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fix for Node v8 (Object.setPrototypeOf called on null or undefined) #14

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fix for Node v8 (Object.setPrototypeOf called on null or undefined) #14

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74 changes: 43 additions & 31 deletions lib/artnet_server.js
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Original file line number Diff line number Diff line change
@@ -1,36 +1,48 @@
var util = require('util');
var EventEmitter = require('events');
var events = require('events');
var dgram = require('dgram');

// ArtNet server class
function listen(port, cb) {
this.port = port;
EventEmitter.call(this);

// Set up the socket
var sock = dgram.createSocket("udp4", function (msg, peer) {

var sequence = msg.readUInt8(12,true);
var physical = msg.readUInt8(13,true);
var universe = msg.readUInt8(14,true);
var offset = msg.readUInt8(16,true);
var length = msg.readUInt8(17,true);

var rawData = [];

for( i = 18; i < 18 + length; i++ ){
rawData.push( msg.readUInt8(i) );
}

var retData = {sequence: sequence, physical: physical, universe: universe, length: length, data: rawData};

// And call the callback passing the deseralized data
cb(retData, peer);
});
sock.bind(port);
}
module.exports = class ArtnetServer extends events.EventEmitter {
constructor (port, cb) {
super();
this.port = port;
call(this);

// Setup EventEmitter for the ArtNetServer
util.inherits(listen, EventEmitter);

exports.listen = listen
// Set up the socket
var sock = dgram.createSocket("udp4", function (msg, peer) {
var data = new Array();
for (i = 0; i < msg.length; i++) {
var d = msg.toString().charCodeAt(i);
// Since we can't do unsigned 8-bit integers, do some normalization
if (d < 0) {
d = 0;
} else if (d > 255) {
d = 255;
}

// Append the byte to the array
data.push(d);
}

// Deseralize the data - magic numbers are as per the Art-Net protocol
var sequence = data[12];
var physical = data[13];
var universe = (data[14] * 256) + data[15];
var length = (data[16] * 256) + data[17];

var rawData = new Array();
for (i = 0; i < length; i++) {
rawData.push(data[i + 18]);
}

// Build the associative array to return
var retData = {sequence: sequence, physical: physical, universe: universe, length: length, data: rawData};

// And call the callback passing the deseralized data
cb(retData, peer);
});
sock.bind(port);

}
}