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java.net.SocketException Connection reset

See original GitHub issue

“java.net.SocketException Connection reset” is not handlet correctly inside of netty.

Leading to thread crashes using [netty-4.1.72] (https://github.com/netty/netty/releases/tag/netty-4.1.72.Final)

java.net.SocketException: Connection reset
        at java.base/sun.nio.ch.SocketChannelImpl.throwConnectionReset(SocketChannelImpl.java:394)
        at java.base/sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:426)
        at io.netty.buffer.PooledByteBuf.setBytes(PooledByteBuf.java:253)
        at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1132)
        at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:350)
        at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:151)
        at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:722)
        at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:658)
        at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:584)
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:496)
        at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986)
        at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)

Issue Analytics

State:
Created 2 years ago
Comments:16 (7 by maintainers)

Top GitHub Comments

2reactions

Victorgreat4commented, Mar 31, 2022

Im having issues with the exact same problem on our tcp server, this connection reset problem: https://i.stack.imgur.com/vRlCH.png

It can happen at anytime and very hard to reproduce, sometimes during the serverhandler part and sometimes even before the initation of decoderheader and tcpserverhandler inside the TCPserver class that holds the runTCP. It started happening last week, never had any problems with this isse since 2021 - august, we have not changed the network code only data proccessing inside decoderheader. Have you any new information about this?

0reactions

chrisvestcommented, Jun 7, 2022

The netty-http thing is also logging it as it propagates through the pipeline: https://github.com/cdapio/netty-http/blob/b64b170a86d45bb6bed5ade5a4d59b4b8882f0d9/src/main/java/io/cdap/http/internal/RequestRouter.java#L110-L140

So I suspect no threads are actually crashing, and it’s just messages being logged from places that don’t show up in the stack trace.

I think we can close this.

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