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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

Drag UdpSockets.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 libUdpSockets.a

Buckle up, Dorothy

Usage

package.json

only if you want to write require('dgram') in your javascript

{
  "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 UdpSockets to pick it up:

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

TODO

add select tests from node's tests for dgram

Contributors

Mark Vayngrib
Ellen Katsnelson
Tradle, Inc.

PR's welcome!

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