netty报错：远程主机强迫关闭了一个现有的连接。

遇到

java.io.IOException: 远程主机强迫关闭了一个现有的连接。
	at sun.nio.ch.SocketDispatcher.read0(Native Method) ~[na:1.8.0_211]
	at sun.nio.ch.SocketDispatcher.read(Unknown Source) ~[na:1.8.0_211]
	at sun.nio.ch.IOUtil.readIntoNativeBuffer(Unknown Source) ~[na:1.8.0_211]
	at sun.nio.ch.IOUtil.read(Unknown Source) ~[na:1.8.0_211]
	at sun.nio.ch.SocketChannelImpl.read(Unknown Source) ~[na:1.8.0_211]
	at io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:288) ~[netty-all-4.1.36.Final.jar!/:4.1.36.Final]
	at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1125) ~[netty-all-4.1.36.Final.jar!/:4.1.36.Final]
	at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:347) ~[netty-all-4.1.36.Final.jar!/:4.1.36.Final]
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:148) ~[netty-all-4.1.36.Final.jar!/:4.1.36.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:682) [netty-all-4.1.36.Final.jar!/:4.1.36.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:617) [netty-all-4.1.36.Final.jar!/:4.1.36.Final]
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:534) [netty-all-4.1.36.Final.jar!/:4.1.36.Final]
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:496) [netty-all-4.1.36.Final.jar!/:4.1.36.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:906) [netty-all-4.1.36.Final.jar!/:4.1.36.Final]
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-all-4.1.36.Final.jar!/:4.1.36.Final]
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-all-4.1.36.Final.jar!/:4.1.36.Final]
	at java.lang.Thread.run(Unknown Source) [na:1.8.0_211]

我遇到的情况是客户端主动关闭了现有连接，与服务端没有关系。