fix code

RS232Test/Form1.cs

@@ -17,7 +17,10 @@ namespace RS232Test
         private const char STX = (char)0x02;
         private const char CR = (char)0x0D;
         private const char LF = (char)0x0A;
-        private string inStream = "";
+
+        private const string SEPERATOR = "\r\n";
+
+        private string serialStream = "";
 
         private object receiveLock = new object();
 
@@ -119,22 +122,22 @@ namespace RS232Test
             if (data.Length < 1)
                 return;
 
-            inStream = String.Concat(inStream, data);
-            string message = EqTocReceive(inStream, "\r\n");
+            serialStream = String.Concat(serialStream, data);
+            string packetString = pullPacketString();
             Console.WriteLine();
-            EqTocPrint(message);
+            EqTocPrint(packetString);
         }
 
-        private string EqTocReceive(string stream, string seperator)
+        private string pullPacketString()
         {
-            int etxIndex = inStream.IndexOf(seperator);
+            int etxIndex = serialStream.IndexOf(SEPERATOR);
             if (etxIndex < 0)
                 return null;
 
-            string message = inStream.Substring(0, etxIndex);
-            inStream = inStream.Remove(0, etxIndex + seperator.Length);
+            string packetString = serialStream.Substring(0, etxIndex);
+            serialStream = serialStream.Remove(0, etxIndex + SEPERATOR.Length);
 
-            return message;
+            return packetString;
         }
 
         private void EqTocPrint(string message)