- Fix bug where we leaked extremities when we soft failed events, leading to performance degradation. ([\#5274](https://github.com/matrix-org/synapse/issues/5274), [\#5278](https://github.com/matrix-org/synapse/issues/5278), [\#5291](https://github.com/matrix-org/synapse/issues/5291))
Synapse 0.99.5.1 (2019-05-22)
=============================
0.99.5.1 supersedes 0.99.5 due to malformed debian changelog - no functional changes.
Synapse 0.99.5 (2019-05-22)
===========================
No significant changes.
Synapse 0.99.5rc1 (2019-05-21)
==============================
Features
--------
- Add ability to blacklist IP ranges for the federation client. ([\#5043](https://github.com/matrix-org/synapse/issues/5043))
- Ratelimiting configuration for clients sending messages and the federation server has been altered to match login ratelimiting. The old configuration names will continue working. Check the sample config for details of the new names. ([\#5181](https://github.com/matrix-org/synapse/issues/5181))
- Drop support for the undocumented /_matrix/client/v2_alpha API prefix. ([\#5190](https://github.com/matrix-org/synapse/issues/5190))
- Add an option to disable per-room profiles. ([\#5196](https://github.com/matrix-org/synapse/issues/5196))
- Stick an expiration date to any registered user missing one at startup if account validity is enabled. ([\#5204](https://github.com/matrix-org/synapse/issues/5204))
- Add experimental support for relations (aka reactions and edits). ([\#5209](https://github.com/matrix-org/synapse/issues/5209), [\#5211](https://github.com/matrix-org/synapse/issues/5211), [\#5203](https://github.com/matrix-org/synapse/issues/5203), [\#5212](https://github.com/matrix-org/synapse/issues/5212))
- Add a room version 4 which uses a new event ID format, as per [MSC2002](https://github.com/matrix-org/matrix-doc/pull/2002). ([\#5210](https://github.com/matrix-org/synapse/issues/5210), [\#5217](https://github.com/matrix-org/synapse/issues/5217))
Bugfixes
--------
- Fix image orientation when generating thumbnails (needs pillow>=4.3.0). Contributed by Pau Rodriguez-Estivill. ([\#5039](https://github.com/matrix-org/synapse/issues/5039))
- Exclude soft-failed events from forward-extremity candidates: fixes "No forward extremities left!" error. ([\#5146](https://github.com/matrix-org/synapse/issues/5146))
- Re-order stages in registration flows such that msisdn and email verification are done last. ([\#5174](https://github.com/matrix-org/synapse/issues/5174))
- Fix a bug where the register endpoint would fail with M_THREEPID_IN_USE instead of returning an account previously registered in the same session. ([\#5187](https://github.com/matrix-org/synapse/issues/5187))
- Prevent registration for user ids that are too long to fit into a state key. Contributed by Reid Anderson. ([\#5198](https://github.com/matrix-org/synapse/issues/5198))
- Fix incompatibility between ACME support and Python 3.5.2. ([\#5218](https://github.com/matrix-org/synapse/issues/5218))
- Fix error handling for rooms whose versions are unknown. ([\#5219](https://github.com/matrix-org/synapse/issues/5219))
Internal Changes
----------------
- Make /sync attempt to return device updates for both joined and invited users. Note that this doesn't currently work correctly due to other bugs. ([\#3484](https://github.com/matrix-org/synapse/issues/3484))
- Update tests to consistently be configured via the same code that is used when loading from configuration files. ([\#5171](https://github.com/matrix-org/synapse/issues/5171), [\#5185](https://github.com/matrix-org/synapse/issues/5185))
- Allow client event serialization to be async. ([\#5183](https://github.com/matrix-org/synapse/issues/5183))
- Expose DataStore._get_events as get_events_as_list. ([\#5184](https://github.com/matrix-org/synapse/issues/5184))
- Make generating SQL bounds for pagination generic. ([\#5191](https://github.com/matrix-org/synapse/issues/5191))
- Stop telling people to install the optional dependencies by default. ([\#5197](https://github.com/matrix-org/synapse/issues/5197))
Synapse 0.99.4 (2019-05-15)
===========================
No significant changes.
Synapse 0.99.4rc1 (2019-05-13)
==============================
Features
--------
- Add systemd-python to the optional dependencies to enable logging to the systemd journal. Install with `pip install matrix-synapse[systemd]`. ([\#4339](https://github.com/matrix-org/synapse/issues/4339))
- Add a default .m.rule.tombstone push rule. ([\#4867](https://github.com/matrix-org/synapse/issues/4867))
- Add ability for password provider modules to bind email addresses to users upon registration. ([\#4947](https://github.com/matrix-org/synapse/issues/4947))
- Implementation of [MSC1711](https://github.com/matrix-org/matrix-doc/pull/1711) including config options for requiring valid TLS certificates for federation traffic, the ability to disable TLS validation for specific domains, and the ability to specify your own list of CA certificates. ([\#4967](https://github.com/matrix-org/synapse/issues/4967))
- Remove presence list support as per MSC 1819. ([\#4989](https://github.com/matrix-org/synapse/issues/4989))
- Reduce CPU usage starting pushers during start up. ([\#4991](https://github.com/matrix-org/synapse/issues/4991))
- Add a delete group admin API. ([\#5002](https://github.com/matrix-org/synapse/issues/5002))
- Add config option to block users from looking up 3PIDs. ([\#5010](https://github.com/matrix-org/synapse/issues/5010))
- Add context to phonehome stats. ([\#5020](https://github.com/matrix-org/synapse/issues/5020))
- Configure the example systemd units to have a log identifier of `matrix-synapse`
instead of the executable name, `python`.
Contributed by Christoph Müller. ([\#5023](https://github.com/matrix-org/synapse/issues/5023))
- Add support for handling `/versions`, `/voip` and `/push_rules` client endpoints to client_reader worker. ([\#5063](https://github.com/matrix-org/synapse/issues/5063), [\#5065](https://github.com/matrix-org/synapse/issues/5065), [\#5070](https://github.com/matrix-org/synapse/issues/5070))
- Add a configuration option to require authentication on /publicRooms and /profile endpoints. ([\#5083](https://github.com/matrix-org/synapse/issues/5083))
- Move admin APIs to `/_synapse/admin/v1`. (The old paths are retained for backwards-compatibility, for now). ([\#5119](https://github.com/matrix-org/synapse/issues/5119))
- Implement an admin API for sending server notices. Many thanks to @krombel who provided a foundation for this work. ([\#5121](https://github.com/matrix-org/synapse/issues/5121), [\#5142](https://github.com/matrix-org/synapse/issues/5142))
Bugfixes
--------
- Avoid redundant URL encoding of redirect URL for SSO login in the fallback login page. Fixes a regression introduced in [#4220](https://github.com/matrix-org/synapse/pull/4220). Contributed by Marcel Fabian Krüger ("[zaugin](https://github.com/zauguin)"). ([\#4555](https://github.com/matrix-org/synapse/issues/4555))
- Fix bug where presence updates were sent to all servers in a room when a new server joined, rather than to just the new server. ([\#4942](https://github.com/matrix-org/synapse/issues/4942), [\#5103](https://github.com/matrix-org/synapse/issues/5103))
- Fix sync bug which made accepting invites unreliable in worker-mode synapses. ([\#4955](https://github.com/matrix-org/synapse/issues/4955), [\#4956](https://github.com/matrix-org/synapse/issues/4956))
- start.sh: Fix the --no-rate-limit option for messages and make it bypass rate limit on registration and login too. ([\#4981](https://github.com/matrix-org/synapse/issues/4981))
- Transfer related groups on room upgrade. ([\#4990](https://github.com/matrix-org/synapse/issues/4990))
- Prevent the ability to kick users from a room they aren't in. ([\#4999](https://github.com/matrix-org/synapse/issues/4999))
- Fix issue [\#4596](https://github.com/matrix-org/synapse/issues/4596) so synapse_port_db script works with --curses option on Python 3. Contributed by Anders Jensen-Waud <anders@jensenwaud.com>. ([\#5003](https://github.com/matrix-org/synapse/issues/5003))
- Clients timing out/disappearing while downloading from the media repository will now no longer log a spurious "Producer was not unregistered" message. ([\#5009](https://github.com/matrix-org/synapse/issues/5009))
- Fix "cannot import name execute_batch" error with postgres. ([\#5032](https://github.com/matrix-org/synapse/issues/5032))
- Fix disappearing exceptions in manhole. ([\#5035](https://github.com/matrix-org/synapse/issues/5035))
- Workaround bug in twisted where attempting too many concurrent DNS requests could cause it to hang due to running out of file descriptors. ([\#5037](https://github.com/matrix-org/synapse/issues/5037))
- Make sure we're not registering the same 3pid twice on registration. ([\#5071](https://github.com/matrix-org/synapse/issues/5071))
- Don't crash on lack of expiry templates. ([\#5077](https://github.com/matrix-org/synapse/issues/5077))
- Fix the ratelimiting on third party invites. ([\#5104](https://github.com/matrix-org/synapse/issues/5104))
- Add some missing limitations to room alias creation. ([\#5124](https://github.com/matrix-org/synapse/issues/5124), [\#5128](https://github.com/matrix-org/synapse/issues/5128))
- Limit the number of EDUs in transactions to 100 as expected by synapse. Thanks to @superboum for this work! ([\#5138](https://github.com/matrix-org/synapse/issues/5138))
- Add test to verify threepid auth check added in [\#4435](https://github.com/matrix-org/synapse/issues/4435). ([\#4474](https://github.com/matrix-org/synapse/issues/4474))
- Run `black` to clean up formatting on `synapse/storage/roommember.py` and `synapse/storage/events.py`. ([\#4959](https://github.com/matrix-org/synapse/issues/4959))
- Remove log line for password via the admin API. ([\#4965](https://github.com/matrix-org/synapse/issues/4965))
- Fix typo in TLS filenames in docker/README.md. Also add the '-p' commandline option to the 'docker run' example. Contributed by Jurrie Overgoor. ([\#4968](https://github.com/matrix-org/synapse/issues/4968))
- Refactor room version definitions. ([\#4969](https://github.com/matrix-org/synapse/issues/4969))
- Reduce log level of .well-known/matrix/client responses. ([\#4972](https://github.com/matrix-org/synapse/issues/4972))
- Add `config.signing_key_path` that can be read by `synapse.config` utility. ([\#4974](https://github.com/matrix-org/synapse/issues/4974))
- Track which identity server is used when binding a threepid and use that for unbinding, as per MSC1915. ([\#4982](https://github.com/matrix-org/synapse/issues/4982))
- Rewrite KeyringTestCase as a HomeserverTestCase. ([\#4985](https://github.com/matrix-org/synapse/issues/4985))
- README updates: Corrected the default POSTGRES_USER. Added port forwarding hint in TLS section. ([\#4987](https://github.com/matrix-org/synapse/issues/4987))
- Remove a number of unused tables from the database schema. ([\#4992](https://github.com/matrix-org/synapse/issues/4992), [\#5028](https://github.com/matrix-org/synapse/issues/5028), [\#5033](https://github.com/matrix-org/synapse/issues/5033))
- Run `black` on the remainder of `synapse/storage/`. ([\#4996](https://github.com/matrix-org/synapse/issues/4996))
- Fix grammar in get_current_users_in_room and give it a docstring. ([\#4998](https://github.com/matrix-org/synapse/issues/4998))
- Clean up some code in the server-key Keyring. ([\#5001](https://github.com/matrix-org/synapse/issues/5001))
- Convert SYNAPSE_NO_TLS Docker variable to boolean for user friendliness. Contributed by Gabriel Eckerson. ([\#5005](https://github.com/matrix-org/synapse/issues/5005))
- Store the notary server name correctly in server_keys_json. ([\#5024](https://github.com/matrix-org/synapse/issues/5024))
- Rewrite Datastore.get_server_verify_keys to reduce the number of database transactions. ([\#5030](https://github.com/matrix-org/synapse/issues/5030))
- Remove extraneous period from copyright headers. ([\#5046](https://github.com/matrix-org/synapse/issues/5046))
- Update documentation for where to get Synapse packages. ([\#5067](https://github.com/matrix-org/synapse/issues/5067))
- Add workarounds for pep-517 install errors. ([\#5098](https://github.com/matrix-org/synapse/issues/5098))
- Improve logging when event-signature checks fail. ([\#5100](https://github.com/matrix-org/synapse/issues/5100))
- Factor out an "assert_requester_is_admin" function. ([\#5120](https://github.com/matrix-org/synapse/issues/5120))
- Remove the requirement to authenticate for /admin/server_version. ([\#5122](https://github.com/matrix-org/synapse/issues/5122))
- Prevent an exception from being raised in a IResolutionReceiver and use a more generic error message for blacklisted URL previews. ([\#5155](https://github.com/matrix-org/synapse/issues/5155))
- Run `black` on the tests directory. ([\#5170](https://github.com/matrix-org/synapse/issues/5170))
- Fix CI after new release of isort. ([\#5179](https://github.com/matrix-org/synapse/issues/5179))
- Fix bogus imports in unit tests. ([\#5154](https://github.com/matrix-org/synapse/issues/5154))
Synapse 0.99.3.2 (2019-05-03)
=============================
Internal Changes
----------------
- Ensure that we have `urllib3`<1.25,toresolveincompatibilitywith`requests`.([\#5135](https://github.com/matrix-org/synapse/issues/5135))
Synapse 0.99.3.1 (2019-05-03)
=============================
Security update
---------------
This release includes two security fixes:
- Switch to using a cryptographically-secure random number generator for token strings, ensuring they cannot be predicted by an attacker. Thanks to @opnsec for identifying and responsibly disclosing this issue! ([\#5133](https://github.com/matrix-org/synapse/issues/5133))
- Blacklist 0.0.0.0 and :: by default for URL previews. Thanks to @opnsec for identifying and responsibly disclosing this issue too! ([\#5134](https://github.com/matrix-org/synapse/issues/5134))
Synapse 0.99.3 (2019-04-01)
===========================
No significant changes.
Synapse 0.99.3rc1 (2019-03-27)
==============================
Features
--------
- The user directory has been rewritten to make it faster, with less chance of falling behind on a large server. ([\#4537](https://github.com/matrix-org/synapse/issues/4537), [\#4846](https://github.com/matrix-org/synapse/issues/4846), [\#4864](https://github.com/matrix-org/synapse/issues/4864), [\#4887](https://github.com/matrix-org/synapse/issues/4887), [\#4900](https://github.com/matrix-org/synapse/issues/4900), [\#4944](https://github.com/matrix-org/synapse/issues/4944))
- Add configurable rate limiting to the /register endpoint. ([\#4735](https://github.com/matrix-org/synapse/issues/4735), [\#4804](https://github.com/matrix-org/synapse/issues/4804))
- Move server key queries to federation reader. ([\#4757](https://github.com/matrix-org/synapse/issues/4757))
- Add support for /account/3pid REST endpoint to client_reader worker. ([\#4759](https://github.com/matrix-org/synapse/issues/4759))
- Add an endpoint to the admin API for querying the server version. Contributed by Joseph Weston. ([\#4772](https://github.com/matrix-org/synapse/issues/4772))
- Include a default configuration file in the 'docs' directory. ([\#4791](https://github.com/matrix-org/synapse/issues/4791), [\#4801](https://github.com/matrix-org/synapse/issues/4801))
- Synapse is now permissive about trailing slashes on some of its federation endpoints, allowing zero or more to be present. ([\#4793](https://github.com/matrix-org/synapse/issues/4793))
- Add support for /keys/query and /keys/changes REST endpoints to client_reader worker. ([\#4796](https://github.com/matrix-org/synapse/issues/4796))
- Add checks to incoming events over federation for events evading auth (aka "soft fail"). ([\#4814](https://github.com/matrix-org/synapse/issues/4814))
- Add configurable rate limiting to the /login endpoint. ([\#4821](https://github.com/matrix-org/synapse/issues/4821), [\#4865](https://github.com/matrix-org/synapse/issues/4865))
- Remove trailing slashes from certain outbound federation requests. Retry if receiving a 404. Context: [\#3622](https://github.com/matrix-org/synapse/issues/3622). ([\#4840](https://github.com/matrix-org/synapse/issues/4840))
- Allow passing --daemonize flags to workers in the same way as with master. ([\#4853](https://github.com/matrix-org/synapse/issues/4853))
- Batch up outgoing read-receipts to reduce federation traffic. ([\#4890](https://github.com/matrix-org/synapse/issues/4890), [\#4927](https://github.com/matrix-org/synapse/issues/4927))
- Add option to disable searching the user directory. ([\#4895](https://github.com/matrix-org/synapse/issues/4895))
- Add option to disable searching of local and remote public room lists. ([\#4896](https://github.com/matrix-org/synapse/issues/4896))
- Add ability for password providers to login/register a user via 3PID (email, phone). ([\#4931](https://github.com/matrix-org/synapse/issues/4931))
Bugfixes
--------
- Fix a bug where media with spaces in the name would get a corrupted name. ([\#2090](https://github.com/matrix-org/synapse/issues/2090))
- Fix attempting to paginate in rooms where server cannot see any events, to avoid unnecessarily pulling in lots of redacted events. ([\#4699](https://github.com/matrix-org/synapse/issues/4699))
- 'event_id' is now a required parameter in federated state requests, as per the matrix spec. ([\#4740](https://github.com/matrix-org/synapse/issues/4740))
- Fix tightloop over connecting to replication server. ([\#4749](https://github.com/matrix-org/synapse/issues/4749))
- Fix parsing of Content-Disposition headers on remote media requests and URL previews. ([\#4763](https://github.com/matrix-org/synapse/issues/4763))
- Fix incorrect log about not persisting duplicate state event. ([\#4776](https://github.com/matrix-org/synapse/issues/4776))
- Fix v4v6 option in HAProxy example config. Contributed by Flakebi. ([\#4790](https://github.com/matrix-org/synapse/issues/4790))
- Handle batch updates in worker replication protocol. ([\#4792](https://github.com/matrix-org/synapse/issues/4792))
- Fix bug where we didn't correctly throttle sending of USER_IP commands over replication. ([\#4818](https://github.com/matrix-org/synapse/issues/4818))
- Fix potential race in handling missing updates in device list updates. ([\#4829](https://github.com/matrix-org/synapse/issues/4829))
- Fix bug where synapse expected an un-specced `prev_state` field on state events. ([\#4837](https://github.com/matrix-org/synapse/issues/4837))
- Transfer a user's notification settings (push rules) on room upgrade. ([\#4838](https://github.com/matrix-org/synapse/issues/4838))
- Fix a bug where hs_disabled_message was sometimes not correctly enforced. ([\#4888](https://github.com/matrix-org/synapse/issues/4888))
- Fix bug in shutdown room admin API where it would fail if a user in the room hadn't consented to the privacy policy. ([\#4904](https://github.com/matrix-org/synapse/issues/4904))
- Fix bug where blocked world-readable rooms were still peekable. ([\#4908](https://github.com/matrix-org/synapse/issues/4908))
Internal Changes
----------------
- Add a systemd setup that supports synapse workers. Contributed by Luca Corbatto. ([\#4662](https://github.com/matrix-org/synapse/issues/4662))
- Change from TravisCI to Buildkite for CI. ([\#4752](https://github.com/matrix-org/synapse/issues/4752))
- When presence is disabled don't send over replication. ([\#4757](https://github.com/matrix-org/synapse/issues/4757))
- Minor docstring fixes for MatrixFederationAgent. ([\#4765](https://github.com/matrix-org/synapse/issues/4765))
- Optimise EDU transmission for the federation_sender worker. ([\#4770](https://github.com/matrix-org/synapse/issues/4770))
- Update test_typing to use HomeserverTestCase. ([\#4771](https://github.com/matrix-org/synapse/issues/4771))
- Update URLs for riot.im icons and logos in the default notification templates. ([\#4779](https://github.com/matrix-org/synapse/issues/4779))
- Removed unnecessary $ from some federation endpoint path regexes. ([\#4794](https://github.com/matrix-org/synapse/issues/4794))
- Remove link to deleted title in README. ([\#4795](https://github.com/matrix-org/synapse/issues/4795))
- Clean up read-receipt handling. ([\#4797](https://github.com/matrix-org/synapse/issues/4797))
- Add some debug about processing read receipts. ([\#4798](https://github.com/matrix-org/synapse/issues/4798))
- Clean up some replication code. ([\#4799](https://github.com/matrix-org/synapse/issues/4799))
- Add some docstrings. ([\#4815](https://github.com/matrix-org/synapse/issues/4815))
- Add debug logger to try and track down [\#4422](https://github.com/matrix-org/synapse/issues/4422). ([\#4816](https://github.com/matrix-org/synapse/issues/4816))
- Make shutdown API send explanation message to room after users have been forced joined. ([\#4817](https://github.com/matrix-org/synapse/issues/4817))
- Add some debug logging for device list updates to help with [\#4828](https://github.com/matrix-org/synapse/issues/4828). ([\#4828](https://github.com/matrix-org/synapse/issues/4828))
- Improve federation documentation, specifically .well-known support. Many thanks to @vaab. ([\#4832](https://github.com/matrix-org/synapse/issues/4832))
- Disable captcha registration by default in unit tests. ([\#4839](https://github.com/matrix-org/synapse/issues/4839))
- Add stuff back to the .gitignore. ([\#4843](https://github.com/matrix-org/synapse/issues/4843))
- Clarify what registration_shared_secret allows for. ([\#4844](https://github.com/matrix-org/synapse/issues/4844))
- Correctly log expected errors when fetching server keys. ([\#4847](https://github.com/matrix-org/synapse/issues/4847))
- Update install docs to explicitly state a full-chain (not just the top-level) TLS certificate must be provided to Synapse. This caused some people's Synapse ports to appear correct in a browser but still (rightfully so) upset the federation tester. ([\#4849](https://github.com/matrix-org/synapse/issues/4849))
- Move client read-receipt processing to federation sender worker. ([\#4852](https://github.com/matrix-org/synapse/issues/4852))
- Added an HAProxy example in the reverse proxy documentation. Contributed by Benoît S. (“Benpro”). ([\#4541](https://github.com/matrix-org/synapse/issues/4541))
- Transfer bans on room upgrade. ([\#4642](https://github.com/matrix-org/synapse/issues/4642))
- Add configurable room list publishing rules. ([\#4647](https://github.com/matrix-org/synapse/issues/4647))
- Support .well-known delegation when issuing certificates through ACME. ([\#4652](https://github.com/matrix-org/synapse/issues/4652))
- Allow registration and login to be handled by a worker instance. ([\#4666](https://github.com/matrix-org/synapse/issues/4666), [\#4670](https://github.com/matrix-org/synapse/issues/4670), [\#4682](https://github.com/matrix-org/synapse/issues/4682))
- Reduce the overhead of creating outbound federation connections over TLS by caching the TLS client options. ([\#4674](https://github.com/matrix-org/synapse/issues/4674))
- Add prometheus metrics for number of outgoing EDUs, by type. ([\#4695](https://github.com/matrix-org/synapse/issues/4695))
- Return correct error code when inviting a remote user to a room whose homeserver does not support the room version. ([\#4721](https://github.com/matrix-org/synapse/issues/4721))
- Prevent showing rooms to other servers that were set to not federate. ([\#4746](https://github.com/matrix-org/synapse/issues/4746))
Bugfixes
--------
- Fix possible exception when paginating. ([\#4263](https://github.com/matrix-org/synapse/issues/4263))
- The dependency checker now correctly reports a version mismatch for optional
dependencies, instead of reporting the dependency missing. ([\#4450](https://github.com/matrix-org/synapse/issues/4450))
- Set CORS headers on .well-known requests. ([\#4651](https://github.com/matrix-org/synapse/issues/4651))
- Fix kicking guest users on guest access revocation in worker mode. ([\#4667](https://github.com/matrix-org/synapse/issues/4667))
- Fix an issue in the database migration script where the
`e2e_room_keys.is_verified` column wasn't considered as
a boolean. ([\#4680](https://github.com/matrix-org/synapse/issues/4680))
- Fix TaskStopped exceptions in logs when outbound requests time out. ([\#4690](https://github.com/matrix-org/synapse/issues/4690))
- Fix ACME config for python 2. ([\#4717](https://github.com/matrix-org/synapse/issues/4717))
- Fix paginating over federation persisting incorrect state. ([\#4718](https://github.com/matrix-org/synapse/issues/4718))
Internal Changes
----------------
- Run `black` to reformat user directory code. ([\#4635](https://github.com/matrix-org/synapse/issues/4635))
- Reduce number of exceptions we log. ([\#4643](https://github.com/matrix-org/synapse/issues/4643), [\#4668](https://github.com/matrix-org/synapse/issues/4668))
- Introduce upsert batching functionality in the database layer. ([\#4644](https://github.com/matrix-org/synapse/issues/4644))
- Fix various spelling mistakes. ([\#4657](https://github.com/matrix-org/synapse/issues/4657))
- Test against Postgres 9.5 as well as 9.4. ([\#4676](https://github.com/matrix-org/synapse/issues/4676))
- Run unit tests against python 3.7. ([\#4677](https://github.com/matrix-org/synapse/issues/4677))
- Attempt to clarify installation instructions/config. ([\#4681](https://github.com/matrix-org/synapse/issues/4681))
- Clean up gitignores. ([\#4688](https://github.com/matrix-org/synapse/issues/4688))
- Minor tweaks to acme docs. ([\#4689](https://github.com/matrix-org/synapse/issues/4689))
- Improve the logging in the pusher process. ([\#4691](https://github.com/matrix-org/synapse/issues/4691))
- Better checks on newsfragments. ([\#4698](https://github.com/matrix-org/synapse/issues/4698), [\#4750](https://github.com/matrix-org/synapse/issues/4750))
- Avoid some redundant work when processing read receipts. ([\#4706](https://github.com/matrix-org/synapse/issues/4706))
- Run `push_receipts_to_remotes` as background job. ([\#4707](https://github.com/matrix-org/synapse/issues/4707))
- Add prometheus metrics for number of badge update pushes. ([\#4709](https://github.com/matrix-org/synapse/issues/4709))
- Reduce pusher logging on startup ([\#4716](https://github.com/matrix-org/synapse/issues/4716))
- Don't log exceptions when failing to fetch remote server keys. ([\#4722](https://github.com/matrix-org/synapse/issues/4722))
- Correctly proxy exception in frontend_proxy worker. ([\#4723](https://github.com/matrix-org/synapse/issues/4723))
- Add database version to phonehome stats. ([\#4753](https://github.com/matrix-org/synapse/issues/4753))
Synapse 0.99.1.1 (2019-02-14)
=============================
Bugfixes
--------
- Fix "TypeError: '>' not supported" when starting without an existing certificate.
Fix a bug where an existing certificate would be reprovisoned every day. ([\#4648](https://github.com/matrix-org/synapse/issues/4648))
Synapse 0.99.1 (2019-02-14)
===========================
Features
--------
- Include m.room.encryption on invites by default ([\#3902](https://github.com/matrix-org/synapse/issues/3902))
- Federation OpenID listener resource can now be activated even if federation is disabled ([\#4420](https://github.com/matrix-org/synapse/issues/4420))
- Synapse's ACME support will now correctly reprovision a certificate that approaches its expiry while Synapse is running. ([\#4522](https://github.com/matrix-org/synapse/issues/4522))
- Add ability to update backup versions ([\#4580](https://github.com/matrix-org/synapse/issues/4580))
- Allow the "unavailable" presence status for /sync.
This change makes Synapse compliant with r0.4.0 of the Client-Server specification. ([\#4592](https://github.com/matrix-org/synapse/issues/4592))
- There is no longer any need to specify `no_tls`: it is inferred from the absence of TLS listeners ([\#4613](https://github.com/matrix-org/synapse/issues/4613), [\#4615](https://github.com/matrix-org/synapse/issues/4615), [\#4617](https://github.com/matrix-org/synapse/issues/4617), [\#4636](https://github.com/matrix-org/synapse/issues/4636))
- The default configuration no longer requires TLS certificates. ([\#4614](https://github.com/matrix-org/synapse/issues/4614))
Bugfixes
--------
- Copy over room federation ability on room upgrade. ([\#4530](https://github.com/matrix-org/synapse/issues/4530))
- Fix noisy "twisted.internet.task.TaskStopped" errors in logs ([\#4546](https://github.com/matrix-org/synapse/issues/4546))
- Synapse is now tolerant of the `tls_fingerprints` option being None or not specified. ([\#4589](https://github.com/matrix-org/synapse/issues/4589))
- Fix 'no unique or exclusion constraint' error ([\#4591](https://github.com/matrix-org/synapse/issues/4591))
- Transfer Server ACLs on room upgrade. ([\#4608](https://github.com/matrix-org/synapse/issues/4608))
- Fix failure to start when not TLS certificate was given even if TLS was disabled. ([\#4618](https://github.com/matrix-org/synapse/issues/4618))
- Fix self-signed cert notice from generate-config. ([\#4625](https://github.com/matrix-org/synapse/issues/4625))
- Change the user directory state query to use a filtered call to the db instead of a generic one. ([\#4462](https://github.com/matrix-org/synapse/issues/4462))
- Reject federation transactions if they include more than 50 PDUs or 100 EDUs. ([\#4513](https://github.com/matrix-org/synapse/issues/4513))
- Reduce duplication of ``synapse.app`` code. ([\#4567](https://github.com/matrix-org/synapse/issues/4567))
- Fix docker upload job to push -py2 images. ([\#4576](https://github.com/matrix-org/synapse/issues/4576))
- Add port configuration information to ACME instructions. ([\#4578](https://github.com/matrix-org/synapse/issues/4578))
- Update MSC1711 FAQ to calrify .well-known usage ([\#4584](https://github.com/matrix-org/synapse/issues/4584))
- Clean up default listener configuration ([\#4586](https://github.com/matrix-org/synapse/issues/4586))
- Clarifications for reverse proxy docs ([\#4607](https://github.com/matrix-org/synapse/issues/4607))
- Move ClientTLSOptionsFactory init out of `refresh_certificates` ([\#4611](https://github.com/matrix-org/synapse/issues/4611))
- Fail cleanly if listener config lacks a 'port' ([\#4616](https://github.com/matrix-org/synapse/issues/4616))
- Remove redundant entries from docker config ([\#4619](https://github.com/matrix-org/synapse/issues/4619))
Synapse v0.99.x is a precursor to the upcoming Synapse v1.0 release. It contains foundational changes to room architecture and the federation security model necessary to support the upcoming r0 release of the Server to Server API.
Features
--------
- Synapse's cipher string has been updated to require ECDH key exchange. Configuring and generating dh_params is no longer required, and they will be ignored. ([\#4229](https://github.com/matrix-org/synapse/issues/4229))
- Synapse can now automatically provision TLS certificates via ACME (the protocol used by CAs like Let's Encrypt). ([\#4384](https://github.com/matrix-org/synapse/issues/4384), [\#4492](https://github.com/matrix-org/synapse/issues/4492), [\#4525](https://github.com/matrix-org/synapse/issues/4525), [\#4572](https://github.com/matrix-org/synapse/issues/4572), [\#4564](https://github.com/matrix-org/synapse/issues/4564), [\#4566](https://github.com/matrix-org/synapse/issues/4566), [\#4547](https://github.com/matrix-org/synapse/issues/4547), [\#4557](https://github.com/matrix-org/synapse/issues/4557))
- Search now includes results from predecessor rooms after a room upgrade. ([\#4415](https://github.com/matrix-org/synapse/issues/4415))
- Config option to disable requesting MSISDN on registration. ([\#4423](https://github.com/matrix-org/synapse/issues/4423))
- Add a metric for tracking event stream position of the user directory. ([\#4445](https://github.com/matrix-org/synapse/issues/4445))
- Support exposing server capabilities in CS API (MSC1753, MSC1804) ([\#4472](https://github.com/matrix-org/synapse/issues/4472), [81b7e7eed](https://github.com/matrix-org/synapse/commit/81b7e7eed323f55d6550e7a270a9dc2c4c7b0fe0)))
- Add support for room version 3 ([\#4483](https://github.com/matrix-org/synapse/issues/4483), [\#4499](https://github.com/matrix-org/synapse/issues/4499), [\#4515](https://github.com/matrix-org/synapse/issues/4515), [\#4523](https://github.com/matrix-org/synapse/issues/4523), [\#4535](https://github.com/matrix-org/synapse/issues/4535))
- Synapse will now reload TLS certificates from disk upon SIGHUP. ([\#4495](https://github.com/matrix-org/synapse/issues/4495), [\#4524](https://github.com/matrix-org/synapse/issues/4524))
- The matrixdotorg/synapse Docker images now use Python 3 by default. ([\#4558](https://github.com/matrix-org/synapse/issues/4558))
Bugfixes
--------
- Prevent users with access tokens predating the introduction of device IDs from creating spurious entries in the user_ips table. ([\#4369](https://github.com/matrix-org/synapse/issues/4369))
- Fix typo in ALL_USER_TYPES definition to ensure type is a tuple ([\#4392](https://github.com/matrix-org/synapse/issues/4392))
- Fix high CPU usage due to remote devicelist updates ([\#4397](https://github.com/matrix-org/synapse/issues/4397))
- Fix potential bug where creating or joining a room could fail ([\#4404](https://github.com/matrix-org/synapse/issues/4404))
- Fix bug when rejecting remote invites ([\#4405](https://github.com/matrix-org/synapse/issues/4405), [\#4527](https://github.com/matrix-org/synapse/issues/4527))
- Fix incorrect logcontexts after a Deferred was cancelled ([\#4407](https://github.com/matrix-org/synapse/issues/4407))
- Ensure encrypted room state is persisted across room upgrades. ([\#4411](https://github.com/matrix-org/synapse/issues/4411))
- Copy over whether a room is a direct message and any associated room tags on room upgrade. ([\#4412](https://github.com/matrix-org/synapse/issues/4412))
- Fix None guard in calling config.server.is_threepid_reserved ([\#4435](https://github.com/matrix-org/synapse/issues/4435))
- Don't send IP addresses as SNI ([\#4452](https://github.com/matrix-org/synapse/issues/4452))
- Fix UnboundLocalError in post_urlencoded_get_json ([\#4460](https://github.com/matrix-org/synapse/issues/4460))
- Add a timeout to filtered room directory queries. ([\#4461](https://github.com/matrix-org/synapse/issues/4461))
- Workaround for login error when using both LDAP and internal authentication. ([\#4486](https://github.com/matrix-org/synapse/issues/4486))
- Fix a bug where setting a relative consent directory path would cause a crash. ([\#4512](https://github.com/matrix-org/synapse/issues/4512))
Deprecations and Removals
-------------------------
- Synapse no longer generates self-signed TLS certificates when generating a configuration file. ([\#4509](https://github.com/matrix-org/synapse/issues/4509))
- Synapse will now take advantage of native UPSERT functionality in PostgreSQL 9.5+ and SQLite 3.24+. ([\#4306](https://github.com/matrix-org/synapse/issues/4306), [\#4459](https://github.com/matrix-org/synapse/issues/4459), [\#4466](https://github.com/matrix-org/synapse/issues/4466), [\#4471](https://github.com/matrix-org/synapse/issues/4471), [\#4477](https://github.com/matrix-org/synapse/issues/4477), [\#4505](https://github.com/matrix-org/synapse/issues/4505))
- Update README to use the new virtualenv everywhere ([\#4342](https://github.com/matrix-org/synapse/issues/4342))
- Add better logging for unexpected errors while sending transactions ([\#4368](https://github.com/matrix-org/synapse/issues/4368))
- Apply a unique index to the user_ips table, preventing duplicates. ([\#4370](https://github.com/matrix-org/synapse/issues/4370), [\#4432](https://github.com/matrix-org/synapse/issues/4432), [\#4434](https://github.com/matrix-org/synapse/issues/4434))
- Silence travis-ci build warnings by removing non-functional python3.6 ([\#4377](https://github.com/matrix-org/synapse/issues/4377))
- Fix a comment in the generated config file ([\#4387](https://github.com/matrix-org/synapse/issues/4387))
- Add ground work for implementing future federation API versions ([\#4390](https://github.com/matrix-org/synapse/issues/4390))
- Update dependencies on msgpack and pymacaroons to use the up-to-date packages. ([\#4399](https://github.com/matrix-org/synapse/issues/4399))
- Tweak codecov settings to make them less loud. ([\#4400](https://github.com/matrix-org/synapse/issues/4400))
- Implement server support for MSC1794 - Federation v2 Invite API ([\#4402](https://github.com/matrix-org/synapse/issues/4402))
- debian package: symlink to explicit python version ([\#4433](https://github.com/matrix-org/synapse/issues/4433))
- Add infrastructure to support different event formats ([\#4437](https://github.com/matrix-org/synapse/issues/4437), [\#4447](https://github.com/matrix-org/synapse/issues/4447), [\#4448](https://github.com/matrix-org/synapse/issues/4448), [\#4470](https://github.com/matrix-org/synapse/issues/4470), [\#4481](https://github.com/matrix-org/synapse/issues/4481), [\#4482](https://github.com/matrix-org/synapse/issues/4482), [\#4493](https://github.com/matrix-org/synapse/issues/4493), [\#4494](https://github.com/matrix-org/synapse/issues/4494), [\#4496](https://github.com/matrix-org/synapse/issues/4496), [\#4510](https://github.com/matrix-org/synapse/issues/4510), [\#4514](https://github.com/matrix-org/synapse/issues/4514))
- Generate the debian config during build ([\#4444](https://github.com/matrix-org/synapse/issues/4444))
- Clarify documentation for the `public_baseurl` config param ([\#4458](https://github.com/matrix-org/synapse/issues/4458), [\#4498](https://github.com/matrix-org/synapse/issues/4498))
- Fix quoting for allowed_local_3pids example config ([\#4476](https://github.com/matrix-org/synapse/issues/4476))
- Remove deprecated --process-dependency-links option from UPGRADE.rst ([\#4485](https://github.com/matrix-org/synapse/issues/4485))
- Make it possible to set the log level for tests via an environment variable ([\#4506](https://github.com/matrix-org/synapse/issues/4506))
- Reduce the log level of linearizer lock acquirement to DEBUG. ([\#4507](https://github.com/matrix-org/synapse/issues/4507))
- Fix code to comply with linting in PyFlakes 3.7.1. ([\#4519](https://github.com/matrix-org/synapse/issues/4519))
- Add some debug for membership syncing issues ([\#4538](https://github.com/matrix-org/synapse/issues/4538))
- Docker: only copy what we need to the build image ([\#4562](https://github.com/matrix-org/synapse/issues/4562))
Synapse 0.34.1.1 (2019-01-11)
=============================
This release fixes CVE-2019-5885 and is recommended for all users of Synapse 0.34.1.
This release is compatible with Python 2.7 and 3.5+. Python 3.7 is fully supported.
- Add better logging for unexpected errors while sending transactions ([\#4361](https://github.com/matrix-org/synapse/issues/4361), [\#4362](https://github.com/matrix-org/synapse/issues/4362))
Synapse 0.34.1rc1 (2019-01-08)
==============================
Features
--------
- Special-case a support user for use in verifying behaviour of a given server. The support user does not appear in user directory or monthly active user counts. ([\#4141](https://github.com/matrix-org/synapse/issues/4141), [\#4344](https://github.com/matrix-org/synapse/issues/4344))
- Support for serving .well-known files ([\#4262](https://github.com/matrix-org/synapse/issues/4262))
- SAML2 authentication: Initialise user display name from SAML2 data ([\#4272](https://github.com/matrix-org/synapse/issues/4272))
- Synapse can now have its conditional/extra dependencies installed by pip. This functionality can be used by using `pip install matrix-synapse[feature]`, where feature is a comma separated list with the possible values `email.enable_notifs`, `matrix-synapse-ldap3`, `postgres`, `resources.consent`, `saml2`, `url_preview`, and `test`. If you want to install all optional dependencies, you can use "all" instead. ([\#4298](https://github.com/matrix-org/synapse/issues/4298), [\#4325](https://github.com/matrix-org/synapse/issues/4325), [\#4327](https://github.com/matrix-org/synapse/issues/4327))
- Add routes for reading account data. ([\#4303](https://github.com/matrix-org/synapse/issues/4303))
- Add opt-in support for v2 rooms ([\#4307](https://github.com/matrix-org/synapse/issues/4307))
- Add a script to generate a clean config file ([\#4315](https://github.com/matrix-org/synapse/issues/4315))
- Return server data in /login response ([\#4319](https://github.com/matrix-org/synapse/issues/4319))
Bugfixes
--------
- Fix contains_url check to be consistent with other instances in code-base and check that value is an instance of string. ([\#3405](https://github.com/matrix-org/synapse/issues/3405))
- Fix CAS login when username is not valid in an MXID ([\#4264](https://github.com/matrix-org/synapse/issues/4264))
- Send CORS headers for /media/config ([\#4279](https://github.com/matrix-org/synapse/issues/4279))
- Add 'sandbox' to CSP for media reprository ([\#4284](https://github.com/matrix-org/synapse/issues/4284))
- Make the new landing page prettier. ([\#4294](https://github.com/matrix-org/synapse/issues/4294))
- Fix deleting E2E room keys when using old SQLite versions. ([\#4295](https://github.com/matrix-org/synapse/issues/4295))
- The metric synapse_admin_mau:current previously did not update when config.mau_stats_only was set to True ([\#4305](https://github.com/matrix-org/synapse/issues/4305))
- Fixed per-room account data filters ([\#4309](https://github.com/matrix-org/synapse/issues/4309))
- Fix indentation in default config ([\#4313](https://github.com/matrix-org/synapse/issues/4313))
- Fix test_metric.py compatibility with prometheus_client 0.5. Contributed by Maarten de Vries <maarten@de-vri.es>. ([\#4317](https://github.com/matrix-org/synapse/issues/4317))
- Avoid packaging _trial_temp directory in -py3 debian packages ([\#4326](https://github.com/matrix-org/synapse/issues/4326))
- Check jinja version for consent resource ([\#4327](https://github.com/matrix-org/synapse/issues/4327))
- fix NPE in /messages by checking if all events were filtered out ([\#4330](https://github.com/matrix-org/synapse/issues/4330))
- Fix `python -m synapse.config` on Python 3. ([\#4356](https://github.com/matrix-org/synapse/issues/4356))
Deprecations and Removals
-------------------------
- Remove the deprecated v1/register API on Python 2. It was never ported to Python 3. ([\#4334](https://github.com/matrix-org/synapse/issues/4334))
Internal Changes
----------------
- Getting URL previews of IP addresses no longer fails on Python 3. ([\#4215](https://github.com/matrix-org/synapse/issues/4215))
- drop undocumented dependency on dateutil ([\#4266](https://github.com/matrix-org/synapse/issues/4266))
- Update the example systemd config to use a virtualenv ([\#4273](https://github.com/matrix-org/synapse/issues/4273))
- Update link to kernel DCO guide ([\#4274](https://github.com/matrix-org/synapse/issues/4274))
- Make isort tox check print diff when it fails ([\#4283](https://github.com/matrix-org/synapse/issues/4283))
- Log room_id in Unknown room errors ([\#4297](https://github.com/matrix-org/synapse/issues/4297))
- Documentation improvements for coturn setup. Contributed by Krithin Sitaram. ([\#4333](https://github.com/matrix-org/synapse/issues/4333))
- Update pull request template to use absolute links ([\#4341](https://github.com/matrix-org/synapse/issues/4341))
- Update README to not lie about required restart when updating TLS certificates ([\#4343](https://github.com/matrix-org/synapse/issues/4343))
- Update debian packaging for compatibility with transitional package ([\#4349](https://github.com/matrix-org/synapse/issues/4349))
- Fix command hint to generate a config file when trying to start without a config file ([\#4353](https://github.com/matrix-org/synapse/issues/4353))
- Add better logging for unexpected errors while sending transactions ([\#4358](https://github.com/matrix-org/synapse/issues/4358))
Synapse 0.34.0 (2018-12-20)
===========================
Synapse 0.34.0 is the first release to fully support Python 3. Synapse will now
run on Python versions 3.5 or 3.6 (as well as 2.7). Support for Python 3.7
remains experimental.
We recommend upgrading to Python 3, but make sure to read the [upgrade
notes](docs/upgrade.md#upgrading-to-v0340) when doing so.
Features
--------
- Add 'sandbox' to CSP for media reprository ([\#4284](https://github.com/matrix-org/synapse/issues/4284))
- Make the new landing page prettier. ([\#4294](https://github.com/matrix-org/synapse/issues/4294))
- Fix deleting E2E room keys when using old SQLite versions. ([\#4295](https://github.com/matrix-org/synapse/issues/4295))
- Add a welcome page for the client API port. Credit to @krombel! ([\#4289](https://github.com/matrix-org/synapse/issues/4289))
- Remove Matrix console from the default distribution ([\#4290](https://github.com/matrix-org/synapse/issues/4290))
- Add option to track MAU stats (but not limit people) ([\#3830](https://github.com/matrix-org/synapse/issues/3830))
- Add an option to enable recording IPs for appservice users ([\#3831](https://github.com/matrix-org/synapse/issues/3831))
- Rename login type `m.login.cas` to `m.login.sso` ([\#4220](https://github.com/matrix-org/synapse/issues/4220))
- Add an option to disable search for homeservers that may not be interested in it. ([\#4230](https://github.com/matrix-org/synapse/issues/4230))
Bugfixes
--------
- Pushrules can now again be made with non-ASCII rule IDs. ([\#4165](https://github.com/matrix-org/synapse/issues/4165))
- The media repository now no longer fails to decode UTF-8 filenames when downloading remote media. ([\#4176](https://github.com/matrix-org/synapse/issues/4176))
- URL previews now correctly decode non-UTF-8 text if the header contains a `<meta http-equiv="Content-Type"` header. ([\#4183](https://github.com/matrix-org/synapse/issues/4183))
- Fix an issue where public consent URLs had two slashes. ([\#4192](https://github.com/matrix-org/synapse/issues/4192))
- Fallback auth now accepts the session parameter on Python 3. ([\#4197](https://github.com/matrix-org/synapse/issues/4197))
- Remove riot.im from the list of trusted Identity Servers in the default configuration ([\#4207](https://github.com/matrix-org/synapse/issues/4207))
- fix start up failure when mau_limit_reserved_threepids set and db is postgres ([\#4211](https://github.com/matrix-org/synapse/issues/4211))
- Fix auto join failures for servers that require user consent ([\#4223](https://github.com/matrix-org/synapse/issues/4223))
- Fix exception caused by non-ascii event IDs ([\#4241](https://github.com/matrix-org/synapse/issues/4241))
- Pushers can now be unsubscribed from on Python 3. ([\#4250](https://github.com/matrix-org/synapse/issues/4250))
- Fix UnicodeDecodeError when postgres is configured to give non-English errors ([\#4253](https://github.com/matrix-org/synapse/issues/4253))
Internal Changes
----------------
- Debian packages utilising a virtualenv with bundled dependencies can now be built. ([\#4212](https://github.com/matrix-org/synapse/issues/4212))
- Disable pager when running git-show in CI ([\#4291](https://github.com/matrix-org/synapse/issues/4291))
- A coveragerc file has been added. ([\#4180](https://github.com/matrix-org/synapse/issues/4180))
- Add a GitHub pull request template and add multiple issue templates ([\#4182](https://github.com/matrix-org/synapse/issues/4182))
- Update README to reflect the fact that [\#1491](https://github.com/matrix-org/synapse/issues/1491) is fixed ([\#4188](https://github.com/matrix-org/synapse/issues/4188))
- Run the AS senders as background processes to fix warnings ([\#4189](https://github.com/matrix-org/synapse/issues/4189))
- Add some diagnostics to the tests to detect logcontext problems ([\#4190](https://github.com/matrix-org/synapse/issues/4190))
- Add missing `jpeg` package prerequisite for OpenBSD in README. ([\#4193](https://github.com/matrix-org/synapse/issues/4193))
- Add a note saying you need to manually reclaim disk space after using the Purge History API ([\#4200](https://github.com/matrix-org/synapse/issues/4200))
- More logcontext checking in unittests ([\#4205](https://github.com/matrix-org/synapse/issues/4205))
- Ignore `__pycache__` directories in the database schema folder ([\#4214](https://github.com/matrix-org/synapse/issues/4214))
- Add note to UPGRADE.rst about removing riot.im from list of trusted identity servers ([\#4224](https://github.com/matrix-org/synapse/issues/4224))
- Added automated coverage reporting to CI. ([\#4225](https://github.com/matrix-org/synapse/issues/4225))
- Garbage-collect after each unit test to fix logcontext leaks ([\#4227](https://github.com/matrix-org/synapse/issues/4227))
- add more detail to logging regarding "More than one row matched" error ([\#4234](https://github.com/matrix-org/synapse/issues/4234))
- Drop sent_transactions table ([\#4244](https://github.com/matrix-org/synapse/issues/4244))
- Add a basic .editorconfig ([\#4257](https://github.com/matrix-org/synapse/issues/4257))
- Update README.rst and UPGRADE.rst for Python 3. ([\#4260](https://github.com/matrix-org/synapse/issues/4260))
- Remove obsolete `verbose` and `log_file` settings from `homeserver.yaml` for Docker image. ([\#4261](https://github.com/matrix-org/synapse/issues/4261))
Synapse 0.33.9 (2018-11-19)
===========================
No significant changes.
Synapse 0.33.9rc1 (2018-11-14)
==============================
Features
--------
- Include flags to optionally add `m.login.terms` to the registration flow when consent tracking is enabled. ([\#4004](https://github.com/matrix-org/synapse/issues/4004), [\#4133](https://github.com/matrix-org/synapse/issues/4133), [\#4142](https://github.com/matrix-org/synapse/issues/4142), [\#4184](https://github.com/matrix-org/synapse/issues/4184))
- Support for replacing rooms with new ones ([\#4091](https://github.com/matrix-org/synapse/issues/4091), [\#4099](https://github.com/matrix-org/synapse/issues/4099), [\#4100](https://github.com/matrix-org/synapse/issues/4100), [\#4101](https://github.com/matrix-org/synapse/issues/4101))
Bugfixes
--------
- Fix exceptions when using the email mailer on Python 3. ([\#4095](https://github.com/matrix-org/synapse/issues/4095))
- Fix e2e key backup with more than 9 backup versions ([\#4113](https://github.com/matrix-org/synapse/issues/4113))
- Searches that request profile info now no longer fail with a 500. ([\#4122](https://github.com/matrix-org/synapse/issues/4122))
- fix return code of empty key backups ([\#4123](https://github.com/matrix-org/synapse/issues/4123))
- If the typing stream ID goes backwards (as on a worker when the master restarts), the worker's typing handler will no longer erroneously report rooms containing new typing events. ([\#4127](https://github.com/matrix-org/synapse/issues/4127))
- Fix table lock of device_lists_remote_cache which could freeze the application ([\#4132](https://github.com/matrix-org/synapse/issues/4132))
- Fix exception when using state res v2 algorithm ([\#4135](https://github.com/matrix-org/synapse/issues/4135))
- Generating the user consent URI no longer fails on Python 3. ([\#4140](https://github.com/matrix-org/synapse/issues/4140), [\#4163](https://github.com/matrix-org/synapse/issues/4163))
- Loading URL previews from the DB cache on Postgres will no longer cause Unicode type errors when responding to the request, and URL previews will no longer fail if the remote server returns a Content-Type header with the chartype in quotes. ([\#4157](https://github.com/matrix-org/synapse/issues/4157))
- The hash_password script now works on Python 3. ([\#4161](https://github.com/matrix-org/synapse/issues/4161))
- Fix noop checks when updating device keys, reducing spurious device list update notifications. ([\#4164](https://github.com/matrix-org/synapse/issues/4164))
Deprecations and Removals
-------------------------
- The disused and un-specced identicon generator has been removed. ([\#4106](https://github.com/matrix-org/synapse/issues/4106))
- The obsolete and non-functional /pull federation endpoint has been removed. ([\#4118](https://github.com/matrix-org/synapse/issues/4118))
- The deprecated v1 key exchange endpoints have been removed. ([\#4119](https://github.com/matrix-org/synapse/issues/4119))
- Synapse will no longer fetch keys using the fallback deprecated v1 key exchange method and will now always use v2. ([\#4120](https://github.com/matrix-org/synapse/issues/4120))
Internal Changes
----------------
- Fix build of Docker image with docker-compose ([\#3778](https://github.com/matrix-org/synapse/issues/3778))
- Delete unreferenced state groups during history purge ([\#4006](https://github.com/matrix-org/synapse/issues/4006))
- The "Received rdata" log messages on workers is now logged at DEBUG, not INFO. ([\#4108](https://github.com/matrix-org/synapse/issues/4108))
- Reduce replication traffic for device lists ([\#4109](https://github.com/matrix-org/synapse/issues/4109))
- Fix `synapse_replication_tcp_protocol_*_commands` metric label to be full command name, rather than just the first character ([\#4110](https://github.com/matrix-org/synapse/issues/4110))
- Log some bits about room creation ([\#4121](https://github.com/matrix-org/synapse/issues/4121))
- Fix `tox` failure on old systems ([\#4124](https://github.com/matrix-org/synapse/issues/4124))
- Add STATE_V2_TEST room version ([\#4128](https://github.com/matrix-org/synapse/issues/4128))
- Clean up event accesses and tests ([\#4137](https://github.com/matrix-org/synapse/issues/4137))
- The default logging config will now set an explicit log file encoding of UTF-8. ([\#4138](https://github.com/matrix-org/synapse/issues/4138))
- Add helpers functions for getting prev and auth events of an event ([\#4139](https://github.com/matrix-org/synapse/issues/4139))
- Add some tests for the HTTP pusher. ([\#4149](https://github.com/matrix-org/synapse/issues/4149))
- add purge_history.sh and purge_remote_media.sh scripts to contrib/ ([\#4155](https://github.com/matrix-org/synapse/issues/4155))
- HTTP tests have been refactored to contain less boilerplate. ([\#4156](https://github.com/matrix-org/synapse/issues/4156))
- Drop incoming events from federation for unknown rooms ([\#4165](https://github.com/matrix-org/synapse/issues/4165))
Synapse 0.33.8 (2018-11-01)
===========================
No significant changes.
Synapse 0.33.8rc2 (2018-10-31)
==============================
Bugfixes
--------
- Searches that request profile info now no longer fail with a 500. Fixes
a regression in 0.33.8rc1. ([\#4122](https://github.com/matrix-org/synapse/issues/4122))
Synapse 0.33.8rc1 (2018-10-29)
==============================
Features
--------
- Servers with auto-join rooms will now automatically create those rooms when the first user registers ([\#3975](https://github.com/matrix-org/synapse/issues/3975))
- Add config option to control alias creation ([\#4051](https://github.com/matrix-org/synapse/issues/4051))
- The register_new_matrix_user script is now ported to Python 3. ([\#4085](https://github.com/matrix-org/synapse/issues/4085))
- Configure Docker image to listen on both ipv4 and ipv6. ([\#4089](https://github.com/matrix-org/synapse/issues/4089))
Bugfixes
--------
- Fix HTTP error response codes for federated group requests. ([\#3969](https://github.com/matrix-org/synapse/issues/3969))
- Fix URL previewing to work in Python 3.7 ([\#4050](https://github.com/matrix-org/synapse/issues/4050))
- synctl will use the right python executable to run worker processes ([\#4057](https://github.com/matrix-org/synapse/issues/4057))
- Manhole now works again on Python 3, instead of failing with a "couldn't match all kex parts" when connecting. ([\#4060](https://github.com/matrix-org/synapse/issues/4060), [\#4067](https://github.com/matrix-org/synapse/issues/4067))
- Fix some metrics being racy and causing exceptions when polled by Prometheus. ([\#4061](https://github.com/matrix-org/synapse/issues/4061))
- Fix bug which prevented email notifications from being sent unless an absolute path was given for `email_templates`. ([\#4068](https://github.com/matrix-org/synapse/issues/4068))
- Correctly account for cpu usage by background threads ([\#4074](https://github.com/matrix-org/synapse/issues/4074))
- Fix race condition where config defined reserved users were not being added to
the monthly active user list prior to the homeserver reactor firing up ([\#4081](https://github.com/matrix-org/synapse/issues/4081))
- Fix bug which prevented backslashes being used in event field filters ([\#4083](https://github.com/matrix-org/synapse/issues/4083))
Internal Changes
----------------
- Add information about the [matrix-docker-ansible-deploy](https://github.com/spantaleev/matrix-docker-ansible-deploy) playbook ([\#3698](https://github.com/matrix-org/synapse/issues/3698))
- Add initial implementation of new state resolution algorithm ([\#3786](https://github.com/matrix-org/synapse/issues/3786))
- Reduce database load when fetching state groups ([\#4011](https://github.com/matrix-org/synapse/issues/4011))
- Various cleanups in the federation client code ([\#4031](https://github.com/matrix-org/synapse/issues/4031))
- Run the CircleCI builds in docker containers ([\#4041](https://github.com/matrix-org/synapse/issues/4041))
- Only colourise synctl output when attached to tty ([\#4049](https://github.com/matrix-org/synapse/issues/4049))
- Refactor room alias creation code ([\#4063](https://github.com/matrix-org/synapse/issues/4063))
- Make the Python scripts in the top-level scripts folders meet pep8 and pass flake8. ([\#4068](https://github.com/matrix-org/synapse/issues/4068))
- The README now contains example for the Caddy web server. Contributed by steamp0rt. ([\#4072](https://github.com/matrix-org/synapse/issues/4072))
- Add psutil as an explicit dependency ([\#4073](https://github.com/matrix-org/synapse/issues/4073))
- Clean up threading and logcontexts in pushers ([\#4075](https://github.com/matrix-org/synapse/issues/4075))
- Correctly manage logcontexts during startup to fix some "Unexpected logging context" warnings ([\#4076](https://github.com/matrix-org/synapse/issues/4076))
- Give some more things logcontexts ([\#4077](https://github.com/matrix-org/synapse/issues/4077))
- Clean up some bits of code which were flagged by the linter ([\#4082](https://github.com/matrix-org/synapse/issues/4082))
Synapse 0.33.7 (2018-10-18)
===========================
**Warning**: This release removes the example email notification templates from
`res/templates` (they are now internal to the python package). This should only
affect you if you (a) deploy your Synapse instance from a git checkout or a
github snapshot URL, and (b) have email notifications enabled.
If you have email notifications enabled, you should ensure that
`email.template_dir` is either configured to point at a directory where you
have installed customised templates, or leave it unset to use the default
templates.
Synapse 0.33.7rc2 (2018-10-17)
==============================
Features
--------
- Ship the example email templates as part of the package ([\#4052](https://github.com/matrix-org/synapse/issues/4052))
Bugfixes
--------
- Fix bug which made get_missing_events return too few events ([\#4045](https://github.com/matrix-org/synapse/issues/4045))
Synapse 0.33.7rc1 (2018-10-15)
==============================
Features
--------
- Add support for end-to-end key backup (MSC1687) ([\#4019](https://github.com/matrix-org/synapse/issues/4019))
Bugfixes
--------
- Fix bug in event persistence logic which caused 'NoneType is not iterable' ([\#3995](https://github.com/matrix-org/synapse/issues/3995))
- Fix exception in background metrics collection ([\#3996](https://github.com/matrix-org/synapse/issues/3996))
- Fix exception handling in fetching remote profiles ([\#3997](https://github.com/matrix-org/synapse/issues/3997))
- Fix handling of rejected threepid invites ([\#3999](https://github.com/matrix-org/synapse/issues/3999))
- Workers now start on Python 3. ([\#4027](https://github.com/matrix-org/synapse/issues/4027))
- Synapse now starts on Python 3.7. ([\#4033](https://github.com/matrix-org/synapse/issues/4033))
Internal Changes
----------------
- Log exceptions in looping calls ([\#4008](https://github.com/matrix-org/synapse/issues/4008))
- Optimisation for serving federation requests ([\#4017](https://github.com/matrix-org/synapse/issues/4017))
- Add metric to count number of non-empty sync responses ([\#4022](https://github.com/matrix-org/synapse/issues/4022))
Synapse 0.33.6 (2018-10-04)
===========================
Internal Changes
----------------
- Pin to prometheus_client<0.4toavoidrenamingallofourmetrics([\#4002](https://github.com/matrix-org/synapse/issues/4002))
Synapse 0.33.6rc1 (2018-10-03)
==============================
Features
--------
- Adding the ability to change MAX_UPLOAD_SIZE for the docker container variables. ([\#3883](https://github.com/matrix-org/synapse/issues/3883))
- Report "python_version" in the phone home stats ([\#3894](https://github.com/matrix-org/synapse/issues/3894))
- Always LL ourselves if we're in a room ([\#3916](https://github.com/matrix-org/synapse/issues/3916))
- Include eventid in log lines when processing incoming federation transactions ([\#3959](https://github.com/matrix-org/synapse/issues/3959))
- Remove spurious check which made 'localhost' servers not work ([\#3964](https://github.com/matrix-org/synapse/issues/3964))
Bugfixes
--------
- Fix problem when playing media from Chrome using direct URL (thanks @remjey!) ([\#3578](https://github.com/matrix-org/synapse/issues/3578))
- support registering regular users non-interactively with register_new_matrix_user script ([\#3836](https://github.com/matrix-org/synapse/issues/3836))
- Fix 500 error when deleting unknown room alias ([\#3889](https://github.com/matrix-org/synapse/issues/3889))
- Fix some b'abcd' noise in logs and metrics ([\#3892](https://github.com/matrix-org/synapse/issues/3892), [\#3895](https://github.com/matrix-org/synapse/issues/3895))
- When we join a room, always try the server we used for the alias lookup first, to avoid unresponsive and out-of-date servers. ([\#3899](https://github.com/matrix-org/synapse/issues/3899))
- Fix incorrect server-name indication for outgoing federation requests ([\#3907](https://github.com/matrix-org/synapse/issues/3907))
- Fix adding client IPs to the database failing on Python 3. ([\#3908](https://github.com/matrix-org/synapse/issues/3908))
- Fix bug where things occaisonally were not being timed out correctly. ([\#3910](https://github.com/matrix-org/synapse/issues/3910))
- Fix bug where outbound federation would stop talking to some servers when using workers ([\#3914](https://github.com/matrix-org/synapse/issues/3914))
- Fix some instances of ExpiringCache not expiring cache items ([\#3932](https://github.com/matrix-org/synapse/issues/3932), [\#3980](https://github.com/matrix-org/synapse/issues/3980))
- Fix out-of-bounds error when LLing yourself ([\#3936](https://github.com/matrix-org/synapse/issues/3936))
- Sending server notices regarding user consent now works on Python 3. ([\#3938](https://github.com/matrix-org/synapse/issues/3938))
- Fix exceptions from metrics handler ([\#3956](https://github.com/matrix-org/synapse/issues/3956))
- Fix error message for events with m.room.create missing from auth_events ([\#3960](https://github.com/matrix-org/synapse/issues/3960))
- Fix errors due to concurrent monthly_active_user upserts ([\#3961](https://github.com/matrix-org/synapse/issues/3961))
- Fix exceptions when processing incoming events over federation ([\#3968](https://github.com/matrix-org/synapse/issues/3968))
- Fix lazy loaded sync in the presence of rejected state events ([\#3986](https://github.com/matrix-org/synapse/issues/3986))
- Fix error when logging incomplete HTTP requests ([\#3990](https://github.com/matrix-org/synapse/issues/3990))
Internal Changes
----------------
- Unit tests can now be run under PostgreSQL in Docker using ``test_postgresql.sh``. ([\#3699](https://github.com/matrix-org/synapse/issues/3699))
- Speed up calculation of typing updates for replication ([\#3794](https://github.com/matrix-org/synapse/issues/3794))
- Remove documentation regarding installation on Cygwin, the use of WSL is recommended instead. ([\#3873](https://github.com/matrix-org/synapse/issues/3873))
- Fix typo in README, synaspse -> synapse ([\#3897](https://github.com/matrix-org/synapse/issues/3897))
- Increase the timeout when filling missing events in federation requests ([\#3903](https://github.com/matrix-org/synapse/issues/3903))
- Improve the logging when handling a federation transaction ([\#3904](https://github.com/matrix-org/synapse/issues/3904), [\#3966](https://github.com/matrix-org/synapse/issues/3966))
- Improve logging of outbound federation requests ([\#3906](https://github.com/matrix-org/synapse/issues/3906), [\#3909](https://github.com/matrix-org/synapse/issues/3909))
- Fix the docker image building on python 3 ([\#3911](https://github.com/matrix-org/synapse/issues/3911))
- Add a regression test for logging failed HTTP requests on Python 3. ([\#3912](https://github.com/matrix-org/synapse/issues/3912))
- Comments and interface cleanup for on_receive_pdu ([\#3924](https://github.com/matrix-org/synapse/issues/3924))
- Log exceptions thrown by background tasks ([\#3927](https://github.com/matrix-org/synapse/issues/3927))
- Add a cache to get_destination_retry_timings ([\#3933](https://github.com/matrix-org/synapse/issues/3933), [\#3991](https://github.com/matrix-org/synapse/issues/3991))
- Automate pushes to docker hub ([\#3946](https://github.com/matrix-org/synapse/issues/3946))
- Require attrs 16.0.0 or later ([\#3947](https://github.com/matrix-org/synapse/issues/3947))
- Fix incompatibility with python3 on alpine ([\#3948](https://github.com/matrix-org/synapse/issues/3948))
- Run the test suite on the oldest supported versions of our dependencies in CI. ([\#3952](https://github.com/matrix-org/synapse/issues/3952))
- CircleCI now only runs merged jobs on PRs, and commit jobs on develop, master, and release branches. ([\#3957](https://github.com/matrix-org/synapse/issues/3957))
- Fix docstrings and add tests for state store methods ([\#3958](https://github.com/matrix-org/synapse/issues/3958))
- fix docstring for FederationClient.get_state_for_room ([\#3963](https://github.com/matrix-org/synapse/issues/3963))
- Run notify_app_services as a bg process ([\#3965](https://github.com/matrix-org/synapse/issues/3965))
- Clarifications in FederationHandler ([\#3967](https://github.com/matrix-org/synapse/issues/3967))
- Further reduce the docker image size ([\#3972](https://github.com/matrix-org/synapse/issues/3972))
- Build py3 docker images for docker hub too ([\#3976](https://github.com/matrix-org/synapse/issues/3976))
- Updated the installation instructions to point to the matrix-synapse package on PyPI. ([\#3985](https://github.com/matrix-org/synapse/issues/3985))
- Disable USE_FROZEN_DICTS for unittests by default. ([\#3987](https://github.com/matrix-org/synapse/issues/3987))
- Remove unused Jenkins and development related files from the repo. ([\#3988](https://github.com/matrix-org/synapse/issues/3988))
- Improve stacktraces in certain exceptions in the logs ([\#3989](https://github.com/matrix-org/synapse/issues/3989))
Synapse 0.33.5.1 (2018-09-25)
=============================
Internal Changes
----------------
- Fix incompatibility with older Twisted version in tests. Thanks @OlegGirko! ([\#3940](https://github.com/matrix-org/synapse/issues/3940))
Synapse 0.33.5 (2018-09-24)
===========================
No significant changes.
Synapse 0.33.5rc1 (2018-09-17)
==============================
Features
--------
- Python 3.5 and 3.6 support is now in beta. ([\#3576](https://github.com/matrix-org/synapse/issues/3576))
- Implement `event_format` filter param in `/sync` ([\#3790](https://github.com/matrix-org/synapse/issues/3790))
- Add synapse_admin_mau:registered_reserved_users metric to expose number of real reaserved users ([\#3846](https://github.com/matrix-org/synapse/issues/3846))
Bugfixes
--------
- Remove connection ID for replication prometheus metrics, as it creates a large number of new series. ([\#3788](https://github.com/matrix-org/synapse/issues/3788))
- guest users should not be part of mau total ([\#3800](https://github.com/matrix-org/synapse/issues/3800))
- Bump dependency on pyopenssl 16.x, to avoid incompatibility with recent Twisted. ([\#3804](https://github.com/matrix-org/synapse/issues/3804))
- Fix existing room tags not coming down sync when joining a room ([\#3810](https://github.com/matrix-org/synapse/issues/3810))
- fix VOIP crashes under Python 3 (issue [\#3821](https://github.com/matrix-org/synapse/issues/3821)). ([\#3835](https://github.com/matrix-org/synapse/issues/3835))
- Fix manhole so that it works with latest openssh clients ([\#3841](https://github.com/matrix-org/synapse/issues/3841))
- Fix outbound requests occasionally wedging, which can result in federation breaking between servers. ([\#3845](https://github.com/matrix-org/synapse/issues/3845))
- Show heroes if room name/canonical alias has been deleted ([\#3851](https://github.com/matrix-org/synapse/issues/3851))
- Fix handling of redacted events from federation ([\#3859](https://github.com/matrix-org/synapse/issues/3859))
- CircleCI tests now run on the potential merge of a PR. ([\#3704](https://github.com/matrix-org/synapse/issues/3704))
- http/ is now ported to Python 3. ([\#3771](https://github.com/matrix-org/synapse/issues/3771))
- Improve human readable error messages for threepid registration/account update ([\#3789](https://github.com/matrix-org/synapse/issues/3789))
- Make /sync slightly faster by avoiding needless copies ([\#3795](https://github.com/matrix-org/synapse/issues/3795))
- handlers/ is now ported to Python 3. ([\#3803](https://github.com/matrix-org/synapse/issues/3803))
- Limit the number of PDUs/EDUs per federation transaction ([\#3805](https://github.com/matrix-org/synapse/issues/3805))
- Only start postgres instance for postgres tests on Travis CI ([\#3806](https://github.com/matrix-org/synapse/issues/3806))
- tests/ is now ported to Python 3. ([\#3808](https://github.com/matrix-org/synapse/issues/3808))
- crypto/ is now ported to Python 3. ([\#3822](https://github.com/matrix-org/synapse/issues/3822))
- rest/ is now ported to Python 3. ([\#3823](https://github.com/matrix-org/synapse/issues/3823))
- add some logging for the keyring queue ([\#3826](https://github.com/matrix-org/synapse/issues/3826))
- speed up lazy loading by 2-3x ([\#3827](https://github.com/matrix-org/synapse/issues/3827))
- Improved Dockerfile to remove build requirements after building reducing the image size. ([\#3834](https://github.com/matrix-org/synapse/issues/3834))
- Disable lazy loading for incremental syncs for now ([\#3840](https://github.com/matrix-org/synapse/issues/3840))
- federation/ is now ported to Python 3. ([\#3847](https://github.com/matrix-org/synapse/issues/3847))
- Log when we retry outbound requests ([\#3853](https://github.com/matrix-org/synapse/issues/3853))
- Removed some excess logging messages. ([\#3855](https://github.com/matrix-org/synapse/issues/3855))
- Speed up purge history for rooms that have been previously purged ([\#3856](https://github.com/matrix-org/synapse/issues/3856))
- Refactor some HTTP timeout code. ([\#3857](https://github.com/matrix-org/synapse/issues/3857))
- Fix running merged builds on CircleCI ([\#3858](https://github.com/matrix-org/synapse/issues/3858))
- Fix typo in replication stream exception. ([\#3860](https://github.com/matrix-org/synapse/issues/3860))
- Add in flight real time metrics for Measure blocks ([\#3871](https://github.com/matrix-org/synapse/issues/3871))
- Disable buffering and automatic retrying in treq requests to prevent timeouts. ([\#3872](https://github.com/matrix-org/synapse/issues/3872))
- mention jemalloc in the README ([\#3877](https://github.com/matrix-org/synapse/issues/3877))
- Unignore synctl in .dockerignore to fix docker builds ([\#3802](https://github.com/matrix-org/synapse/issues/3802))
Synapse 0.33.4rc2 (2018-09-06)
==============================
Pull in security fixes from v0.33.3.1
Synapse 0.33.3.1 (2018-09-06)
=============================
SECURITY FIXES
--------------
- Fix an issue where event signatures were not always correctly validated ([\#3796](https://github.com/matrix-org/synapse/issues/3796))
- Fix an issue where server_acls could be circumvented for incoming events ([\#3796](https://github.com/matrix-org/synapse/issues/3796))
Internal Changes
----------------
- Unignore synctl in .dockerignore to fix docker builds ([\#3802](https://github.com/matrix-org/synapse/issues/3802))
Synapse 0.33.4rc1 (2018-09-04)
==============================
Features
--------
- Support profile API endpoints on workers ([\#3659](https://github.com/matrix-org/synapse/issues/3659))
- Server notices for resource limit blocking ([\#3680](https://github.com/matrix-org/synapse/issues/3680))
- Allow guests to use /rooms/:roomId/event/:eventId ([\#3724](https://github.com/matrix-org/synapse/issues/3724))
- Add mau_trial_days config param, so that users only get counted as MAU after N days. ([\#3749](https://github.com/matrix-org/synapse/issues/3749))
- Require twisted 17.1 or later (fixes [#3741](https://github.com/matrix-org/synapse/issues/3741)). ([\#3751](https://github.com/matrix-org/synapse/issues/3751))
Bugfixes
--------
- Fix error collecting prometheus metrics when run on dedicated thread due to threading concurrency issues ([\#3722](https://github.com/matrix-org/synapse/issues/3722))
- Fix bug where we resent "limit exceeded" server notices repeatedly ([\#3747](https://github.com/matrix-org/synapse/issues/3747))
- Fix bug where we broke sync when using limit_usage_by_mau but hadn't configured server notices ([\#3753](https://github.com/matrix-org/synapse/issues/3753))
- Fix 'federation_domain_whitelist' such that an empty list correctly blocks all outbound federation traffic ([\#3754](https://github.com/matrix-org/synapse/issues/3754))
- Fix tagging of server notice rooms ([\#3755](https://github.com/matrix-org/synapse/issues/3755), [\#3756](https://github.com/matrix-org/synapse/issues/3756))
- Fix 'admin_uri' config variable and error parameter to be 'admin_contact' to match the spec. ([\#3758](https://github.com/matrix-org/synapse/issues/3758))
- Don't return non-LL-member state in incremental sync state blocks ([\#3760](https://github.com/matrix-org/synapse/issues/3760))
- Fix bug in sending presence over federation ([\#3768](https://github.com/matrix-org/synapse/issues/3768))
- Fix bug where preserved threepid user comes to sign up and server is mau blocked ([\#3777](https://github.com/matrix-org/synapse/issues/3777))
Internal Changes
----------------
- Removed the link to the unmaintained matrix-synapse-auto-deploy project from the readme. ([\#3378](https://github.com/matrix-org/synapse/issues/3378))
- Refactor state module to support multiple room versions ([\#3673](https://github.com/matrix-org/synapse/issues/3673))
- The synapse.storage module has been ported to Python 3. ([\#3725](https://github.com/matrix-org/synapse/issues/3725))
- Split the state_group_cache into member and non-member state events (and so speed up LL /sync) ([\#3726](https://github.com/matrix-org/synapse/issues/3726))
- Log failure to authenticate remote servers as warnings (without stack traces) ([\#3727](https://github.com/matrix-org/synapse/issues/3727))
- The CONTRIBUTING guidelines have been updated to mention our use of Markdown and that .misc files have content. ([\#3730](https://github.com/matrix-org/synapse/issues/3730))
- Reference the need for an HTTP replication port when using the federation_reader worker ([\#3734](https://github.com/matrix-org/synapse/issues/3734))
- Fix minor spelling error in federation client documentation. ([\#3735](https://github.com/matrix-org/synapse/issues/3735))
- Remove redundant state resolution function ([\#3737](https://github.com/matrix-org/synapse/issues/3737))
- The test suite now passes on PostgreSQL. ([\#3740](https://github.com/matrix-org/synapse/issues/3740))
- Fix MAU cache invalidation due to missing yield ([\#3746](https://github.com/matrix-org/synapse/issues/3746))
- Make sure that we close db connections opened during init ([\#3764](https://github.com/matrix-org/synapse/issues/3764))
Synapse 0.33.3 (2018-08-22)
===========================
Bugfixes
--------
- Fix bug introduced in v0.33.3rc1 which made the ToS give a 500 error ([\#3732](https://github.com/matrix-org/synapse/issues/3732))
Synapse 0.33.3rc2 (2018-08-21)
==============================
Bugfixes
--------
- Fix bug in v0.33.3rc1 which caused infinite loops and OOMs ([\#3723](https://github.com/matrix-org/synapse/issues/3723))
Synapse 0.33.3rc1 (2018-08-21)
==============================
Features
--------
- Add support for the SNI extension to federation TLS connections. Thanks to @vojeroen! ([\#3439](https://github.com/matrix-org/synapse/issues/3439))
- speed up /members API and add `at` and `membership` params as per MSC1227 ([\#3568](https://github.com/matrix-org/synapse/issues/3568))
- implement `summary` block in /sync response as per MSC688 ([\#3574](https://github.com/matrix-org/synapse/issues/3574))
- Add lazy-loading support to /messages as per MSC1227 ([\#3589](https://github.com/matrix-org/synapse/issues/3589))
- Add ability to limit number of monthly active users on the server ([\#3633](https://github.com/matrix-org/synapse/issues/3633))
- Support more federation endpoints on workers ([\#3653](https://github.com/matrix-org/synapse/issues/3653))
- Basic support for room versioning ([\#3654](https://github.com/matrix-org/synapse/issues/3654))
- Ability to disable client/server Synapse via conf toggle ([\#3655](https://github.com/matrix-org/synapse/issues/3655))
- Ability to whitelist specific threepids against monthly active user limiting ([\#3662](https://github.com/matrix-org/synapse/issues/3662))
- Add some metrics for the appservice and federation event sending loops ([\#3664](https://github.com/matrix-org/synapse/issues/3664))
- Where server is disabled, block ability for locked out users to read new messages ([\#3670](https://github.com/matrix-org/synapse/issues/3670))
- set admin uri via config, to be used in error messages where the user should contact the administrator ([\#3687](https://github.com/matrix-org/synapse/issues/3687))
- Synapse's presence functionality can now be disabled with the "use_presence" configuration option. ([\#3694](https://github.com/matrix-org/synapse/issues/3694))
- For resource limit blocked users, prevent writing into rooms ([\#3708](https://github.com/matrix-org/synapse/issues/3708))
Bugfixes
--------
- Fix occasional glitches in the synapse_event_persisted_position metric ([\#3658](https://github.com/matrix-org/synapse/issues/3658))
- Fix bug on deleting 3pid when using identity servers that don't support unbind API ([\#3661](https://github.com/matrix-org/synapse/issues/3661))
- Make the tests pass on Twisted <18.7.0([\#3676](https://github.com/matrix-org/synapse/issues/3676))
- Don’t ship recaptcha_ajax.js, use it directly from Google ([\#3677](https://github.com/matrix-org/synapse/issues/3677))
- Fixes test_reap_monthly_active_users so it passes under postgres ([\#3681](https://github.com/matrix-org/synapse/issues/3681))
- Fix missing yield in synapse.storage.monthly_active_users.initialise_reserved_users ([\#3692](https://github.com/matrix-org/synapse/issues/3692))
- Improve HTTP request logging to include all requests ([\#3700](https://github.com/matrix-org/synapse/issues/3700))
- Avoid timing out requests while we are streaming back the response ([\#3701](https://github.com/matrix-org/synapse/issues/3701))
- Support more federation endpoints on workers ([\#3705](https://github.com/matrix-org/synapse/issues/3705), [\#3713](https://github.com/matrix-org/synapse/issues/3713))
- Fix "Starting db txn 'get_all_updated_receipts' from sentinel context" warning ([\#3710](https://github.com/matrix-org/synapse/issues/3710))
- The Shared-Secret registration method of the legacy v1/register REST endpoint has been removed. For a replacement, please see [the admin/register API documentation](https://github.com/matrix-org/synapse/blob/master/docs/admin_api/register_api.rst). ([\#3703](https://github.com/matrix-org/synapse/issues/3703))
Internal Changes
----------------
- The test suite now can run under PostgreSQL. ([\#3423](https://github.com/matrix-org/synapse/issues/3423))
- Refactor HTTP replication endpoints to reduce code duplication ([\#3632](https://github.com/matrix-org/synapse/issues/3632))
- Tests now correctly execute on Python 3. ([\#3647](https://github.com/matrix-org/synapse/issues/3647))
- Sytests can now be run inside a Docker container. ([\#3660](https://github.com/matrix-org/synapse/issues/3660))
- Port over enough to Python 3 to allow the sytests to start. ([\#3668](https://github.com/matrix-org/synapse/issues/3668))
- Update docker base image from alpine 3.7 to 3.8. ([\#3669](https://github.com/matrix-org/synapse/issues/3669))
- Rename synapse.util.async to synapse.util.async_helpers to mitigate async becoming a keyword on Python 3.7. ([\#3678](https://github.com/matrix-org/synapse/issues/3678))
- Synapse's tests are now formatted with the black autoformatter. ([\#3679](https://github.com/matrix-org/synapse/issues/3679))
- Implemented a new testing base class to reduce test boilerplate. ([\#3684](https://github.com/matrix-org/synapse/issues/3684))
- Rename MAU prometheus metrics ([\#3690](https://github.com/matrix-org/synapse/issues/3690))
- add new error type ResourceLimit ([\#3707](https://github.com/matrix-org/synapse/issues/3707))
- Logcontexts for replication command handlers ([\#3709](https://github.com/matrix-org/synapse/issues/3709))
- Update admin register API documentation to reference a real user ID. ([\#3712](https://github.com/matrix-org/synapse/issues/3712))
Synapse 0.33.2 (2018-08-09)
===========================
No significant changes.
Synapse 0.33.2rc1 (2018-08-07)
==============================
Features
--------
- add support for the lazy_loaded_members filter as per MSC1227 ([\#2970](https://github.com/matrix-org/synapse/issues/2970))
- add support for the include_redundant_members filter param as per MSC1227 ([\#3331](https://github.com/matrix-org/synapse/issues/3331))
- Add metrics to track resource usage by background processes ([\#3553](https://github.com/matrix-org/synapse/issues/3553), [\#3556](https://github.com/matrix-org/synapse/issues/3556), [\#3604](https://github.com/matrix-org/synapse/issues/3604), [\#3610](https://github.com/matrix-org/synapse/issues/3610))
- Add `code` label to `synapse_http_server_response_time_seconds` prometheus metric ([\#3554](https://github.com/matrix-org/synapse/issues/3554))
- Add support for client_reader to handle more APIs ([\#3555](https://github.com/matrix-org/synapse/issues/3555), [\#3597](https://github.com/matrix-org/synapse/issues/3597))
- make the /context API filter & lazy-load aware as per MSC1227 ([\#3567](https://github.com/matrix-org/synapse/issues/3567))
- Add ability to limit number of monthly active users on the server ([\#3630](https://github.com/matrix-org/synapse/issues/3630))
- When we fail to join a room over federation, pass the error code back to the client. ([\#3639](https://github.com/matrix-org/synapse/issues/3639))
- Add a new /admin/register API for non-interactively creating users. ([\#3415](https://github.com/matrix-org/synapse/issues/3415))
Bugfixes
--------
- Make /directory/list API return 404 for room not found instead of 400. Thanks to @fuzzmz! ([\#3620](https://github.com/matrix-org/synapse/issues/3620))
- Default inviter_display_name to mxid for email invites ([\#3391](https://github.com/matrix-org/synapse/issues/3391))
- Don't generate TURN credentials if no TURN config options are set ([\#3514](https://github.com/matrix-org/synapse/issues/3514))
- Correctly announce deleted devices over federation ([\#3520](https://github.com/matrix-org/synapse/issues/3520))
- Catch failures saving metrics captured by Measure, and instead log the faulty metrics information for further analysis. ([\#3548](https://github.com/matrix-org/synapse/issues/3548))
- Unicode passwords are now normalised before hashing, preventing the instance where two different devices or browsers might send a different UTF-8 sequence for the password. ([\#3569](https://github.com/matrix-org/synapse/issues/3569))
- Fix potential stack overflow and deadlock under heavy load ([\#3570](https://github.com/matrix-org/synapse/issues/3570))
- Respond with M_NOT_FOUND when profiles are not found locally or over federation. Fixes [\#3585](https://github.com/matrix-org/synapse/issues/3585). ([\#3585](https://github.com/matrix-org/synapse/issues/3585))
- Rewrite cache list decorator ([\#3384](https://github.com/matrix-org/synapse/issues/3384))
- Move v1-only REST APIs into their own module. ([\#3460](https://github.com/matrix-org/synapse/issues/3460))
- Replace more instances of Python 2-only iteritems and itervalues uses. ([\#3562](https://github.com/matrix-org/synapse/issues/3562))
- Refactor EventContext to accept state during init ([\#3577](https://github.com/matrix-org/synapse/issues/3577))
- Improve Dockerfile and docker-compose instructions ([\#3543](https://github.com/matrix-org/synapse/issues/3543))
- Release notes are now in the Markdown format. ([\#3552](https://github.com/matrix-org/synapse/issues/3552))
- add config for pep8 ([\#3559](https://github.com/matrix-org/synapse/issues/3559))
- Merge Linearizer and Limiter ([\#3571](https://github.com/matrix-org/synapse/issues/3571), [\#3572](https://github.com/matrix-org/synapse/issues/3572))
- Lazily load state on master process when using workers to reduce DB consumption ([\#3579](https://github.com/matrix-org/synapse/issues/3579), [\#3581](https://github.com/matrix-org/synapse/issues/3581), [\#3582](https://github.com/matrix-org/synapse/issues/3582), [\#3584](https://github.com/matrix-org/synapse/issues/3584))
- Fixes and optimisations for resolve_state_groups ([\#3586](https://github.com/matrix-org/synapse/issues/3586))
- Improve logging for exceptions when handling PDUs ([\#3587](https://github.com/matrix-org/synapse/issues/3587))
- Add some measure blocks to persist_events ([\#3590](https://github.com/matrix-org/synapse/issues/3590))
- Fix some random logcontext leaks. ([\#3591](https://github.com/matrix-org/synapse/issues/3591), [\#3606](https://github.com/matrix-org/synapse/issues/3606))
- Speed up calculating state deltas in persist_event loop ([\#3592](https://github.com/matrix-org/synapse/issues/3592))
- Attempt to reduce amount of state pulled out of DB during persist_events ([\#3595](https://github.com/matrix-org/synapse/issues/3595))
- Fix a documentation typo in on_make_leave_request ([\#3609](https://github.com/matrix-org/synapse/issues/3609))
- Make EventStore inherit from EventFederationStore ([\#3612](https://github.com/matrix-org/synapse/issues/3612))
- Remove some redundant joins on event_edges.room_id ([\#3613](https://github.com/matrix-org/synapse/issues/3613))
- Update the /send_leave path registration to use event_id rather than a transaction ID. ([\#3616](https://github.com/matrix-org/synapse/issues/3616))
- Refactor FederationHandler to move DB writes into separate functions ([\#3621](https://github.com/matrix-org/synapse/issues/3621))
- Remove unused field "pdu_failures" from transactions. ([\#3628](https://github.com/matrix-org/synapse/issues/3628))
- rename replication_layer to federation_client ([\#3634](https://github.com/matrix-org/synapse/issues/3634))
- Factor out exception handling in federation_client ([\#3638](https://github.com/matrix-org/synapse/issues/3638))
- Refactor location of docker build script. ([\#3644](https://github.com/matrix-org/synapse/issues/3644))
- Update CONTRIBUTING to mention newsfragments. ([\#3645](https://github.com/matrix-org/synapse/issues/3645))
Synapse 0.33.1 (2018-08-02)
===========================
SECURITY FIXES
--------------
- Fix a potential issue where servers could request events for rooms they have not joined. ([\#3641](https://github.com/matrix-org/synapse/issues/3641))
- Fix a potential issue where users could see events in private rooms before they joined. ([\#3642](https://github.com/matrix-org/synapse/issues/3642))
Synapse 0.33.0 (2018-07-19)
===========================
Bugfixes
--------
- Disable a noisy warning about logcontexts. ([\#3561](https://github.com/matrix-org/synapse/issues/3561))
- Include CPU time from database threads in request/block metrics. ([\#3496](https://github.com/matrix-org/synapse/issues/3496), [\#3501](https://github.com/matrix-org/synapse/issues/3501))
- Optimisation to make handling incoming federation requests more efficient. ([\#3541](https://github.com/matrix-org/synapse/issues/3541))
Bugfixes
--------
- Fix a significant performance regression in /sync. ([\#3505](https://github.com/matrix-org/synapse/issues/3505), [\#3521](https://github.com/matrix-org/synapse/issues/3521), [\#3530](https://github.com/matrix-org/synapse/issues/3530), [\#3544](https://github.com/matrix-org/synapse/issues/3544))
- Use more portable syntax in our use of the attrs package, widening the supported versions. ([\#3498](https://github.com/matrix-org/synapse/issues/3498))
- Fix queued federation requests being processed in the wrong order. ([\#3533](https://github.com/matrix-org/synapse/issues/3533))
- Ensure that erasure requests are correctly honoured for publicly accessible rooms when accessed over federation. ([\#3546](https://github.com/matrix-org/synapse/issues/3546))
Misc
----
- Refactoring to improve testability. ([\#3351](https://github.com/matrix-org/synapse/issues/3351), [\#3499](https://github.com/matrix-org/synapse/issues/3499))
- Use `isort` to sort imports. ([\#3463](https://github.com/matrix-org/synapse/issues/3463), [\#3464](https://github.com/matrix-org/synapse/issues/3464), [\#3540](https://github.com/matrix-org/synapse/issues/3540))
- Use parse and asserts from http.servlet. ([\#3534](https://github.com/matrix-org/synapse/issues/3534), [\#3535](https://github.com/matrix-org/synapse/issues/3535)).
Synapse 0.32.2 (2018-07-07)
===========================
Bugfixes
--------
- Amend the Python dependencies to depend on attrs from PyPI, not attr ([\#3492](https://github.com/matrix-org/synapse/issues/3492))
Synapse 0.32.1 (2018-07-06)
===========================
Bugfixes
--------
- Add explicit dependency on netaddr ([\#3488](https://github.com/matrix-org/synapse/issues/3488))
Changes in synapse v0.32.0 (2018-07-06)
=======================================
No changes since 0.32.0rc1
Synapse 0.32.0rc1 (2018-07-05)
==============================
Features
--------
- Add blacklist & whitelist of servers allowed to send events to a room via `m.room.server_acl` event.
- Cache factor override system for specific caches ([\#3334](https://github.com/matrix-org/synapse/issues/3334))
- Add metrics to track appservice transactions ([\#3344](https://github.com/matrix-org/synapse/issues/3344))
- Try to log more helpful info when a sig verification fails ([\#3372](https://github.com/matrix-org/synapse/issues/3372))
- Synapse now uses the best performing JSON encoder/decoder according to your runtime (simplejson on CPython, stdlib json on PyPy). ([\#3462](https://github.com/matrix-org/synapse/issues/3462))
- Fix event filtering in `get_missing_events` handler ([\#3371](https://github.com/matrix-org/synapse/issues/3371))
- Synapse is now stricter regarding accepting events which it cannot retrieve the `prev_events` for. ([\#3456](https://github.com/matrix-org/synapse/issues/3456))
SECURITY UPDATE: Prevent unauthorised users from setting state events in a room when there is no `m.room.power_levels` event in force in the room. ([\#3397](https://github.com/matrix-org/synapse/issues/3397))
Most notable change from v0.30.0 is to switch to the python prometheus library to improve system stats reporting. WARNING: this changes a number of prometheus metrics in a backwards-incompatible manner. For more details, see [docs/metrics-howto.rst](docs/metrics-howto.rst#removal-of-deprecated-metrics--time-based-counters-becoming-histograms-in-0310).
- Switch to the Python Prometheus library. ([\#3256](https://github.com/matrix-org/synapse/issues/3256), [\#3274](https://github.com/matrix-org/synapse/issues/3274))
- Let users leave the server notice room after joining. ([\#3287](https://github.com/matrix-org/synapse/issues/3287))
- daily user type phone home stats. ([\#3264](https://github.com/matrix-org/synapse/issues/3264))
- Use `iter*` methods for `_filter_events_for_server`. ([\#3267](https://github.com/matrix-org/synapse/issues/3267))
- Docs on consent bits. ([\#3268](https://github.com/matrix-org/synapse/issues/3268))
- Remove users from user directory on deactivate. ([\#3277](https://github.com/matrix-org/synapse/issues/3277))
- Avoid sending consent notice to guest users. ([\#3288](https://github.com/matrix-org/synapse/issues/3288))
- disable CPUMetrics if no /proc/self/stat. ([\#3299](https://github.com/matrix-org/synapse/issues/3299))
- Consistently use six's iteritems and wrap lazy keys/values in list() if they're not meant to be lazy. ([\#3307](https://github.com/matrix-org/synapse/issues/3307))
- Add private IPv6 addresses to example config for url preview blacklist. Thanks to @thegcat! ([\#3317](https://github.com/matrix-org/synapse/issues/3317))
- Reduce stuck read-receipts: ignore depth when updating. ([\#3318](https://github.com/matrix-org/synapse/issues/3318))
- Put python's logs into Trial when running unit tests. ([\#3319](https://github.com/matrix-org/synapse/issues/3319))
"Server Notices" are a new feature introduced in Synapse 0.30. They provide a channel whereby server administrators can send messages to users on the server.
They are used as part of communication of the server policies (see `docs/consent_tracking.md`), however the intention is that they may also find a use for features such as "Message of the day".
This feature is specific to Synapse, but uses standard Matrix communication mechanisms, so should work with any Matrix client. For more details see `docs/server_notices.md`
Notable changes, a docker file for running Synapse (Thanks to @kaiyou!) and a closed spec bug in the Client Server API. Additionally further prep for Python 3 migration.
This changes the Client-server spec to return a 401 error code instead of 403 when the access token is unrecognised. This is the behaviour required by the specification, but some clients may be relying on the old, incorrect behaviour.
-`transaction_id`, destination defined twice. Thanks to @damir-manapov! ([\#3209](https://github.com/matrix-org/synapse/issues/3209))
- Refactor event storage to prepare for changes in state calculations. ([\#3141](https://github.com/matrix-org/synapse/issues/3141))
- Set Server header in SynapseRequest. ([\#3208](https://github.com/matrix-org/synapse/issues/3208))
- Use deferred.addTimeout instead of `time_bound_deferred`. ([\#3127](https://github.com/matrix-org/synapse/issues/3127), [\#3178](https://github.com/matrix-org/synapse/issues/3178))
- Use `run_in_background` in preference to `preserve_fn`. ([\#3140](https://github.com/matrix-org/synapse/issues/3140))
- Clamp the allowed values of event depth received over federation to be `[0, 2^63 - 1]`. This mitigates an attack where malicious events injected with `depth = 2^63 - 1` render rooms unusable. Depth is used to determine the cosmetic ordering of events within a room, and so the ordering of events in such a room will default to using `stream_ordering` rather than `depth` (topological ordering).
This is a temporary solution to mitigate abuse in the wild, whilst a long term solution is being implemented to improve how the depth parameter is used.
Full details at <https://docs.google.com/document/d/1I3fi2S-XnpO45qrpCsowZv8P8dHcNZ4fsBsbOW7KABI>
v0.27.3-rc1 used a stale version of the develop branch so the changelog overstates the functionality. v0.27.3-rc2 is up to date, rc1 should be ignored.
Notable changes include API support for joinability of groups. Also new metrics and phone home stats. Phone home stats include better visibility of system usage so we can tweak synpase to work better for all users rather than our own experience with matrix.org. Also, recording "r30" stat which is the measure we use to track overall growth of the Matrix ecosystem. It is defined as:-
- use `PUT` instead of `POST` for federating `groups`/`m.join_policy`. Thanks to @krombel! ([\#3070](https://github.com/matrix-org/synapse/issues/3070))
- postgres port script: fix `state_groups_pkey` error. ([\#3072](https://github.com/matrix-org/synapse/issues/3072))
- Fix bug introduced in v0.27.0-rc1 that causes much increased memory usage in state cache. ([\#3005](https://github.com/matrix-org/synapse/issues/3005))
- Fix bug where an invalid event caused server to stop functioning correctly, due to parsing and serializing bugs in ujson library. ([\#3008](https://github.com/matrix-org/synapse/issues/3008))
The common case for running Synapse is not to run separate workers, but for those that do, be aware that synctl no longer starts the main synapse when using `-a` option with workers. A new worker file should be added with `worker_app: synapse.app.homeserver`.
This release also begins the process of renaming a number of the metrics reported to prometheus. See [docs/metrics-howto.rst](docs/metrics-howto.rst#block-and-response-metrics-renamed-for-0-27-0). Note that the v0.28.0 release will remove the deprecated metric names.
- Add ability for ASes to override message send time. ([\#2754](https://github.com/matrix-org/synapse/issues/2754))
- Add support for custom storage providers for media repository. ([\#2867](https://github.com/matrix-org/synapse/issues/2867), [\#2777](https://github.com/matrix-org/synapse/issues/2777), [\#2783](https://github.com/matrix-org/synapse/issues/2783), [\#2789](https://github.com/matrix-org/synapse/issues/2789), [\#2791](https://github.com/matrix-org/synapse/issues/2791), [\#2804](https://github.com/matrix-org/synapse/issues/2804), [\#2812](https://github.com/matrix-org/synapse/issues/2812), [\#2814](https://github.com/matrix-org/synapse/issues/2814), [\#2857](https://github.com/matrix-org/synapse/issues/2857), [\#2868](https://github.com/matrix-org/synapse/issues/2868), [\#2767](https://github.com/matrix-org/synapse/issues/2767))
- Add purge API features, see [docs/admin_api/purge_history_api.rst](docs/admin_api/purge_history_api.rst) for full details. ([\#2858](https://github.com/matrix-org/synapse/issues/2858), [\#2867](https://github.com/matrix-org/synapse/issues/2867), [\#2882](https://github.com/matrix-org/synapse/issues/2882), [\#2946](https://github.com/matrix-org/synapse/issues/2946), [\#2962](https://github.com/matrix-org/synapse/issues/2962), [\#2943](https://github.com/matrix-org/synapse/issues/2943))
- Add support for whitelisting 3PIDs that users can register. ([\#2813](https://github.com/matrix-org/synapse/issues/2813))
- Continue to factor out processing from main process and into worker processes. See updated [docs/workers.rst](docs/workers.rst) ([\#2892](https://github.com/matrix-org/synapse/issues/2892), [\#2893](https://github.com/matrix-org/synapse/issues/2893), [\#2894](https://github.com/matrix-org/synapse/issues/2894), [\#2896](https://github.com/matrix-org/synapse/issues/2896), [\#2897](https://github.com/matrix-org/synapse/issues/2897), [\#2898](https://github.com/matrix-org/synapse/issues/2898), [\#2899](https://github.com/matrix-org/synapse/issues/2899), [\#2900](https://github.com/matrix-org/synapse/issues/2900), [\#2901](https://github.com/matrix-org/synapse/issues/2901), [\#2902](https://github.com/matrix-org/synapse/issues/2902), [\#2903](https://github.com/matrix-org/synapse/issues/2903), [\#2904](https://github.com/matrix-org/synapse/issues/2904), [\#2913](https://github.com/matrix-org/synapse/issues/2913), [\#2920](https://github.com/matrix-org/synapse/issues/2920), [\#2921](https://github.com/matrix-org/synapse/issues/2921), [\#2922](https://github.com/matrix-org/synapse/issues/2922), [\#2923](https://github.com/matrix-org/synapse/issues/2923), [\#2924](https://github.com/matrix-org/synapse/issues/2924), [\#2925](https://github.com/matrix-org/synapse/issues/2925), [\#2926](https://github.com/matrix-org/synapse/issues/2926), [\#2947](https://github.com/matrix-org/synapse/issues/2947), [\#2847](https://github.com/matrix-org/synapse/issues/2847), [\#2854](https://github.com/matrix-org/synapse/issues/2854), [\#2872](https://github.com/matrix-org/synapse/issues/2872), [\#2873](https://github.com/matrix-org/synapse/issues/2873), [\#2874](https://github.com/matrix-org/synapse/issues/2874), [\#2928](https://github.com/matrix-org/synapse/issues/2928), [\#2929](https://github.com/matrix-org/synapse/issues/2929), [\#2934](https://github.com/matrix-org/synapse/issues/2934), [\#2856](https://github.com/matrix-org/synapse/issues/2856), [\#2976](https://github.com/matrix-org/synapse/issues/2976), [\#2977](https://github.com/matrix-org/synapse/issues/2977), [\#2978](https://github.com/matrix-org/synapse/issues/2978), [\#2979](https://github.com/matrix-org/synapse/issues/2979), [\#2980](https://github.com/matrix-org/synapse/issues/2980), [\#2981](https://github.com/matrix-org/synapse/issues/2981), [\#2982](https://github.com/matrix-org/synapse/issues/2982), [\#2983](https://github.com/matrix-org/synapse/issues/2983), [\#2984](https://github.com/matrix-org/synapse/issues/2984), [\#2987](https://github.com/matrix-org/synapse/issues/2987), [\#2988](https://github.com/matrix-org/synapse/issues/2988), [\#2989](https://github.com/matrix-org/synapse/issues/2989), [\#2991](https://github.com/matrix-org/synapse/issues/2991), [\#2992](https://github.com/matrix-org/synapse/issues/2992), [\#2993](https://github.com/matrix-org/synapse/issues/2993), [\#2995](https://github.com/matrix-org/synapse/issues/2995), [\#2784](https://github.com/matrix-org/synapse/issues/2784))
- Ensure state cache is used when persisting events. ([\#2864](https://github.com/matrix-org/synapse/issues/2864), [\#2871](https://github.com/matrix-org/synapse/issues/2871), [\#2802](https://github.com/matrix-org/synapse/issues/2802), [\#2835](https://github.com/matrix-org/synapse/issues/2835), [\#2836](https://github.com/matrix-org/synapse/issues/2836), [\#2841](https://github.com/matrix-org/synapse/issues/2841), [\#2842](https://github.com/matrix-org/synapse/issues/2842), [\#2849](https://github.com/matrix-org/synapse/issues/2849))
- Change the default config to bind on both IPv4 and IPv6 on all platforms. Thanks to @silkeh! ([\#2435](https://github.com/matrix-org/synapse/issues/2435))
- No longer require a specific version of saml2. Thanks to @okurz! ([\#2695](https://github.com/matrix-org/synapse/issues/2695))
- Remove `verbosity`/`log_file` from generated config. ([\#2755](https://github.com/matrix-org/synapse/issues/2755))
- Fix broken `ldap_config` config option. Thanks to @seckrv! ([\#2683](https://github.com/matrix-org/synapse/issues/2683))
- Fix error message when user is not allowed to unban. Thanks to @turt2live! ([\#2761](https://github.com/matrix-org/synapse/issues/2761))
- Fix publicised groups GET API (singular) over federation. ([\#2772](https://github.com/matrix-org/synapse/issues/2772))
- Fix user directory when using `user_directory_search_all_users` config option. ([\#2803](https://github.com/matrix-org/synapse/issues/2803), [\#2831](https://github.com/matrix-org/synapse/issues/2831))
- Fix error on `/publicRooms` when no rooms exist. ([\#2827](https://github.com/matrix-org/synapse/issues/2827))
- Fix bug in `quarantine_media`. ([\#2837](https://github.com/matrix-org/synapse/issues/2837))
- Fix `url_previews` when no `Content-Type` is returned from URL. ([\#2845](https://github.com/matrix-org/synapse/issues/2845))
- Fix rare race in sync API when joining room. ([\#2944](https://github.com/matrix-org/synapse/issues/2944))
- Fix slow event search, switch back from GIST to GIN indexes. ([\#2769](https://github.com/matrix-org/synapse/issues/2769), [\#2848](https://github.com/matrix-org/synapse/issues/2848))
- Add `is_public` to groups table to allow for private groups. ([\#2582](https://github.com/matrix-org/synapse/issues/2582))
- Add a route for determining who you are. Thanks to @turt2live! ([\#2668](https://github.com/matrix-org/synapse/issues/2668))
- Add more features to the password providers ([\#2608](https://github.com/matrix-org/synapse/issues/2608), [\#2610](https://github.com/matrix-org/synapse/issues/2610), [\#2620](https://github.com/matrix-org/synapse/issues/2620), [\#2622](https://github.com/matrix-org/synapse/issues/2622), [\#2623](https://github.com/matrix-org/synapse/issues/2623), [\#2624](https://github.com/matrix-org/synapse/issues/2624), [\#2626](https://github.com/matrix-org/synapse/issues/2626), [\#2628](https://github.com/matrix-org/synapse/issues/2628), [\#2629](https://github.com/matrix-org/synapse/issues/2629))
- Add a hook for custom rest endpoints. ([\#2627](https://github.com/matrix-org/synapse/issues/2627))
- Add API to update group room visibility. ([\#2651](https://github.com/matrix-org/synapse/issues/2651))
- Fix port script. ([\#2577](https://github.com/matrix-org/synapse/issues/2577))
- Fix error when running synapse with no logfile. ([\#2581](https://github.com/matrix-org/synapse/issues/2581))
- Fix UI auth when deleting devices. ([\#2591](https://github.com/matrix-org/synapse/issues/2591))
- Fix typo when checking if user is invited to group. ([\#2599](https://github.com/matrix-org/synapse/issues/2599))
- Fix the port script to drop NUL values in all tables. ([\#2611](https://github.com/matrix-org/synapse/issues/2611))
- Fix appservices being backlogged and not receiving new events due to a bug in `notify_interested_services`. Thanks to @xyzz! ([\#2631](https://github.com/matrix-org/synapse/issues/2631))
- Fix updating rooms avatar/display name when modified by admin. Thanks to @farialima! ([\#2636](https://github.com/matrix-org/synapse/issues/2636))
- Fix bug in state group storage. ([\#2649](https://github.com/matrix-org/synapse/issues/2649))
- Fix 500 on invalid utf-8 in request. ([\#2663](https://github.com/matrix-org/synapse/issues/2663))
- Fix caching error in the push evaluator. ([\#2332](https://github.com/matrix-org/synapse/issues/2332))
- Fix bug where pusherpool didn't start and broke some rooms. ([\#2342](https://github.com/matrix-org/synapse/issues/2342))
- Fix port script for user directory tables. ([\#2375](https://github.com/matrix-org/synapse/issues/2375))
- Fix device lists notifications when user rejoins a room. ([\#2443](https://github.com/matrix-org/synapse/issues/2443), [\#2449](https://github.com/matrix-org/synapse/issues/2449))
- Fix sync to always send down current state events in timeline. ([\#2451](https://github.com/matrix-org/synapse/issues/2451))
- Fix bug where guest users were incorrectly kicked. ([\#2453](https://github.com/matrix-org/synapse/issues/2453))
- Fix bug talking to IPv6 only servers using SRV records. ([\#2462](https://github.com/matrix-org/synapse/issues/2462))
- Fix bug where pusher pool didn't start and caused issues when interacting with some rooms. ([\#2342](https://github.com/matrix-org/synapse/issues/2342))
- Improve performance of storing user IPs. ([\#2307](https://github.com/matrix-org/synapse/issues/2307), [\#2308](https://github.com/matrix-org/synapse/issues/2308))
- Slightly improve performance of verifying access tokens. ([\#2320](https://github.com/matrix-org/synapse/issues/2320))
- Slightly improve performance of event persistence. ([\#2321](https://github.com/matrix-org/synapse/issues/2321))
- Increase default cache factor size from 0.1 to 0.5. ([\#2330](https://github.com/matrix-org/synapse/issues/2330))
- Add a user directory API ([\#2252](https://github.com/matrix-org/synapse/issues/2252), and many more)
- Add shutdown room API to remove room from local server. ([\#2291](https://github.com/matrix-org/synapse/issues/2291))
- Add API to quarantine media. ([\#2292](https://github.com/matrix-org/synapse/issues/2292))
- Add new config option to not send event contents to push servers. Thanks to @cjdelisle! ([\#2301](https://github.com/matrix-org/synapse/issues/2301))
- Fix users not getting notifications when AS listened to that `user_id`. Thanks to @slipeer! ([\#2216](https://github.com/matrix-org/synapse/issues/2216))
- Fix users without push set up not getting notifications after joining rooms. ([\#2236](https://github.com/matrix-org/synapse/issues/2236))
- Fix preview url API to trim long descriptions. ([\#2243](https://github.com/matrix-org/synapse/issues/2243))
- Fix bug where we used cached but unpersisted state group as prev group, resulting in broken state of restart. ([\#2263](https://github.com/matrix-org/synapse/issues/2263))
- Fix removing of pushers when using workers. ([\#2267](https://github.com/matrix-org/synapse/issues/2267))
- Fix CORS headers to allow Authorization header. Thanks to @krombel! ([\#2285](https://github.com/matrix-org/synapse/issues/2285))
- Add per user rate-limiting overrides. ([\#2208](https://github.com/matrix-org/synapse/issues/2208))
- Add config option to limit maximum number of events requested by `/sync` and `/messages`. Thanks to @psaavedra! ([\#2221](https://github.com/matrix-org/synapse/issues/2221))
- Make synctl a bit more user friendly. ([\#2078](https://github.com/matrix-org/synapse/issues/2078), [\#2127](https://github.com/matrix-org/synapse/issues/2127)) Thanks @APwhitehat!
- Fix nuke-room script to work with current schema. Thanks @zuckschwerdt! ([\#1927](https://github.com/matrix-org/synapse/issues/1927))
- Fix db port script to not assume postgres tables are in the public schema. Thanks @jerrykan! ([\#2024](https://github.com/matrix-org/synapse/issues/2024))
- Fix getting latest device IP for user with no devices. ([\#2118](https://github.com/matrix-org/synapse/issues/2118))
- Fix rejection of invites to unreachable servers. ([\#2145](https://github.com/matrix-org/synapse/issues/2145))
- Fix code for reporting old verify keys in synapse. ([\#2156](https://github.com/matrix-org/synapse/issues/2156))
- Fix invite state to always include all events. ([\#2163](https://github.com/matrix-org/synapse/issues/2163))
- Fix bug where synapse would always fetch state for any missing event. ([\#2170](https://github.com/matrix-org/synapse/issues/2170))
- Fix a leak with timed out HTTP connections. ([\#2180](https://github.com/matrix-org/synapse/issues/2180))
- Fix bug where we didn't time out HTTP requests to ASes. ([\#2192](https://github.com/matrix-org/synapse/issues/2192))
- Fix joining rooms over federation where not all servers in the room saw the new server had joined. ([\#2094](https://github.com/matrix-org/synapse/issues/2094))
- Use JSONSchema for validation of filters. Thanks @pik! ([\#1783](https://github.com/matrix-org/synapse/issues/1783))
- Reread log config on SIGHUP. ([\#1982](https://github.com/matrix-org/synapse/issues/1982))
- Speed up public room list. ([\#1989](https://github.com/matrix-org/synapse/issues/1989))
- Add helpful texts to logger config options. ([\#1990](https://github.com/matrix-org/synapse/issues/1990))
- Minor `/sync` performance improvements. ([\#2002](https://github.com/matrix-org/synapse/issues/2002), [\#2013](https://github.com/matrix-org/synapse/issues/2013), [\#2022](https://github.com/matrix-org/synapse/issues/2022))
- Add some debug to help diagnose weird federation issue. ([\#2035](https://github.com/matrix-org/synapse/issues/2035))
- Correctly limit retries for all federation requests. ([\#2050](https://github.com/matrix-org/synapse/issues/2050), [\#2061](https://github.com/matrix-org/synapse/issues/2061))
- Don't lock table when persisting new one time keys. ([\#2053](https://github.com/matrix-org/synapse/issues/2053))
- Reduce some CPU work on DB threads. ([\#2054](https://github.com/matrix-org/synapse/issues/2054))
- Cache hosts in room. ([\#2060](https://github.com/matrix-org/synapse/issues/2060))
- Batch sending of device list pokes. ([\#2063](https://github.com/matrix-org/synapse/issues/2063))
- Speed up persist event path in certain edge cases. ([\#2070](https://github.com/matrix-org/synapse/issues/2070))
- Fix bug where `current_state_events` renamed to `current_state_ids`. ([\#1849](https://github.com/matrix-org/synapse/issues/1849))
- Fix routing loop when fetching remote media. ([\#1992](https://github.com/matrix-org/synapse/issues/1992))
- Fix `current_state_events` table to not lie. ([\#1996](https://github.com/matrix-org/synapse/issues/1996))
- Fix CAS login to handle PartialDownloadError. ([\#1997](https://github.com/matrix-org/synapse/issues/1997))
- Fix assertion to stop transaction queue getting wedged. ([\#2010](https://github.com/matrix-org/synapse/issues/2010))
- Fix presence to fallback to `last_active_ts` if it beats the last sync time. Thanks @Half-Shot! ([\#2014](https://github.com/matrix-org/synapse/issues/2014))
- Fix bug when federation received a PDU while a room join is in progress. ([\#2016](https://github.com/matrix-org/synapse/issues/2016))
- Fix resetting state on rejected events. ([\#2025](https://github.com/matrix-org/synapse/issues/2025))
- Fix installation issues in readme. Thanks @ricco386. ([\#2037](https://github.com/matrix-org/synapse/issues/2037))
- Fix caching of remote servers' signature keys. ([\#2042](https://github.com/matrix-org/synapse/issues/2042))
- Fix some leaking log context. ([\#2048](https://github.com/matrix-org/synapse/issues/2048), [\#2049](https://github.com/matrix-org/synapse/issues/2049), [\#2057](https://github.com/matrix-org/synapse/issues/2057), [\#2058](https://github.com/matrix-org/synapse/issues/2058))
- Fix rejection of invites not reaching sync. ([\#2056](https://github.com/matrix-org/synapse/issues/2056))
- Fix bug with event visibility check in /context/ API. Thanks to Tokodomo for pointing it out! ([\#1929](https://github.com/matrix-org/synapse/issues/1929))
- Fix bug where state was incorrectly reset in a room when synapse received an event over federation that did not pass auth checks. ([\#1892](https://github.com/matrix-org/synapse/issues/1892))
- Add support for specifying multiple bind addresses. Thanks to @kyrias! ([\#1709](https://github.com/matrix-org/synapse/issues/1709), [\#1712](https://github.com/matrix-org/synapse/issues/1712), [\#1795](https://github.com/matrix-org/synapse/issues/1795), [\#1835](https://github.com/matrix-org/synapse/issues/1835))
- Add config option to configure the Riot URL used in notification emails. Thanks to @aperezdc! ([\#1811](https://github.com/matrix-org/synapse/issues/1811))
- Add username and password config options for turn server. Thanks to @xsteadfastx! ([\#1832](https://github.com/matrix-org/synapse/issues/1832))
- Implement device lists updates over federation. ([\#1857](https://github.com/matrix-org/synapse/issues/1857), [\#1861](https://github.com/matrix-org/synapse/issues/1861), [\#1864](https://github.com/matrix-org/synapse/issues/1864))
- Fix error in [\#1764](https://github.com/matrix-org/synapse/issues/1764) to actually fix the nightmare [\#1753](https://github.com/matrix-org/synapse/issues/1753) bug.
- Fix bug when checking if a guest user is allowed to join a room. Thanks to Patrik Oldsberg for diagnosing and the fix! ([\#1772](https://github.com/matrix-org/synapse/issues/1772))
- Fix bug where we failed to send ban events to the banned server. ([\#1758](https://github.com/matrix-org/synapse/issues/1758))
- Fix bug where we sent event that didn't originate on this server to other servers. ([\#1764](https://github.com/matrix-org/synapse/issues/1764))
- Fix bug where processing an event from a remote server took a long time because we were making long HTTP requests. ([\#1765](https://github.com/matrix-org/synapse/issues/1765), [\#1744](https://github.com/matrix-org/synapse/issues/1744))
- Fix memory leak in twisted by initialising logging correctly. ([\#1731](https://github.com/matrix-org/synapse/issues/1731))
- Fix bug where fetching missing events took an unacceptable amount of time in large rooms. ([\#1734](https://github.com/matrix-org/synapse/issues/1734))
Explicitly require authentication when using LDAP3. This is the default on versions of `ldap3` above 1.0, but some distributions will package an older version.
- Fix `user_threepids` schema delta, which in some instances prevented startup after upgrade. ([\#1183](https://github.com/matrix-org/synapse/issues/1183))
- Remove rate limiting from app service senders and fix `get_or_create_user` requester, thanks to Patrik Oldsberg. ([\#1157](https://github.com/matrix-org/synapse/issues/1157))
- window.postmessage for Interactive Auth fallback. ([\#1159](https://github.com/matrix-org/synapse/issues/1159))
- Use sys.executable instead of hardcoded python, thanks to Pedro Larroy. ([\#1162](https://github.com/matrix-org/synapse/issues/1162))
- Add config option for adding additional TLS fingerprints. ([\#1167](https://github.com/matrix-org/synapse/issues/1167))
- User-interactive auth on delete device. ([\#1168](https://github.com/matrix-org/synapse/issues/1168))
- Fix not being allowed to set your own `state_key`, thanks to Patrik Oldsberg. ([\#1150](https://github.com/matrix-org/synapse/issues/1150))
- Fix interactive auth to return 401 from for incorrect password. ([\#1160](https://github.com/matrix-org/synapse/issues/1160), [\#1166](https://github.com/matrix-org/synapse/issues/1166))
- Fix email push notifs being dropped. ([\#1169](https://github.com/matrix-org/synapse/issues/1169))
The release includes major changes to the state storage database schemas, which significantly reduce database size. Synapse will attempt to upgrade the current data in the background. Servers with large SQLite database may experience degradation of performance while this upgrade is in progress, therefore you may want to consider migrating to using Postgres before upgrading very large SQLite databases
- Add `only=highlight` on `/notifications`. ([\#1081](https://github.com/matrix-org/synapse/issues/1081))
- Add server param to /publicRooms. ([\#1082](https://github.com/matrix-org/synapse/issues/1082))
- Allow clients to ask for the whole of a single state event. ([\#1094](https://github.com/matrix-org/synapse/issues/1094))
- Add `is_direct` param to /createRoom. ([\#1108](https://github.com/matrix-org/synapse/issues/1108))
- Add pagination support to publicRooms. ([\#1121](https://github.com/matrix-org/synapse/issues/1121))
- Add very basic filter API to /publicRooms. ([\#1126](https://github.com/matrix-org/synapse/issues/1126))
- Add basic direct to device messaging support for E2E. ([\#1074](https://github.com/matrix-org/synapse/issues/1074), [\#1084](https://github.com/matrix-org/synapse/issues/1084), [\#1104](https://github.com/matrix-org/synapse/issues/1104), [\#1111](https://github.com/matrix-org/synapse/issues/1111))
- Avoid pulling the full state of a room out so often. ([\#1047](https://github.com/matrix-org/synapse/issues/1047), [\#1049](https://github.com/matrix-org/synapse/issues/1049), [\#1063](https://github.com/matrix-org/synapse/issues/1063), [\#1068](https://github.com/matrix-org/synapse/issues/1068))
- Don't notify for online to online presence transitions. ([\#1054](https://github.com/matrix-org/synapse/issues/1054))
- Fix CAS login. ([\#994](https://github.com/matrix-org/synapse/issues/994), [\#995](https://github.com/matrix-org/synapse/issues/995))
- Fix /sync to not clobber `status_msg`. ([\#997](https://github.com/matrix-org/synapse/issues/997))
- Fix redacted state events to include `prev_content`. ([\#1003](https://github.com/matrix-org/synapse/issues/1003))
- Fix some bugs in the auth/ldap handler. ([\#1007](https://github.com/matrix-org/synapse/issues/1007))
- Fix backfill request to limit URI length, so that remotes Don't reject the requests due to path length limits. ([\#1012](https://github.com/matrix-org/synapse/issues/1012))
- Fix AS push code to not send duplicate events. ([\#1025](https://github.com/matrix-org/synapse/issues/1025))
This release changes the LDAP configuration format in a backwards incompatible way, see [\#843](https://github.com/matrix-org/synapse/issues/843) for details.
- Fix event persistence when event has already been partially persisted. ([\#975](https://github.com/matrix-org/synapse/issues/975), [\#983](https://github.com/matrix-org/synapse/issues/983), [\#985](https://github.com/matrix-org/synapse/issues/985))
- Fix port script to also copy across backfilled events. ([\#982](https://github.com/matrix-org/synapse/issues/982))
This release changes the LDAP configuration format in a backwards incompatible way, see [\#843](https://github.com/matrix-org/synapse/issues/843) for details.
- Add optional pepper to password hashing by KentShikama. ([\#907](https://github.com/matrix-org/synapse/issues/907), [\#910](https://github.com/matrix-org/synapse/issues/910))
- Add an admin option to shared secret registration (breaks backwards compat). ([\#909](https://github.com/matrix-org/synapse/issues/909))
- Add purge local room history API. ([\#911](https://github.com/matrix-org/synapse/issues/911), [\#923](https://github.com/matrix-org/synapse/issues/923), [\#924](https://github.com/matrix-org/synapse/issues/924))
- Add an /account/deactivate endpoint. ([\#921](https://github.com/matrix-org/synapse/issues/921))
- Add filter param to /messages. Add `contains_url` to filter. ([\#922](https://github.com/matrix-org/synapse/issues/922))
- Add `device_id` support to /login. ([\#929](https://github.com/matrix-org/synapse/issues/929))
- Add `device_id` support to /v2/register flow. ([\#937](https://github.com/matrix-org/synapse/issues/937), [\#942](https://github.com/matrix-org/synapse/issues/942))
- Add GET /devices endpoint. ([\#939](https://github.com/matrix-org/synapse/issues/939), [\#944](https://github.com/matrix-org/synapse/issues/944))
- Add GET /device/{deviceId}. ([\#943](https://github.com/matrix-org/synapse/issues/943))
- Add update and delete APIs for devices. ([\#949](https://github.com/matrix-org/synapse/issues/949))
- Rewrite LDAP Authentication against ldap3. Contributed by mweinelt. ([\#843](https://github.com/matrix-org/synapse/issues/843))
- Linearize some federation endpoints based on `(origin, room_id)`. ([\#879](https://github.com/matrix-org/synapse/issues/879))
- Remove the legacy v0 content upload API. ([\#888](https://github.com/matrix-org/synapse/issues/888))
- Use similar naming we use in email notifs for push. ([\#894](https://github.com/matrix-org/synapse/issues/894))
- Optionally include password hash in createUser endpoint. Contributed by KentShikama. ([\#905](https://github.com/matrix-org/synapse/issues/905))
- Use a query that postgresql optimises better for `get_events_around`. ([\#906](https://github.com/matrix-org/synapse/issues/906))
- Fall back to '`username` if `user` is not given for appservice registration. Contributed by Half-Shot. ([\#927](https://github.com/matrix-org/synapse/issues/927))
- Add metrics for psutil derived memory usage. ([\#936](https://github.com/matrix-org/synapse/issues/936))
- Record `device_id` in `client_ips`. ([\#938](https://github.com/matrix-org/synapse/issues/938))
- Send the correct host header when fetching keys. ([\#941](https://github.com/matrix-org/synapse/issues/941))
- Log the hostname the reCAPTCHA was completed on. ([\#946](https://github.com/matrix-org/synapse/issues/946))
- Make the device id on e2e key upload optional. ([\#956](https://github.com/matrix-org/synapse/issues/956))
- Add r0.2.0 to the "supported versions" list. ([\#960](https://github.com/matrix-org/synapse/issues/960))
- Don't include name of room for invites in push. ([\#961](https://github.com/matrix-org/synapse/issues/961))
- Fix substitution failure in mail template. ([\#887](https://github.com/matrix-org/synapse/issues/887))
- Put most recent 20 messages in email notif. ([\#892](https://github.com/matrix-org/synapse/issues/892))
- Ensure that the guest user is in the database when upgrading accounts. ([\#914](https://github.com/matrix-org/synapse/issues/914))
- Fix various edge cases in auth handling. ([\#919](https://github.com/matrix-org/synapse/issues/919))
- Fix 500 ISE when sending alias event without a `state_key`. ([\#925](https://github.com/matrix-org/synapse/issues/925))
- Fix bug where we stored rejections in the `state_group`, persist all rejections. ([\#948](https://github.com/matrix-org/synapse/issues/948))
- Fix lack of check of if the user is banned when handling 3pid invites. ([\#952](https://github.com/matrix-org/synapse/issues/952))
- Fix a couple of bugs in the transaction and keyring code. ([\#954](https://github.com/matrix-org/synapse/issues/954), [\#955](https://github.com/matrix-org/synapse/issues/955))
- Fix bug where rooms where marked as published by default. ([\#857](https://github.com/matrix-org/synapse/issues/857))
- Fix bug where joining room with an event with invalid sender. ([\#868](https://github.com/matrix-org/synapse/issues/868))
- Fix bug where backfilled events were sent down sync streams. ([\#869](https://github.com/matrix-org/synapse/issues/869))
- Fix bug where outgoing connections could wedge indefinitely, causing push notifications to be unreliable. ([\#870](https://github.com/matrix-org/synapse/issues/870))
- Record metrics about GC. ([\#771](https://github.com/matrix-org/synapse/issues/771), [\#847](https://github.com/matrix-org/synapse/issues/847), [\#852](https://github.com/matrix-org/synapse/issues/852))
- Add metric counter for number of persisted events. ([\#841](https://github.com/matrix-org/synapse/issues/841))
- Add basic ignore user API. ([\#763](https://github.com/matrix-org/synapse/issues/763))
- Add an openidish mechanism for proving that you own a given `user_id`. ([\#765](https://github.com/matrix-org/synapse/issues/765))
- Allow clients to specify a `server_name` to avoid "No known servers". ([\#794](https://github.com/matrix-org/synapse/issues/794))
- Add `secondary_directory_servers` option to fetch room list from other servers. ([\#808](https://github.com/matrix-org/synapse/issues/808), [\#813](https://github.com/matrix-org/synapse/issues/813))
- Add login support for Javascript Web Tokens, thanks to Niklas Riekenbrauck. ([\#671](https://github.com/matrix-org/synapse/issues/671), [\#687](https://github.com/matrix-org/synapse/issues/687))
- Change various caches to consume less memory. ([\#656](https://github.com/matrix-org/synapse/issues/656), [\#658](https://github.com/matrix-org/synapse/issues/658), [\#660](https://github.com/matrix-org/synapse/issues/660), [\#662](https://github.com/matrix-org/synapse/issues/662), [\#663](https://github.com/matrix-org/synapse/issues/663), [\#665](https://github.com/matrix-org/synapse/issues/665))
- Allow rooms to be published without requiring an alias. ([\#664](https://github.com/matrix-org/synapse/issues/664))
- Intern common strings in caches to reduce memory footprint. ([\#666](https://github.com/matrix-org/synapse/issues/666))
- Fix bug where `/events` would fail to skip some events if there had been more events than the limit specified since the last request. ([\#570](https://github.com/matrix-org/synapse/issues/570))
- Bump matrix-angular-sdk (matrix web console) dependency to 0.6.8 to pull in the fix for SYWEB-361 so that the default client can display HTML messages again(!)
Changes in synapse v0.13.0 (2016-02-10)
=======================================
This version includes an upgrade of the schema, specifically adding an index to the `events` table. This may cause synapse to pause for several minutes the first time it is started after the upgrade.
- Fix bug with upgrading guest accounts where it would fail if you opened the registration email on a different device. ([\#547](https://github.com/matrix-org/synapse/issues/547))
- Fix bug where unread count could be wrong. ([\#568](https://github.com/matrix-org/synapse/issues/568))
- Change `/sync` so that guest users only get rooms they've joined. ([\#469](https://github.com/matrix-org/synapse/issues/469))
- Change to require unbanning before other membership changes. ([\#501](https://github.com/matrix-org/synapse/issues/501))
- Change default push rules to notify for all messages. ([\#486](https://github.com/matrix-org/synapse/issues/486))
- Change default push rules to not notify on membership changes. ([\#514](https://github.com/matrix-org/synapse/issues/514))
- Change default push rules in one to one rooms to only notify for events that are messages. ([\#529](https://github.com/matrix-org/synapse/issues/529))
- Change `/sync` to reject requests with a `from` query param. ([\#512](https://github.com/matrix-org/synapse/issues/512))
- Change server manhole to use SSH rather than telnet. ([\#473](https://github.com/matrix-org/synapse/issues/473))
- Change server to require AS users to be registered before use. ([\#487](https://github.com/matrix-org/synapse/issues/487))
- Change server not to start when ASes are invalidly configured. ([\#494](https://github.com/matrix-org/synapse/issues/494))
- Change server to require ID and `as_token` to be unique for AS's. ([\#496](https://github.com/matrix-org/synapse/issues/496))
- Change maximum pagination limit to 1000. ([\#497](https://github.com/matrix-org/synapse/issues/497))
- Fix bug where `/sync` didn't return when something under the leave key changed. ([\#461](https://github.com/matrix-org/synapse/issues/461))
- Fix bug where we returned smaller rather than larger than requested thumbnails when `method=crop`. ([\#464](https://github.com/matrix-org/synapse/issues/464))
- Fix thumbnails API to only return cropped thumbnails when asking for a cropped thumbnail. ([\#475](https://github.com/matrix-org/synapse/issues/475))
- Fix bug where we occasionally still logged access tokens. ([\#477](https://github.com/matrix-org/synapse/issues/477))
- Fix bug where `/events` would always return immediately for guest users. ([\#480](https://github.com/matrix-org/synapse/issues/480))
- Fix bug where `/sync` unexpectedly returned old left rooms. ([\#481](https://github.com/matrix-org/synapse/issues/481))
- Fix enabling and disabling push rules. ([\#498](https://github.com/matrix-org/synapse/issues/498))
- Fix bug where `/register` returned 500 when given unicode username. ([\#513](https://github.com/matrix-org/synapse/issues/513))
- Allow guest accounts access to `/sync`. ([\#455](https://github.com/matrix-org/synapse/issues/455))
- Allow filters to include/exclude rooms at the room level rather than just from the components of the sync for each room. ([\#454](https://github.com/matrix-org/synapse/issues/454))
- Include urls for room avatars in the response to `/publicRooms`. ([\#453](https://github.com/matrix-org/synapse/issues/453))
- Don't set a identicon as the avatar for a user when they register. ([\#450](https://github.com/matrix-org/synapse/issues/450))
- Add a `display_name` to third-party invites. ([\#449](https://github.com/matrix-org/synapse/issues/449))
- Send more information to the identity server for third-party invites so that it can send richer messages to the invitee. ([\#446](https://github.com/matrix-org/synapse/issues/446))
- Cache the responses to `/initialSync` for 5 minutes. If a client retries a request to `/initialSync` before the a response was computed to the first request then the same response is used for both requests. ([\#457](https://github.com/matrix-org/synapse/issues/457))
- Fix a bug where synapse would always request the signing keys of remote servers even when the key was cached locally. ([\#452](https://github.com/matrix-org/synapse/issues/452))
- Fix 500 when pagination search results. ([\#447](https://github.com/matrix-org/synapse/issues/447))
- Fix a bug where synapse was leaking raw email address in third-party invites. ([\#448](https://github.com/matrix-org/synapse/issues/448))
- Add caches for whether rooms have been forgotten by a user. ([\#434](https://github.com/matrix-org/synapse/issues/434))
- Remove instructions to use `--process-dependency-link` since all of the dependencies of synapse are on PyPI. ([\#436](https://github.com/matrix-org/synapse/issues/436))
- Parallelise the processing of `/sync` requests. ([\#437](https://github.com/matrix-org/synapse/issues/437))
- Fix race updating presence in `/events`. ([\#444](https://github.com/matrix-org/synapse/issues/444))
- Host the client APIs released as r0 by <https://matrix.org/docs/spec/r0.0.0/client_server.html> on paths prefixed by `/_matrix/client/r0`. ([\#430](https://github.com/matrix-org/synapse/issues/430), [\#415](https://github.com/matrix-org/synapse/issues/415), [\#400](https://github.com/matrix-org/synapse/issues/400))
- All APIs return events in the new event format, old APIs also include the fields needed to parse the event using the old format for compatibility. ([\#402](https://github.com/matrix-org/synapse/issues/402))
- Search results are now given as a JSON array rather than a JSON object. ([\#405](https://github.com/matrix-org/synapse/issues/405))
- Miscellaneous changes to search. ([\#403](https://github.com/matrix-org/synapse/issues/403), [\#406](https://github.com/matrix-org/synapse/issues/406), [\#412](https://github.com/matrix-org/synapse/issues/412))
- Filter JSON objects may now be passed as query parameters to `/sync`. ([\#431](https://github.com/matrix-org/synapse/issues/431))
- Fix implementation of `/admin/whois`. ([\#418](https://github.com/matrix-org/synapse/issues/418))
- Only include the rooms that user has left in `/sync` if the client requests them in the filter. ([\#423](https://github.com/matrix-org/synapse/issues/423))
- Don't push for `m.room.message` by default. ([\#411](https://github.com/matrix-org/synapse/issues/411))
- Add API for setting per account user data. ([\#392](https://github.com/matrix-org/synapse/issues/392))
- Allow users to forget rooms. ([\#385](https://github.com/matrix-org/synapse/issues/385))
- Add per-request counters for CPU time spent on the main python thread. ([\#421](https://github.com/matrix-org/synapse/issues/421), [\#420](https://github.com/matrix-org/synapse/issues/420))
- Add per-request counters for time spent in the database. ([\#429](https://github.com/matrix-org/synapse/issues/429))
- Make state updates in the C+S API idempotent. ([\#416](https://github.com/matrix-org/synapse/issues/416))
- Only fire `user_joined_room` if the user has actually joined. ([\#410](https://github.com/matrix-org/synapse/issues/410))
- Reuse a single http client, rather than creating new ones. ([\#413](https://github.com/matrix-org/synapse/issues/413))
- Fixed a bug upgrading from older versions of synapse on postgresql. ([\#417](https://github.com/matrix-org/synapse/issues/417))
- Add extra options to search API. ([\#394](https://github.com/matrix-org/synapse/issues/394))
- Fix bug where we did not correctly cap federation retry timers. This meant it could take several hours for servers to start talking to resurrected servers, even when they were receiving traffic from them. ([\#393](https://github.com/matrix-org/synapse/issues/393))
- Don't advertise login token flow unless CAS is enabled. This caused issues where some clients would always use the fallback API if they did not recognize all login flows. ([\#391](https://github.com/matrix-org/synapse/issues/391))
- Change /v2 sync API to rename `private_user_data` to `account_data`. ([\#386](https://github.com/matrix-org/synapse/issues/386))
- Change /v2 sync API to remove the `event_map` and rename keys in `rooms` object. ([\#389](https://github.com/matrix-org/synapse/issues/389))
- Retry and fail federation requests more aggressively for requests that block client side requests. ([\#384](https://github.com/matrix-org/synapse/issues/384))
- Update v2 /sync API to match spec. ([\#305](https://github.com/matrix-org/synapse/issues/305), [\#316](https://github.com/matrix-org/synapse/issues/316), [\#321](https://github.com/matrix-org/synapse/issues/321), [\#332](https://github.com/matrix-org/synapse/issues/332), [\#337](https://github.com/matrix-org/synapse/issues/337), [\#341](https://github.com/matrix-org/synapse/issues/341))
- Change retry schedule for application services. ([\#320](https://github.com/matrix-org/synapse/issues/320))
- Change retry schedule for remote servers. ([\#340](https://github.com/matrix-org/synapse/issues/340))
- Fix bug where we hosted static content in the incorrect place. ([\#329](https://github.com/matrix-org/synapse/issues/329))
- Fix bug where we didn't increment retry interval for remote servers. ([\#343](https://github.com/matrix-org/synapse/issues/343))
- Add support for CAS, thanks to Steven Hammerton. ([\#295](https://github.com/matrix-org/synapse/issues/295), [\#296](https://github.com/matrix-org/synapse/issues/296))
- Add support for using macaroons for `access_token`. ([\#256](https://github.com/matrix-org/synapse/issues/256), [\#229](https://github.com/matrix-org/synapse/issues/229))
- Add support for `m.room.canonical_alias`. ([\#287](https://github.com/matrix-org/synapse/issues/287))
- Add support for viewing the history of rooms that they have left. ([\#276](https://github.com/matrix-org/synapse/issues/276), [\#294](https://github.com/matrix-org/synapse/issues/294))
- Add support for refresh tokens. ([\#240](https://github.com/matrix-org/synapse/issues/240))
- Add flag on creation which disables federation of the room. ([\#279](https://github.com/matrix-org/synapse/issues/279))
- Add some room state to invites. ([\#275](https://github.com/matrix-org/synapse/issues/275))
- Atomically persist events when joining a room over federation. ([\#283](https://github.com/matrix-org/synapse/issues/283))
- Change default history visibility for private rooms. ([\#271](https://github.com/matrix-org/synapse/issues/271))
- Allow users to redact their own sent events. ([\#262](https://github.com/matrix-org/synapse/issues/262))
- Use tox for tests. ([\#247](https://github.com/matrix-org/synapse/issues/247))
- Split up syutil into separate libraries. ([\#243](https://github.com/matrix-org/synapse/issues/243))
- Fix bug with invinting over federation where remote server was already in the room. ([\#281](https://github.com/matrix-org/synapse/issues/281), SYN-392)
- Add `--keys-directory` config option to specify where files such as certs and signing keys should be stored in, when using `--generate-config` or `--generate-keys`. ([\#250](https://github.com/matrix-org/synapse/issues/250))
- Allow `--config-path` to specify a directory, causing synapse to use all `*.yaml` files in the directory as config files. ([\#249](https://github.com/matrix-org/synapse/issues/249))
- Add `web_client_location` config option to specify static files to be hosted by synapse under `/_matrix/client`. ([\#245](https://github.com/matrix-org/synapse/issues/245))
- Fix bug where we incorrectly populated the `event_forward_extremities` table, resulting in problems joining large remote rooms (e.g. `#matrix:matrix.org`)
- Reduce the number of times we wake up pushers by not listening for presence or typing events, reducing the CPU cost of each pusher.
Changes in synapse v0.10.0-rc1 (2015-08-21)
===========================================
Also see v0.9.4-rc1 changelog, which has been amalgamated into this release.
- Change synapse to treat user IDs case insensitively during registration and login. (If two users already exist with case insensitive matching user ids, synapse will continue to require them to specify their user ids exactly.)
- Error if a user tries to register with an email already in use. ([\#211](https://github.com/matrix-org/synapse/issues/211))
- Add extra and improve existing caches. ([\#212](https://github.com/matrix-org/synapse/issues/212), [\#219](https://github.com/matrix-org/synapse/issues/219), [\#226](https://github.com/matrix-org/synapse/issues/226), [\#228](https://github.com/matrix-org/synapse/issues/228))
- Batch various storage request. ([\#226](https://github.com/matrix-org/synapse/issues/226), [\#228](https://github.com/matrix-org/synapse/issues/228))
- Fix bug where we didn't correctly log the entity that triggered the request if the request came in via an application service. ([\#230](https://github.com/matrix-org/synapse/issues/230))
- Fix bug where we needlessly regenerated the full list of rooms an AS is interested in. ([\#232](https://github.com/matrix-org/synapse/issues/232))
- Add support for AS's to use `v2_alpha` registration API. ([\#210](https://github.com/matrix-org/synapse/issues/210))
- Add `--generate-keys` that will generate any missing cert and key files in the configuration files. This is equivalent to running `--generate-config` on an existing configuration file. ([\#220](https://github.com/matrix-org/synapse/issues/220))
-`--generate-config` now no longer requires a `--server-name` parameter when used on existing configuration files. ([\#220](https://github.com/matrix-org/synapse/issues/220))
- Add `--print-pidfile` flag that controls the printing of the pid to stdout of the demonised process. ([\#213](https://github.com/matrix-org/synapse/issues/213))
- Fix bug where we picked a lower resolution image than requested. ([\#205](https://github.com/matrix-org/synapse/issues/205))
- Add support for specifying if a the media repository should dynamically thumbnail images or not. ([\#206](https://github.com/matrix-org/synapse/issues/206))
- Add statistics from the reactor to the metrics API. ([\#224](https://github.com/matrix-org/synapse/issues/224), [\#225](https://github.com/matrix-org/synapse/issues/225))
- Add support for including TLS certificate chains.
Media Repository:
- Add Content-Disposition headers to content repository responses. (SYN-150)
Changes in synapse v0.9.3 (2015-07-01)
======================================
No changes from v0.9.3 Release Candidate 1.
Changes in synapse v0.9.3-rc1 (2015-06-23)
==========================================
General:
- Fix a memory leak in the notifier. (SYN-412)
- Improve performance of room initial sync. (SYN-418)
- General improvements to logging.
- Remove `access_token` query params from `INFO` level logging.
Configuration:
- Add support for specifying and configuring multiple listeners. (SYN-389)
Application services:
- Fix bug where synapse failed to send user queries to application services.
Changes in synapse v0.9.2-r2 (2015-06-15)
=========================================
Fix packaging so that schema delta python files get included in the package.
Changes in synapse v0.9.2 (2015-06-12)
======================================
General:
- Use ultrajson for json (de)serialisation when a canonical encoding is not required. Ultrajson is significantly faster than simplejson in certain circumstances.
- Use connection pools for outgoing HTTP connections.
- Process thumbnails on separate threads.
Configuration:
- Add option, `gzip_responses`, to disable HTTP response compression.
Federation:
- Improve resilience of backfill by ensuring we fetch any missing auth events.
- Improve performance of backfill and joining remote rooms by removing unnecessary computations. This included handling events we'd previously handled as well as attempting to compute the current state for outliers.
- Add support for backfilling when a client paginates. This allows servers to request history for a room from remote servers when a client tries to paginate history the server does not have - SYN-36
- Improve performance of fetching events from the database, this improves both initialSync and sending of events.
- Improve performance of event streams, allowing synapse to handle more simultaneous connected clients.
Federation:
- Fix bug with existing backfill implementation where it returned the wrong selection of events in some circumstances.
- Improve performance of joining remote rooms.
Configuration:
- Add support for changing the bind host of the metrics listener via the `metrics_bind_host` option.
Changes in synapse v0.9.0-r5 (2015-05-21)
=========================================
- Add more database caches to reduce amount of work done for each pusher. This radically reduces CPU usage when multiple pushers are set up in the same room.
Changes in synapse v0.9.0 (2015-05-07)
======================================
General:
- Add support for using a PostgreSQL database instead of SQLite. See [docs/postgres.rst](docs/postgres.rst) for details.
- Add password change and reset APIs. See [Registration](https://github.com/matrix-org/matrix-doc/blob/master/specification/10_client_server_api.rst#registration) in the spec.
- Fix memory leak due to not releasing stale notifiers - SYN-339.
- Fix race in caches that occasionally caused some presence updates to be dropped - SYN-369.
- Check server name has not changed on restart.
- Add a sample systemd unit file and a logger configuration in contrib/systemd. Contributed Ivan Shapovalov.
Federation:
- Add key distribution mechanisms for fetching public keys of unavailable remote homeservers. See [Retrieving Server Keys](https://github.com/matrix-org/matrix-doc/blob/6f2698/specification/30_server_server_api.rst#retrieving-server-keys) in the spec.
Configuration:
- Add support for multiple config files.
- Add support for dictionaries in config files.
- Remove support for specifying config options on the command line, except for:
-`--daemonize` - Daemonize the homeserver.
-`--manhole` - Turn on the twisted telnet manhole service on the given port.
-`--database-path` - The path to a sqlite database to use.
-`--verbose` - The verbosity level.
-`--log-file` - File to log to.
-`--log-config` - Python logging config file.
-`--enable-registration` - Enable registration for new users.
Application services:
- Reliably retry sending of events from Synapse to application services, as per [Application Services](https://github.com/matrix-org/matrix-doc/blob/0c6bd9/specification/25_application_service_api.rst#home-server---application-service-api) spec.
- Application services can no longer register via the `/register` API, instead their configuration should be saved to a file and listed in the synapse `app_service_config_files` config option. The AS configuration file has the same format as the old `/register` request. See [docs/application_services.rst](docs/application_services.rst) for more information.
- Disable registration by default. New users can be added using the command `register_new_matrix_user` or by enabling registration in the config.
- Add metrics to synapse. To enable metrics use config options `enable_metrics` and `metrics_port`.
- Fix bug where banning only kicked the user.
Changes in synapse v0.8.0 (2015-03-06)
======================================
General:
- Add support for registration fallback. This is a page hosted on the server which allows a user to register for an account, regardless of what client they are using (e.g. mobile devices).
- Added new default push rules and made them configurable by clients:
- Replicate media uploads over multiple homeservers so media is always served to clients from their local homeserver. This obsoletes the `--content-addr` parameter and confusion over accessing content directly from remote homeservers.
- Change the default value for the `content_addr` option to use the HTTP listener, as by default the HTTPS listener will be using a self-signed certificate.
- The server now adds `age` key to events to indicate how old they are. This is clock independent, so at no point does any server or webclient have to assume their clock is in sync with everyone else.
- The registration API has been overhauled to function like the login API. In practice, this means registration requests must now include the following: `type`:`m.login.password`. See UPGRADE for more information on this.
- The `user_id` key has been renamed to `user` to better match the login API.
- There is an additional login type: `m.login.email.identity`.
