Using Livekit as a backend (what matrix rtc uses)

[abdulhakim-alshanqiti]

heyy i have been playing with matrix rtc and trying to build a product around it.. i also love the idea around this project but all the examples probably can't scale to 100 users so using matrix rtc might get u there !

for the ppl who aren't fimmilar with matrix RTC its using Livekit to start scalable webrtc connections you can use Matrix js sdk to start a webrtc session that can handle hundreds of ppl at the same time because Livekit uses SFU

toger5/matrixRTC-example

you authenticate a matrix client then you start the livekit webrtc session this is all client side js

    const session = matrixClient.matrixRTC.getRoomSession(matrix_room);

      const focus = (
        await makePreferredLivekitFoci(
          session,
          matrix_room.roomId,
          matrixClient
        )
      )[0];

      const sfuConfig = await getSFUConfigWithOpenID(matrixClient, focus);
      if (!sfuConfig) throw "Could not get SFU config from the jwt service";

      const livekitRoom = new Room({});

      livekitRoom.connect(sfuConfig.url, sfuConfig.jwt);

then u use the livekit api to listen for events and send data

    livekitRoom.on("participantConnected", (participant) => {
        let update = doc.export({ mode: "update" });
        const updateString = btoa(String.fromCharCode(...update));
        let update_json = JSON.stringify({
          type: "update",
          doc: updateString,
        });
        const update_encoder = new TextEncoder();
        const update_data = update_encoder.encode(update_json);

        livekitRoom.localParticipant.publishData(update_data, {
          reliable: true,
        });
      });