133 lines
2.7 KiB
JavaScript
133 lines
2.7 KiB
JavaScript
/**
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* Sample React Native App
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* https://github.com/facebook/react-native
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*/
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'use strict';
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var React = require('react-native');
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var {
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AppRegistry,
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StyleSheet,
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Text,
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View,
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} = React;
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// require('./test/simple/test-dgram-address')
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// require('./test/simple/test-dgram-bind-default-address')
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// require('./test/simple/test-dgram-bind-shared-ports')
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function randomPort() {
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return Math.random() * 65536 | 0
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}
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var dgram = require('RCTUDP')
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var a = dgram.createSocket('udp4')
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var aPort = randomPort()
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a.bind(bPort, function(err) {
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if (err) throw err
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console.log('address', a.address())
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})
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var b = dgram.createSocket('udp4')
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var bPort = randomPort()
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b.bind(bPort, function(err) {
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if (err) throw err
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console.log('address', b.address())
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})
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a.on('message', function(data, rinfo) {
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var str = String.fromCharCode.apply(null, new Uint8Array(data));
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console.log('a received', str, rinfo)
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a.close()
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b.close()
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})
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b.on('message', function(data, rinfo) {
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var str = String.fromCharCode.apply(null, new Uint8Array(data));
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console.log('b received', str, rinfo)
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// echo back
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b.send(data, 0, data.length, aPort, '127.0.0.1', function(err) {
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if (err) throw err
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console.log('sent')
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})
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})
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b.once('listening', function() {
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var msg = toByteArray('hello')
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a.send(msg, 0, msg.length, bPort, '127.0.0.1', function(err) {
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if (err) throw err
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console.log('sent')
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})
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})
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var rctsockets = React.createClass({
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render: function() {
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return (
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<View style={styles.container}>
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<Text style={styles.welcome}>
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Welcome to React Native!
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</Text>
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<Text style={styles.instructions}>
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To get started, edit index.ios.js
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</Text>
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<Text style={styles.instructions}>
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Press Cmd+R to reload,{'\n'}
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Cmd+D or shake for dev menu
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</Text>
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</View>
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);
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}
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});
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var styles = StyleSheet.create({
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container: {
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flex: 1,
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justifyContent: 'center',
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alignItems: 'center',
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backgroundColor: '#F5FCFF',
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},
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welcome: {
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fontSize: 20,
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textAlign: 'center',
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margin: 10,
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},
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instructions: {
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textAlign: 'center',
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color: '#333333',
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marginBottom: 5,
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},
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});
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function toByteArray(obj) {
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if (typeof obj === 'object') {
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var i = 0
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var arr = []
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while (true) {
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if (!(i in obj)) break
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arr.push(+obj[i])
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i++
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}
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return new Uint8Array(arr)
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}
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else if (typeof obj !== 'string') {
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throw new Error('unsupported format')
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}
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var uint = new Uint8Array(obj.length);
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for (var i = 0, l = obj.length; i < l; i++){
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uint[i] = obj.charCodeAt(i);
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}
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return new Uint8Array(uint);
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}
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AppRegistry.registerComponent('react-native-udp', () => rctsockets);
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