Channel.write(Object obj)

["Trustin Lee (이희승)"]

Hello Michael,

Could you post the stack trace of the UnsupportedOperationException?

MichaelW86 wrote:
> Hallo
> I'm trying to use Netty for a Socket Server but i have problems to write a
> message to the downstream channel. When i use the channel.write() Method the
> Exception: java.lang.UnsupportedOperationException is returned by the
> corresponding future.getCause() Method. I think i do something wrong... 
> 
> Here is the Server Code:
> 
> 
> /***********************************************************************************/
> /* Class NJServer */
> 
> public class NJServer {
> 
>   public static void main(String[] args) throws Exception {
>     new NJServer();
>   }
> 	
>  public NJServer() {
>   this.factory = new NioServerSocketChannelFactory(
>       Executors.newCachedThreadPool(),
>       Executors.newCachedThreadPool());
> 
>   this.bootstrap = new ServerBootstrap(factory);
> 
>   bootstrap.setPipelineFactory(new NJServerPipelineFactory());
> 		
>   this.channel = bootstrap.bind(new InetSocketAddress(1234));
> 
>   allChannels.add(channel);
> 
>   byte commando = 1;
>   [...]
> 
>   ChannelBuffer buf = ChannelBuffers.buffer(16);
>   buf.writeByte(commando);
>   [...]
> 
>   /* HERE IS THE PROBLEM */
>   f = this.channel.write(buf);
> 
>   f.addListener(new ChannelFutureListener() {
>     public void operationComplete(ChannelFuture future) {
>       if (future.isSuccess()) { [...] }
>       else { System.out.print(future.getCause()); }
>     }
>   });
> 
>   waitForShutdownCommand();
> 
>   [...]
>  }
> 
> }
> 			
> /* Class NJServerPipelineFactory */
> [...]
> 
> pipeline.addLast("handler", new NJServerHandler());
> 
> [...]
> 
> 
> /* Class NJServerHandler */
> [...]
> 
> @Override
> public void channelOpen(ChannelHandlerContext ctx, ChannelStateEvent e) {
>   e.getChannel().getPipeline().addFirst("encoder", new NJMessageEncoder());
>   e.getChannel().getPipeline().addFirst("decoder", new NJMessageDecoder());
> }
> 
> [...]
> 
> /***********************************************************************************/
> 
> The NJMessageEncoder is never called!! The NJMessageDecoder works. So whats
> the problem? The Client Application is a Java Socket Client, where Netty is
> not used.
> 
> Thanks in advance!
> 
> Michael 
> 
> 
> 
> 
> 		

-- 
what we call human nature in actuality is human habit
http://gleamynode.net/


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