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Overview

FilePizza is a browser-based, peer-to-peer file sharing service deployed as part of the Mondo Open Platform Service (MOPS). It allows users to share files directly between browsers using WebRTC technology, without storing files on a central server.

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Service Details

ComponentValue
URLhttps://pizza.trymondo.com
Imagekern/filepizza:latest
Containerfilepizza
Port3000 (internal)
Networktraefik-net (external)

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Architecture

FilePizza consists of a single container connected to the Traefik network: 
[Client Browsers] <-- WebRTC P2P --> [Client Browsers]
         ↑                                   ↑
         |                                   |
         +-----------→ [FilePizza] ←---------+
                           ↑
                           |
                       [Traefik]
FilePizza acts as a WebRTC signaling server to establish direct peer connections, but the file data transfers directly between browsers.

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Deployment Configuration

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Docker Compose File

services:
  redis:
    image: redis:7.4.2
    container_name: redis
    restart: unless-stopped
    ports:
      - 127.0.0.1:6379:6379
    healthcheck:
      test: ['CMD', 'redis-cli', 'ping']
      interval: 30s
      timeout: 10s
      retries: 5
    networks:
      - filepizza-net
    volumes:
      - filepizza-redis-data:/data

  # coturn:
  #   image: coturn/coturn:4.6.3
  #   container_name: coturn
  #   restart: unless-stopped
  #   ports:
  #     - 3478:3478
  #     - 3478:3478/udp
  #     - 5349:5349
  #     - 5349:5349/udp
  #     - 60000-60128:60000-60128/udp
  #   environment:
  #     - DETECT_EXTERNAL_IP=yes
  #     - DETECT_RELAY_IP=yes
  #   command: -n --log-file=stdout --redis-userdb="ip=redis connect_timeout=30" --min-port=60000 --max-port=60128
  #   networks:
  #     - traefik-net
  #     - filepizza-net
  #   labels:
  #     - traefik.enable=true
  #     - traefik.http.routers.coturn.rule=Host(`coturn.trymondo.com`)
  #     - traefik.http.routers.coturn.entrypoints=websecure
  #     - traefik.http.routers.coturn.tls=true
  #     - traefik.http.routers.coturn.tls.certresolver=production
  #     - traefik.http.services.coturn.loadbalancer.server.port=3478

  filepizza:
    image: kern/filepizza:7e8650f
    container_name: filepizza
    restart: unless-stopped
    environment:
      - PORT=80
      - REDIS_URL=redis://redis:6379
      - COTURN_ENABLED=false
    networks:
      - traefik-net
      - filepizza-net
    depends_on:
      - redis
    labels:
      - traefik.enable=true
      - traefik.http.routers.filepizza.rule=Host(`pizza.trymondo.com`)
      - traefik.http.routers.filepizza.entrypoints=websecure
      - traefik.http.routers.filepizza.tls=true
      - traefik.http.routers.filepizza.tls.certresolver=production
      - traefik.http.services.filepizza.loadbalancer.server.port=80

networks:
  traefik-net:
    external: true
  filepizza-net:
    external: true

volumes:
  filepizza-redis-data:

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Deployment Instructions

  1. Create the deployment directory: 
    mkdir -p /opt/apps/filepizza
  2. Create the docker-compose.yml file with the content shown above: 
    nano /opt/apps/filepizza/docker-compose.yml
  3. Deploy the service: 
    cd /opt/apps/filepizza
docker compose up -d
  4. Verify the service is running: 
    docker compose ps

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Traefik Integration

FilePizza is configured with the following Traefik settings:
  • Host Rule: pizza.trymondo.com
  • Entrypoint: websecure (HTTPS)
  • TLS: Enabled with production certificate resolver
  • Backend Port: 3000

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Usage

  1. Access the service at https://pizza.trymondo.com
  2. File senders can:
    • Select a file to share
    • Receive a unique URL to share with recipients
  3. File recipients:
    • Open the shared URL
    • Download the file directly from the sender’s browser

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Important Notes

FilePizza requires WebRTC support in browsers. Some corporate firewalls or restrictive networks might block WebRTC connections.
FilePizza is a stateless application. No persistent volumes are needed as files are never stored on the server.

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Resource Usage

FilePizza is a lightweight application with minimal resource requirements:
  • Memory: Typically less than 100MB
  • CPU: Minimal usage during idle periods, moderate during connection establishment

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Maintenance

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Updates

To update FilePizza to the latest version: 
cd /opt/apps/filepizza
docker compose pull
docker compose up -d

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Troubleshooting

If the service is inaccessible:
  1. Check container status: 
    docker compose ps
  2. View container logs: 
    docker compose logs
  3. Verify Traefik routing: 
    curl -I -H "Host: pizza.trymondo.com" https://pizza.trymondo.com

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Security Considerations

  • FilePizza doesn’t store files, reducing data exposure risks
  • All communications go through HTTPS via Traefik
  • WebRTC connections are encrypted by default
  • Consider adding Traefik middleware for additional security: 
    - traefik.http.routers.filepizza.middlewares=secureHeaders@file

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Additional Resources