147 

   147 

   148         private static Set<SocketOption<?>> defaultOptions() {

   148         private static Set<SocketOption<?>> defaultOptions() {

   149             HashSet<SocketOption<?>> set = new HashSet<>();

   149             HashSet<SocketOption<?>> set = new HashSet<>();

   150             set.add(StandardSocketOptions.SO_SNDBUF);

   150             set.add(StandardSocketOptions.SO_SNDBUF);

   151             set.add(StandardSocketOptions.SO_RCVBUF);

   151             set.add(StandardSocketOptions.SO_RCVBUF);

   153             set.add(StandardSocketOptions.SO_LINGER);

   152             set.add(StandardSocketOptions.SO_LINGER);

   154             return Collections.unmodifiableSet(set);

   153             return Collections.unmodifiableSet(set);

   155         }

   154         }

   156     }

   155     }

   157 

   156