[英]Timeout event in netty 4
嗨,我想收到一個事件,其中messageReceived
在預期的時間內沒有被調用。 我嘗試使用ReadTimeoutHandler
,它會生成異常,我可以在exceptionCaught()
中處理異常,在那里我會做一些工作並在不關閉上下文的情況下返回。 但在那之后我得到了一堆異常
Nov 18, 2012 8:56:34 AM io.netty.channel.ChannelInitializer
WARNING: Failed to initialize a channel. Closing: [id: 0xa81de260, /127.0.0.1:59763 => /127.0.0.1:59724]
io.netty.channel.ChannelHandlerLifeCycleException: io.netty.handler.timeout.ReadTimeoutHandler is not a @Sharable handler, so can't be added or removed multiple times.
at io.netty.channel.DefaultChannelPipeline.callBeforeAdd(DefaultChannelPipeline.java:629)
at io.netty.channel.DefaultChannelPipeline.addLast0(DefaultChannelPipeline.java:173)
我做得對嗎?
謝謝
看起來您正在向許多通道添加 io.netty.handler.timeout.ReadTimeoutHandler 的相同實例。 嘗試
ch.pipeline()
.addLast(new ReadTimeoutHandler(3000))
@Shareable 的文檔:
/**
* Indicates that the same instance of the annotated {@link ChannelHandler}
* can be added to one or more {@link ChannelPipeline}s multiple times
* without a race condition.
* <p>
* If this annotation is not specified, you have to create a new handler
* instance every time you add it to a pipeline because it has unshared
* state such as member variables.
* <p>
* This annotation is provided for documentation purpose, just like
* <a href="http://www.javaconcurrencyinpractice.com/annotations/doc/">the JCIP annotations</a>.
*/
@Inherited
@Documented
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@interface Sharable {
// no value
}
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