UDP in React Native

node's dgram API in React Native

This module is used by Tradle

Install

* Create a new react-native project. Check react-native getting started

* In your project dir:
``
npm install --save react-native-udp
`

Link in the native dependency

`
react-native link react-native-udp


OR, if you're using react-native older than 0.31:


rnpm link react-native-udp
`

$3

* Register and load the Native Module in your Main application
(import, getPackages)
* __Note:__ prior to react-native 0.29.2, this should happen in your Main Activity

`java
...

import com.tradle.react.UdpSocketsModule; // <--- import //

public class MainApplication extends Application implements ReactApplication {
...
@Override
protected List getPackages() {
return Arrays.asList(
new MainReactPackage(),
new UdpSocketsModule() // <- add here //
);
}
}
`

Buckle up, Dorothy

Usage

$3

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

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

$3

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

`js
var dgram = require('dgram')
// OR, if not shimming via package.json "browser" field:
// var dgram = require('react-native-udp')
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)
})
`

$3

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

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

$3

add select tests from node's tests for dgram

Contributors

Mark Vayngrib
Ellen Katsnelson
Tradle, Inc.

Andy Prock

PR's welcome!