Synapse 1.26.0rc1 (2021-01-20)

This release brings a new schema version for Synapse and rolling back to a previous version is not trivial. Please review UPGRADE.rst for more details on these changes and for general upgrade guidance.

Features

• Add support for multiple SSO Identity Providers. (#9015, #9017, #9036, #9067, #9081, #9082, #9105, #9107, #9109, #9110, #9127, #9153, #9154, #9177)
• During user-interactive authentication via single-sign-on, give a better error if the user uses the wrong account on the SSO IdP. (#9091)
• Give the public_baseurl a default value, if it is not explicitly set in the configuration file. (#9159)
• Improve performance when calculating ignored users in large rooms. (#9024)
• Implement MSC2176 in an experimental room version. (#8984)
• Add an admin API for protecting local media from quarantine. (#9086)
• Remove a user's avatar URL and display name when deactivated with the Admin API. (#8932)
• Update /_synapse/admin/v1/users/<user_id>/joined_rooms to work for both local and remote users. (#8948)
• Add experimental support for handling to-device messages on worker processes. (#9042, #9043, #9044, #9130)
• Add experimental support for handling /keys/claim and /room_keys APIs on worker processes. (#9068)
• Add experimental support for handling /devices API on worker processes. (#9092)
• Add experimental support for moving off receipts and account data persistence off master. (#9104, #9166)

Bugfixes

• Fix a long-standing issue where an internal server error would occur when requesting a profile over federation that did not include a display name / avatar URL. (#9023)
• Fix a long-standing bug where some caches could grow larger than configured. (#9028)
• Fix error handling during insertion of client IPs into the database. (#9051)
• Fix bug where we didn't correctly record CPU time spent in on_new_event block. (#9053)
• Fix a minor bug which could cause confusing error messages from invalid configurations. (#9054)
• Fix incorrect exit code when there is an error at startup. (#9059)
• Fix JSONDecodeError spamming the logs when sending transactions to remote servers. (#9070)
• Fix "Failed to send request" errors when a client provides an invalid room alias. (#9071)
• Fix bugs in federation catchup logic that caused outbound federation to be delayed for large servers after start up. Introduced in v1.8.0 and v1.21.0. (#9114, #9116)
• Fix corruption of pushers data when a postgres bouncer is used. (#9117)
• Fix minor bugs in handling the clientRedirectUrl parameter for SSO login. (#9128)
• Fix "Unhandled error in Deferred: BodyExceededMaxSize" errors when .well-known files that are too large. (#9108)
• Fix "UnboundLocalError: local variable 'length' referenced before assignment" errors when the response body exceeds the expected size. This bug was introduced in v1.25.0. (#9145)
• Fix a long-standing bug "ValueError: invalid literal for int() with base 10" when /publicRooms is requested with an invalid server parameter. (#9161)

Improved Documentation

• Add some extra docs for getting Synapse running on macOS. (#8997)
• Correct a typo in the systemd-with-workers documentation. (#9035)
• Correct a typo in INSTALL.md. (#9040)
• Add missing user_mapping_provider configuration to the Keycloak OIDC example. Contributed by @chris-ruecker. (#9057)
• Quote pip install packages when extras are used to avoid shells interpreting bracket characters. (#9151)

Deprecations and Removals

• Remove broken and unmaintained demo/webserver.py script. (#9039)

Internal Changes

• Improve efficiency of large state resolutions. (#8868, #9029, #9115, #9118, #9124)
• Various clean-ups to the structured logging and logging context code. (#8939)
• Ensure rejected events get added to some metadata tables. (#9016)
• Ignore date-rotated homeserver logs saved to disk. (#9018)
• Remove an unused column from access_tokens table. (#9025)
• Add a -noextras factor to tox.ini, to support running the tests with no optional dependencies. (#9030)
• Fix running unit tests when optional dependencies are not installed. (#9031)
• Allow bumping schema version when using split out state database. (#9033)
• Configure the linters to run on a consistent set of files. (#9038)
• Various cleanups to device inbox store. (#9041)
• Drop unused database tables. (#9055)
• Remove unused SynapseService class. (#9058)
• Remove unnecessary declarations in the tests for the admin API. (#9063)
• Remove SynapseRequest.get_user_agent. (#9069)
• Remove redundant Homeserver.get_ip_from_request method. (#9080)
• Add type hints to media repository. (#9093)
• Fix the wrong arguments being passed to BlacklistingAgentWrapper from MatrixFederationAgent. Contributed by Timothy Leung. (#9098)
• Reduce the scope of caught exceptions in BlacklistingAgentWrapper. (#9106)
• Improve UsernamePickerTestCase. (#9112)
• Remove dependency on distutils. (#9125)
• Enforce that replication HTTP clients are called with keyword arguments only. (#9144)
• Fix the Python 3.5 / old dependencies build in CI. (#9146)
• Replace the old perspectives option in the Synapse docker config file template with trusted_key_servers. (#9157)