changed struct to c++11 unresticted union

connection.h

@@ -255,14 +255,38 @@ struct stat_t
 struct conn_info_t     //stores info for a raw connection.for client ,there is only one connection,for server there can be thousand of connection since server can
 //handle multiple clients
 {
-	struct  //conv_manager_t is here to avoid copying when a connection is recovered
-	//TODO maybe an unconstrained union is better, but struct is okay since conv_manger is small when no data is filled in.
+	union  tmp_union_t
 	{
 		conv_manager_t<address_t> c;
 		conv_manager_t<u64_t> s;
 		//avoid templates here and there, avoid pointer and type cast
+		tmp_union_t()
+		{
+			if(program_mode==client_mode)
+			{
+				new( &c ) conv_manager_t<address_t>();
+			}
+			else
+			{
+				assert(program_mode==server_mode);
+				new( &s ) conv_manager_t<u64_t>();
+			}
+		}
+		~tmp_union_t()
+		{
+			if(program_mode==client_mode)
+			{
+				c.~conv_manager_t<address_t>();
+			}
+			else
+			{
+				assert(program_mode==server_mode);
+				s.~conv_manager_t<u64_t>();
+			}
+		}
 	}conv_manager;
 
+
 	fec_encode_manager_t fec_encode_manager;
 	fec_decode_manager_t fec_decode_manager;
 	ev_timer timer;