--- title: P2P Matrix nav_exclude: true --- # P2P Matrix These are the instructions for setting up P2P Dendrite, current as of May 2020. There's both Go stuff and JS stuff to do to set this up. ## Dendrite ### Build - The `main` branch has a WASM-only binary for dendrite: `./cmd/dendritejs`. - Build it and copy assets to riot-web. ``` ./build-dendritejs.sh cp bin/main.wasm ../riot-web/src/vector/dendrite.wasm ``` ### Test To check that the Dendrite side is working well as Wasm, you can run the Wasm-specific tests: ``` ./test-dendritejs.sh ``` ## Rendezvous This is how peers discover each other and communicate. By default, Dendrite uses the Matrix-hosted websocket star relay server at TODO `/dns4/ws-star.discovery.libp2p.io/tcp/443/wss/p2p-websocket-star`. This is currently hard-coded in `./cmd/dendritejs/main.go` - you can also use a local one if you run your own relay: ``` npm install --global libp2p-websocket-star-rendezvous rendezvous --port=9090 --host=127.0.0.1 ``` Then use `/ip4/127.0.0.1/tcp/9090/ws/p2p-websocket-star/`. ## Riot-web You need to check out this repo: ``` git clone git@github.com:matrix-org/go-http-js-libp2p.git ``` Make sure to `yarn install` in the repo. Then: - `$ cp "$(go env GOROOT)/misc/wasm/wasm_exec.js" ./src/vector/` - Comment out the lines in `wasm_exec.js` which contains: ``` if (!global.fs && global.require) { global.fs = require("fs"); } ``` - Add the diff at - ignore the `package.json` stuff. - Add the following symlinks: they HAVE to be symlinks as the diff in `webpack.config.js` references specific paths. ``` cd node_modules ln -s ../../go-http-js-libp2p ``` NB: If you don't run the server with `yarn start` you need to make sure your server is sending the header `Service-Worker-Allowed: /`. TODO: Make a Docker image with all of this in it and a volume mount for `dendrite.wasm`. ## Running You need a Chrome and a Firefox running to test locally as service workers don't work in incognito tabs. - For Chrome, use `chrome://serviceworker-internals/` to unregister/see logs. - For Firefox, use `about:debugging#/runtime/this-firefox` to unregister. Use the console window to see logs. Assuming you've `yarn start`ed Riot-Web, go to `http://localhost:8080` and register with `http://localhost:8080` as your HS URL. You can: - join rooms by room alias e.g `/join #foo:bar`. - invite specific users to a room. - explore the published room list. All members of the room can re-publish aliases (unlike Synapse).