com.corundumstudio.socketio.listener.DefaultExceptionListener (DefaultExceptionListener.java:57) - Connection reset by peer

[rachelxj]

I got a lot of this exception when I use version 1.6.7, any idea what will cause it?
ERROR [nioEventLoopGroup-3-2] com.corundumstudio.socketio.listener.DefaultExceptionListener (DefaultExceptionListener.java:57) - Connection reset by peer
java.io.IOException: Connection reset by peer
at sun.nio.ch.FileDispatcherImpl.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223)
at sun.nio.ch.IOUtil.read(IOUtil.java:192)
at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380)
at io.netty.buffer.UnpooledUnsafeDirectByteBuf.setBytes(UnpooledUnsafeDirectByteBuf.java:447)
at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:881)
at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:241)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:119)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)
at java.lang.Thread.run(Thread.java:745)

[mrniko]

This issue caused by closed connection from client side. Thus server attempts write to closed channel and gets this error.

[rachelxj]

I checked isChannelOpen when I send message to client, is there any way I can avoid this exception?

[mrniko]

I checked isChannelOpen when I send message to client

This check is not enough because channel can be closed right after isChannelOpen method invocation.

[rachelxj]

so does this mean I can't avoid this exception

[mrniko]

You are correct

[rachelxj]

Thanks