Merge branch 'develop' into rav/saml2_client

7 files changed, 250 insertions, 157 deletions

diff --git a/docs/MSC1711_certificates_FAQ.md b/docs/MSC1711_certificates_FAQ.md
index 599462bdcb..83497380df 100644
--- a/docs/MSC1711_certificates_FAQ.md
+++ b/docs/MSC1711_certificates_FAQ.md
@@ -1,5 +1,22 @@
 # MSC1711 Certificates FAQ
 
+## Historical Note
+This document was originally written to guide server admins through the upgrade
+path towards Synapse 1.0. Specifically,
+[MSC1711](https://github.com/matrix-org/matrix-doc/blob/master/proposals/1711-x509-for-federation.md)
+required that all servers present valid TLS certificates on their federation
+API. Admins were encouraged to achieve compliance from version 0.99.0 (released
+in February 2019) ahead of version 1.0 (released June 2019) enforcing the
+certificate checks.
+
+Much of what follows is now outdated since most admins will have already
+upgraded, however it may be of use to those with old installs returning to the
+project.
+
+If you are setting up a server from scratch you almost certainly should look at
+the [installation guide](../INSTALL.md) instead.
+
+## Introduction
 The goal of Synapse 0.99.0 is to act as a stepping stone to Synapse 1.0.0. It
 supports the r0.1 release of the server to server specification, but is
 compatible with both the legacy Matrix federation behaviour (pre-r0.1) as well
diff --git a/docs/code_style.rst b/docs/code_style.rst
index 62800b5b3e..e3ca626bfd 100644
--- a/docs/code_style.rst
+++ b/docs/code_style.rst
@@ -1,70 +1,67 @@
-- Everything should comply with PEP8. Code should pass
-  ``pep8 --max-line-length=100`` without any warnings.
+# Code Style
 
-- **Indenting**:
+The Synapse codebase uses a number of code formatting tools in order to
+quickly and automatically check for formatting (and sometimes logical) errors
+in code.
 
-  - NEVER tabs. 4 spaces to indent.
+The necessary tools are detailed below.
 
-  - follow PEP8; either hanging indent or multiline-visual indent depending
-    on the size and shape of the arguments and what makes more sense to the
-    author. In other words, both this::
+## Formatting tools
 
-      print("I am a fish %s" % "moo")
+The Synapse codebase uses [black](https://pypi.org/project/black/) as an
+opinionated code formatter, ensuring all comitted code is properly
+formatted.
 
-    and this::
+First install ``black`` with::
 
-      print("I am a fish %s" %
-            "moo")
+  pip install --upgrade black
 
-    and this::
+Have ``black`` auto-format your code (it shouldn't change any
+functionality) with::
 
-        print(
-            "I am a fish %s" %
-            "moo",
-        )
+  black . --exclude="\.tox|build|env"
 
-    ...are valid, although given each one takes up 2x more vertical space than
-    the previous, it's up to the author's discretion as to which layout makes
-    most sense for their function invocation.  (e.g. if they want to add
-    comments per-argument, or put expressions in the arguments, or group
-    related arguments together, or want to deliberately extend or preserve
-    vertical/horizontal space)
+- **flake8**
 
-- **Line length**:
+  ``flake8`` is a code checking tool. We require code to pass ``flake8`` before being merged into the codebase.
 
-  Max line length is 79 chars (with flexibility to overflow by a "few chars" if
-  the overflowing content is not semantically significant and avoids an
-  explosion of vertical whitespace).
+  Install ``flake8`` with::
 
-  Use parentheses instead of ``\`` for line continuation where ever possible
-  (which is pretty much everywhere).
+    pip install --upgrade flake8
 
-- **Naming**:
+  Check all application and test code with::
 
-  - Use camel case for class and type names
-  - Use underscores for functions and variables.
+    flake8 synapse tests
 
-- Use double quotes ``"foo"`` rather than single quotes ``'foo'``.
+- **isort**
+
+  ``isort`` ensures imports are nicely formatted, and can suggest and
+  auto-fix issues such as double-importing.
 
-- **Blank lines**:
+  Install ``isort`` with::
 
-  - There should be max a single new line between:
+    pip install --upgrade isort
 
-    - statements
-    - functions in a class
+  Auto-fix imports with::
 
-  - There should be two new lines between:
+    isort -rc synapse tests
 
-    - definitions in a module (e.g., between different classes)
+  ``-rc`` means to recursively search the given directories.
 
-- **Whitespace**:
+It's worth noting that modern IDEs and text editors can run these tools
+automatically on save. It may be worth looking into whether this
+functionality is supported in your editor for a more convenient development
+workflow. It is not, however, recommended to run ``flake8`` on save as it
+takes a while and is very resource intensive.
 
-  There should be spaces where spaces should be and not where there shouldn't
-  be:
+## General rules
 
-  - a single space after a comma
-  - a single space before and after for '=' when used as assignment
-  - no spaces before and after for '=' for default values and keyword arguments.
+- **Naming**:
+
+  - Use camel case for class and type names
+  - Use underscores for functions and variables.
+
+- Use double quotes ``"foo"`` rather than single quotes ``'foo'``.
 
 - **Comments**: should follow the `google code style
   <http://google.github.io/styleguide/pyguide.html?showone=Comments#Comments>`_.
@@ -76,7 +73,7 @@
 
 - **Imports**:
 
-  - Prefer to import classes and functions than packages or modules.
+  - Prefer to import classes and functions rather than packages or modules.
 
     Example::
 
diff --git a/docs/federate.md b/docs/federate.md
index b7fc09661c..6d6bb85e15 100644
--- a/docs/federate.md
+++ b/docs/federate.md
@@ -14,9 +14,9 @@ up and will work provided you set the ``server_name`` to match your
 machine's public DNS hostname, and provide Synapse with a TLS certificate
 which is valid for your ``server_name``.
 
-Once you have completed the steps necessary to federate, you should be able to 
-join a room via federation. (A good place to start is ``#synapse:matrix.org`` - a 
-room for Synapse admins.)
+Once federation has been configured, you should be able to join a room over
+federation. A good place to start is ``#synapse:matrix.org`` - a room for
+Synapse admins.
 
 
 ## Delegation
@@ -98,6 +98,77 @@ _matrix._tcp.<server_name>``. In our example, we would expect this:
 Note that the target of a SRV record cannot be an alias (CNAME record): it has to point
 directly to the server hosting the synapse instance.
 
+### Delegation FAQ
+#### When do I need a SRV record or .well-known URI?
+
+If your homeserver listens on the default federation port (8448), and your
+`server_name` points to the host that your homeserver runs on, you do not need an SRV
+record or `.well-known/matrix/server` URI.
+
+For instance, if you registered `example.com` and pointed its DNS A record at a
+fresh server, you could install Synapse on that host,
+giving it a `server_name` of `example.com`, and once [ACME](acme.md) support is enabled,
+it would automatically generate a valid TLS certificate for you via Let's Encrypt
+and no SRV record or .well-known URI would be needed.
+
+This is the common case, although you can add an SRV record or
+`.well-known/matrix/server` URI for completeness if you wish.
+
+**However**, if your server does not listen on port 8448, or if your `server_name`
+does not point to the host that your homeserver runs on, you will need to let
+other servers know how to find it. The way to do this is via .well-known or an
+SRV record.
+
+#### I have created a .well-known URI. Do I still need an SRV record?
+
+As of Synapse 0.99, Synapse will first check for the existence of a .well-known
+URI and follow any delegation it suggests. It will only then check for the
+existence of an SRV record.
+
+That means that the SRV record will often be redundant. However, you should
+remember that there may still be older versions of Synapse in the federation
+which do not understand .well-known URIs, so if you removed your SRV record
+you would no longer be able to federate with them.
+
+It is therefore best to leave the SRV record in place for now. Synapse 0.34 and
+earlier will follow the SRV record (and not care about the invalid
+certificate). Synapse 0.99 and later will follow the .well-known URI, with the
+correct certificate chain.
+
+#### Can I manage my own certificates rather than having Synapse renew certificates itself?
+
+Yes, you are welcome to manage your certificates yourself. Synapse will only
+attempt to obtain certificates from Let's Encrypt if you configure it to do
+so.The only requirement is that there is a valid TLS cert present for
+federation end points.
+
+#### Do you still recommend against using a reverse proxy on the federation port?
+
+We no longer actively recommend against using a reverse proxy. Many admins will
+find it easier to direct federation traffic to a reverse proxy and manage their
+own TLS certificates, and this is a supported configuration.
+
+See [reverse_proxy.rst](reverse_proxy.rst) for information on setting up a
+reverse proxy.
+
+#### Do I still need to give my TLS certificates to Synapse if I am using a reverse proxy?
+
+Practically speaking, this is no longer necessary.
+
+If you are using a reverse proxy for all of your TLS traffic, then you can set
+`no_tls: True` in the Synapse config. In that case, the only reason Synapse
+needs the certificate is to populate a legacy `tls_fingerprints` field in the
+federation API. This is ignored by Synapse 0.99.0 and later, and the only time
+pre-0.99 Synapses will check it is when attempting to fetch the server keys -
+and generally this is delegated via `matrix.org`, which will be running a modern
+version of Synapse.
+
+#### Do I need the same certificate for the client and federation port?
+
+No. There is nothing stopping you from using different certificates,
+particularly if you are using a reverse proxy. However, Synapse will use the
+same certificate on any ports where TLS is configured.
+
 ## Troubleshooting
 
 You can use the [federation tester](
diff --git a/docs/postgres.rst b/docs/postgres.rst
index e81e10403f..33f58e3ace 100644
--- a/docs/postgres.rst
+++ b/docs/postgres.rst
@@ -1,7 +1,7 @@
 Using Postgres
 --------------
 
-Postgres version 9.4 or later is known to work.
+Postgres version 9.5 or later is known to work.
 
 Install postgres client libraries
 =================================
@@ -16,7 +16,7 @@ a postgres database.
 * For other pre-built packages, please consult the documentation from the
   relevant package.
 
-* If you installed synapse `in a virtualenv 
+* If you installed synapse `in a virtualenv
   <../INSTALL.md#installing-from-source>`_, you can install the library with::
 
       ~/synapse/env/bin/pip install matrix-synapse[postgres]
diff --git a/docs/sample_config.yaml b/docs/sample_config.yaml
index 4d7e6f3eb5..da10788e96 100644
--- a/docs/sample_config.yaml
+++ b/docs/sample_config.yaml
@@ -23,29 +23,6 @@ server_name: "SERVERNAME"
 #
 pid_file: DATADIR/homeserver.pid
 
-# CPU affinity mask. Setting this restricts the CPUs on which the
-# process will be scheduled. It is represented as a bitmask, with the
-# lowest order bit corresponding to the first logical CPU and the
-# highest order bit corresponding to the last logical CPU. Not all CPUs
-# may exist on a given system but a mask may specify more CPUs than are
-# present.
-#
-# For example:
-#    0x00000001  is processor #0,
-#    0x00000003  is processors #0 and #1,
-#    0xFFFFFFFF  is all processors (#0 through #31).
-#
-# Pinning a Python process to a single CPU is desirable, because Python
-# is inherently single-threaded due to the GIL, and can suffer a
-# 30-40% slowdown due to cache blow-out and thread context switching
-# if the scheduler happens to schedule the underlying threads across
-# different cores. See
-# https://www.mirantis.com/blog/improve-performance-python-programs-restricting-single-cpu/.
-#
-# This setting requires the affinity package to be installed!
-#
-#cpu_affinity: 0xFFFFFFFF
-
 # The path to the web client which will be served at /_matrix/client/
 # if 'webclient' is configured under the 'listeners' configuration.
 #
@@ -77,11 +54,15 @@ pid_file: DATADIR/homeserver.pid
 #
 #require_auth_for_profile_requests: true
 
-# If set to 'true', requires authentication to access the server's
-# public rooms directory through the client API, and forbids any other
-# homeserver to fetch it via federation. Defaults to 'false'.
+# If set to 'false', requires authentication to access the server's public rooms
+# directory through the client API. Defaults to 'true'.
+#
+#allow_public_rooms_without_auth: false
+
+# If set to 'false', forbids any other homeserver to fetch the server's public
+# rooms directory via federation. Defaults to 'true'.
 #
-#restrict_public_rooms_to_local_users: true
+#allow_public_rooms_over_federation: false
 
 # The default room version for newly created rooms.
 #
@@ -232,7 +213,7 @@ listeners:
       - names: [client, federation]
         compress: false
 
-    # example additonal_resources:
+    # example additional_resources:
     #
     #additional_resources:
     #  "/_matrix/my/custom/endpoint":
@@ -425,6 +406,13 @@ acme:
     #
     #domain: matrix.example.com
 
+    # file to use for the account key. This will be generated if it doesn't
+    # exist.
+    #
+    # If unspecified, we will use CONFDIR/client.key.
+    #
+    account_key_file: DATADIR/acme_account.key
+
 # List of allowed TLS fingerprints for this server to publish along
 # with the signing keys for this server. Other matrix servers that
 # make HTTPS requests to this server will check that the TLS
@@ -1351,3 +1339,16 @@ password_config:
 #    alias: "*"
 #    room_id: "*"
 #    action: allow
+
+
+# Server admins can define a Python module that implements extra rules for
+# allowing or denying incoming events. In order to work, this module needs to
+# override the methods defined in synapse/events/third_party_rules.py.
+#
+# This feature is designed to be used in closed federations only, where each
+# participating server enforces the same rules.
+#
+#third_party_event_rules:
+#  module: "my_custom_project.SuperRulesSet"
+#  config:
+#    example_option: 'things'
diff --git a/docs/sphinx/conf.py b/docs/sphinx/conf.py
index 0b15bd8912..ca4b879526 100644
--- a/docs/sphinx/conf.py
+++ b/docs/sphinx/conf.py
@@ -18,226 +18,220 @@ import os
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
-sys.path.insert(0, os.path.abspath('..'))
+sys.path.insert(0, os.path.abspath(".."))
 
 # -- General configuration ------------------------------------------------
 
 # If your documentation needs a minimal Sphinx version, state it here.
-#needs_sphinx = '1.0'
+# needs_sphinx = '1.0'
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
-    'sphinx.ext.autodoc',
-    'sphinx.ext.intersphinx',
-    'sphinx.ext.coverage',
-    'sphinx.ext.ifconfig',
-    'sphinxcontrib.napoleon',
+    "sphinx.ext.autodoc",
+    "sphinx.ext.intersphinx",
+    "sphinx.ext.coverage",
+    "sphinx.ext.ifconfig",
+    "sphinxcontrib.napoleon",
 ]
 
 # Add any paths that contain templates here, relative to this directory.
-templates_path = ['_templates']
+templates_path = ["_templates"]
 
 # The suffix of source filenames.
-source_suffix = '.rst'
+source_suffix = ".rst"
 
 # The encoding of source files.
-#source_encoding = 'utf-8-sig'
+# source_encoding = 'utf-8-sig'
 
 # The master toctree document.
-master_doc = 'index'
+master_doc = "index"
 
 # General information about the project.
-project = u'Synapse'
-copyright = u'Copyright 2014-2017 OpenMarket Ltd, 2017 Vector Creations Ltd, 2017 New Vector Ltd'
+project = "Synapse"
+copyright = (
+    "Copyright 2014-2017 OpenMarket Ltd, 2017 Vector Creations Ltd, 2017 New Vector Ltd"
+)
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-version = '1.0'
+version = "1.0"
 # The full version, including alpha/beta/rc tags.
-release = '1.0'
+release = "1.0"
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
-#language = None
+# language = None
 
 # There are two options for replacing |today|: either, you set today to some
 # non-false value, then it is used:
-#today = ''
+# today = ''
 # Else, today_fmt is used as the format for a strftime call.
-#today_fmt = '%B %d, %Y'
+# today_fmt = '%B %d, %Y'
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
-exclude_patterns = ['_build']
+exclude_patterns = ["_build"]
 
 # The reST default role (used for this markup: `text`) to use for all
 # documents.
-#default_role = None
+# default_role = None
 
 # If true, '()' will be appended to :func: etc. cross-reference text.
-#add_function_parentheses = True
+# add_function_parentheses = True
 
 # If true, the current module name will be prepended to all description
 # unit titles (such as .. function::).
-#add_module_names = True
+# add_module_names = True
 
 # If true, sectionauthor and moduleauthor directives will be shown in the
 # output. They are ignored by default.
-#show_authors = False
+# show_authors = False
 
 # The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
+pygments_style = "sphinx"
 
 # A list of ignored prefixes for module index sorting.
-#modindex_common_prefix = []
+# modindex_common_prefix = []
 
 # If true, keep warnings as "system message" paragraphs in the built documents.
-#keep_warnings = False
+# keep_warnings = False
 
 
 # -- Options for HTML output ----------------------------------------------
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'default'
+html_theme = "default"
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the
 # documentation.
-#html_theme_options = {}
+# html_theme_options = {}
 
 # Add any paths that contain custom themes here, relative to this directory.
-#html_theme_path = []
+# html_theme_path = []
 
 # The name for this set of Sphinx documents.  If None, it defaults to
 # "<project> v<release> documentation".
-#html_title = None
+# html_title = None
 
 # A shorter title for the navigation bar.  Default is the same as html_title.
-#html_short_title = None
+# html_short_title = None
 
 # The name of an image file (relative to this directory) to place at the top
 # of the sidebar.
-#html_logo = None
+# html_logo = None
 
 # The name of an image file (within the static path) to use as favicon of the
 # docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
 # pixels large.
-#html_favicon = None
+# html_favicon = None
 
 # Add any paths that contain custom static files (such as style sheets) here,
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['_static']
+html_static_path = ["_static"]
 
 # Add any extra paths that contain custom files (such as robots.txt or
 # .htaccess) here, relative to this directory. These files are copied
 # directly to the root of the documentation.
-#html_extra_path = []
+# html_extra_path = []
 
 # If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
 # using the given strftime format.
-#html_last_updated_fmt = '%b %d, %Y'
+# html_last_updated_fmt = '%b %d, %Y'
 
 # If true, SmartyPants will be used to convert quotes and dashes to
 # typographically correct entities.
-#html_use_smartypants = True
+# html_use_smartypants = True
 
 # Custom sidebar templates, maps document names to template names.
-#html_sidebars = {}
+# html_sidebars = {}
 
 # Additional templates that should be rendered to pages, maps page names to
 # template names.
-#html_additional_pages = {}
+# html_additional_pages = {}
 
 # If false, no module index is generated.
-#html_domain_indices = True
+# html_domain_indices = True
 
 # If false, no index is generated.
-#html_use_index = True
+# html_use_index = True
 
 # If true, the index is split into individual pages for each letter.
-#html_split_index = False
+# html_split_index = False
 
 # If true, links to the reST sources are added to the pages.
-#html_show_sourcelink = True
+# html_show_sourcelink = True
 
 # If true, "Created using Sphinx" is shown in the HTML footer. Default is True.
-#html_show_sphinx = True
+# html_show_sphinx = True
 
 # If true, "(C) Copyright ..." is shown in the HTML footer. Default is True.
-#html_show_copyright = True
+# html_show_copyright = True
 
 # If true, an OpenSearch description file will be output, and all pages will
 # contain a <link> tag referring to it.  The value of this option must be the
 # base URL from which the finished HTML is served.
-#html_use_opensearch = ''
+# html_use_opensearch = ''
 
 # This is the file name suffix for HTML files (e.g. ".xhtml").
-#html_file_suffix = None
+# html_file_suffix = None
 
 # Output file base name for HTML help builder.
-htmlhelp_basename = 'Synapsedoc'
+htmlhelp_basename = "Synapsedoc"
 
 
 # -- Options for LaTeX output ---------------------------------------------
 
 latex_elements = {
-# The paper size ('letterpaper' or 'a4paper').
-#'papersize': 'letterpaper',
-
-# The font size ('10pt', '11pt' or '12pt').
-#'pointsize': '10pt',
-
-# Additional stuff for the LaTeX preamble.
-#'preamble': '',
+    # The paper size ('letterpaper' or 'a4paper').
+    #'papersize': 'letterpaper',
+    # The font size ('10pt', '11pt' or '12pt').
+    #'pointsize': '10pt',
+    # Additional stuff for the LaTeX preamble.
+    #'preamble': '',
 }
 
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).
-latex_documents = [
-  ('index', 'Synapse.tex', u'Synapse Documentation',
-   u'TNG', 'manual'),
-]
+latex_documents = [("index", "Synapse.tex", "Synapse Documentation", "TNG", "manual")]
 
 # The name of an image file (relative to this directory) to place at the top of
 # the title page.
-#latex_logo = None
+# latex_logo = None
 
 # For "manual" documents, if this is true, then toplevel headings are parts,
 # not chapters.
-#latex_use_parts = False
+# latex_use_parts = False
 
 # If true, show page references after internal links.
-#latex_show_pagerefs = False
+# latex_show_pagerefs = False
 
 # If true, show URL addresses after external links.
-#latex_show_urls = False
+# latex_show_urls = False
 
 # Documents to append as an appendix to all manuals.
-#latex_appendices = []
+# latex_appendices = []
 
 # If false, no module index is generated.
-#latex_domain_indices = True
+# latex_domain_indices = True
 
 
 # -- Options for manual page output ---------------------------------------
 
 # One entry per manual page. List of tuples
 # (source start file, name, description, authors, manual section).
-man_pages = [
-    ('index', 'synapse', u'Synapse Documentation',
-     [u'TNG'], 1)
-]
+man_pages = [("index", "synapse", "Synapse Documentation", ["TNG"], 1)]
 
 # If true, show URL addresses after external links.
-#man_show_urls = False
+# man_show_urls = False
 
 
 # -- Options for Texinfo output -------------------------------------------
@@ -246,26 +240,32 @@ man_pages = [
 # (source start file, target name, title, author,
 #  dir menu entry, description, category)
 texinfo_documents = [
-  ('index', 'Synapse', u'Synapse Documentation',
-   u'TNG', 'Synapse', 'One line description of project.',
-   'Miscellaneous'),
+    (
+        "index",
+        "Synapse",
+        "Synapse Documentation",
+        "TNG",
+        "Synapse",
+        "One line description of project.",
+        "Miscellaneous",
+    )
 ]
 
 # Documents to append as an appendix to all manuals.
-#texinfo_appendices = []
+# texinfo_appendices = []
 
 # If false, no module index is generated.
-#texinfo_domain_indices = True
+# texinfo_domain_indices = True
 
 # How to display URL addresses: 'footnote', 'no', or 'inline'.
-#texinfo_show_urls = 'footnote'
+# texinfo_show_urls = 'footnote'
 
 # If true, do not generate a @detailmenu in the "Top" node's menu.
-#texinfo_no_detailmenu = False
+# texinfo_no_detailmenu = False
 
 
 # Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {'http://docs.python.org/': None}
+intersphinx_mapping = {"http://docs.python.org/": None}
 
 napoleon_include_special_with_doc = True
 napoleon_use_ivar = True
diff --git a/docs/workers.rst b/docs/workers.rst
index aa4e7a120b..7b2d2db533 100644
--- a/docs/workers.rst
+++ b/docs/workers.rst
@@ -239,6 +239,13 @@ be routed to the same instance::
 
     ^/_matrix/client/(r0|unstable)/register$
 
+Pagination requests can also be handled, but all requests with the same path
+room must be routed to the same instance. Additionally, care must be taken to
+ensure that the purge history admin API is not used while pagination requests
+for the room are in flight::
+
+    ^/_matrix/client/(api/v1|r0|unstable)/rooms/.*/messages$
+
 
 ``synapse.app.user_dir``
 ~~~~~~~~~~~~~~~~~~~~~~~~