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kotlinlang

hello there, I'm using ktor websockets with netty and getting the following stacktrace (thread):

```Exception in thread "nioEventLoopGroup-3-2" io.ktor.util.cio.ChannelWriteException: Cannot write to a channel
        at io.ktor.server.netty.cio.NettyResponsePipeline.processCallFailed(NettyResponsePipeline.kt:144)
        at io.ktor.server.netty.cio.NettyResponsePipeline.access$processCallFailed(NettyResponsePipeline.kt:26)
        at io.ktor.server.netty.cio.NettyResponsePipeline.processJobs(NettyResponsePipeline.kt:447)
        at io.ktor.server.netty.cio.NettyResponsePipeline$processJobs$1.invokeSuspend(NettyResponsePipeline.kt)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
        at kotlinx.coroutines.DispatchedTask.run(Dispatched.kt:238)
        at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:416)
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:515)
        at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:918)
        at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
        at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.nio.channels.ClosedChannelException
        at io.netty.channel.AbstractChannel$AbstractUnsafe.newClosedChannelException(AbstractChannel.java:955)
        at io.netty.channel.AbstractChannel$AbstractUnsafe.write(AbstractChannel.java:863)
        at io.netty.channel.DefaultChannelPipeline$HeadContext.write(DefaultChannelPipeline.java:1365)
        at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:716)
        at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:763)
        at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:789)
        at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:757)
        at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:766)
        at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:789)
        at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:757)
        at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:766)
        at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:789)
        at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:757)
        at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:812)
        at io.ktor.server.netty.cio.NettyResponsePipeline$processBodyFlusher$2.invokeSuspend(NettyResponsePipeline.kt:312)
        ... 9 more
```

The `Exception in thread ...` hints me that it is an uncaught one, so the thread is lost, right? Is that intended behavior?