PairDrop/README.md

# Snapdrop 

[Snapdrop](https://snapdrop.net): local file sharing in your browser - inspired by Apple's Airdrop.

#### Snapdrop (Version 2) is built with the following awesome technologies:
* Vanilla HTML5 / ES6 / CSS3  
* Progressive Web App
* [WebRTC](http://webrtc.org/)
* [WebSockets](http://www.websocket.org/) fallback (iDevices don't support WebRTC)
* [NodeJS](https://nodejs.org/en/)
* [Material Design](https://material.google.com/)

## Support the Snapdrop Community
Snadprop is free. Still, we have to pay the server. If you want to contribute, please use PayPal

[<img src="https://www.paypalobjects.com/en_US/i/btn/btn_donateCC_LG.gif">](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=74D2NE84JHCWG&source=url)

or Bitcoin:

[<img src="https://coins.github.io/thx/logo-color-large-pill-320px.png" alt="CoinThx" width="200"/>](https://coins.github.io/thx/#1K9zQ8f4iTyhKyHWmiDKt21cYX2QSDckWB?label=Snapdrop&message=Thanks!%20Your%20contribution%20helps%20to%20keep%20Snapdrop%20free%20for%20everybody!) 

Thanks a lot for supporting free and open software!


## Frequently Asked Questions

### Instructions
* [Video Instructions](https://www.youtube.com/watch?v=4XN02GkcHUM) (Big thanks to [TheiTeckHq](https://www.youtube.com/channel/UC_DUzWMb8gZZnAbISQjmAfQ))
* [idownloadblog](http://www.idownloadblog.com/2015/12/29/snapdrop/)
* [thenextweb](http://thenextweb.com/insider/2015/12/27/snapdrop-is-a-handy-web-based-replacement-for-apples-fiddly-airdrop-file-transfer-tool/)
* [winboard](http://www.winboard.org/artikel-ratgeber/6253-dateien-vom-desktop-pc-mit-anderen-plattformen-teilen-mit-snapdrop.html)
* [免費資源網路社群](https://free.com.tw/snapdrop/)

##### What about the connection? Is it a P2P-connection directly from device to device or is there any third-party-server?
It uses a P2P connection if WebRTC is supported by the browser. (WebRTC needs a Signaling Server, but it is only used to establish a connection and is not involved in the file transfer).

If WebRTC isn’t supported (Safari, IE) it uses a Web Sockets fallback for the file transfer. The server connects the clients with each other.  

##### What about privacy? Will files be saved on third-party-servers?
None of your files are ever saved on any server. 
Snapdrop doesn't even use a database. If you are curious have a look [at the Server](https://github.com/RobinLinus/snapdrop/blob/master/server/).

##### Is SnapDrop a fork of ShareDrop?
No. ShareDrop is built with Ember. Snapdrop is built with vanilla ES6. 
I wanted to play around with Progressive Web Apps and then I got the idea of a local file sharing app. By doing research on this idea I found and analysed ShareDrop. I liked it and thought about how to improve it.
ShareDrop uses WebRTC only and isn't compatible with Safari browsers. Snapdrop uses a Websocket fallback and some hacks to make Snapdrop work due to the download restrictions on iDevices. 


### Snapdrop is awesome! How can I support it? 
* [File bugs, give feedback, submit suggestions](https://github.com/RobinLinus/snapdrop/issues)
* Share Snapdrop on your social media.
* [Buy me a cup of coffee](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=R9C5E42UYEQCN)
* Fix bugs and make a pull request. 
* Do security analysis and suggestions

## Local Development
[Install docker with docker-compose.](https://docs.docker.com/compose/install/)

```
    git clone git@github.com:RobinLinus/snapdrop.git
    cd snapdrop
    docker-compose up
```

Now point your browser to http://localhost:8080.
    
## Deployment Notes
The client expects the server at http(s)://your.domain/server.

When serving the node server behind a proxy the `X-Forwarded-For` header has to be set by the proxy. Otherwise all clients that are served by the proxy will be mutually visible.

By default the server listens on port 3000.

For an nginx configuration example see `nginx/default.conf`.

## Licences
* Thanks to [Mark DiAngelo]() for the [Blop Sound](http://soundbible.com/2067-Blop.html)



## Desktop App 
Note, if you are using Google Chrome you can easily install Snapdrop PWA on your desktop by clicking the install Button in the top-right corner.

If you are not using Chrome, you can install the [Snapdrop Desktop App](https://github.com/infin1tyy/snapdrop-desktop) built on top of Electrum. (Thanks to Infin1tyy!).