Fork of Synapse to remove dumb limits and fix bugs that the upstream devs don't want to fix.
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David Robertson 2aad0ae57f Synapse 1.59.0rc1 (2022-05-10)
==============================
 
 This release makes several changes that server administrators should be aware of:
 
 - Device name lookup over federation is now disabled by default. ([\#12616](https://github.com/matrix-org/synapse/issues/12616))
 - The `synapse.app.appservice` and `synapse.app.user_dir` worker application types are now deprecated. ([\#12452](https://github.com/matrix-org/synapse/issues/12452), [\#12654](https://github.com/matrix-org/synapse/issues/12654))
 
 See [the upgrade notes](https://github.com/matrix-org/synapse/blob/develop/docs/upgrade.md#upgrading-to-v1590) for more details.
 
 Additionally, this release removes the non-standard `m.login.jwt` login type from Synapse. It can be replaced with `org.matrix.login.jwt` for identical behaviour. This is only used if `jwt_config.enabled` is set to `true` in the configuration. ([\#12597](https://github.com/matrix-org/synapse/issues/12597))
 
 Features
 --------
 
 - Support [MSC3266](https://github.com/matrix-org/matrix-doc/pull/3266) room summaries over federation. ([\#11507](https://github.com/matrix-org/synapse/issues/11507))
 - Implement [changes](4a77139249) to [MSC2285 (hidden read receipts)](https://github.com/matrix-org/matrix-spec-proposals/pull/2285). Contributed by @SimonBrandner. ([\#12168](https://github.com/matrix-org/synapse/issues/12168), [\#12635](https://github.com/matrix-org/synapse/issues/12635), [\#12636](https://github.com/matrix-org/synapse/issues/12636), [\#12670](https://github.com/matrix-org/synapse/issues/12670))
 - Extend the [module API](https://github.com/matrix-org/synapse/blob/release-v1.59/synapse/module_api/__init__.py) to allow modules to change actions for existing push rules of local users. ([\#12406](https://github.com/matrix-org/synapse/issues/12406))
 - Add the `notify_appservices_from_worker` configuration option (superseding `notify_appservices`) to allow a generic worker to be designated as the worker to send traffic to Application Services. ([\#12452](https://github.com/matrix-org/synapse/issues/12452))
 - Add the `update_user_directory_from_worker` configuration option (superseding `update_user_directory`) to allow a generic worker to be designated as the worker to update the user directory. ([\#12654](https://github.com/matrix-org/synapse/issues/12654))
 - Add new `enable_registration_token_3pid_bypass` configuration option to allow registrations via token as an alternative to verifying a 3pid. ([\#12526](https://github.com/matrix-org/synapse/issues/12526))
 - Implement [MSC3786](https://github.com/matrix-org/matrix-spec-proposals/pull/3786): Add a default push rule to ignore `m.room.server_acl` events. ([\#12601](https://github.com/matrix-org/synapse/issues/12601))
 - Add new `mau_appservice_trial_days` configuration option to specify a different trial period for users registered via an appservice. ([\#12619](https://github.com/matrix-org/synapse/issues/12619))
 
 Bugfixes
 --------
 
 - Fix a bug introduced in Synapse 1.48.0 where the latest thread reply provided failed to include the proper bundled aggregations. ([\#12273](https://github.com/matrix-org/synapse/issues/12273))
 - Fix a bug introduced in Synapse 1.22.0 where attempting to send a large amount of read receipts to an application service all at once would result in duplicate content and abnormally high memory usage. Contributed by Brad & Nick @ Beeper. ([\#12544](https://github.com/matrix-org/synapse/issues/12544))
 - Fix a bug introduced in Synapse 1.57.0 which could cause `Failed to calculate hosts in room` errors to be logged for outbound federation. ([\#12570](https://github.com/matrix-org/synapse/issues/12570))
 - Fix a long-standing bug where status codes would almost always get logged as `200!`, irrespective of the actual status code, when clients disconnect before a request has finished processing. ([\#12580](https://github.com/matrix-org/synapse/issues/12580))
 - Fix race when persisting an event and deleting a room that could lead to outbound federation breaking. ([\#12594](https://github.com/matrix-org/synapse/issues/12594))
 - Fix a bug introduced in Synapse 1.53.0 where bundled aggregations for annotations/edits were incorrectly calculated. ([\#12633](https://github.com/matrix-org/synapse/issues/12633))
 - Fix a long-standing bug where rooms containing power levels with string values could not be upgraded. ([\#12657](https://github.com/matrix-org/synapse/issues/12657))
 - Prevent memory leak from reoccurring when presence is disabled. ([\#12656](https://github.com/matrix-org/synapse/issues/12656))
 
 Updates to the Docker image
 ---------------------------
 
 - Explicitly opt-in to using [BuildKit-specific features](https://github.com/moby/buildkit/blob/master/frontend/dockerfile/docs/syntax.md) in the Dockerfile. This fixes issues with building images in some GitLab CI environments. ([\#12541](https://github.com/matrix-org/synapse/issues/12541))
 - Update the "Build docker images" GitHub Actions workflow to use `docker/metadata-action` to generate docker image tags, instead of a custom shell script. Contributed by @henryclw. ([\#12573](https://github.com/matrix-org/synapse/issues/12573))
 
 Improved Documentation
 ----------------------
 
 - Update SQL statements and replace use of old table `user_stats_historical` in docs for Synapse Admins. ([\#12536](https://github.com/matrix-org/synapse/issues/12536))
 - Add missing linebreak to `pipx` install instructions. ([\#12579](https://github.com/matrix-org/synapse/issues/12579))
 - Add information about the TCP replication module to docs. ([\#12621](https://github.com/matrix-org/synapse/issues/12621))
 - Fixes to the formatting of `README.rst`. ([\#12627](https://github.com/matrix-org/synapse/issues/12627))
 - Fix docs on how to run specific Complement tests using the `complement.sh` test runner. ([\#12664](https://github.com/matrix-org/synapse/issues/12664))
 
 Deprecations and Removals
 -------------------------
 
 - Remove unstable identifiers from [MSC3069](https://github.com/matrix-org/matrix-doc/pull/3069). ([\#12596](https://github.com/matrix-org/synapse/issues/12596))
 - Remove the unspecified `m.login.jwt` login type and the unstable `uk.half-shot.msc2778.login.application_service` from
   [MSC2778](https://github.com/matrix-org/matrix-doc/pull/2778). ([\#12597](https://github.com/matrix-org/synapse/issues/12597))
 - Synapse now requires at least Python 3.7.1 (up from 3.7.0), for compatibility with the latest Twisted trunk. ([\#12613](https://github.com/matrix-org/synapse/issues/12613))
 
 Internal Changes
 ----------------
 
 - Use supervisord to supervise Postgres and Caddy in the Complement image to reduce restart time. ([\#12480](https://github.com/matrix-org/synapse/issues/12480))
 - Immediately retry any requests that have backed off when a server comes back online. ([\#12500](https://github.com/matrix-org/synapse/issues/12500))
 - Use `make_awaitable` instead of `defer.succeed` for return values of mocks in tests. ([\#12505](https://github.com/matrix-org/synapse/issues/12505))
 - Consistently check if an object is a `frozendict`. ([\#12564](https://github.com/matrix-org/synapse/issues/12564))
 - Protect module callbacks with read semantics against cancellation. ([\#12568](https://github.com/matrix-org/synapse/issues/12568))
 - Improve comments and error messages around access tokens. ([\#12577](https://github.com/matrix-org/synapse/issues/12577))
 - Improve docstrings for the receipts store. ([\#12581](https://github.com/matrix-org/synapse/issues/12581))
 - Use constants for read-receipts in tests. ([\#12582](https://github.com/matrix-org/synapse/issues/12582))
 - Log status code of cancelled requests as 499 and avoid logging stack traces for them. ([\#12587](https://github.com/matrix-org/synapse/issues/12587), [\#12663](https://github.com/matrix-org/synapse/issues/12663))
 - Remove special-case for `twisted` logger from default log config. ([\#12589](https://github.com/matrix-org/synapse/issues/12589))
 - Use `getClientAddress` instead of the deprecated `getClientIP`. ([\#12599](https://github.com/matrix-org/synapse/issues/12599))
 - Add link to documentation in Grafana Dashboard. ([\#12602](https://github.com/matrix-org/synapse/issues/12602))
 - Reduce log spam when running multiple event persisters. ([\#12610](https://github.com/matrix-org/synapse/issues/12610))
 - Add extra debug logging to federation sender. ([\#12614](https://github.com/matrix-org/synapse/issues/12614))
 - Prevent remote homeservers from requesting local user device names by default. ([\#12616](https://github.com/matrix-org/synapse/issues/12616))
 - Add a consistency check on events which we read from the database. ([\#12620](https://github.com/matrix-org/synapse/issues/12620))
 - Remove use of the `constantly` library and switch to enums for `EventRedactBehaviour`. Contributed by @andrewdoh. ([\#12624](https://github.com/matrix-org/synapse/issues/12624))
 - Remove unused code related to receipts. ([\#12632](https://github.com/matrix-org/synapse/issues/12632))
 - Minor improvements to the scripts for running Synapse in worker mode under Complement. ([\#12637](https://github.com/matrix-org/synapse/issues/12637))
 - Move `pympler` back in to the `all` extras. ([\#12652](https://github.com/matrix-org/synapse/issues/12652))
 - Fix spelling of `M_UNRECOGNIZED` in comments. ([\#12665](https://github.com/matrix-org/synapse/issues/12665))
 - Release script: confirm the commit to be tagged before tagging. ([\#12556](https://github.com/matrix-org/synapse/issues/12556))
 - Fix a typo in the announcement text generated by the Synapse release development script. ([\#12612](https://github.com/matrix-org/synapse/issues/12612))
 
 - Fix scripts-dev to pass typechecking. ([\#12356](https://github.com/matrix-org/synapse/issues/12356))
 - Add some type hints to datastore. ([\#12485](https://github.com/matrix-org/synapse/issues/12485))
 - Remove unused `# type: ignore`s. ([\#12531](https://github.com/matrix-org/synapse/issues/12531))
 - Allow unused `# type: ignore` comments in bleeding edge CI jobs. ([\#12576](https://github.com/matrix-org/synapse/issues/12576))
 - Remove redundant lines of config from `mypy.ini`. ([\#12608](https://github.com/matrix-org/synapse/issues/12608))
 - Update to mypy 0.950. ([\#12650](https://github.com/matrix-org/synapse/issues/12650))
 - Use `Concatenate` to better annotate `_do_execute`. ([\#12666](https://github.com/matrix-org/synapse/issues/12666))
 - Use `ParamSpec` to refine type hints. ([\#12667](https://github.com/matrix-org/synapse/issues/12667))
 - Fix mypy against latest pillow stubs. ([\#12671](https://github.com/matrix-org/synapse/issues/12671))
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Merge tag 'v1.59.0rc1' into develop

Synapse 1.59.0rc1 (2022-05-10)
==============================

This release makes several changes that server administrators should be aware of:

- Device name lookup over federation is now disabled by default. ([\#12616](https://github.com/matrix-org/synapse/issues/12616))
- The `synapse.app.appservice` and `synapse.app.user_dir` worker application types are now deprecated. ([\#12452](https://github.com/matrix-org/synapse/issues/12452), [\#12654](https://github.com/matrix-org/synapse/issues/12654))

See [the upgrade notes](https://github.com/matrix-org/synapse/blob/develop/docs/upgrade.md#upgrading-to-v1590) for more details.

Additionally, this release removes the non-standard `m.login.jwt` login type from Synapse. It can be replaced with `org.matrix.login.jwt` for identical behaviour. This is only used if `jwt_config.enabled` is set to `true` in the configuration. ([\#12597](https://github.com/matrix-org/synapse/issues/12597))

Features
--------

- Support [MSC3266](https://github.com/matrix-org/matrix-doc/pull/3266) room summaries over federation. ([\#11507](https://github.com/matrix-org/synapse/issues/11507))
- Implement [changes](4a77139249) to [MSC2285 (hidden read receipts)](https://github.com/matrix-org/matrix-spec-proposals/pull/2285). Contributed by @SimonBrandner. ([\#12168](https://github.com/matrix-org/synapse/issues/12168), [\#12635](https://github.com/matrix-org/synapse/issues/12635), [\#12636](https://github.com/matrix-org/synapse/issues/12636), [\#12670](https://github.com/matrix-org/synapse/issues/12670))
- Extend the [module API](https://github.com/matrix-org/synapse/blob/release-v1.59/synapse/module_api/__init__.py) to allow modules to change actions for existing push rules of local users. ([\#12406](https://github.com/matrix-org/synapse/issues/12406))
- Add the `notify_appservices_from_worker` configuration option (superseding `notify_appservices`) to allow a generic worker to be designated as the worker to send traffic to Application Services. ([\#12452](https://github.com/matrix-org/synapse/issues/12452))
- Add the `update_user_directory_from_worker` configuration option (superseding `update_user_directory`) to allow a generic worker to be designated as the worker to update the user directory. ([\#12654](https://github.com/matrix-org/synapse/issues/12654))
- Add new `enable_registration_token_3pid_bypass` configuration option to allow registrations via token as an alternative to verifying a 3pid. ([\#12526](https://github.com/matrix-org/synapse/issues/12526))
- Implement [MSC3786](https://github.com/matrix-org/matrix-spec-proposals/pull/3786): Add a default push rule to ignore `m.room.server_acl` events. ([\#12601](https://github.com/matrix-org/synapse/issues/12601))
- Add new `mau_appservice_trial_days` configuration option to specify a different trial period for users registered via an appservice. ([\#12619](https://github.com/matrix-org/synapse/issues/12619))

Bugfixes
--------

- Fix a bug introduced in Synapse 1.48.0 where the latest thread reply provided failed to include the proper bundled aggregations. ([\#12273](https://github.com/matrix-org/synapse/issues/12273))
- Fix a bug introduced in Synapse 1.22.0 where attempting to send a large amount of read receipts to an application service all at once would result in duplicate content and abnormally high memory usage. Contributed by Brad & Nick @ Beeper. ([\#12544](https://github.com/matrix-org/synapse/issues/12544))
- Fix a bug introduced in Synapse 1.57.0 which could cause `Failed to calculate hosts in room` errors to be logged for outbound federation. ([\#12570](https://github.com/matrix-org/synapse/issues/12570))
- Fix a long-standing bug where status codes would almost always get logged as `200!`, irrespective of the actual status code, when clients disconnect before a request has finished processing. ([\#12580](https://github.com/matrix-org/synapse/issues/12580))
- Fix race when persisting an event and deleting a room that could lead to outbound federation breaking. ([\#12594](https://github.com/matrix-org/synapse/issues/12594))
- Fix a bug introduced in Synapse 1.53.0 where bundled aggregations for annotations/edits were incorrectly calculated. ([\#12633](https://github.com/matrix-org/synapse/issues/12633))
- Fix a long-standing bug where rooms containing power levels with string values could not be upgraded. ([\#12657](https://github.com/matrix-org/synapse/issues/12657))
- Prevent memory leak from reoccurring when presence is disabled. ([\#12656](https://github.com/matrix-org/synapse/issues/12656))

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

- Explicitly opt-in to using [BuildKit-specific features](https://github.com/moby/buildkit/blob/master/frontend/dockerfile/docs/syntax.md) in the Dockerfile. This fixes issues with building images in some GitLab CI environments. ([\#12541](https://github.com/matrix-org/synapse/issues/12541))
- Update the "Build docker images" GitHub Actions workflow to use `docker/metadata-action` to generate docker image tags, instead of a custom shell script. Contributed by @henryclw. ([\#12573](https://github.com/matrix-org/synapse/issues/12573))

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

- Update SQL statements and replace use of old table `user_stats_historical` in docs for Synapse Admins. ([\#12536](https://github.com/matrix-org/synapse/issues/12536))
- Add missing linebreak to `pipx` install instructions. ([\#12579](https://github.com/matrix-org/synapse/issues/12579))
- Add information about the TCP replication module to docs. ([\#12621](https://github.com/matrix-org/synapse/issues/12621))
- Fixes to the formatting of `README.rst`. ([\#12627](https://github.com/matrix-org/synapse/issues/12627))
- Fix docs on how to run specific Complement tests using the `complement.sh` test runner. ([\#12664](https://github.com/matrix-org/synapse/issues/12664))

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

- Remove unstable identifiers from [MSC3069](https://github.com/matrix-org/matrix-doc/pull/3069). ([\#12596](https://github.com/matrix-org/synapse/issues/12596))
- Remove the unspecified `m.login.jwt` login type and the unstable `uk.half-shot.msc2778.login.application_service` from
  [MSC2778](https://github.com/matrix-org/matrix-doc/pull/2778). ([\#12597](https://github.com/matrix-org/synapse/issues/12597))
- Synapse now requires at least Python 3.7.1 (up from 3.7.0), for compatibility with the latest Twisted trunk. ([\#12613](https://github.com/matrix-org/synapse/issues/12613))

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

- Use supervisord to supervise Postgres and Caddy in the Complement image to reduce restart time. ([\#12480](https://github.com/matrix-org/synapse/issues/12480))
- Immediately retry any requests that have backed off when a server comes back online. ([\#12500](https://github.com/matrix-org/synapse/issues/12500))
- Use `make_awaitable` instead of `defer.succeed` for return values of mocks in tests. ([\#12505](https://github.com/matrix-org/synapse/issues/12505))
- Consistently check if an object is a `frozendict`. ([\#12564](https://github.com/matrix-org/synapse/issues/12564))
- Protect module callbacks with read semantics against cancellation. ([\#12568](https://github.com/matrix-org/synapse/issues/12568))
- Improve comments and error messages around access tokens. ([\#12577](https://github.com/matrix-org/synapse/issues/12577))
- Improve docstrings for the receipts store. ([\#12581](https://github.com/matrix-org/synapse/issues/12581))
- Use constants for read-receipts in tests. ([\#12582](https://github.com/matrix-org/synapse/issues/12582))
- Log status code of cancelled requests as 499 and avoid logging stack traces for them. ([\#12587](https://github.com/matrix-org/synapse/issues/12587), [\#12663](https://github.com/matrix-org/synapse/issues/12663))
- Remove special-case for `twisted` logger from default log config. ([\#12589](https://github.com/matrix-org/synapse/issues/12589))
- Use `getClientAddress` instead of the deprecated `getClientIP`. ([\#12599](https://github.com/matrix-org/synapse/issues/12599))
- Add link to documentation in Grafana Dashboard. ([\#12602](https://github.com/matrix-org/synapse/issues/12602))
- Reduce log spam when running multiple event persisters. ([\#12610](https://github.com/matrix-org/synapse/issues/12610))
- Add extra debug logging to federation sender. ([\#12614](https://github.com/matrix-org/synapse/issues/12614))
- Prevent remote homeservers from requesting local user device names by default. ([\#12616](https://github.com/matrix-org/synapse/issues/12616))
- Add a consistency check on events which we read from the database. ([\#12620](https://github.com/matrix-org/synapse/issues/12620))
- Remove use of the `constantly` library and switch to enums for `EventRedactBehaviour`. Contributed by @andrewdoh. ([\#12624](https://github.com/matrix-org/synapse/issues/12624))
- Remove unused code related to receipts. ([\#12632](https://github.com/matrix-org/synapse/issues/12632))
- Minor improvements to the scripts for running Synapse in worker mode under Complement. ([\#12637](https://github.com/matrix-org/synapse/issues/12637))
- Move `pympler` back in to the `all` extras. ([\#12652](https://github.com/matrix-org/synapse/issues/12652))
- Fix spelling of `M_UNRECOGNIZED` in comments. ([\#12665](https://github.com/matrix-org/synapse/issues/12665))
- Release script: confirm the commit to be tagged before tagging. ([\#12556](https://github.com/matrix-org/synapse/issues/12556))
- Fix a typo in the announcement text generated by the Synapse release development script. ([\#12612](https://github.com/matrix-org/synapse/issues/12612))

- Fix scripts-dev to pass typechecking. ([\#12356](https://github.com/matrix-org/synapse/issues/12356))
- Add some type hints to datastore. ([\#12485](https://github.com/matrix-org/synapse/issues/12485))
- Remove unused `# type: ignore`s. ([\#12531](https://github.com/matrix-org/synapse/issues/12531))
- Allow unused `# type: ignore` comments in bleeding edge CI jobs. ([\#12576](https://github.com/matrix-org/synapse/issues/12576))
- Remove redundant lines of config from `mypy.ini`. ([\#12608](https://github.com/matrix-org/synapse/issues/12608))
- Update to mypy 0.950. ([\#12650](https://github.com/matrix-org/synapse/issues/12650))
- Use `Concatenate` to better annotate `_do_execute`. ([\#12666](https://github.com/matrix-org/synapse/issues/12666))
- Use `ParamSpec` to refine type hints. ([\#12667](https://github.com/matrix-org/synapse/issues/12667))
- Fix mypy against latest pillow stubs. ([\#12671](https://github.com/matrix-org/synapse/issues/12671))
2022-05-10 13:17:56 +01:00
.ci Add CI job to act as a canary for testing against latest dependencies (#12472) 2022-04-20 12:48:44 +01:00
.github Use docker/metadata-action to generate docker image tags (#12573) 2022-05-05 12:36:42 +00:00
changelog.d Synapse 1.59.0rc1 (2022-05-10) 2022-05-10 13:17:56 +01:00
contrib docs(contrib): Add link to documentation in dashboard (#12602) 2022-05-09 10:08:31 +00:00
debian 1.59.0rc1 2022-05-10 10:45:13 +01:00
demo Add restrictions by default to open registration in Synapse (#12091) 2022-03-25 10:11:01 -07:00
docker Tweaks to workers-under-complement (#12637) 2022-05-09 22:41:06 +01:00
docs Add the update_user_directory_from_worker configuration option (superseding update_user_directory) to allow a generic worker to be designated as the worker to update the user directory. (#12654) 2022-05-10 11:08:45 +01:00
scripts-dev Tweaks to workers-under-complement (#12637) 2022-05-09 22:41:06 +01:00
stubs Update mypy to 0.950 and fix complaints (#12650) 2022-05-06 12:35:20 +00:00
synapse Synapse 1.59.0rc1 (2022-05-10) 2022-05-10 13:17:56 +01:00
synmark Remove redundant "coding: utf-8" lines (#9786) 2021-04-14 15:34:27 +01:00
tests Add the update_user_directory_from_worker configuration option (superseding update_user_directory) to allow a generic worker to be designated as the worker to update the user directory. (#12654) 2022-05-10 11:08:45 +01:00
.codecov.yml Disable codecov reports to GH comments. 2019-07-31 10:56:02 +01:00
.coveragerc Fix coverage in sytest and use plugins for buildkite (#5922) 2019-08-29 22:19:57 +10:00
.dockerignore Dump setuptools; correct pyproject version number (#12478) 2022-04-20 17:33:20 +01:00
.editorconfig Add a basic .editorconfig 2018-12-03 22:38:47 -06:00
.flake8 Prune setup.cfg some more (#12059) 2022-02-22 14:52:56 +00:00
.git-blame-ignore-revs Add a list of hashes to ignore during git blame. (#9560) 2021-03-09 07:34:55 -05:00
.gitignore Dump setuptools; correct pyproject version number (#12478) 2022-04-20 17:33:20 +01:00
AUTHORS.rst Automatically delete empty groups/communities (#6453) 2019-12-16 12:12:40 +00:00
book.toml Compile and render Synapse's docs into a browsable, mobile-friendly and searchable website (#10086) 2021-06-03 17:20:40 +01:00
CHANGES.md other fixes 2022-05-10 11:31:10 +01:00
CONTRIBUTING.md Advertise matrix-org.github.io/synapse docs (#10595) 2021-08-31 11:29:27 +01:00
INSTALL.md Fix broken links in INSTALL.md (#10331) 2021-07-08 15:46:13 +01:00
LICENSE Reference Matrix Home Server 2014-08-12 15:10:52 +01:00
mypy.ini remove constantly lib use and switch to enums. (#12624) 2022-05-04 11:26:11 +00:00
poetry.lock Fix mypy against latest pillow stubs (#12671) 2022-05-09 10:48:14 +00:00
pylint.cfg Added pylint config file: ignore missing-docstring messages. 2014-10-24 10:22:09 +01:00
pyproject.toml 1.59.0rc1 2022-05-10 10:45:13 +01:00
README.rst Fixes to the formatting of README.rst (#12627) 2022-05-04 11:02:19 +01:00
sytest-blacklist Back out implementation of MSC2314 (#12474) 2022-04-19 11:17:29 +00:00
tox.ini Run lints under poetry in CI; remove lint tox jobs (#12434) 2022-04-12 17:35:48 +01:00
UPGRADE.rst fix broken link to upgrade notes (#10631) 2021-08-18 12:38:37 +01:00

=========================================================================
Synapse |support| |development| |documentation| |license| |pypi| |python|
=========================================================================

.. contents::

Introduction
============

Matrix is an ambitious new ecosystem for open federated Instant Messaging and
VoIP.  The basics you need to know to get up and running are:

- Everything in Matrix happens in a room.  Rooms are distributed and do not
  exist on any single server.  Rooms can be located using convenience aliases
  like ``#matrix:matrix.org`` or ``#test:localhost:8448``.

- Matrix user IDs look like ``@matthew:matrix.org`` (although in the future
  you will normally refer to yourself and others using a third party identifier
  (3PID): email address, phone number, etc rather than manipulating Matrix user IDs)

The overall architecture is::

      client <----> homeserver <=====================> homeserver <----> client
             https://somewhere.org/_matrix      https://elsewhere.net/_matrix

``#matrix:matrix.org`` is the official support room for Matrix, and can be
accessed by any client from https://matrix.org/docs/projects/try-matrix-now.html or
via IRC bridge at irc://irc.libera.chat/matrix.

Synapse is currently in rapid development, but as of version 0.5 we believe it
is sufficiently stable to be run as an internet-facing service for real usage!

About Matrix
============

Matrix specifies a set of pragmatic RESTful HTTP JSON APIs as an open standard,
which handle:

- Creating and managing fully distributed chat rooms with no
  single points of control or failure
- Eventually-consistent cryptographically secure synchronisation of room
  state across a global open network of federated servers and services
- Sending and receiving extensible messages in a room with (optional)
  end-to-end encryption
- Inviting, joining, leaving, kicking, banning room members
- Managing user accounts (registration, login, logout)
- Using 3rd Party IDs (3PIDs) such as email addresses, phone numbers,
  Facebook accounts to authenticate, identify and discover users on Matrix.
- Placing 1:1 VoIP and Video calls

These APIs are intended to be implemented on a wide range of servers, services
and clients, letting developers build messaging and VoIP functionality on top
of the entirely open Matrix ecosystem rather than using closed or proprietary
solutions. The hope is for Matrix to act as the building blocks for a new
generation of fully open and interoperable messaging and VoIP apps for the
internet.

Synapse is a Matrix "homeserver" implementation developed by the matrix.org core
team, written in Python 3/Twisted.

In Matrix, every user runs one or more Matrix clients, which connect through to
a Matrix homeserver. The homeserver stores all their personal chat history and
user account information - much as a mail client connects through to an
IMAP/SMTP server. Just like email, you can either run your own Matrix
homeserver and control and own your own communications and history or use one
hosted by someone else (e.g. matrix.org) - there is no single point of control
or mandatory service provider in Matrix, unlike WhatsApp, Facebook, Hangouts,
etc.

We'd like to invite you to join #matrix:matrix.org (via
https://matrix.org/docs/projects/try-matrix-now.html), run a homeserver, take a look
at the `Matrix spec <https://matrix.org/docs/spec>`_, and experiment with the
`APIs <https://matrix.org/docs/api>`_ and `Client SDKs
<https://matrix.org/docs/projects/try-matrix-now.html#client-sdks>`_.

Thanks for using Matrix!

Support
=======

For support installing or managing Synapse, please join |room|_ (from a matrix.org
account if necessary) and ask questions there. We do not use GitHub issues for
support requests, only for bug reports and feature requests.

Synapse's documentation is `nicely rendered on GitHub Pages <https://matrix-org.github.io/synapse>`_,
with its source available in |docs|_.

.. |room| replace:: ``#synapse:matrix.org``
.. _room: https://matrix.to/#/#synapse:matrix.org

.. |docs| replace:: ``docs``
.. _docs: docs

Synapse Installation
====================

.. _federation:

* For details on how to install synapse, see
  `Installation Instructions <https://matrix-org.github.io/synapse/latest/setup/installation.html>`_.
* For specific details on how to configure Synapse for federation see `docs/federate.md <docs/federate.md>`_


Connecting to Synapse from a client
===================================

The easiest way to try out your new Synapse installation is by connecting to it
from a web client.

Unless you are running a test instance of Synapse on your local machine, in
general, you will need to enable TLS support before you can successfully
connect from a client: see
`TLS certificates <https://matrix-org.github.io/synapse/latest/setup/installation.html#tls-certificates>`_.

An easy way to get started is to login or register via Element at
https://app.element.io/#/login or https://app.element.io/#/register respectively.
You will need to change the server you are logging into from ``matrix.org``
and instead specify a Homeserver URL of ``https://<server_name>:8448``
(or just ``https://<server_name>`` if you are using a reverse proxy).
If you prefer to use another client, refer to our
`client breakdown <https://matrix.org/docs/projects/clients-matrix>`_.

If all goes well you should at least be able to log in, create a room, and
start sending messages.

.. _`client-user-reg`:

Registering a new user from a client
------------------------------------

By default, registration of new users via Matrix clients is disabled. To enable
it, specify ``enable_registration: true`` in ``homeserver.yaml``. (It is then
recommended to also set up CAPTCHA - see `<docs/CAPTCHA_SETUP.md>`_.)

Once ``enable_registration`` is set to ``true``, it is possible to register a
user via a Matrix client.

Your new user name will be formed partly from the ``server_name``, and partly
from a localpart you specify when you create the account. Your name will take
the form of::

    @localpart:my.domain.name

(pronounced "at localpart on my dot domain dot name").

As when logging in, you will need to specify a "Custom server".  Specify your
desired ``localpart`` in the 'User name' box.

Security note
=============

Matrix serves raw, user-supplied data in some APIs -- specifically the `content
repository endpoints`_.

.. _content repository endpoints: https://matrix.org/docs/spec/client_server/latest.html#get-matrix-media-r0-download-servername-mediaid

Whilst we make a reasonable effort to mitigate against XSS attacks (for
instance, by using `CSP`_), a Matrix homeserver should not be hosted on a
domain hosting other web applications. This especially applies to sharing
the domain with Matrix web clients and other sensitive applications like
webmail. See
https://developer.github.com/changes/2014-04-25-user-content-security for more
information.

.. _CSP: https://github.com/matrix-org/synapse/pull/1021

Ideally, the homeserver should not simply be on a different subdomain, but on
a completely different `registered domain`_ (also known as top-level site or
eTLD+1). This is because `some attacks`_ are still possible as long as the two
applications share the same registered domain.

.. _registered domain: https://tools.ietf.org/html/draft-ietf-httpbis-rfc6265bis-03#section-2.3

.. _some attacks: https://en.wikipedia.org/wiki/Session_fixation#Attacks_using_cross-subdomain_cookie

To illustrate this with an example, if your Element Web or other sensitive web
application is hosted on ``A.example1.com``, you should ideally host Synapse on
``example2.com``. Some amount of protection is offered by hosting on
``B.example1.com`` instead, so this is also acceptable in some scenarios.
However, you should *not* host your Synapse on ``A.example1.com``.

Note that all of the above refers exclusively to the domain used in Synapse's
``public_baseurl`` setting. In particular, it has no bearing on the domain
mentioned in MXIDs hosted on that server.

Following this advice ensures that even if an XSS is found in Synapse, the
impact to other applications will be minimal.


Upgrading an existing Synapse
=============================

The instructions for upgrading synapse are in `the upgrade notes`_.
Please check these instructions as upgrading may require extra steps for some
versions of synapse.

.. _the upgrade notes: https://matrix-org.github.io/synapse/develop/upgrade.html

.. _reverse-proxy:

Using a reverse proxy with Synapse
==================================

It is recommended to put a reverse proxy such as
`nginx <https://nginx.org/en/docs/http/ngx_http_proxy_module.html>`_,
`Apache <https://httpd.apache.org/docs/current/mod/mod_proxy_http.html>`_,
`Caddy <https://caddyserver.com/docs/quick-starts/reverse-proxy>`_,
`HAProxy <https://www.haproxy.org/>`_ or
`relayd <https://man.openbsd.org/relayd.8>`_ in front of Synapse. One advantage of
doing so is that it means that you can expose the default https port (443) to
Matrix clients without needing to run Synapse with root privileges.

For information on configuring one, see `<docs/reverse_proxy.md>`_.

Identity Servers
================

Identity servers have the job of mapping email addresses and other 3rd Party
IDs (3PIDs) to Matrix user IDs, as well as verifying the ownership of 3PIDs
before creating that mapping.

**They are not where accounts or credentials are stored - these live on home
servers. Identity Servers are just for mapping 3rd party IDs to matrix IDs.**

This process is very security-sensitive, as there is obvious risk of spam if it
is too easy to sign up for Matrix accounts or harvest 3PID data. In the longer
term, we hope to create a decentralised system to manage it (`matrix-doc #712
<https://github.com/matrix-org/matrix-doc/issues/712>`_), but in the meantime,
the role of managing trusted identity in the Matrix ecosystem is farmed out to
a cluster of known trusted ecosystem partners, who run 'Matrix Identity
Servers' such as `Sydent <https://github.com/matrix-org/sydent>`_, whose role
is purely to authenticate and track 3PID logins and publish end-user public
keys.

You can host your own copy of Sydent, but this will prevent you reaching other
users in the Matrix ecosystem via their email address, and prevent them finding
you. We therefore recommend that you use one of the centralised identity servers
at ``https://matrix.org`` or ``https://vector.im`` for now.

To reiterate: the Identity server will only be used if you choose to associate
an email address with your account, or send an invite to another user via their
email address.


Password reset
==============

Users can reset their password through their client. Alternatively, a server admin
can reset a users password using the `admin API <docs/admin_api/user_admin_api.md#reset-password>`_
or by directly editing the database as shown below.

First calculate the hash of the new password::

    $ ~/synapse/env/bin/hash_password
    Password:
    Confirm password:
    $2a$12$xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Then update the ``users`` table in the database::

    UPDATE users SET password_hash='$2a$12$xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
        WHERE name='@test:test.com';


Synapse Development
===================

The best place to get started is our
`guide for contributors <https://matrix-org.github.io/synapse/latest/development/contributing_guide.html>`_.
This is part of our larger `documentation <https://matrix-org.github.io/synapse/latest>`_, which includes
information for synapse developers as well as synapse administrators.

Developers might be particularly interested in:

* `Synapse's database schema <https://matrix-org.github.io/synapse/latest/development/database_schema.html>`_,
* `notes on Synapse's implementation details <https://matrix-org.github.io/synapse/latest/development/internal_documentation/index.html>`_, and
* `how we use git <https://matrix-org.github.io/synapse/latest/development/git.html>`_.

Alongside all that, join our developer community on Matrix:
`#synapse-dev:matrix.org <https://matrix.to/#/#synapse-dev:matrix.org>`_, featuring real humans!


Quick start
-----------

Before setting up a development environment for synapse, make sure you have the
system dependencies (such as the python header files) installed - see
`Platform-specific prerequisites <https://matrix-org.github.io/synapse/latest/setup/installation.html#platform-specific-prerequisites>`_.

To check out a synapse for development, clone the git repo into a working
directory of your choice::

    git clone https://github.com/matrix-org/synapse.git
    cd synapse

Synapse has a number of external dependencies. We maintain a fixed development
environment using `Poetry <https://python-poetry.org/>`_. First, install poetry. We recommend::

    pip install --user pipx
    pipx install poetry

as described `here <https://python-poetry.org/docs/#installing-with-pipx>`_.
(See `poetry's installation docs <https://python-poetry.org/docs/#installation>`_
for other installation methods.) Then ask poetry to create a virtual environment
from the project and install Synapse's dependencies::

    poetry install --extras "all test"

This will run a process of downloading and installing all the needed
dependencies into a virtual env.

We recommend using the demo which starts 3 federated instances running on ports `8080` - `8082`::

    poetry run ./demo/start.sh

(to stop, you can use ``poetry run ./demo/stop.sh``)

See the `demo documentation <https://matrix-org.github.io/synapse/develop/development/demo.html>`_
for more information.

If you just want to start a single instance of the app and run it directly::

    # Create the homeserver.yaml config once
    poetry run synapse_homeserver \
      --server-name my.domain.name \
      --config-path homeserver.yaml \
      --generate-config \
      --report-stats=[yes|no]

    # Start the app
    poetry run synapse_homeserver --config-path homeserver.yaml


Running the unit tests
----------------------

After getting up and running, you may wish to run Synapse's unit tests to
check that everything is installed correctly::

    poetry run trial tests

This should end with a 'PASSED' result (note that exact numbers will
differ)::

    Ran 1337 tests in 716.064s

    PASSED (skips=15, successes=1322)

For more tips on running the unit tests, like running a specific test or
to see the logging output, see the `CONTRIBUTING doc <CONTRIBUTING.md#run-the-unit-tests>`_.


Running the Integration Tests
-----------------------------

Synapse is accompanied by `SyTest <https://github.com/matrix-org/sytest>`_,
a Matrix homeserver integration testing suite, which uses HTTP requests to
access the API as a Matrix client would. It is able to run Synapse directly from
the source tree, so installation of the server is not required.

Testing with SyTest is recommended for verifying that changes related to the
Client-Server API are functioning correctly. See the `SyTest installation
instructions <https://github.com/matrix-org/sytest#installing>`_ for details.


Platform dependencies
=====================

Synapse uses a number of platform dependencies such as Python and PostgreSQL,
and aims to follow supported upstream versions. See the
`<docs/deprecation_policy.md>`_ document for more details.


Troubleshooting
===============

Need help? Join our community support room on Matrix:
`#synapse:matrix.org <https://matrix.to/#/#synapse:matrix.org>`_

Running out of File Handles
---------------------------

If synapse runs out of file handles, it typically fails badly - live-locking
at 100% CPU, and/or failing to accept new TCP connections (blocking the
connecting client).  Matrix currently can legitimately use a lot of file handles,
thanks to busy rooms like #matrix:matrix.org containing hundreds of participating
servers.  The first time a server talks in a room it will try to connect
simultaneously to all participating servers, which could exhaust the available
file descriptors between DNS queries & HTTPS sockets, especially if DNS is slow
to respond. (We need to improve the routing algorithm used to be better than
full mesh, but as of March 2019 this hasn't happened yet).

If you hit this failure mode, we recommend increasing the maximum number of
open file handles to be at least 4096 (assuming a default of 1024 or 256).
This is typically done by editing ``/etc/security/limits.conf``

Separately, Synapse may leak file handles if inbound HTTP requests get stuck
during processing - e.g. blocked behind a lock or talking to a remote server etc.
This is best diagnosed by matching up the 'Received request' and 'Processed request'
log lines and looking for any 'Processed request' lines which take more than
a few seconds to execute. Please let us know at #synapse:matrix.org if
you see this failure mode so we can help debug it, however.

Help!! Synapse is slow and eats all my RAM/CPU!
-----------------------------------------------

First, ensure you are running the latest version of Synapse, using Python 3
with a PostgreSQL database.

Synapse's architecture is quite RAM hungry currently - we deliberately
cache a lot of recent room data and metadata in RAM in order to speed up
common requests. We'll improve this in the future, but for now the easiest
way to either reduce the RAM usage (at the risk of slowing things down)
is to set the almost-undocumented ``SYNAPSE_CACHE_FACTOR`` environment
variable. The default is 0.5, which can be decreased to reduce RAM usage
in memory constrained enviroments, or increased if performance starts to
degrade.

However, degraded performance due to a low cache factor, common on
machines with slow disks, often leads to explosions in memory use due
backlogged requests. In this case, reducing the cache factor will make
things worse. Instead, try increasing it drastically. 2.0 is a good
starting value.

Using `libjemalloc <http://jemalloc.net/>`_ can also yield a significant
improvement in overall memory use, and especially in terms of giving back
RAM to the OS. To use it, the library must simply be put in the
LD_PRELOAD environment variable when launching Synapse. On Debian, this
can be done by installing the ``libjemalloc1`` package and adding this
line to ``/etc/default/matrix-synapse``::

    LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libjemalloc.so.1

This can make a significant difference on Python 2.7 - it's unclear how
much of an improvement it provides on Python 3.x.

If you're encountering high CPU use by the Synapse process itself, you
may be affected by a bug with presence tracking that leads to a
massive excess of outgoing federation requests (see `discussion
<https://github.com/matrix-org/synapse/issues/3971>`_). If metrics
indicate that your server is also issuing far more outgoing federation
requests than can be accounted for by your users' activity, this is a
likely cause. The misbehavior can be worked around by setting
the following in the Synapse config file:

.. code-block:: yaml

   presence:
       enabled: false

People can't accept room invitations from me
--------------------------------------------

The typical failure mode here is that you send an invitation to someone
to join a room or direct chat, but when they go to accept it, they get an
error (typically along the lines of "Invalid signature"). They might see
something like the following in their logs::

    2019-09-11 19:32:04,271 - synapse.federation.transport.server - 288 - WARNING - GET-11752 - authenticate_request failed: 401: Invalid signature for server <server> with key ed25519:a_EqML: Unable to verify signature for <server>

This is normally caused by a misconfiguration in your reverse-proxy. See
`<docs/reverse_proxy.md>`_ and double-check that your settings are correct.

.. |support| image:: https://img.shields.io/matrix/synapse:matrix.org?label=support&logo=matrix
  :alt: (get support on #synapse:matrix.org)
  :target: https://matrix.to/#/#synapse:matrix.org

.. |development| image:: https://img.shields.io/matrix/synapse-dev:matrix.org?label=development&logo=matrix
  :alt: (discuss development on #synapse-dev:matrix.org)
  :target: https://matrix.to/#/#synapse-dev:matrix.org

.. |documentation| image:: https://img.shields.io/badge/documentation-%E2%9C%93-success
  :alt: (Rendered documentation on GitHub Pages)
  :target: https://matrix-org.github.io/synapse/latest/

.. |license| image:: https://img.shields.io/github/license/matrix-org/synapse
  :alt: (check license in LICENSE file)
  :target: LICENSE

.. |pypi| image:: https://img.shields.io/pypi/v/matrix-synapse
  :alt: (latest version released on PyPi)
  :target: https://pypi.org/project/matrix-synapse

.. |python| image:: https://img.shields.io/pypi/pyversions/matrix-synapse
  :alt: (supported python versions)
  :target: https://pypi.org/project/matrix-synapse