Merge pull request #7 from jachwe/master

Changed Server to read unsigned 8Bit int from Buffer to fix faulty normalization

lib/artnet_server.js

@@ -9,32 +9,19 @@ exports.listen = function(port, cb) {
 
 	// 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 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 = new Array();
-		for (i = 0; i < length; i++) {
-			rawData.push(data[i + 18]);
+		var rawData = [];
+
+		for( i = 18; i < 18 + length; i++ ){
+			rawData.push( msg.readUInt8(i) );
 		}
-
-		// 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