2018-11-09 12:29:07.596 WARN ClientConnector - [DDS2 Standalone Transport Client] Primary session disconnected. Disconnecting transport client
2018-11-09 12:29:07.621 ERROR ClientProtocolHandler - Nawiązane połączenie zostało przerwane przez oprogramowanie zainstalowane w komputerze-hoście
java.io.IOException: Nawiązane połączenie zostało przerwane przez oprogramowanie zainstalowane w komputerze-hoście
at sun.nio.ch.SocketDispatcher.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(Unknown Source)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(Unknown Source)
at sun.nio.ch.IOUtil.read(Unknown Source)
at sun.nio.ch.SocketChannelImpl.read(Unknown Source)
at io.netty.buffer.PooledUnsafeDirectByteBuf.setBytes(PooledUnsafeDirectByteBuf.java:288)
at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1108)
at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:345)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:148)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:647)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:582)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:499)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:461)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
at java.lang.Thread.run(Unknown Source)
please tell me what should I look for. I'm totally lost as it happens randomly and doesn't point to my code

PooledUnsafeDirectByteBuf I think I know now. It wants to eat memory and it doesn't get it.... I need more RAM