Got an exception:" An existing connection was forcibly closed by the remote host...."

When I initiative disconnected TCP connection from client side, then I got an exception:

Exception: System.Net.Sockets.SocketException (0x80004005): An existing connection was forcibly closed by the remote host
at DotNetty.Transport.Channels.Sockets.SocketChannelAsyncOperation.Validate()
at DotNetty.Transport.Channels.Sockets.AbstractSocketByteChannel.SocketByteChannelUnsafe.FinishRead(SocketChannelAsyncOperation operation)

How can I avoid this exception?

Below is my code snippet:

` try
{
serverBootstrap
.Group(bossGroup, workerGroup)
.Channel()
.Option(ChannelOption.SoBacklog, 200)
.Handler(new MainHandler())
.ChildHandler(
new ActionChannelInitializer(
channel =>
{
IChannelPipeline pipeline = channel.Pipeline;

pipeline.AddLast(new ByteArrayDecoder());
pipeline.AddLast(new ByteArrayEncoder());

pipeline.AddLast(new DotnettyServerHandler());
pipeline.AddLast(new SendRabbitMqHandler());

pipeline.AddLast("heartbeat",
new IdleStateHandler(TimeSpan.FromMinutes(_clientTimeout), TimeSpan.FromMinutes(_clientTimeout),
TimeSpan.FromMinutes(_clientTimeout)));
pipeline.AddLast(new HeartBeatServerHandler());
}));

IChannel boundChannel = await serverBootstrap.BindAsync(port);

Console.WriteLine($"Server started port:{port}");`