Altered the buffering code within feedback handler so that a partial response when data has already buffered will add to the buffer.

lib/apn.js

@@ -272,10 +272,15 @@ var Feedback = function (optionArgs) {
 	}
 	
 	var processData = function(data) {
-		// Need to parse this data in correct lengths;
 		var pos = 0;
+		// If there is some buffered data read read the remainder and process this first.
 		if(readLength > 0) {
-			data.copy(readBuffer, readLength, 0, 38-readLength);
+			if(data.length < (responsePacketLength - readLength)) {
+				data.copy(readBuffer, readLength, 0);
+				readLength += data.length;
+				return;
+			}
+			data.copy(readBuffer, readLength, 0, responsePacketLength-readLength);
 			decodeResponse(readBuffer, 0);
 			pos = responsePacketLength-readLength;
 			readLength = 0;