A self-hosted LiveKit voice server for a Flutter app

Audio rooms on your own server instead of per-minute billing, with a one-command install and audio-only tokens.

LiveKit
Redis
Caddy
TypeScript
Flutter
Docker

Measured result

30/30

audio tracks, 0% packet loss

The problem

Audio-room apps pay providers like ZEGOCLOUD and Agora per participant-minute, so the bill grows with every new user.

What I built

LiveKit with Redis, Caddy for automatic TLS and built-in TURN, installed by one script on Ubuntu 24.04 with a firewall.
Audio-room config: no participant limit, everyone hears everyone, video publishing blocked at the token level.
A TypeScript token server, and a Flutter service with a voice-room screen (speaking indicator, mic toggle).
An honest sizing table derived from LiveKit's official benchmark, an Arabic guide, and a ZEGOCLOUD migration checklist.

Measured result

Local load test (3 speakers × 10 listeners) on livekit-server v1.13.10: 30 of 30 audio tracks delivered, 0% packet loss.
Install scripts are shellcheck-clean, the Caddy config validates, the token server compiles, and video publishing is blocked as required.

This is a local functional test, not a capacity benchmark of a production server.

The Arabic guide contents, sizing table and local verification results

Load-testing before launchterminal

$ lk load-test --url wss://livekit.myapp.com \
    --api-key $LIVEKIT_API_KEY --api-secret $LIVEKIT_API_SECRET \
    --room loadtest --audio-publishers 3 --subscribers 10 --duration 1m
# local verification: 30/30 audio tracks, 0% packet loss

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