349     abstract void shutdownInput() throws IOException;

   350 

   351     abstract void shutdownOutput() throws IOException;

   352 

   353     // Support for WebSocket/RawChannelImpl which unfortunately

   354     // still depends on synchronous read/writes.

   355     // It should be removed when RawChannelImpl moves to using asynchronous APIs.

   356     abstract static class DetachedConnectionChannel implements Closeable {

   357         DetachedConnectionChannel() {}

   358         abstract SocketChannel channel();

   359         abstract long write(ByteBuffer[] buffers, int start, int number)

   360                 throws IOException;

   361         abstract void shutdownInput() throws IOException;

   362         abstract void shutdownOutput() throws IOException;

   363         abstract ByteBuffer read() throws IOException;

   364         @Override

   365         public abstract void close();

   366         @Override

   367         public String toString() {

   368             return this.getClass().getSimpleName() + ": " + channel().toString();

   369         }

   370     }

   371 

   372     // Support for WebSocket/RawChannelImpl which unfortunately

   373     // still depends on synchronous read/writes.

   374     // It should be removed when RawChannelImpl moves to using asynchronous APIs.

   375     abstract DetachedConnectionChannel detachChannel();

   376