io.netty.handler.timeout

Class WriteTimeoutHandler

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.handler.timeout.WriteTimeoutHandler

All Implemented Interfaces:

ChannelHandler

public class WriteTimeoutHandler
extends ChannelHandlerAdapter

Raises a WriteTimeoutException when no data was written within a certain period of time.

 // The connection is closed when there is no outbound traffic
 // for 30 seconds.

 public class MyChannelInitializer extends ChannelInitializer<Channel> {
     public void initChannel(Channel channel) {
         channel.pipeline().addLast("writeTimeoutHandler", new WriteTimeoutHandler(30);
         channel.pipeline().addLast("myHandler", new MyHandler());
     }
 }

 // Handler should handle the WriteTimeoutException.
 public class MyHandler extends ChannelHandlerAdapter {
     @Override
     public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause)
             throws Exception {
         if (cause instanceof WriteTimeoutException) {
             // do something
         } else {
             super.exceptionCaught(ctx, cause);
         }
     }
 }

 ServerBootstrap bootstrap = ...;
 ...
 bootstrap.childHandler(new MyChannelInitializer());
 ...
 

See Also:

ReadTimeoutHandler, IdleStateHandler

Nested Class Summary

Nested classes/interfaces inherited from interface io.netty.channel.ChannelHandler

ChannelHandler.Sharable, ChannelHandler.Skip

Constructor Summary

Constructors

Constructor and Description
WriteTimeoutHandler(int timeoutSeconds) Creates a new instance.
WriteTimeoutHandler(long timeout, TimeUnit unit) Creates a new instance.

Method Summary

Methods

Modifier and Type	Method and Description
void	write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) Calls ChannelHandlerContext.write(Object) to forward to the next ChannelHandler in the ChannelPipeline.
protected void	writeTimedOut(ChannelHandlerContext ctx) Is called when a write timeout was detected

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

bind, channelActive, channelInactive, channelRead, channelReadComplete, channelRegistered, channelUnregistered, channelWritabilityChanged, close, connect, deregister, disconnect, exceptionCaught, flush, handlerAdded, handlerRemoved, isSharable, read, userEventTriggered

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

WriteTimeoutHandler

public WriteTimeoutHandler(int timeoutSeconds)

Creates a new instance.

Parameters:

timeoutSeconds - write timeout in seconds

WriteTimeoutHandler

public WriteTimeoutHandler(long timeout,
                   TimeUnit unit)

Creates a new instance.

Parameters:

timeout - write timeout

unit - the TimeUnit of timeout

Method Detail

write

public void write(ChannelHandlerContext ctx,
         Object msg,
         ChannelPromise promise)
           throws Exception

Description copied from class: ChannelHandlerAdapter

Calls ChannelHandlerContext.write(Object) to forward to the next ChannelHandler in the ChannelPipeline. Sub-classes may override this method to change behavior.

Specified by:

write in interface ChannelHandler

Overrides:

write in class ChannelHandlerAdapter

Parameters:

ctx - the ChannelHandlerContext for which the write operation is made

msg - the message to write

promise - the ChannelPromise to notify once the operation completes

Throws:

Exception - thrown if an error accour

writeTimedOut

protected void writeTimedOut(ChannelHandlerContext ctx)
                      throws Exception

Is called when a write timeout was detected

Throws:

Exception