Merge pull request #460 from GangZhuo/master

Conditional compile

shadowsocks-csharp/Controller/Logging.cs

@@ -2,6 +2,7 @@
 using System.IO;
 using System.Net.Sockets;
 using System.Net;
+using System.Diagnostics;
 
 using Shadowsocks.Util;
 
@@ -47,16 +48,15 @@ namespace Shadowsocks.Controller
             WriteToLogFile(o);
         }
 
+        [Conditional("DEBUG")]
         public static void Debug(object o)
         {
-#if DEBUG
             WriteToLogFile("[D] " + o);
-#endif
         }
 
+        [Conditional("DEBUG")]
         public static void Debug(EndPoint local, EndPoint remote, int len, string header = null, string tailer = null)
         {
-#if DEBUG
             if (header == null && tailer == null)
                 Debug($"{local} => {remote} (size={len})");
             else if (header == null && tailer != null)
@@ -65,14 +65,12 @@ namespace Shadowsocks.Controller
                 Debug($"{header}: {local} => {remote} (size={len})");
             else
                 Debug($"{header}: {local} => {remote} (size={len}), {tailer}");
-#endif
         }
 
+        [Conditional("DEBUG")]
         public static void Debug(Socket sock, int len, string header = null, string tailer = null)
         {
-#if DEBUG
             Debug(sock.LocalEndPoint, sock.RemoteEndPoint, len, header, tailer);
-#endif
         }
 
         public static void LogUsefulException(Exception e)