docs, default configs, comments. Nothing very significant.

* Expose `return_html_error`, and allow it to take a Jinja2 template instead of a raw string

* Clean up exception handling in SAML2ResponseResource

  * use the existing code in `return_html_error` instead of re-implementing it
    (giving it a jinja2 template rather than inventing a new form of template)

  * do the exception-catching in the REST layer rather than in the handler
    layer, to make sure we catch all exceptions.

Signed-off-by: Christopher Cooper <cooperc@ocf.berkeley.edu>

'client_auth_method' commented out value was erronously 'client_auth_basic',
when code and docstring says it should be 'client_secret_basic'.

Signed-off-by: Jason Robinson <jasonr@matrix.org>

This mostly applise to `*stateGroupCache*` and co.

Broke in #6391.

consistency ftw

also a small clarification to nginx

The specific headers that are passed using this new configuration format
are Host and X-Forwarded-For, which should be all that's required.

Note that for production another matcher should be added in the first
section to properly handle the base_url lookup:
reverse_proxy /.well-known/matrix/* http://localhost:8008



Signed-off-by: Jeff Peeler <jpeeler@gmail.com>

* general updates to CONTRIBUTING.md
* notes on updating your PR
* Notes on squash-merging or otherwise
* document git branching model

Add dummy_events_threshold which allows configuring the number of forward extremities a room needs for Synapse to send forward extremities in it.

a couple of cleanups

This is primarily for allowing us to send those commands from workers, but for now simply allows us to ignore echoed RDATA/POSITION commands that we sent (we get echoes of sent commands when using redis). Currently we log a WARNING on the master process every time we receive an echoed RDATA.

Signed-off-by: Manuel Stahl <manuel.stahl@awesome-technologies.de>

It doesn't seem to be documented anywhere and means that you suddenly start losing metrics without any obvious reason when you go from monolith to workers (e.g. #7312).

Signed-off-by: Simon Körner <git@lubiland.de>

This reverts commit 1adf6a55.

This reverts commit 6f431936, reversing
changes made to 0d775fcc.

Long story short: if we're handling presence on the current worker, we shouldn't be sending USER_SYNC commands over replication.

In an attempt to figure out what is going on here, I ended up refactoring some bits of the presencehandler code, so the first 4 commits here are non-functional refactors to move this code slightly closer to sanity. (There's still plenty to do here :/). Suggest reviewing individual commits.

Fixes (I hope) #7257.

Adds a request_token_inhibit_errors configuration flag (disabled by
default) which, if enabled, change the behaviour of all /requestToken
endpoints so that they return a 200 and a fake sid if the 3PID was/was
not found associated with an account (depending on the endpoint),
instead of an error.

Co-Authored-By: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>

Also adjust sample_config.yaml

Signed-off-by: Lars Franke <frcl@mailbox.org>