Riot

Riot (formerly known as Vector) is a Matrix web client built using the Matrix
React SDK.

Supported Environments

Riot has several tiers of support for different environments:

• Supported
  • Definition: Issues actively triaged, regressions block the release
  • Last 2 major versions of Chrome, Firefox, and Safari
  • Latest release of official Riot Desktop app on macOS, Windows, and Linux versions that are actively supported by the OS vendor and receive security updates
• Experimental
  • Definition: Issues accepted, regressions do not block the release
  • Riot as an installed PWA via current stable version of Chrome, Firefox, and Safari
  • Mobile web for current stable version of Chrome, Firefox, and Safari on Android, iOS, and iPadOS
• Not supported
  • Definition: Issues only affecting unsupported environments are closed
  • Everything else

For accessing Riot on an Android or iOS device, we currently recommend the
native apps riot-android
and riot-ios.

Getting Started

The easiest way to test Riot is to just use the hosted copy at https://riot.im/app.
The develop branch is continuously deployed by Jenkins at https://riot.im/develop
for those who like living dangerously.

To host your own copy of Riot, the quickest bet is to use a pre-built
released version of Riot:

1. Download the latest version from https://github.com/vector-im/riot-web/releases
2. Untar the tarball on your web server
3. Move (or symlink) the riot-x.x.x directory to an appropriate name
4. Configure the correct caching headers in your webserver (see below)
5. If desired, copy config.sample.json to config.json and edit it
   as desired. See the configuration docs for details.
6. Enter the URL into your browser and log into Riot!

Releases are signed using gpg and the OpenPGP standard, and can be checked against the public key located
at https://packages.riot.im/riot-release-key.asc.

Note that for the security of your chats will need to serve Riot
over HTTPS. Major browsers also do not allow you to use VoIP/video
chats over HTTP, as WebRTC is only usable over HTTPS.
There are some exceptions like when using localhost, which is
considered a secure context
and thus allowed.

To install Riot as a desktop application, see Running as a desktop
app below.

Important Security Note

We do not recommend running Riot from the same domain name as your Matrix
homeserver. The reason is the risk of XSS (cross-site-scripting)
vulnerabilities that could occur if someone caused Riot to load and render
malicious user generated content from a Matrix API which then had trusted
access to Riot (or other apps) due to sharing the same domain.

We have put some coarse mitigations into place to try to protect against this
situation, but it's still not good practice to do it in the first place. See
https://github.com/vector-im/riot-web/issues/1977 for more details.

The same applies for end-to-end encrypted content, but since this is decrypted
on the client, Riot needs a way to supply the decrypted content from a separate
origin to the one Riot is hosted on. This currently done with a 'cross origin
renderer' which is a small piece of javascript hosted on a different domain.
To avoid all Riot installs needing one of these to be set up, riot.im hosts
one on usercontent.riot.im which is used by default.
https://github.com/vector-im/riot-web/issues/6173 tracks progress on replacing
this with something better.

Building From Source

Riot is a modular webapp built with modern ES6 and uses a Node.js build system.
Ensure you have the latest LTS version of Node.js installed.

Using yarn instead of npm is recommended. Please see the Yarn install
guide if you do not have it already.

1. Install or update node.js so that your node is at least v10.x.
2. Install yarn if not present already.
3. Clone the repo: git clone https://github.com/vector-im/riot-web.git.
4. Switch to the riot-web directory: cd riot-web.
5. Install the prerequisites: yarn install.
   • If you're using the develop branch, then it is recommended to set up a
     proper development environment (see Setting up a dev
     environment below). Alternatively, you
     can use https://riot.im/develop - the continuous integration release of
     the develop branch.
6. Configure the app by copying config.sample.json to config.json and
   modifying it. See the configuration docs for details.
7. yarn dist to build a tarball to deploy. Untaring this file will give
   a version-specific directory containing all the files that need to go on your
   web server.

Note that yarn dist is not supported on Windows, so Windows users can run yarn build,
which will build all the necessary files into the webapp directory. The version of Riot
will not appear in Settings without using the dist script. You can then mount the
webapp directory on your webserver to actually serve up the app, which is entirely static content.

Running as a Desktop app

Riot can also be run as a desktop app, wrapped in Electron. You can download a
pre-built version from https://riot.im/download/desktop/ or, if you prefer,
build it yourself.

To build it yourself, follow the instructions below.

1. Follow the instructions in 'Building From Source' above, but run
   yarn build instead of yarn dist (since we don't need the tarball).

2. Install Electron and run it:

   yarn electron
   

To build packages, use electron-builder. This is configured to output:

• dmg + zip for macOS
• exe + nupkg for Windows
• deb for Linux
  But this can be customised by editing the build section of package.json
  as per https://github.com/electron-userland/electron-builder/wiki/Options

See https://github.com/electron-userland/electron-builder/wiki/Multi-Platform-Build
for dependencies required for building packages for various platforms.

The only platform that can build packages for all three platforms is macOS:

brew install mono
yarn install
yarn build:electron

For other packages, use electron-builder manually. For example, to build a
package for 64 bit Linux:

1. Follow the instructions in 'Building From Source' above
2. node_modules/.bin/build -l --x64

All Electron packages go into electron_app/dist/

Many thanks to @aviraldg for the initial work on the Electron integration.

Other options for running as a desktop app:

• @asdf:matrix.org points out that you can use nativefier and it just works(tm)

yarn global add nativefier
nativefier https://riot.im/app/

The configuration docs show how to
override the desktop app's default settings if desired.

Running from Docker

The Docker image can be used to serve riot-web as a web server. The easiest way to use
it is to use the prebuilt image:

docker run -p 80:80 vectorim/riot-web

To supply your own custom config.json, map a volume to /app/config.json. For example,
if your custom config was located at /etc/riot-web/config.json then your Docker command
would be:

docker run -p 80:80 -v /etc/riot-web/config.json:/app/config.json vectorim/riot-web

To build the image yourself:

git clone https://github.com/vector-im/riot-web.git riot-web
cd riot-web
git checkout master
docker build -t vectorim/riot-web .

If you're building a custom branch, or want to use the develop branch, check out the appropriate
riot-web branch and then run:

docker build -t vectorim/riot-web:develop \
    --build-arg USE_CUSTOM_SDKS=true \
    --build-arg REACT_SDK_REPO="https://github.com/matrix-org/matrix-react-sdk.git" \
    --build-arg REACT_SDK_BRANCH="develop" \
    --build-arg JS_SDK_REPO="https://github.com/matrix-org/matrix-js-sdk.git" \
    --build-arg JS_SDK_BRANCH="develop" \
    .

config.json

Riot supports a variety of settings to configure default servers, behaviour, themes, etc.
See the configuration docs for more details.

Labs Features

Some features of Riot may be enabled by flags in the Labs section of the settings.
Some of these features are described in labs.md.

Caching requirements

Riot requires the following URLs not to be cached, when/if you are serving Riot from your own webserver:

/config.*.json
/i18n
/home
/sites
/index.html

Development

Before attempting to develop on Riot you must read the developer guide
for matrix-react-sdk, which
also defines the design, architecture and style for Riot too.

You should also familiarise yourself with the "Here be Dragons" guide

to the tame & not-so-tame dragons (gotchas) which exist in the codebase.

The idea of Riot is to be a relatively lightweight "skin" of customisations on
top of the underlying matrix-react-sdk. matrix-react-sdk provides both the
higher and lower level React components useful for building Matrix communication
apps using React.

After creating a new component you must run yarn reskindex to regenerate
the component-index.js for the app (used in future for skinning).

Please note that Riot is intended to run correctly without access to the public
internet. So please don't depend on resources (JS libs, CSS, images, fonts)
hosted by external CDNs or servers but instead please package all dependencies
into Riot itself.

Setting up a dev environment

Much of the functionality in Riot is actually in the matrix-react-sdk and
matrix-js-sdk modules. It is possible to set these up in a way that makes it
easy to track the develop branches in git and to make local changes without
having to manually rebuild each time.

First clone and build matrix-js-sdk:

git clone https://github.com/matrix-org/matrix-js-sdk.git
pushd matrix-js-sdk
git checkout develop
yarn link
yarn install
popd

Then similarly with matrix-react-sdk:

git clone https://github.com/matrix-org/matrix-react-sdk.git
pushd matrix-react-sdk
git checkout develop
yarn link
yarn link matrix-js-sdk
yarn install
popd

Finally, build and start Riot itself:

git clone https://github.com/vector-im/riot-web.git
cd riot-web
git checkout develop
yarn link matrix-js-sdk
yarn link matrix-react-sdk
yarn install
yarn start

Wait a few seconds for the initial build to finish; you should see something like:

Hash: b0af76309dd56d7275c8
Version: webpack 1.12.14
Time: 14533ms
         Asset     Size  Chunks             Chunk Names
     bundle.js   4.2 MB       0  [emitted]  main
    bundle.css  91.5 kB       0  [emitted]  main
 bundle.js.map  5.29 MB       0  [emitted]  main
bundle.css.map   116 kB       0  [emitted]  main
    + 1013 hidden modules

Remember, the command will not terminate since it runs the web server
and rebuilds source files when they change. This development server also
disables caching, so do NOT use it in production.

Configure the app by copying config.sample.json to config.json and
modifying it. See the configuration docs for details.

Open http://127.0.0.1:8080/ in your browser to see your newly built Riot.

When you make changes to matrix-react-sdk or matrix-js-sdk they should be
automatically picked up by webpack and built.

If you add or remove any components from the Riot skin, you will need to rebuild
the skin's index by running, yarn reskindex.

If any of these steps error with, file table overflow, you are probably on a mac
which has a very low limit on max open files. Run ulimit -Sn 1024 and try again.
You'll need to do this in each new terminal you open before building Riot.

Running the tests

There are a number of application-level tests in the tests directory; these
are designed to run in a browser instance under the control of
karma. To run them:

• Make sure you have Chrome installed (a recent version, like 59)
• Make sure you have matrix-js-sdk and matrix-react-sdk installed and
  built, as above
• yarn test

The above will run the tests under Chrome in a headless mode.

You can also tell karma to run the tests in a loop (every time the source
changes), in an instance of Chrome on your desktop, with yarn test-multi. This also gives you the option of running the tests in 'debug'
mode, which is useful for stepping through the tests in the developer tools.

End-to-End tests

See matrix-react-sdk how to run the end-to-end tests.

Translations

To add a new translation, head to the translating doc.

For a developer guide, see the translating dev doc.

Triaging issues

Issues will be triaged by the core team using the below set of tags.

Tags are meant to be used in combination - e.g.:

• P1 critical bug == really urgent stuff that should be next in the bugfixing todo list
• "release blocker" == stuff which is blocking us from cutting the next release.
• P1 feature type:voip == what VoIP features should we be working on next?

priority: compulsory

• P1: top priority - i.e. pool of stuff which we should be working on next
• P2: still need to fix, but lower than P1
• P3: non-urgent
• P4: interesting idea - bluesky some day
• P5: recorded for posterity/to avoid duplicates. No intention to resolves right now.

bug or feature: compulsory

• bug
• feature

bug severity: compulsory, if bug

• critical - whole app doesn't work
• major - entire feature doesn't work
• minor - partially broken feature (but still usable)
• cosmetic - feature works functionally but UI/UX is broken

types

• type:* - refers to a particular part of the app; used to filter bugs
  on a given topic - e.g. VOIP, signup, timeline, etc.

additional categories (self-explanatory):

• release blocker
• ui/ux (think of this as cosmetic)
• network (specific to network conditions)
• platform specific
• accessibility
• maintenance
• performance
• i18n
• blocked - whether this issue currently can't be progressed due to outside factors

community engagement

• easy
• hacktoberfest
• bounty? - proposal to be included in a bounty programme
• bounty - included in Status Open Bounty