Netty中4.0.15，java.nio.channels.IllegalSelectorException例外

Question

我試圖創建接收使用NioUdtMessageConnectorChannel作爲通道UDP消息的服務器。粘貼代碼服務器

EventLoopGroup group = new NioEventLoopGroup(50, 
       Executors.defaultThreadFactory()); 


    try { 
     Bootstrap b = new Bootstrap(); 
     b.group(group); 
     b.channel(NioUdtMessageConnectorChannel.class); 
     b.option(UdtChannelOption.SO_BROADCAST, true); 
     b.option(UdtChannelOption.WRITE_BUFFER_HIGH_WATER_MARK, 1024); 
     b.option(UdtChannelOption.PROTOCOL_RECEIVE_BUFFER_SIZE, 1024); 
     b.option(UdtChannelOption.PROTOCOL_SEND_BUFFER_SIZE, 1024); 
     b.option(UdtChannelOption.TCP_NODELAY, true); 
     b.option(UdtChannelOption.SO_RCVBUF, 256 * 1024); 
     b.handler(new SNMPTrapHandler()); 
     b.bind(PORT).sync().channel().closeFuture().await(); 
    } finally { 
     group.shutdownGracefully(); 
    } 

不過，我得到以下錯誤

log4j:WARN Please initialize the log4j system properly. 
java.nio.channels.IllegalSelectorException 
    at sun.nio.ch.SelectorImpl.register(Unknown Source) 
    at java.nio.channels.spi.AbstractSelectableChannel.register(Unknown Source) 
    at io.netty.channel.nio.AbstractNioChannel.doRegister(AbstractNioChannel.java:308) 
    at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:439) 
    at io.netty.channel.AbstractChannel$AbstractUnsafe.access$100(AbstractChannel.java:374) 
    at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:418) 
    at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:354) 
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:353) 
    at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:101) 
    at java.lang.Thread.run(Unknown Source) 

什麼是確切的錯誤？

Answer 1

你，當你創建一個NioEventLoopGroup指定UDT選擇供應商。例如：

new NioEventLoopGroup(..., NioUdtProvider.MESSAGE_PROVIDER); 

欲瞭解更多信息，請參閱the UDT examples。