Monstrous amount of changes. Bad commit disciplin.

lib/utils.js

@@ -159,11 +159,16 @@ function writeBuffer(obj, cmdLength, callback) {
  *
  * @param buf buffer
  * @param str encoding 'ASCII', 'LATIN1' or 'UCS2' or hex values
+ * @param int offset - defaults to 0
  * @return str in utf8 format
  */
-function decodeMsg(buffer, encoding) {
+function decodeMsg(buffer, encoding, offset) {
 	var checkEnc;
 
+	if (offset === undefined) {
+		offset = 0;
+	}
+
 	for (checkEnc in defs.consts.ENCODING) {
 		if (parseInt(encoding) === defs.consts.ENCODING[checkEnc] || encoding === checkEnc) {
 			encoding = checkEnc;
@@ -175,7 +180,7 @@ function decodeMsg(buffer, encoding) {
 		encoding = 'ASCII';
 	}
 
-	return defs.encodings[encoding].decode(buffer);
+	return defs.encodings[encoding].decode(buffer.slice(offset, buffer.length));
 }
 
 function encodeMsg(str) {
@@ -208,7 +213,7 @@ function pduToObj(pdu, stupidNullByte, callback) {
 	}
 
 	// Returns true if this PDU is a response to another PDU
-	retObj.isResponse = function() {
+	retObj.isResp = function() {
 		return ! ! (this.cmdId & 0x80000000);
 	};