ShareDrop is HTML5 clone of Apple AirDrop service. It allows you to transfer files directly between devices, without having to upload them to any server first. It uses WebRTC for secure peer-to-peer file transfer and Firebase for presence management and WebRTC signaling.

ShareDrop allows you to send files to other devices in the same local network (i.e. devices with the same public IP address) without any configuration - simply open https://www.sharedrop.io on all devices and they will see each other. It also allows you to send files between networks - just click + button in the top right corner of the page to create a room with unique URL and share this URL with other people you want to send a file to. Once they open this page in a browser on their devices, you'll see each other's avatars.

The main difference between ShareDrop and AirDrop is that ShareDrop requires Internet connection to discover other devices, while AirDrop doesn't need one - it creates ad-hoc wireless network between them. On the other hand, ShareDrop allows you to share files between mobile (Android) and desktop devices and between networks as well.

Supported browsers

• Chrome (desktop and Android) 33+
• Opera (desktop and Android) 20+
• Firefox (desktop and Android) 28+ (though we suggest using Chrome or Opera for transferring larger files)

How to set it up for local development

1. Setup Firebase:
   1. Sign up for a Firebase account and create a database.
   2. Go to "Security Rules" tab, click "Load Rules" button and select firebase_rules.json file.
   3. Take note of your database URL and its secret, which can be found in "Secrets" tab.
2. Run npm install -g ember-cli to install Ember CLI.
3. Run npm install -g bower to install Bower.
4. Run ember install to install app dependencies.
5. Run cp .env{.sample,} to create .env file. This file will be used by Foreman to set environemnt variables when running the app locally.
   • SECRET key is used to encrypt cookies and generate room name based on public IP address for / route. It can be any random string - you can generate one using e.g. date | md5sum
   • NEW_RELIC_* keys are only necessary in production
6. Run ember build --watch to build Ember app and automatically rebuild it on any changes.
7. Run foreman start to start the server (this will load all env variables in .env file and run node index.js as specified in Procfile). You can install foreman with gem install foreman.

Deployment

Heroku

When deploying to Heroku, use multi buildpack.

For new apps:

heroku create myapp --buildpack https://github.com/heroku/heroku-buildpack-multi.git

For existing apps:

heroku config:set BUILDPACK_URL=https://github.com/heroku/heroku-buildpack-multi.git

Then run

heroku config:set NPM_CONFIG_PRODUCTION=false

to make Node.js buildpack install development dependencies necessary to build Ember CLI app as well as the production ones.

It uses the default Heroku Node.js buildpack to install Node.js, npm and Node.js packages and then uses Ember CLI buildpack to install Bower packages and build Ember CLI app.