/matrix-org/synapse/issues/10520))
- Support unprefixed versions of fallback key property names. ([\#11541](https://github.com/matrix-org/synapse/issues/11541))

Bugfixes
--------

- Fix a long-standing bug where relations from other rooms could be included in the bundled aggregations of an event. ([\#11516](https://github.com/matrix-org/synapse/issues/11516))
- Fix a long-standing bug which could cause `AssertionError`s to be written to the log when Synapse was restarted after purging events from the database. ([\#11536](https://github.com/matrix-org/synapse/issues/11536), [\#11642](https://github.com/matrix-org/synapse/issues/11642))
- Fix a bug introduced in Synapse 1.17.0 where a pusher created for an email with capital letters would fail to be created. ([\#11547](https://github.com/matrix-org/synapse/issues/11547))
- Fix a long-standing bug where responses included bundled aggregations when they should not, per [MSC2675](https://github.com/matrix-org/matrix-doc/pull/2675). ([\#11592](https://github.com/matrix-org/synapse/issues/11592), [\#11623](https://github.com/matrix-org/synapse/issues/11623))
- Fix a long-standing bug that some unknown endpoints would return HTML error pages instead of JSON `M_UNRECOGNIZED` errors. ([\#11602](https://github.com/matrix-org/synapse/issues/11602))
- Fix a bug introduced in Synapse 1.19.3 which could sometimes cause `AssertionError`s when backfilling rooms over federation. ([\#11632](https://github.com/matrix-org/synapse/issues/11632))

Improved Documentation
----------------------

- Update Synapse install command for FreeBSD as the package is now prefixed with `py38`. Contributed by @itchychips. ([\#11267](https://github.com/matrix-org/synapse/issues/11267))
- Document the usage of refresh tokens. ([\#11427](https://github.com/matrix-org/synapse/issues/11427))
- Add details for how to configure a TURN server when behind a NAT. Contibuted by @AndrewFerr. ([\#11553](https://github.com/matrix-org/synapse/issues/11553))
- Add references for using Postgres to the Docker documentation. ([\#11640](https://github.com/matrix-org/synapse/issues/11640))
- Fix the documentation link in newly-generated configuration files. ([\#11678](https://github.com/matrix-org/synapse/issues/11678))
- Correct the documentation for `nginx` to use a case-sensitive url pattern. Fixes an error introduced in v1.21.0. ([\#11680](https://github.com/matrix-org/synapse/issues/11680))
- Clarify SSO mapping provider documentation by writing `def` or `async def` before the names of methods, as appropriate. ([\#11681](https://github.com/matrix-org/synapse/issues/11681))

Deprecations and Removals
-------------------------

- Replace `mock` package by its standard library version. ([\#11588](https://github.com/matrix-org/synapse/issues/11588))
- Drop support for Python 3.6 and Ubuntu 18.04. ([\#11633](https://github.com/matrix-org/synapse/issues/11633))

Internal Changes
----------------

- Allow specific, experimental events to be created without `prev_events`. Used by [MSC2716](https://github.com/matrix-org/matrix-doc/pull/2716). ([\#11243](https://github.com/matrix-org/synapse/issues/11243))
- A test helper (`wait_for_background_updates`) no longer depends on classes defining a `store` property. ([\#11331](https://github.com/matrix-org/synapse/issues/11331))
- Add type hints to `synapse.appservice`. ([\#11360](https://github.com/matrix-org/synapse/issues/11360))
- Add missing type hints to `synapse.config` module. ([\#11480](https://github.com/matrix-org/synapse/issues/11480))
- Add test to ensure we share the same `state_group` across the whole historical batch when using the [MSC2716](https://github.com/matrix-org/matrix-doc/pull/2716) `/batch_send` endpoint. ([\#11487](https://github.com/matrix-org/synapse/issues/11487))
- Refactor `tests.util.setup_test_homeserver` and `tests.server.setup_test_homeserver`. ([\#11503](https://github.com/matrix-org/synapse/issues/11503))
- Move `glob_to_regex` and `re_word_boundary` to `matrix-python-common`. ([\#11505](https://github.com/matrix-org/synapse/issues/11505), [\#11687](https://github.com/matrix-org/synapse/issues/11687))
- Use `HTTPStatus` constants in place of literals in `tests.rest.client.test_auth`. ([\#11520](https://github.com/matrix-org/synapse/issues/11520))
- Add a receipt types constant for `m.read`. ([\#11531](https://github.com/matrix-org/synapse/issues/11531))
- Clean up `synapse.rest.admin`. ([\#11535](https://github.com/matrix-org/synapse/issues/11535))
- Add missing `errcode` to `parse_string` and `parse_boolean`. ([\#11542](https://github.com/matrix-org/synapse/issues/11542))
- Use `HTTPStatus` constants in place of literals in `synapse.http`. ([\#11543](https://github.com/matrix-org/synapse/issues/11543))
- Add missing type hints to storage classes. ([\#11546](https://github.com/matrix-org/synapse/issues/11546), [\#11549](https://github.com/matrix-org/synapse/issues/11549), [\#11551](https://github.com/matrix-org/synapse/issues/11551), [\#11555](https://github.com/matrix-org/synapse/issues/11555), [\#11575](https://github.com/matrix-org/synapse/issues/11575), [\#11589](https://github.com/matrix-org/synapse/issues/11589), [\#11594](https://github.com/matrix-org/synapse/issues/11594), [\#11652](https://github.com/matrix-org/synapse/issues/11652), [\#11653](https://github.com/matrix-org/synapse/issues/11653), [\#11654](https://github.com/matrix-org/synapse/issues/11654), [\#11657](https://github.com/matrix-org/synapse/issues/11657))
- Fix an inaccurate and misleading comment in the `/sync` code. ([\#11550](https://github.com/matrix-org/synapse/issues/11550))
- Add missing type hints to `synapse.logging.context`. ([\#11556](https://github.com/matrix-org/synapse/issues/11556))
- Stop populating unused database column `state_events.prev_state`. ([\#11558](https://github.com/matrix-org/synapse/issues/11558))
- Minor efficiency improvements in event persistence. ([\#11560](https://github.com/matrix-org/synapse/issues/11560))
- Add some safety checks that storage functions are used correctly. ([\#11564](https://github.com/matrix-org/synapse/issues/11564), [\#11580](https://github.com/matrix-org/synapse/issues/11580))
- Make `get_device` return `None` if the device doesn't exist rather than raising an exception. ([\#11565](https://github.com/matrix-org/synapse/issues/11565))
- Split the HTML parsing code from the URL preview resource code. ([\#11566](https://github.com/matrix-org/synapse/issues/11566))
- Remove redundant `COALESCE()`s around `COUNT()`s in database queries. ([\#11570](https://github.com/matrix-org/synapse/issues/11570))
- Add missing type hints to `synapse.http`. ([\#11571](https://github.com/matrix-org/synapse/issues/11571))
- Add [MSC2716](https://github.com/matrix-org/matrix-doc/pull/2716) and [MSC3030](https://github.com/matrix-org/matrix-doc/pull/3030) to `/versions` -> `unstable_features` to detect server support. ([\#11582](https://github.com/matrix-org/synapse/issues/11582))
- Add type hints to `synapse/tests/rest/admin`. ([\#11590](https://github.com/matrix-org/synapse/issues/11590))
- Drop end-of-life Python 3.6 and Postgres 9.6 from CI. ([\#11595](https://github.com/matrix-org/synapse/issues/11595))
- Update black version and run it on all the files. ([\#11596](https://github.com/matrix-org/synapse/issues/11596))
- Add opentracing type stubs and fix associated mypy errors. ([\#11603](https://github.com/matrix-org/synapse/issues/11603), [\#11622](https://github.com/matrix-org/synapse/issues/11622))
- Improve OpenTracing support for requests which use a `ResponseCache`. ([\#11607](https://github.com/matrix-org/synapse/issues/11607))
- Improve OpenTracing support for incoming HTTP requests. ([\#11618](https://github.com/matrix-org/synapse/issues/11618))
- A number of improvements to opentracing support. ([\#11619](https://github.com/matrix-org/synapse/issues/11619))
- Refactor the way that the `outlier` flag is set on events received over federation. ([\#11634](https://github.com/matrix-org/synapse/issues/11634))
- Improve the error messages from  `get_create_event_for_room`. ([\#11638](https://github.com/matrix-org/synapse/issues/11638))
- Remove redundant `get_current_events_token` method. ([\#11643](https://github.com/matrix-org/synapse/issues/11643))
- Convert `namedtuples` to `attrs`. ([\#11665](https://github.com/matrix-org/synapse/issues/11665), [\#11574](https://github.com/matrix-org/synapse/issues/11574))
- Update the `/capabilities` response to include whether support for [MSC3440](https://github.com/matrix-org/matrix-doc/pull/3440) is available. ([\#11690](https://github.com/matrix-org/synapse/issues/11690))
- Send the `Accept` header in HTTP requests made using `SimpleHttpClient.get_json`. ([\#11677](https://github.com/matrix-org/synapse/issues/11677))
- Work around Mjolnir compatibility issue by adding an import for `glob_to_regex` in `synapse.util`, where it moved from. ([\#11696](https://github.com/matrix-org/synapse/issues/11696))

Synapse 1.50.0rc2 (2022-01-14)
==============================

This release candidate fixes a federation-breaking regression introduced in Synapse 1.50.0rc1.

Please note that we now only support Python 3.7+ and PostgreSQL 10+ (if applicable), because Python 3.6 and PostgreSQL 9.6 have reached end-of-life.

Bugfixes
--------

- Fix a bug introduced in Synapse v1.0.0 whereby some device list updates would not be sent to remote homeservers if there were too many to send at once. ([\#11729](https://github.com/matrix-org/synapse/issues/11729))
- Fix a bug introduced in Synapse v1.50.0rc1 whereby outbound federation could fail because too many EDUs were produced for device updates. ([\#11730](https://github.com/matrix-org/synapse/issues/11730))

Improved Documentation
----------------------

- Document that now the minimum supported PostgreSQL version is 10. ([\#11725](https://github.com/matrix-org/synapse/issues/11725))

Internal Changes
----------------

- Fix a typechecker problem related to our (ab)use of `nacl.signing.SigningKey`s. ([\#11714](https://github.com/matrix-org/synapse/issues/11714))

Synapse 1.50.0rc1 (2022-01-05)
==============================

Please note that we now only support Python 3.7+ and PostgreSQL 10+ (if applicable), because Python 3.6 and PostgreSQL 9.6 have reached end-of-life.

Features
--------

- Allow guests to send state events per [MSC3419](https://github.com/matrix-org/matrix-doc/pull/3419). ([\#11378](https://github.com/matrix-org/synapse/issues/11378))
- Add experimental support for part of [MSC3202](https://github.com/matrix-org/matrix-doc/pull/3202): allowing application services to masquerade as specific devices. ([\#11538](https://github.com/matrix-org/synapse/issues/11538))
- Add admin API to get users' account data. ([\#11664](https://github.com/matrix-org/synapse/issues/11664))
- Include the room topic in the stripped state included with invites and knocking. ([\#11666](https://github.com/matrix-org/synapse/issues/11666))
- Send and handle cross-signing messages using the stable prefix. ([\#10520](https://github.com/matrix-org/synapse/issues/10520))
- Support unprefixed versions of fallback key property names. ([\#11541](https://github.com/matrix-org/synapse/issues/11541))

Bugfixes
--------

- Fix a long-standing bug where relations from other rooms could be included in the bundled aggregations of an event. ([\#11516](https://github.com/matrix-org/synapse/issues/11516))
- Fix a long-standing bug which could cause `AssertionError`s to be written to the log when Synapse was restarted after purging events from the database. ([\#11536](https://github.com/matrix-org/synapse/issues/11536), [\#11642](https://github.com/matrix-org/synapse/issues/11642))
- Fix a bug introduced in Synapse 1.17.0 where a pusher created for an email with capital letters would fail to be created. ([\#11547](https://github.com/matrix-org/synapse/issues/11547))
- Fix a long-standing bug where responses included bundled aggregations when they should not, per [MSC2675](https://github.com/matrix-org/matrix-doc/pull/2675). ([\#11592](https://github.com/matrix-org/synapse/issues/11592), [\#11623](https://github.com/matrix-org/synapse/issues/11623))
- Fix a long-standing bug that some unknown endpoints would return HTML error pages instead of JSON `M_UNRECOGNIZED` errors. ([\#11602](https://github.com/matrix-org/synapse/issues/11602))
- Fix a bug introduced in Synapse 1.19.3 which could sometimes cause `AssertionError`s when backfilling rooms over federation. ([\#11632](https://github.com/matrix-org/synapse/issues/11632))

Improved Documentation
----------------------

- Update Synapse install command for FreeBSD as the package is now prefixed with `py38`. Contributed by @itchychips. ([\#11267](https://github.com/matrix-org/synapse/issues/11267))
- Document the usage of refresh tokens. ([\#11427](https://github.com/matrix-org/synapse/issues/11427))
- Add details for how to configure a TURN server when behind a NAT. Contibuted by @AndrewFerr. ([\#11553](https://github.com/matrix-org/synapse/issues/11553))
- Add references for using Postgres to the Docker documentation. ([\#11640](https://github.com/matrix-org/synapse/issues/11640))
- Fix the documentation link in newly-generated configuration files. ([\#11678](https://github.com/matrix-org/synapse/issues/11678))
- Correct the documentation for `nginx` to use a case-sensitive url pattern. Fixes an error introduced in v1.21.0. ([\#11680](https://github.com/matrix-org/synapse/issues/11680))
- Clarify SSO mapping provider documentation by writing `def` or `async def` before the names of methods, as appropriate. ([\#11681](https://github.com/matrix-org/synapse/issues/11681))

Deprecations and Removals
-------------------------

- Replace `mock` package by its standard library version. ([\#11588](https://github.com/matrix-org/synapse/issues/11588))

Internal Changes
----------------

- Allow specific, experimental events to be created without `prev_events`. Used by [MSC2716](https://github.com/matrix-org/matrix-doc/pull/2716). ([\#11243](https://github.com/matrix-org/synapse/issues/11243))
- A test helper (`wait_for_background_updates`) no longer depends on classes defining a `store` property. ([\#11331](https://github.com/matrix-org/synapse/issues/11331))
- Add type hints to `synapse.appservice`. ([\#11360](https://github.com/matrix-org/synapse/issues/11360))
- Add missing type hints to `synapse.config` module. ([\#11480](https://github.com/matrix-org/synapse/issues/11480))
- Add test to ensure we share the same `state_group` across the whole historical batch when using the [MSC2716](https://github.com/matrix-org/matrix-doc/pull/2716) `/batch_send` endpoint. ([\#11487](https://github.com/matrix-org/synapse/issues/11487))
- Refactor `tests.util.setup_test_homeserver` and `tests.server.setup_test_homeserver`. ([\#11503](https://github.com/matrix-org/synapse/issues/11503))
- Move `glob_to_regex` and `re_word_boundary` to `matrix-python-common`. ([\#11505](https://github.com/matrix-org/synapse/issues/11505), [\#11687](https://github.com/matrix-org/synapse/issues/11687))
- Use `HTTPStatus` constants in place of literals in `tests.rest.client.test_auth`. ([\#11520](https://github.com/matrix-org/synapse/issues/11520))
- Add a receipt types constant for `m.read`. ([\#11531](https://github.com/matrix-org/synapse/issues/11531))
- Clean up `synapse.rest.admin`. ([\#11535](https://github.com/matrix-org/synapse/issues/11535))
- Add missing `errcode` to `parse_string` and `parse_boolean`. ([\#11542](https://github.com/matrix-org/synapse/issues/11542))
- Use `HTTPStatus` constants in place of literals in `synapse.http`. ([\#11543](https://github.com/matrix-org/synapse/issues/11543))
- Add missing type hints to storage classes. ([\#11546](https://github.com/matrix-org/synapse/issues/11546), [\#11549](https://github.com/matrix-org/synapse/issues/11549), [\#11551](https://github.com/matrix-org/synapse/issues/11551), [\#11555](https://github.com/matrix-org/synapse/issues/11555), [\#11575](https://github.com/matrix-org/synapse/issues/11575), [\#11589](https://github.com/matrix-org/synapse/issues/11589), [\#11594](https://github.com/matrix-org/synapse/issues/11594), [\#11652](https://github.com/matrix-org/synapse/issues/11652), [\#11653](https://github.com/matrix-org/synapse/issues/11653), [\#11654](https://github.com/matrix-org/synapse/issues/11654), [\#11657](https://github.com/matrix-org/synapse/issues/11657))
- Fix an inaccurate and misleading comment in the `/sync` code. ([\#11550](https://github.com/matrix-org/synapse/issues/11550))
- Add missing type hints to `synapse.logging.context`. ([\#11556](https://github.com/matrix-org/synapse/issues/11556))
- Stop populating unused database column `state_events.prev_state`. ([\#11558](https://github.com/matrix-org/synapse/issues/11558))
- Minor efficiency improvements in event persistence. ([\#11560](https://github.com/matrix-org/synapse/issues/11560))
- Add some safety checks that storage functions are used correctly. ([\#11564](https://github.com/matrix-org/synapse/issues/11564), [\#11580](https://github.com/matrix-org/synapse/issues/11580))
- Make `get_device` return `None` if the device doesn't exist rather than raising an exception. ([\#11565](https://github.com/matrix-org/synapse/issues/11565))
- Split the HTML parsing code from the URL preview resource code. ([\#11566](https://github.com/matrix-org/synapse/issues/11566))
- Remove redundant `COALESCE()`s around `COUNT()`s in database queries. ([\#11570](https://github.com/matrix-org/synapse/issues/11570))
- Add missing type hints to `synapse.http`. ([\#11571](https://github.com/matrix-org/synapse/issues/11571))
- Add [MSC2716](https://github.com/matrix-org/matrix-doc/pull/2716) and [MSC3030](https://github.com/matrix-org/matrix-doc/pull/3030) to `/versions` -> `unstable_features` to detect server support. ([\#11582](https://github.com/matrix-org/synapse/issues/11582))
- Add type hints to `synapse/tests/rest/admin`. ([\#11590](https://github.com/matrix-org/synapse/issues/11590))
- Drop end-of-life Python 3.6 and Postgres 9.6 from CI. ([\#11595](https://github.com/matrix-org/synapse/issues/11595))
- Update black version and run it on all the files. ([\#11596](https://github.com/matrix-org/synapse/issues/11596))
- Add opentracing type stubs and fix associated mypy errors. ([\#11603](https://github.com/matrix-org/synapse/issues/11603), [\#11622](https://github.com/matrix-org/synapse/issues/11622))
- Improve OpenTracing support for requests which use a `ResponseCache`. ([\#11607](https://github.com/matrix-org/synapse/issues/11607))
- Improve OpenTracing support for incoming HTTP requests. ([\#11618](https://github.com/matrix-org/synapse/issues/11618))
- A number of improvements to opentracing support. ([\#11619](https://github.com/matrix-org/synapse/issues/11619))
- Drop support for Python 3.6 and Ubuntu 18.04. ([\#11633](https://github.com/matrix-org/synapse/issues/11633))
- Refactor the way that the `outlier` flag is set on events received over federation. ([\#11634](https://github.com/matrix-org/synapse/issues/11634))
- Improve the error messages from  `get_create_event_for_room`. ([\#11638](https://github.com/matrix-org/synapse/issues/11638))
- Remove redundant `get_current_events_token` method. ([\#11643](https://github.com/matrix-org/synapse/issues/11643))
- Convert `namedtuples` to `attrs`. ([\#11665](https://github.com/matrix-org/synapse/issues/11665), [\#11574](https://github.com/matrix-org/synapse/issues/11574))
- Update the `/capabilities` response to include whether support for [MSC3440](https://github.com/matrix-org/matrix-doc/pull/3440) is available. ([\#11690](https://github.com/matrix-org/synapse/issues/11690))
- Send the `Accept` header in HTTP requests made using `SimpleHttpClient.get_json`. ([\#11677](https://github.com/matrix-org/synapse/issues/11677))
- Work around Mjolnir compatibility issue by adding an import for `glob_to_regex` in `synapse.util`, where it moved from. ([\#11696](https://github.com/matrix-org/synapse/issues/11696))

Synapse 1.49.2 (2021-12-21)
===========================

This release fixes a regression introduced in Synapse 1.49.0 which could cause `/sync` requests to take significantly longer. This would particularly affect "initial" syncs for users participating in a large number of rooms, and in extreme cases, could make it impossible for such users to log in on a new client.

**Note:** in line with our [deprecation policy](https://matrix-org.github.io/synapse/latest/deprecation_policy.html) for platform dependencies, this will be the last release to support Python 3.6 and PostgreSQL 9.6, both of which have now reached upstream end-of-life. Synapse will require Python 3.7+ and PostgreSQL 10+.

**Note:** We will also stop producing packages for Ubuntu 18.04 (Bionic Beaver) after this release, as it uses Python 3.6.

Bugfixes
--------

- Fix a performance regression in `/sync` handling, introduced in 1.49.0. ([\#11583](https://github.com/matrix-org/synapse/issues/11583))

Internal Changes
----------------

- Work around a build problem on Debian Buster. ([\#11625](https://github.com/matrix-org/synapse/issues/11625))

Synapse 1.49.1 (2021-12-21)
===========================

This release fixes a regression introduced in Synapse 1.49.0 which could cause `/sync` requests to take significantly longer. This would particularly affect "initial" syncs for users participating in a large number of rooms, and in extreme cases, could make it impossible for such users to log in on a new client.

**Note:** in line with our [deprecation policy](https://matrix-org.github.io/synapse/latest/deprecation_policy.html) for platform dependencies, this will be the last release to support Python 3.6 and PostgreSQL 9.6, both of which have now reached upstream end-of-life. Synapse will require Python 3.7+ and PostgreSQL 10.

**Note:** We will also stop producing packages for Ubuntu 18.04 (Bionic Beaver) after this release, as it uses Python 3.6.

Bugfixes
--------

- Fix a performance regression in `/sync` handling, introduced in 1.49.0. ([\#11583](https://github.com/matrix-org/synapse/issues/11583))

Synapse 1.49.0 (2021-12-14)
===========================

No significant changes since version 1.49.0rc1.

Support for Ubuntu 21.04 ends next month on the 20th of January
---------------------------------------------------------------

For users of Ubuntu 21.04 (Hirsute Hippo), please be aware that [upstream support for this version of Ubuntu will end next month][Ubuntu2104EOL].
We will stop producing packages for Ubuntu 21.04 after upstream support ends.

[Ubuntu2104EOL]: https://lists.ubuntu.com/archives/ubuntu-announce/2021-December/000275.html

The wiki has been migrated to the documentation website
-------------------------------------------------------

We've decided to move the existing, somewhat stagnant pages from the GitHub wiki
to the [documentation website](https://matrix-org.github.io/synapse/latest/).

This was done for two reasons. The first was to ensure that changes are checked by
multiple authors before being committed (everyone makes mistakes!) and the second
was visibility of the documentation. Not everyone knows that Synapse has some very
useful information hidden away in its GitHub wiki pages. Bringing them to the
documentation website should help with visibility, as well as keep all Synapse documentation
in one, easily-searchable location.

Note that contributions to the documentation website happen through [GitHub pull
requests](https://github.com/matrix-org/synapse/pulls). Please visit [#synapse-dev:matrix.org](https://matrix.to/#/#synapse-dev:matrix.org)
if you need help with the process!

Synapse 1.49.0rc1 (2021-12-07)
==============================

Features
--------

- Add [MSC3030](https://github.com/matrix-org/matrix-doc/pull/3030) experimental client and federation API endpoints to get the closest event to a given timestamp. ([\#9445](https://github.com/matrix-org/synapse/issues/9445))
- Include bundled relation aggregations during a limited `/sync` request and `/relations` request, per [MSC2675](https://github.com/matrix-org/matrix-doc/pull/2675). ([\#11284](https://github.com/matrix-org/synapse/issues/11284), [\#11478](https://github.com/matrix-org/synapse/issues/11478))
- Add plugin support for controlling database background updates. ([\#11306](https://github.com/matrix-org/synapse/issues/11306), [\#11475](https://github.com/matrix-org/synapse/issues/11475), [\#11479](https://github.com/matrix-org/synapse/issues/11479))
- Support the stable API endpoints for [MSC2946](https://github.com/matrix-org/matrix-doc/pull/2946): the room `/hierarchy` endpoint. ([\#11329](https://github.com/matrix-org/synapse/issues/11329))
- Add admin API to get some information about federation status with remote servers. ([\#11407](https://github.com/matrix-org/synapse/issues/11407))
- Support expiry of refresh tokens and expiry of the overall session when refresh tokens are in use. ([\#11425](https://github.com/matrix-org/synapse/issues/11425))
- Stabilise support for [MSC2918](https://github.com/matrix-org/matrix-doc/blob/main/proposals/2918-refreshtokens.md#msc2918-refresh-tokens) refresh tokens as they have now been merged into the Matrix specification. ([\#11435](https://github.com/matrix-org/synapse/issues/11435), [\#11522](https://github.com/matrix-org/synapse/issues/11522))
- Update [MSC2918 refresh token](https://github.com/matrix-org/matrix-doc/blob/main/proposals/2918-refreshtokens.md#msc2918-refresh-tokens) support to confirm with the latest revision: accept the `refresh_tokens` parameter in the request body rather than in the URL parameters. ([\#11430](https://github.com/matrix-org/synapse/issues/11430))
- Support configuring the lifetime of non-refreshable access tokens separately to refreshable access tokens. ([\#11445](https://github.com/matrix-org/synapse/issues/11445))
- Expose `synapse_homeserver` and `synapse_worker` commands as entry points to run Synapse's main process and worker processes, respectively. Contributed by @Ma27. ([\#11449](https://github.com/matrix-org/synapse/issues/11449))
- `synctl stop` will now wait for Synapse to exit before returning. ([\#11459](https://github.com/matrix-org/synapse/issues/11459), [\#11490](https://github.com/matrix-org/synapse/issues/11490))
- Extend the "delete room" admin api to work correctly on rooms which have previously been partially deleted. ([\#11523](https://github.com/matrix-org/synapse/issues/11523))
- Add support for the `/_matrix/client/v3/login/sso/redirect/{idpId}` API from Matrix v1.1. This endpoint was overlooked when support for v3 endpoints was added in Synapse 1.48.0rc1. ([\#11451](https://github.com/matrix-org/synapse/issues/11451))

Bugfixes
--------

- Fix using [MSC2716](https://github.com/matrix-org/matrix-doc/pull/2716) batch sending in combination with event persistence workers. Contributed by @tulir at Beeper. ([\#11220](https://github.com/matrix-org/synapse/issues/11220))
- Fix a long-standing bug where all requests that read events from the database could get stuck as a result of losing the database connection, properly this time. Also fix a race condition introduced in the previous insufficient fix in Synapse 1.47.0. ([\#11376](https://github.com/matrix-org/synapse/issues/11376))
- The `/send_join` response now includes the stable `event` field instead of the unstable field from [MSC3083](https://github.com/matrix-org/matrix-doc/pull/3083). ([\#11413](https://github.com/matrix-org/synapse/issues/11413))
- Fix a bug introduced in Synapse 1.47.0 where `send_join` could fail due to an outdated `ijson` version. ([\#11439](https://github.com/matrix-org/synapse/issues/11439), [\#11441](https://github.com/matrix-org/synapse/issues/11441), [\#11460](https://github.com/matrix-org/synapse/issues/11460))
- Fix a bug introduced in Synapse 1.36.0 which could cause problems fetching event-signing keys from trusted key servers. ([\#11440](https://github.com/matrix-org/synapse/issues/11440))
- Fix a bug introduced in Synapse 1.47.1 where the media repository would fail to work if the media store path contained any symbolic links. ([\#11446](https://github.com/matrix-org/synapse/issues/11446))
- Fix an `LruCache` corruption bug, introduced in Synapse 1.38.0, that would cause certain requests to fail until the next Synapse restart. ([\#11454](https://github.com/matrix-org/synapse/issues/11454))
- Fix a long-standing bug where invites from ignored users were included in incremental syncs. ([\#11511](https://github.com/matrix-org/synapse/issues/11511))
- Fix a regression in Synapse 1.48.0 where presence workers would not clear their presence updates over replication on shutdown. ([\#11518](https://github.com/matrix-org/synapse/issues/11518))
- Fix a regression in Synapse 1.48.0 where the module API's `looping_background_call` method would spam errors to the logs when given a non-async function. ([\#11524](https://github.com/matrix-org/synapse/issues/11524))

Updates to the Docker image
---------------------------

- Update `Dockerfile-workers` to healthcheck all workers in the container. ([\#11429](https://github.com/matrix-org/synapse/issues/11429))

Improved Documentation
----------------------

- Update the media repository documentation. ([\#11415](https://github.com/matrix-org/synapse/issues/11415))
- Update section about backward extremities in the room DAG concepts doc to correct the misconception about backward extremities indicating whether we have fetched an events' `prev_events`. ([\#11469](https://github.com/matrix-org/synapse/issues/11469))

Internal Changes
----------------

- Add `Final` annotation to string constants in `synapse.api.constants` so that they get typed as `Literal`s. ([\#11356](https://github.com/matrix-org/synapse/issues/11356))
- Add a check to ensure that users cannot start the Synapse master process when `worker_app` is set. ([\#11416](https://github.com/matrix-org/synapse/issues/11416))
- Add a note about postgres memory management and hugepages to postgres doc. ([\#11467](https://github.com/matrix-org/synapse/issues/11467))
- Add missing type hints to `synapse.config` module. ([\#11465](https://github.com/matrix-org/synapse/issues/11465))
- Add missing type hints to `synapse.federation`. ([\#11483](https://github.com/matrix-org/synapse/issues/11483))
- Add type annotations to `tests.storage.test_appservice`. ([\#11488](https://github.com/matrix-org/synapse/issues/11488), [\#11492](https://github.com/matrix-org/synapse/issues/11492))
- Add type annotations to some of the configuration surrounding refresh tokens. ([\#11428](https://github.com/matrix-org/synapse/issues/11428))
- Add type hints to `synapse/tests/rest/admin`. ([\#11501](https://github.com/matrix-org/synapse/issues/11501))
- Add type hints to storage classes. ([\#11411](https://github.com/matrix-org/synapse/issues/11411))
- Add wiki pages to documentation website. ([\#11402](https://github.com/matrix-org/synapse/issues/11402))
- Clean up `tests.storage.test_main` to remove use of legacy code. ([\#11493](https://github.com/matrix-org/synapse/issues/11493))
- Clean up `tests.test_visibility` to remove legacy code. ([\#11495](https://github.com/matrix-org/synapse/issues/11495))
- Convert status codes to `HTTPStatus` in `synapse.rest.admin`. ([\#11452](https://github.com/matrix-org/synapse/issues/11452), [\#11455](https://github.com/matrix-org/synapse/issues/11455))
- Extend the `scripts-dev/sign_json` script to support signing events. ([\#11486](https://github.com/matrix-org/synapse/issues/11486))
- Improve internal types in push code. ([\#11409](https://github.com/matrix-org/synapse/issues/11409))
- Improve type annotations in `synapse.module_api`. ([\#11029](https://github.com/matrix-org/synapse/issues/11029))
- Improve type hints for `LruCache`. ([\#11453](https://github.com/matrix-org/synapse/issues/11453))
- Preparation for database schema simplifications: disambiguate queries on `state_key`. ([\#11497](https://github.com/matrix-org/synapse/issues/11497))
- Refactor `backfilled` into specific behavior function arguments (`_persist_events_and_state_updates` and downstream calls). ([\#11417](https://github.com/matrix-org/synapse/issues/11417))
- Refactor `get_version_string` to fix-up types and duplicated code. ([\#11468](https://github.com/matrix-org/synapse/issues/11468))
- Refactor various parts of the `/sync` handler. ([\#11494](https://github.com/matrix-org/synapse/issues/11494), [\#11515](https://github.com/matrix-org/synapse/issues/11515))
- Remove unnecessary `json.dumps` from `tests.rest.admin`. ([\#11461](https://github.com/matrix-org/synapse/issues/11461))
- Save the OpenID Connect session ID on login. ([\#11482](https://github.com/matrix-org/synapse/issues/11482))
- Update and clean up recently ported documentation pages. ([\#11466](https://github.com/matrix-org/synapse/issues/11466))

Synapse 1.49.0rc1 (2021-12-07)
==============================

We've decided to move the existing, somewhat stagnant pages from the GitHub wiki
to the [documentation website](https://matrix-org.github.io/synapse/latest/).

This was done for two reasons. The first was to ensure that changes are checked by
multiple authors before being committed (everyone makes mistakes!) and the second
was visibility of the documentation. Not everyone knows that Synapse has some very
useful information hidden away in its GitHub wiki pages. Bringing them to the
documentation website should help with visibility, as well as keep all Synapse documentation
in one, easily-searchable location.

Note that contributions to the documentation website happen through [GitHub pull
requests](https://github.com/matrix-org/synapse/pulls). Please visit [#synapse-dev:matrix.org](https://matrix.to/#/#synapse-dev:matrix.org)
if you need help with the process!

Features
--------

- Add [MSC3030](https://github.com/matrix-org/matrix-doc/pull/3030) experimental client and federation API endpoints to get the closest event to a given timestamp. ([\#9445](https://github.com/matrix-org/synapse/issues/9445))
- Include bundled relation aggregations during a limited `/sync` request and `/relations` request, per [MSC2675](https://github.com/matrix-org/matrix-doc/pull/2675). ([\#11284](https://github.com/matrix-org/synapse/issues/11284), [\#11478](https://github.com/matrix-org/synapse/issues/11478))
- Add plugin support for controlling database background updates. ([\#11306](https://github.com/matrix-org/synapse/issues/11306), [\#11475](https://github.com/matrix-org/synapse/issues/11475), [\#11479](https://github.com/matrix-org/synapse/issues/11479))
- Support the stable API endpoints for [MSC2946](https://github.com/matrix-org/matrix-doc/pull/2946): the room `/hierarchy` endpoint. ([\#11329](https://github.com/matrix-org/synapse/issues/11329))
- Add admin API to get some information about federation status with remote servers. ([\#11407](https://github.com/matrix-org/synapse/issues/11407))
- Support expiry of refresh tokens and expiry of the overall session when refresh tokens are in use. ([\#11425](https://github.com/matrix-org/synapse/issues/11425))
- Stabilise support for [MSC2918](https://github.com/matrix-org/matrix-doc/blob/main/proposals/2918-refreshtokens.md#msc2918-refresh-tokens) refresh tokens as they have now been merged into the Matrix specification. ([\#11435](https://github.com/matrix-org/synapse/issues/11435), [\#11522](https://github.com/matrix-org/synapse/issues/11522))
- Update [MSC2918 refresh token](https://github.com/matrix-org/matrix-doc/blob/main/proposals/2918-refreshtokens.md#msc2918-refresh-tokens) support to confirm with the latest revision: accept the `refresh_tokens` parameter in the request body rather than in the URL parameters. ([\#11430](https://github.com/matrix-org/synapse/issues/11430))
- Support configuring the lifetime of non-refreshable access tokens separately to refreshable access tokens. ([\#11445](https://github.com/matrix-org/synapse/issues/11445))
- Expose `synapse_homeserver` and `synapse_worker` commands as entry points to run Synapse's main process and worker processes, respectively. Contributed by @Ma27. ([\#11449](https://github.com/matrix-org/synapse/issues/11449))
- `synctl stop` will now wait for Synapse to exit before returning. ([\#11459](https://github.com/matrix-org/synapse/issues/11459), [\#11490](https://github.com/matrix-org/synapse/issues/11490))
- Extend the "delete room" admin api to work correctly on rooms which have previously been partially deleted. ([\#11523](https://github.com/matrix-org/synapse/issues/11523))
- Add support for the `/_matrix/client/v3/login/sso/redirect/{idpId}` API from Matrix v1.1. This endpoint was overlooked when support for v3 endpoints was added in Synapse 1.48.0rc1. ([\#11451](https://github.com/matrix-org/synapse/issues/11451))

Bugfixes
--------

- Fix using [MSC2716](https://github.com/matrix-org/matrix-doc/pull/2716) batch sending in combination with event persistence workers. Contributed by @tulir at Beeper. ([\#11220](https://github.com/matrix-org/synapse/issues/11220))
- Fix a long-standing bug where all requests that read events from the database could get stuck as a result of losing the database connection, properly this time. Also fix a race condition introduced in the previous insufficient fix in Synapse 1.47.0. ([\#11376](https://github.com/matrix-org/synapse/issues/11376))
- The `/send_join` response now includes the stable `event` field instead of the unstable field from [MSC3083](https://github.com/matrix-org/matrix-doc/pull/3083). ([\#11413](https://github.com/matrix-org/synapse/issues/11413))
- Fix a bug introduced in Synapse 1.47.0 where `send_join` could fail due to an outdated `ijson` version. ([\#11439](https://github.com/matrix-org/synapse/issues/11439), [\#11441](https://github.com/matrix-org/synapse/issues/11441), [\#11460](https://github.com/matrix-org/synapse/issues/11460))
- Fix a bug introduced in Synapse 1.36.0 which could cause problems fetching event-signing keys from trusted key servers. ([\#11440](https://github.com/matrix-org/synapse/issues/11440))
- Fix a bug introduced in Synapse 1.47.1 where the media repository would fail to work if the media store path contained any symbolic links. ([\#11446](https://github.com/matrix-org/synapse/issues/11446))
- Fix an `LruCache` corruption bug, introduced in Synapse 1.38.0, that would cause certain requests to fail until the next Synapse restart. ([\#11454](https://github.com/matrix-org/synapse/issues/11454))
- Fix a long-standing bug where invites from ignored users were included in incremental syncs. ([\#11511](https://github.com/matrix-org/synapse/issues/11511))
- Fix a regression in Synapse 1.48.0 where presence workers would not clear their presence updates over replication on shutdown. ([\#11518](https://github.com/matrix-org/synapse/issues/11518))
- Fix a regression in Synapse 1.48.0 where the module API's `looping_background_call` method would spam errors to the logs when given a non-async function. ([\#11524](https://github.com/matrix-org/synapse/issues/11524))

Updates to the Docker image
---------------------------

- Update `Dockerfile-workers` to healthcheck all workers in the container. ([\#11429](https://github.com/matrix-org/synapse/issues/11429))

Improved Documentation
----------------------

- Update the media repository documentation. ([\#11415](https://github.com/matrix-org/synapse/issues/11415))
- Update section about backward extremities in the room DAG concepts doc to correct the misconception about backward extremities indicating whether we have fetched an events' `prev_events`. ([\#11469](https://github.com/matrix-org/synapse/issues/11469))

Internal Changes
----------------

- Add `Final` annotation to string constants in `synapse.api.constants` so that they get typed as `Literal`s. ([\#11356](https://github.com/matrix-org/synapse/issues/11356))
- Add a check to ensure that users cannot start the Synapse master process when `worker_app` is set. ([\#11416](https://github.com/matrix-org/synapse/issues/11416))
- Add a note about postgres memory management and hugepages to postgres doc. ([\#11467](https://github.com/matrix-org/synapse/issues/11467))
- Add missing type hints to `synapse.config` module. ([\#11465](https://github.com/matrix-org/synapse/issues/11465))
- Add missing type hints to `synapse.federation`. ([\#11483](https://github.com/matrix-org/synapse/issues/11483))
- Add type annotations to `tests.storage.test_appservice`. ([\#11488](https://github.com/matrix-org/synapse/issues/11488), [\#11492](https://github.com/matrix-org/synapse/issues/11492))
- Add type annotations to some of the configuration surrounding refresh tokens. ([\#11428](https://github.com/matrix-org/synapse/issues/11428))
- Add type hints to `synapse/tests/rest/admin`. ([\#11501](https://github.com/matrix-org/synapse/issues/11501))
- Add type hints to storage classes. ([\#11411](https://github.com/matrix-org/synapse/issues/11411))
- Add wiki pages to documentation website. ([\#11402](https://github.com/matrix-org/synapse/issues/11402))
- Clean up `tests.storage.test_main` to remove use of legacy code. ([\#11493](https://github.com/matrix-org/synapse/issues/11493))
- Clean up `tests.test_visibility` to remove legacy code. ([\#11495](https://github.com/matrix-org/synapse/issues/11495))
- Convert status codes to `HTTPStatus` in `synapse.rest.admin`. ([\#11452](https://github.com/matrix-org/synapse/issues/11452), [\#11455](https://github.com/matrix-org/synapse/issues/11455))
- Extend the `scripts-dev/sign_json` script to support signing events. ([\#11486](https://github.com/matrix-org/synapse/issues/11486))
- Improve internal types in push code. ([\#11409](https://github.com/matrix-org/synapse/issues/11409))
- Improve type annotations in `synapse.module_api`. ([\#11029](https://github.com/matrix-org/synapse/issues/11029))
- Improve type hints for `LruCache`. ([\#11453](https://github.com/matrix-org/synapse/issues/11453))
- Preparation for database schema simplifications: disambiguate queries on `state_key`. ([\#11497](https://github.com/matrix-org/synapse/issues/11497))
- Refactor `backfilled` into specific behavior function arguments (`_persist_events_and_state_updates` and downstream calls). ([\#11417](https://github.com/matrix-org/synapse/issues/11417))
- Refactor `get_version_string` to fix-up types and duplicated code. ([\#11468](https://github.com/matrix-org/synapse/issues/11468))
- Refactor various parts of the `/sync` handler. ([\#11494](https://github.com/matrix-org/synapse/issues/11494), [\#11515](https://github.com/matrix-org/synapse/issues/11515))
- Remove unnecessary `json.dumps` from `tests.rest.admin`. ([\#11461](https://github.com/matrix-org/synapse/issues/11461))
- Save the OpenID Connect session ID on login. ([\#11482](https://github.com/matrix-org/synapse/issues/11482))
- Update and clean up recently ported documentation pages. ([\#11466](https://github.com/matrix-org/synapse/issues/11466))

Synapse 1.48.0 (2021-11-30)
===========================

This release removes support for the long-deprecated `trust_identity_server_for_password_resets` configuration flag.

This release also fixes some performance issues with some background database updates introduced in Synapse 1.47.0.

No significant changes since 1.48.0rc1.

Synapse 1.48.0rc1 (2021-11-25)
==============================

Features
--------

- Experimental support for the thread relation defined in [MSC3440](https://github.com/matrix-org/matrix-doc/pull/3440). ([\#11161](https://github.com/matrix-org/synapse/issues/11161))
- Support filtering by relation senders & types per [MSC3440](https://github.com/matrix-org/matrix-doc/pull/3440). ([\#11236](https://github.com/matrix-org/synapse/issues/11236))
- Add support for the `/_matrix/client/v3` and `/_matrix/media/v3` APIs from Matrix v1.1. ([\#11318](https://github.com/matrix-org/synapse/issues/11318), [\#11371](https://github.com/matrix-org/synapse/issues/11371))
- Support the stable version of [MSC2778](https://github.com/matrix-org/matrix-doc/pull/2778): the `m.login.application_service` login type. Contributed by @tulir. ([\#11335](https://github.com/matrix-org/synapse/issues/11335))
- Add a new version of delete room admin API `DELETE /_synapse/admin/v2/rooms/<room_id>` to run it in the background. Contributed by @dklimpel. ([\#11223](https://github.com/matrix-org/synapse/issues/11223))
- Allow the admin [Delete Room API](https://matrix-org.github.io/synapse/latest/admin_api/rooms.html#delete-room-api) to block a room without the need to join it. ([\#11228](https://github.com/matrix-org/synapse/issues/11228))
- Add an admin API to un-shadow-ban a user. ([\#11347](https://github.com/matrix-org/synapse/issues/11347))
- Add an admin API to run background database schema updates. ([\#11352](https://github.com/matrix-org/synapse/issues/11352))
- Add an admin API for blocking a room. ([\#11324](https://github.com/matrix-org/synapse/issues/11324))
- Update the JWT login type to support custom a `sub` claim. ([\#11361](https://github.com/matrix-org/synapse/issues/11361))
- Store and allow querying of arbitrary event relations. ([\#11391](https://github.com/matrix-org/synapse/issues/11391))

Bugfixes
--------

- Fix a long-standing bug wherein display names or avatar URLs containing null bytes cause an internal server error when stored in the DB. ([\#11230](https://github.com/matrix-org/synapse/issues/11230))
- Prevent [MSC2716](https://github.com/matrix-org/matrix-doc/pull/2716) historical state events from being pushed to an application service via `/transactions`. ([\#11265](https://github.com/matrix-org/synapse/issues/11265))
- Fix a long-standing bug where uploading extremely thin images (e.g. 1000x1) would fail. Contributed by @Neeeflix. ([\#11288](https://github.com/matrix-org/synapse/issues/11288))
- Fix a bug, introduced in Synapse 1.46.0, which caused the `check_3pid_auth` and `on_logged_out` callbacks in legacy password authentication provider modules to not be registered. Modules using the generic module interface were not affected. ([\#11340](https://github.com/matrix-org/synapse/issues/11340))
- Fix a bug introduced in 1.41.0 where space hierarchy responses would be incorrectly reused if multiple users were to make the same request at the same time. ([\#11355](https://github.com/matrix-org/synapse/issues/11355))
- Fix a bug introduced in 1.45.0 where the `read_templates` method of the module API would error. ([\#11377](https://github.com/matrix-org/synapse/issues/11377))
- Fix an issue introduced in 1.47.0 which prevented servers re-joining rooms they had previously left, if their signing keys were replaced. ([\#11379](https://github.com/matrix-org/synapse/issues/11379))
- Fix a bug introduced in 1.13.0 where creating and publishing a room could cause errors if `room_list_publication_rules` is configured. ([\#11392](https://github.com/matrix-org/synapse/issues/11392))
- Improve performance of various background database updates. ([\#11421](https://github.com/matrix-org/synapse/issues/11421), [\#11422](https://github.com/matrix-org/synapse/issues/11422))

Improved Documentation
----------------------

- Suggest users of the Debian packages add configuration to `/etc/matrix-synapse/conf.d/` to prevent, upon upgrade, being asked to choose between their configuration and the maintainer's. ([\#11281](https://github.com/matrix-org/synapse/issues/11281))
- Fix typos in the documentation for the `username_available` admin API. Contributed by Stanislav Motylkov. ([\#11286](https://github.com/matrix-org/synapse/issues/11286))
- Add Single Sign-On, SAML and CAS pages to the documentation. ([\#11298](https://github.com/matrix-org/synapse/issues/11298))
- Change the word 'Home server' as one word 'homeserver' in documentation. ([\#11320](https://github.com/matrix-org/synapse/issues/11320))
- Fix missing quotes for wildcard domains in `federation_certificate_verification_whitelist`. ([\#11381](https://github.com/matrix-org/synapse/issues/11381))

Deprecations and Removals
-------------------------

- Remove deprecated `trust_identity_server_for_password_resets` configuration flag. ([\#11333](https://github.com/matrix-org/synapse/issues/11333), [\#11395](https://github.com/matrix-org/synapse/issues/11395))

Internal Changes
----------------

- Add type annotations to `synapse.metrics`. ([\#10847](https://github.com/matrix-org/synapse/issues/10847))
- Split out federated PDU retrieval function into a non-cached version. ([\#11242](https://github.com/matrix-org/synapse/issues/11242))
- Clean up code relating to to-device messages and sending ephemeral events to application services. ([\#11247](https://github.com/matrix-org/synapse/issues/11247))
- Fix a small typo in the error response when a relation type other than 'm.annotation' is passed to `GET /rooms/{room_id}/aggregations/{event_id}`. ([\#11278](https://github.com/matrix-org/synapse/issues/11278))
- Drop unused database tables `room_stats_historical` and `user_stats_historical`. ([\#11280](https://github.com/matrix-org/synapse/issues/11280))
- Require all files in synapse/ and tests/ to pass mypy unless specifically excluded. ([\#11282](https://github.com/matrix-org/synapse/issues/11282), [\#11285](https://github.com/matrix-org/synapse/issues/11285), [\#11359](https://github.com/matrix-org/synapse/issues/11359))
- Add missing type hints to `synapse.app`. ([\#11287](https://github.com/matrix-org/synapse/issues/11287))
- Remove unused parameters on `FederationEventHandler._check_event_auth`. ([\#11292](https://github.com/matrix-org/synapse/issues/11292))
- Add type hints to `synapse._scripts`. ([\#11297](https://github.com/matrix-org/synapse/issues/11297))
- Fix an issue which prevented the `remove_deleted_devices_from_device_inbox` background database schema update from running when updating from a recent Synapse version. ([\#11303](https://github.com/matrix-org/synapse/issues/11303))
- Add type hints to storage classes. ([\#11307](https://github.com/matrix-org/synapse/issues/11307), [\#11310](https://github.com/matrix-org/synapse/issues/11310), [\#11311](https://github.com/matrix-org/synapse/issues/11311), [\#11312](https://github.com/matrix-org/synapse/issues/11312), [\#11313](https://github.com/matrix-org/synapse/issues/11313), [\#11314](https://github.com/matrix-org/synapse/issues/11314), [\#11316](https://github.com/matrix-org/synapse/issues/11316), [\#11322](https://github.com/matrix-org/synapse/issues/11322), [\#11332](https://github.com/matrix-org/synapse/issues/11332), [\#11339](https://github.com/matrix-org/synapse/issues/11339), [\#11342](https://github.com/matrix-org/synapse/issues/11342))
- Add type hints to `synapse.util`. ([\#11321](https://github.com/matrix-org/synapse/issues/11321), [\#11328](https://github.com/matrix-org/synapse/issues/11328))
- Improve type annotations in Synapse's test suite. ([\#11323](https://github.com/matrix-org/synapse/issues/11323), [\#11330](https://github.com/matrix-org/synapse/issues/11330))
- Test that room alias deletion works as intended. ([\#11327](https://github.com/matrix-org/synapse/issues/11327))
- Add type annotations for some methods and properties in the module API. ([\#11341](https://github.com/matrix-org/synapse/issues/11341))
- Fix running `scripts-dev/complement.sh`, which was broken in v1.47.0rc1. ([\#11368](https://github.com/matrix-org/synapse/issues/11368))
- Rename internal functions for token generation to better reflect what they do. ([\#11369](https://github.com/matrix-org/synapse/issues/11369), [\#11370](https://github.com/matrix-org/synapse/issues/11370))
- Add type hints to configuration classes. ([\#11377](https://github.com/matrix-org/synapse/issues/11377))
- Publish a `develop` image to Docker Hub. ([\#11380](https://github.com/matrix-org/synapse/issues/11380))
- Keep fallback key marked as used if it's re-uploaded. ([\#11382](https://github.com/matrix-org/synapse/issues/11382))
- Use `auto_attribs` on the `attrs` class `RefreshTokenLookupResult`. ([\#11386](https://github.com/matrix-org/synapse/issues/11386))
- Rename unstable `access_token_lifetime` configuration option to `refreshable_access_token_lifetime` to make it clear it only concerns refreshable access tokens. ([\#11388](https://github.com/matrix-org/synapse/issues/11388))
- Do not run the broken MSC2716 tests when running `scripts-dev/complement.sh`. ([\#11389](https://github.com/matrix-org/synapse/issues/11389))
- Remove dead code from supporting ACME. ([\#11393](https://github.com/matrix-org/synapse/issues/11393))
- Refactor including the bundled relations when serializing an event. ([\#11408](https://github.com/matrix-org/synapse/issues/11408))

Synapse 1.48.0rc1 (2021-11-25)
==============================

This release removes support for the long-deprecated `trust_identity_server_for_password_resets` configuration flag.

This release also fixes some performance issues with some background database updates introduced in Synapse 1.47.0.

Features
--------

- Experimental support for the thread relation defined in [MSC3440](https://github.com/matrix-org/matrix-doc/pull/3440). ([\#11161](https://github.com/matrix-org/synapse/issues/11161))
- Support filtering by relation senders & types per [MSC3440](https://github.com/matrix-org/matrix-doc/pull/3440). ([\#11236](https://github.com/matrix-org/synapse/issues/11236))
- Add support for the `/_matrix/client/v3` and `/_matrix/media/v3` APIs from Matrix v1.1. ([\#11318](https://github.com/matrix-org/synapse/issues/11318), [\#11371](https://github.com/matrix-org/synapse/issues/11371))
- Support the stable version of [MSC2778](https://github.com/matrix-org/matrix-doc/pull/2778): the `m.login.application_service` login type. Contributed by @tulir. ([\#11335](https://github.com/matrix-org/synapse/issues/11335))
- Add a new version of delete room admin API `DELETE /_synapse/admin/v2/rooms/<room_id>` to run it in the background. Contributed by @dklimpel. ([\#11223](https://github.com/matrix-org/synapse/issues/11223))
- Allow the admin [Delete Room API](https://matrix-org.github.io/synapse/latest/admin_api/rooms.html#delete-room-api) to block a room without the need to join it. ([\#11228](https://github.com/matrix-org/synapse/issues/11228))
- Add an admin API to un-shadow-ban a user. ([\#11347](https://github.com/matrix-org/synapse/issues/11347))
- Add an admin API to run background database schema updates. ([\#11352](https://github.com/matrix-org/synapse/issues/11352))
- Add an admin API for blocking a room. ([\#11324](https://github.com/matrix-org/synapse/issues/11324))
- Update the JWT login type to support custom a `sub` claim. ([\#11361](https://github.com/matrix-org/synapse/issues/11361))
- Store and allow querying of arbitrary event relations. ([\#11391](https://github.com/matrix-org/synapse/issues/11391))

Bugfixes
--------

- Fix a long-standing bug wherein display names or avatar URLs containing null bytes cause an internal server error when stored in the DB. ([\#11230](https://github.com/matrix-org/synapse/issues/11230))
- Prevent [MSC2716](https://github.com/matrix-org/matrix-doc/pull/2716) historical state events from being pushed to an application service via `/transactions`. ([\#11265](https://github.com/matrix-org/synapse/issues/11265))
- Fix a long-standing bug where uploading extremely thin images (e.g. 1000x1) would fail. Contributed by @Neeeflix. ([\#11288](https://github.com/matrix-org/synapse/issues/11288))
- Fix a bug, introduced in Synapse 1.46.0, which caused the `check_3pid_auth` and `on_logged_out` callbacks in legacy password authentication provider modules to not be registered. Modules using the generic module interface were not affected. ([\#11340](https://github.com/matrix-org/synapse/issues/11340))
- Fix a bug introduced in 1.41.0 where space hierarchy responses would be incorrectly reused if multiple users were to make the same request at the same time. ([\#11355](https://github.com/matrix-org/synapse/issues/11355))
- Fix a bug introduced in 1.45.0 where the `read_templates` method of the module API would error. ([\#11377](https://github.com/matrix-org/synapse/issues/11377))
- Fix an issue introduced in 1.47.0 which prevented servers re-joining rooms they had previously left, if their signing keys were replaced. ([\#11379](https://github.com/matrix-org/synapse/issues/11379))
- Fix a bug introduced in 1.13.0 where creating and publishing a room could cause errors if `room_list_publication_rules` is configured. ([\#11392](https://github.com/matrix-org/synapse/issues/11392))
- Improve performance of various background database updates. ([\#11421](https://github.com/matrix-org/synapse/issues/11421), [\#11422](https://github.com/matrix-org/synapse/issues/11422))

Improved Documentation
----------------------

- Suggest users of the Debian packages add configuration to `/etc/matrix-synapse/conf.d/` to prevent, upon upgrade, being asked to choose between their configuration and the maintainer's. ([\#11281](https://github.com/matrix-org/synapse/issues/11281))
- Fix typos in the documentation for the `username_available` admin API. Contributed by Stanislav Motylkov. ([\#11286](https://github.com/matrix-org/synapse/issues/11286))
- Add Single Sign-On, SAML and CAS pages to the documentation. ([\#11298](https://github.com/matrix-org/synapse/issues/11298))
- Change the word 'Home server' as one word 'homeserver' in documentation. ([\#11320](https://github.com/matrix-org/synapse/issues/11320))
- Fix missing quotes for wildcard domains in `federation_certificate_verification_whitelist`. ([\#11381](https://github.com/matrix-org/synapse/issues/11381))

Deprecations and Removals
-------------------------

- Remove deprecated `trust_identity_server_for_password_resets` configuration flag. ([\#11395](https://github.com/matrix-org/synapse/issues/11395))

Internal Changes
----------------

- Add type annotations to `synapse.metrics`. ([\#10847](https://github.com/matrix-org/synapse/issues/10847))
- Split out federated PDU retrieval function into a non-cached version. ([\#11242](https://github.com/matrix-org/synapse/issues/11242))
- Clean up code relating to to-device messages and sending ephemeral events to application services. ([\#11247](https://github.com/matrix-org/synapse/issues/11247))
- Fix a small typo in the error response when a relation type other than 'm.annotation' is passed to `GET /rooms/{room_id}/aggregations/{event_id}`. ([\#11278](https://github.com/matrix-org/synapse/issues/11278))
- Drop unused database tables `room_stats_historical` and `user_stats_historical`. ([\#11280](https://github.com/matrix-org/synapse/issues/11280))
- Require all files in synapse/ and tests/ to pass mypy unless specifically excluded. ([\#11282](https://github.com/matrix-org/synapse/issues/11282), [\#11285](https://github.com/matrix-org/synapse/issues/11285), [\#11359](https://github.com/matrix-org/synapse/issues/11359))
- Add missing type hints to `synapse.app`. ([\#11287](https://github.com/matrix-org/synapse/issues/11287))
- Remove unused parameters on `FederationEventHandler._check_event_auth`. ([\#11292](https://github.com/matrix-org/synapse/issues/11292))
- Add type hints to `synapse._scripts`. ([\#11297](https://github.com/matrix-org/synapse/issues/11297))
- Fix an issue which prevented the `remove_deleted_devices_from_device_inbox` background database schema update from running when updating from a recent Synapse version. ([\#11303](https://github.com/matrix-org/synapse/issues/11303))
- Add type hints to storage classes. ([\#11307](https://github.com/matrix-org/synapse/issues/11307), [\#11310](https://github.com/matrix-org/synapse/issues/11310), [\#11311](https://github.com/matrix-org/synapse/issues/11311), [\#11312](https://github.com/matrix-org/synapse/issues/11312), [\#11313](https://github.com/matrix-org/synapse/issues/11313), [\#11314](https://github.com/matrix-org/synapse/issues/11314), [\#11316](https://github.com/matrix-org/synapse/issues/11316), [\#11322](https://github.com/matrix-org/synapse/issues/11322), [\#11332](https://github.com/matrix-org/synapse/issues/11332), [\#11339](https://github.com/matrix-org/synapse/issues/11339), [\#11342](https://github.com/matrix-org/synapse/issues/11342))
- Add type hints to `synapse.util`. ([\#11321](https://github.com/matrix-org/synapse/issues/11321), [\#11328](https://github.com/matrix-org/synapse/issues/11328))
- Improve type annotations in Synapse's test suite. ([\#11323](https://github.com/matrix-org/synapse/issues/11323), [\#11330](https://github.com/matrix-org/synapse/issues/11330))
- Test that room alias deletion works as intended. ([\#11327](https://github.com/matrix-org/synapse/issues/11327))
- Remove deprecated `trust_identity_server_for_password_resets` configuration flag. ([\#11333](https://github.com/matrix-org/synapse/issues/11333))
- Add type annotations for some methods and properties in the module API. ([\#11341](https://github.com/matrix-org/synapse/issues/11341))
- Fix running `scripts-dev/complement.sh`, which was broken in v1.47.0rc1. ([\#11368](https://github.com/matrix-org/synapse/issues/11368))
- Rename internal functions for token generation to better reflect what they do. ([\#11369](https://github.com/matrix-org/synapse/issues/11369), [\#11370](https://github.com/matrix-org/synapse/issues/11370))
- Add type hints to configuration classes. ([\#11377](https://github.com/matrix-org/synapse/issues/11377))
- Publish a `develop` image to Docker Hub. ([\#11380](https://github.com/matrix-org/synapse/issues/11380))
- Keep fallback key marked as used if it's re-uploaded. ([\#11382](https://github.com/matrix-org/synapse/issues/11382))
- Use `auto_attribs` on the `attrs` class `RefreshTokenLookupResult`. ([\#11386](https://github.com/matrix-org/synapse/issues/11386))
- Rename unstable `access_token_lifetime` configuration option to `refreshable_access_token_lifetime` to make it clear it only concerns refreshable access tokens. ([\#11388](https://github.com/matrix-org/synapse/issues/11388))
- Do not run the broken MSC2716 tests when running `scripts-dev/complement.sh`. ([\#11389](https://github.com/matrix-org/synapse/issues/11389))
- Remove dead code from supporting ACME. ([\#11393](https://github.com/matrix-org/synapse/issues/11393))
- Refactor including the bundled relations when serializing an event. ([\#11408](https://github.com/matrix-org/synapse/issues/11408))

Synapse 1.47.1 (2021-11-23)
===========================

This release fixes a security issue in the media store, affecting all prior releases 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.

Security advisory
-----------------

The following issue is fixed in 1.47.1.

- **[GHSA-3hfw-x7gx-437c](https://github.com/matrix-org/synapse/security/advisories/GHSA-3hfw-x7gx-437c) / [CVE-2021-41281](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41281): Path traversal when downloading remote media.**

  Synapse instances with the media repository enabled can be tricked into downloading a file from a remote server into an arbitrary directory, potentially outside the media store directory.

  The last two directories and file name of the path are chosen randomly by Synapse and cannot be controlled by an attacker, which limits the impact.

  Homeservers with the media repository disabled are unaffected. Homeservers configured with a federation whitelist are also unaffected.

  Fixed by [91f2bd090](https://github.com/matrix-org/synapse/commit/91f2bd090).

Synapse 1.47.0 (2021-11-17)
===========================

No significant changes since 1.47.0rc3.

Synapse 1.47.0rc3 (2021-11-16)
==============================

Bugfixes
--------

- Fix a bug introduced in 1.47.0rc1 which caused worker processes to not halt startup in the presence of outstanding database migrations. ([\#11346](https://github.com/matrix-org/synapse/issues/11346))
- Fix a bug introduced in 1.47.0rc1 which prevented the 'remove deleted devices from `device_inbox` column' background process from running when updating from a recent Synapse version. ([\#11303](https://github.com/matrix-org/synapse/issues/11303), [\#11353](https://github.com/matrix-org/synapse/issues/11353))

Synapse 1.47.0rc2 (2021-11-10)
==============================

This fixes an issue with publishing the Debian packages for 1.47.0rc1.
It is otherwise identical to 1.47.0rc1.

Synapse 1.47.0rc1 (2021-11-09)
==============================

Deprecations and Removals
-------------------------

- The `user_may_create_room_with_invites` module callback is now deprecated. Please refer to the [upgrade notes](https://matrix-org.github.io/synapse/develop/upgrade#upgrading-to-v1470) for more information. ([\#11206](https://github.com/matrix-org/synapse/issues/11206))
- Remove deprecated admin API to delete rooms (`POST /_synapse/admin/v1/rooms/<room_id>/delete`). ([\#11213](https://github.com/matrix-org/synapse/issues/11213))

Features
--------

- Advertise support for Client-Server API r0.6.1. ([\#11097](https://github.com/matrix-org/synapse/issues/11097))
- Add search by room ID and room alias to the List Room admin API. ([\#11099](https://github.com/matrix-org/synapse/issues/11099))
- Add an `on_new_event` third-party rules callback to allow Synapse modules to act after an event has been sent into a room. ([\#11126](https://github.com/matrix-org/synapse/issues/11126))
- Add a module API method to update a user's membership in a room. ([\#11147](https://github.com/matrix-org/synapse/issues/11147))
- Add metrics for thread pool usage. ([\#11178](https://github.com/matrix-org/synapse/issues/11178))
- Support the stable room type field for [MSC3288](https://github.com/matrix-org/matrix-doc/pull/3288). ([\#11187](https://github.com/matrix-org/synapse/issues/11187))
- Add a module API method to retrieve the current state of a room. ([\#11204](https://github.com/matrix-org/synapse/issues/11204))
- Calculate a default value for `public_baseurl` based on `server_name`. ([\#11210](https://github.com/matrix-org/synapse/issues/11210))
- Add support for serving `/.well-known/matrix/server` files, to redirect federation traffic to port 443. ([\#11211](https://github.com/matrix-org/synapse/issues/11211))
- Add admin APIs to pause, start and check the status of background updates. ([\#11263](https://github.com/matrix-org/synapse/issues/11263))

Bugfixes
--------

- Fix a long-standing bug which allowed hidden devices to receive to-device messages, resulting in unnecessary database bloat. ([\#10097](https://github.com/matrix-org/synapse/issues/10097))
- Fix a long-standing bug where messages in the `device_inbox` table for deleted devices would persist indefinitely. Contributed by @dklimpel and @JohannesKleine. ([\#10969](https://github.com/matrix-org/synapse/issues/10969), [\#11212](https://github.com/matrix-org/synapse/issues/11212))
- Do not accept events if a third-party rule `check_event_allowed` callback raises an exception. ([\#11033](https://github.com/matrix-org/synapse/issues/11033))
- Fix long-standing bug where verification requests could fail in certain cases if a federation whitelist was in place but did not include your own homeserver. ([\#11129](https://github.com/matrix-org/synapse/issues/11129))
- Allow an empty list of `state_events_at_start` to be sent when using the [MSC2716](https://github.com/matrix-org/matrix-doc/pull/2716) `/batch_send` endpoint and the author of the historical messages is already part of the current room state at the given `?prev_event_id`. ([\#11188](https://github.com/matrix-org/synapse/issues/11188))
- Fix a bug introduced in Synapse 1.45.0 which prevented the `synapse_review_recent_signups` script from running. Contributed by @samuel-p. ([\#11191](https://github.com/matrix-org/synapse/issues/11191))
- Delete `to_device` messages for hidden devices that will never be read, reducing database size. ([\#11199](https://github.com/matrix-org/synapse/issues/11199))
- Fix a long-standing bug wherein a missing `Content-Type` header when downloading remote media would cause Synapse to throw an error. ([\#11200](https://github.com/matrix-org/synapse/issues/11200))
- Fix a long-standing bug which could result in serialization errors and potentially duplicate transaction data when sending ephemeral events to application services. Contributed by @Fizzadar at Beeper. ([\#11207](https://github.com/matrix-org/synapse/issues/11207))
- Fix a bug introduced in Synapse 1.35.0 which made it impossible to join rooms that return a `send_join` response containing floats. ([\#11217](https://github.com/matrix-org/synapse/issues/11217))
- Fix long-standing bug where cross signing keys were not included in the response to `/r0/keys/query` the first time a remote user was queried. ([\#11234](https://github.com/matrix-org/synapse/issues/11234))
- Fix a long-standing bug where all requests that read events from the database could get stuck as a result of losing the database connection. ([\#11240](https://github.com/matrix-org/synapse/issues/11240))
- Fix a bug preventing Synapse from being rolled back to an earlier version when using workers. ([\#11255](https://github.com/matrix-org/synapse/issues/11255), [\#11276](https://github.com/matrix-org/synapse/issues/11276))
- Fix a bug introduced in Synapse 1.37.1 which caused a remote event being processed by a worker to not get processed on restart if the worker was killed. ([\#11262](https://github.com/matrix-org/synapse/issues/11262))
- Only allow old Element/Riot Android clients to send read receipts without a request body. All other clients must include a request body as required by the specification. Contributed by @rogersheu. ([\#11157](https://github.com/matrix-org/synapse/issues/11157))

Updates to the Docker image
---------------------------

- Avoid changing user ID when started as a non-root user, and no explicit `UID` is set. ([\#11209](https://github.com/matrix-org/synapse/issues/11209))

Improved Documentation
----------------------

- Improve example HAProxy config in the docs to properly handle HTTP `Host` headers with port information. This is required for federation over port 443 to work correctly. ([\#11128](https://github.com/matrix-org/synapse/issues/11128))
- Add documentation for using Authentik as an OpenID Connect Identity Provider. Contributed by @samip5. ([\#11151](https://github.com/matrix-org/synapse/issues/11151))
- Clarify lack of support for Windows. ([\#11198](https://github.com/matrix-org/synapse/issues/11198))
- Improve code formatting and fix a few typos in docs. Contributed by @sumnerevans at Beeper. ([\#11221](https://github.com/matrix-org/synapse/issues/11221))
- Add documentation for using LemonLDAP as an OpenID Connect Identity Provider. Contributed by @l00ptr. ([\#11257](https://github.com/matrix-org/synapse/issues/11257))

Internal Changes
----------------

- Add type annotations for the `log_function` decorator. ([\#10943](https://github.com/matrix-org/synapse/issues/10943))
- Add type hints to `synapse.events`. ([\#11098](https://github.com/matrix-org/synapse/issues/11098))
- Remove and document unnecessary `RoomStreamToken` checks in application service ephemeral event code. ([\#11137](https://github.com/matrix-org/synapse/issues/11137))
- Add type hints so that `synapse.http` passes `mypy` checks. ([\#11164](https://github.com/matrix-org/synapse/issues/11164))
- Update scripts to pass Shellcheck lints. ([\#11166](https://github.com/matrix-org/synapse/issues/11166))
- Add knock information in admin export. Contributed by Rafael Gonçalves. ([\#11171](https://github.com/matrix-org/synapse/issues/11171))
- Add tests to check that `ClientIpStore.get_last_client_ip_by_device` and `get_user_ip_and_agents` combine database and in-memory data correctly. ([\#11179](https://github.com/matrix-org/synapse/issues/11179))
- Refactor `Filter` to check different fields depending on the data type. ([\#11194](https://github.com/matrix-org/synapse/issues/11194))
- Improve type hints for the relations datastore. ([\#11205](https://github.com/matrix-org/synapse/issues/11205))
- Replace outdated links in the pull request checklist with links to the rendered documentation. ([\#11225](https://github.com/matrix-org/synapse/issues/11225))
- Fix a bug in unit test `test_block_room_and_not_purge`. ([\#11226](https://github.com/matrix-org/synapse/issues/11226))
- In `ObservableDeferred`, run observers in the order they were registered. ([\#11229](https://github.com/matrix-org/synapse/issues/11229))
- Minor speed up to start up times and getting updates for groups by adding missing index to `local_group_updates.stream_id`. ([\#11231](https://github.com/matrix-org/synapse/issues/11231))
- Add `twine` and `towncrier` as dev dependencies, as they're used by the release script. ([\#11233](https://github.com/matrix-org/synapse/issues/11233))
- Allow `stream_writers.typing` config to be a list of one worker. ([\#11237](https://github.com/matrix-org/synapse/issues/11237))
- Remove debugging statement in tests. ([\#11239](https://github.com/matrix-org/synapse/issues/11239))
- Fix [MSC2716](https://github.com/matrix-org/matrix-doc/pull/2716) historical messages backfilling in random order on remote homeservers. ([\#11244](https://github.com/matrix-org/synapse/issues/11244))
- Add an additional test for the `cachedList` method decorator. ([\#11246](https://github.com/matrix-org/synapse/issues/11246))
- Make minor correction to the type of `auth_checkers` callbacks. ([\#11253](https://github.com/matrix-org/synapse/issues/11253))
- Clean up trivial aspects of the Debian package build tooling. ([\#11269](https://github.com/matrix-org/synapse/issues/11269), [\#11273](https://github.com/matrix-org/synapse/issues/11273))
- Blacklist new SyTest that checks that key uploads are valid pending the validation being implemented in Synapse. ([\#11270](https://github.com/matrix-org/synapse/issues/11270))

Synapse 1.47.0rc3 (2021-11-16)
==============================

Bugfixes
--------

- Fix a bug introduced in 1.47.0rc1 which caused worker processes to not halt startup in the presence of outstanding database migrations. ([\#11346](https://github.com/matrix-org/synapse/issues/11346))
- Fix a bug introduced in 1.47.0rc1 which prevented the 'remove deleted devices from `device_inbox` column' background process from running when updating from a recent Synapse version. ([\#11303](https://github.com/matrix-org/synapse/issues/11303), [\#11353](https://github.com/matrix-org/synapse/issues/11353))

Synapse 1.47.0rc2 (2021-11-10)
==============================

This fixes an issue with publishing the Debian packages for 1.47.0rc1.
It is otherwise identical to 1.47.0rc1.