react-native-udp/README.md

# UDP in React Native

node's [dgram](https://nodejs.org/api/dgram.html) API in React Native

This module is used by [Tradle](https://github.com/tradle)

## Install

* Create a new react-native project. [Check react-native getting started](http://facebook.github.io/react-native/docs/getting-started.html#content)

* in PROJECT_DIR/node_modules/react-native, execute:
```
npm install --save react-native-udp
```

* Drag RCTUDP.xcodeproj from node_modules/react-native-udp into your XCode project. Click on the project in XCode, go to Build Phases, then Link Binary With Libraries and add libReactUDP.a

Buckle up, Dorothy

## Usage

### package.json

_only if you want to write require('dgram') in your javascript_

```json
{
  "browser": {
    "dgram": "react-native-udp"
  }
}
```

### JS

_see/run index.ios.js for a complete example, but basically it's just like dgram_

var dgram = require('dgram')
// OR, if not shimming via package.json "browser" field:
// var dgram = require('UdpSockets') 
var socket = dgram.createSocket('udp4')
socket.bind(12345)
socket.once('listening', function() {
  var buf = toByteArray('excellent!')
  socket.send(buf, 0, buf.length, remotePort, remoteHost, function(err) {
    if (err) throw err
    
    console.log('message was sent')
  })
})

socket.on('message', function(msg, rinfo) {
  console.log('message was received', msg)
})

### Note

If you want to send and receive node Buffer objects, you'll have to "npm install buffer" and set it as a global for RCTUDP to pick it up:

```js
global.Buffer = global.Buffer || require('buffer').Buffer
```

### TODO

add select tests from node's tests for dgram

## Contributors

[Tradle, Inc.](https://github.com/tradle/about/wiki)

PR's welcome!