165             throw new UnsupportedOperationException("'" + name + "' not supported");
 166 
 167         synchronized (stateLock) {
 168             if (!isOpen())
 169                 throw new ClosedChannelException();
 170             if (name == StandardSocketOptions.SO_REUSEADDR &&
 171                     Net.useExclusiveBind())
 172             {
 173                 // SO_REUSEADDR emulated when using exclusive bind
 174                 return (T)Boolean.valueOf(isReuseAddress);
 175             }
 176             // no options that require special handling
 177             return (T) Net.getSocketOption(fd, Net.UNSPEC, name);
 178         }
 179     }
 180 
 181     private static class DefaultOptionsHolder {
 182         static final Set<SocketOption<?>> defaultOptions = defaultOptions();
 183 
 184         private static Set<SocketOption<?>> defaultOptions() {
 185             HashSet<SocketOption<?>> set = new HashSet<SocketOption<?>>(2);
 186             set.add(StandardSocketOptions.SO_RCVBUF);
 187             set.add(StandardSocketOptions.SO_REUSEADDR);
 188             set.add(StandardSocketOptions.IP_TOS);
 189             return Collections.unmodifiableSet(set);
 190         }
 191     }
 192 
 193     @Override
 194     public final Set<SocketOption<?>> supportedOptions() {
 195         return DefaultOptionsHolder.defaultOptions;
 196     }
 197 
 198     public boolean isBound() {
 199         synchronized (stateLock) {
 200             return localAddress != null;
 201         }
 202     }
 203 
 204     public InetSocketAddress localAddress() {
 205         synchronized (stateLock) {

 165             throw new UnsupportedOperationException("'" + name + "' not supported");
 166 
 167         synchronized (stateLock) {
 168             if (!isOpen())
 169                 throw new ClosedChannelException();
 170             if (name == StandardSocketOptions.SO_REUSEADDR &&
 171                     Net.useExclusiveBind())
 172             {
 173                 // SO_REUSEADDR emulated when using exclusive bind
 174                 return (T)Boolean.valueOf(isReuseAddress);
 175             }
 176             // no options that require special handling
 177             return (T) Net.getSocketOption(fd, Net.UNSPEC, name);
 178         }
 179     }
 180 
 181     private static class DefaultOptionsHolder {
 182         static final Set<SocketOption<?>> defaultOptions = defaultOptions();
 183 
 184         private static Set<SocketOption<?>> defaultOptions() {
 185             HashSet<SocketOption<?>> set = new HashSet<>(2);
 186             set.add(StandardSocketOptions.SO_RCVBUF);
 187             set.add(StandardSocketOptions.SO_REUSEADDR);
 188             set.add(StandardSocketOptions.IP_TOS);
 189             return Collections.unmodifiableSet(set);
 190         }
 191     }
 192 
 193     @Override
 194     public final Set<SocketOption<?>> supportedOptions() {
 195         return DefaultOptionsHolder.defaultOptions;
 196     }
 197 
 198     public boolean isBound() {
 199         synchronized (stateLock) {
 200             return localAddress != null;
 201         }
 202     }
 203 
 204     public InetSocketAddress localAddress() {
 205         synchronized (stateLock) {