Replaced int2bytes -> data.write(....'binary') with an int2buf(number, buffer, start, length) method which writes the integer of length bytes directly into the bytes of the buffer specified by the start. Replaces some really clunky code.

node-apn.js

@@ -76,10 +76,10 @@ var Connection = function (optionArgs) {
 			pos++;
 			
 			// Identifier
-			pos += data.write(int2bytes(note._uid, 4), pos, 'binary');
+			pos += int2buf(note._uid, data, pos, 4);
 			
 			// Expiry
-			pos += data.write(int2bytes(note.expiry, 4), pos, 'binary');
+			pos += int2buf(note.expiry, data, pos, 4);
 			
 			self.cachedNotes.push(note);
 			tidyCachedNotes();
@@ -90,9 +90,9 @@ var Connection = function (optionArgs) {
 			pos++;
 		}
 		
-		pos += data.write(int2bytes(hexTok.length, 2), pos, 'binary');
-		pos += data.write(int2bytes(messageLength, 2), pos, 'binary');
+		pos += int2buf(token.length, data, pos, 2);
 		pos += token.copy(data, pos, 0);
+		pos += int2buf(messageLength, data, pos, 2);
 		pos += data.write(message, pos);
 		
 		// If error occurs then slice array and resend all stored notes.
@@ -264,13 +264,13 @@ exports.feedback = function (optionArgs) {
 	}
 }
 
-function int2bytes(number, length) {
-	var chars = [];
-	for(var i=0; i<length; i++) {
-		chars.unshift(number & 0xff);
+function int2buf(number, buffer, start, length) {
+	length -= 1;
+	for(var i=0; i<=length; i++) {
+		buffer[start+length-i] = number & 0xff;
 		number = number >> 8;
 	}
-	return String.fromCharCode.apply(String, chars);
+	return length+1;
 }
 
 function bytes2int(bytes, length) {