Co-authored-by: Richard van der Hoff <1389908+richvdh@users.noreply.github.com>

HAproxy reverse proxy guide update to stop sending IPv4-mapped address to HS.

This should speed up push rule calculations for rooms with large numbers of local users when the main push rule cache fails.

Co-authored-by: reivilibre <oliverw@matrix.org>

It is currently rather hard to see which rooms are causing inbound federation
traffic. Add the room id to the logs.

Refactor `create_new_client_event` to use a new parameter, `state_event_ids`, which accurately describes the usage with MSC2716 instead of abusing `auth_event_ids` (#12083)

Spawned from https://github.com/matrix-org/synapse/pull/10975#discussion_r813183430

Part of [MSC2716](https://github.com/matrix-org/matrix-spec-proposals/pull/2716)

Hopefully this fixes #12257.

Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>

Co-authored-by: Shay <hillerys@element.io>

The `MockHttpResource` and `MockKey` objects were unused
since #9396 (74af356b).

as 3.1.0 removed the deprecated jinja2.Markup class which we still rely on.

This reverts commit 8810c93e.

Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>

Filter the events returned from `/relations` for the requester's ignored users
in a similar way to `/messages` (and `/sync`).

Resolves #10339

Signed-off-by: Nicolas Werner <n.werner@famedly.com>

Co-authored-by: reivilibre <olivier@librepush.net>

* Tweak copy for sso account details template
* Update sso footer copyright year
* Add newsfragment

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

Reword 'Choose your user name' as 'Choose your account name' in the SSO registration template, in order to comply with SIWA guidelines. (#12260)

* Reword as 'Choose your account name'

* Newsfile

Signed-off-by: Olivier Wilkinson (reivilibre) <oliverw@matrix.org>

* Make it possible to enable compression for the metrics HTTP resource

This can provide significant bandwidth savings pulling metrics from
synapse instances.

* Add changelog file.

* Fix type hint