Hi, I am seeing below exception in our ignite thick client logs. I am seeing remote address 10.136.96.174 which is not in our ignite cluster list and what I infer from the below logs is that someone is trying to connect to out ignite instances. Please let me know if my assumption is wrong. Also is there a better way to handle these scenarios ? Appreciate any help/pointers on this. 2021-11-27T13:35:59,656 -0500|grid-nio-worker-tcp-comm-2-#25%TcpCommunicationSpi%|||WARN |org.apache.ignite.spi.communication.tcp.TcpCommunicationSpi.warning.295| - Unknown connection detected (is some other software connecting to this Ignite port?) [rmtAddr=/10.136.96.174:52490, locAddr=/10.148.207.245:47101] 2021-11-27T13:35:59,658 -0500|grid-nio-worker-tcp-comm-3-#26%TcpCommunicationSpi%|||INFO |org.apache.ignite.spi.communication.tcp.TcpCommunicationSpi.info.285| - Accepted incoming communication connection [locAddr=/10.148.207.245:47101, rmtAddr=/10.136.96.174:52493] 2021-11-27T13:35:59,676 -0500|grid-nio-worker-tcp-comm-3-#26%TcpCommunicationSpi%|||WARN |org.apache.ignite.spi.communication.tcp.TcpCommunicationSpi.warning.295| - Unknown connection detected (is some other software connecting to this Ignite port?) [rmtAddr=/10.136.96.174:52493, locAddr=/10.148.207.245:47101] 2021-11-27T13:35:59,678 -0500|grid-nio-worker-tcp-comm-0-#23%TcpCommunicationSpi%|||INFO |org.apache.ignite.spi.communication.tcp.TcpCommunicationSpi.info.285| - Accepted incoming communication connection [locAddr=/10.148.207.245:47101, rmtAddr=/10.136.96.174:52496] 2021-11-27T13:36:01,712 -0500|grid-nio-worker-tcp-comm-0-#23%TcpCommunicationSpi%|||ERROR|org.apache.ignite.spi.communication.tcp.TcpCommunicationSpi.error.310| - Failed to process selector key [ses=GridSelectorNioSessionImpl [worker=DirectNioClientWorker [super=AbstractNioClientWorker [idx=0, bytesRcvd=533640, bytesSent=2405277, bytesRcvd0=0, bytesSent0=0, select=true, super=GridWorker [name=grid-nio-worker-tcp-comm-0, igniteInstanceName=TcpCommunicationSpi, finished=false, heartbeatTs=1638038160689, hashCode=161343674, interrupted=false, runner=grid-nio-worker-tcp-comm-0-#23%TcpCommunicationSpi%]]], writeBuf=java.nio.DirectByteBuffer[pos=0 lim=32768 cap=32768], readBuf=java.nio.DirectByteBuffer[pos=0 lim=32768 cap=32768], inRecovery=null, outRecovery=null, closeSocket=true, outboundMessagesQueueSizeMetric=o.a.i.i.processors.metric.impl.LongAdderMetric@69a257d1, super=GridNioSessionImpl [locAddr=/10.148.207.245:47101, rmtAddr=/10.136.96.174:52496, createTime=1638038159678, closeTime=0, bytesSent=18, bytesRcvd=0, bytesSent0=0, bytesRcvd0=0, sndSchedTime=1638038159678, lastSndTime=1638038159678, lastRcvTime=1638038159678, readsPaused=false, filterChain=FilterChain[filters=[GridNioCodecFilter [parser=o.a.i.i.util.nio.GridDirectParser@6613bbbf, directMode=true], GridConnectionBytesVerifyFilter], accepted=true, markedForClose=false]]] java.io.IOException: Connection reset by peer at sun.nio.ch.FileDispatcherImpl.read0(Native Method) at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39) at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) at sun.nio.ch.IOUtil.read(IOUtil.java:192) at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:379) at org.apache.ignite.internal.util.nio.GridNioServer$DirectNioClientWorker.processRead(GridNioServer.java:1337) at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.processSelectedKeysOptimized(GridNioServer.java:2494) at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.bodyInternal(GridNioServer.java:2259) at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.body(GridNioServer.java:1896) at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:120) at java.lang.Thread.run(Thread.java:748) 2021-11-27T13:36:04,703 -0500|grid-timeout-worker-#22|||WARN |org.apache.ignite.internal.processors.odbc.ClientListenerNioListener.warning.295| - Unable to perform handshake within timeout [timeout=10000, remoteAddr=/10.136.96.174:51991] 2021-11-27T13:36:17,069 -0500|grid-nio-worker-client-listener-2-#34|||ERROR|org.apache.ignite.internal.processors.odbc.ClientListenerProcessor.error.310| - Failed to process selector key [ses=GridSelectorNioSessionImpl [worker=DirectNioClientWorker [super=AbstractNioClientWorker [idx=2, bytesRcvd=448, bytesSent=0, bytesRcvd0=7, bytesSent0=0, select=true, super=GridWorker [name=grid-nio-worker-client-listener-2, igniteInstanceName=null, finished=false, heartbeatTs=1638038176060, hashCode=1355667889, interrupted=false, runner=grid-nio-worker-client-listener-2-#34]]], writeBuf=java.nio.DirectByteBuffer[pos=0 lim=43520 cap=43520], readBuf=java.nio.DirectByteBuffer[pos=0 lim=184640 cap=184640], inRecovery=null, outRecovery=null, closeSocket=true, outboundMessagesQueueSizeMetric=null, super=GridNioSessionImpl [locAddr=/10.148.207.245:10801, rmtAddr=/10.136.96.174:52993, createTime=1638038176029, closeTime=0, bytesSent=0, bytesRcvd=7, bytesSent0=0, bytesRcvd0=7, sndSchedTime=1638038176029, lastSndTime=1638038176029, lastRcvTime=1638038176040, readsPaused=false, filterChain=FilterChain[filters=[GridNioAsyncNotifyFilter, GridNioCodecFilter [parser=ClientListenerNioMessageParser, directMode=true]], accepted=true, markedForClose=false]]] java.io.IOException: Connection reset by peer at sun.nio.ch.FileDispatcherImpl.read0(Native Method) at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39) at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) at sun.nio.ch.IOUtil.read(IOUtil.java:192) at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:379) at org.apache.ignite.internal.util.nio.GridNioServer$DirectNioClientWorker.processRead(GridNioServer.java:1337) at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.processSelectedKeysOptimized(GridNioServer.java:2494) at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.bodyInternal(GridNioServer.java:2259) at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.body(GridNioServer.java:1896) at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:120) at java.lang.Thread.run(Thread.java:748) 2021-11-27T13:36:17,070 -0500|grid-nio-worker-client-listener-2-#34|||WARN |org.apache.ignite.internal.processors.odbc.ClientListenerProcessor.warning.295| - Client disconnected abruptly due to network connection loss or because the connection was left open on application shutdown. [cls=class o.a.i.i.util.nio.GridNioException, msg=Connection reset by peer] 2021-11-27T13:36:26,038 -0500|grid-timeout-worker-#22|||WARN |org.apache.ignite.internal.processors.odbc.ClientListenerNioListener.warning.295| - Unable to perform handshake within timeout [timeout=10000, remoteAddr=/10.136.96.174:52993] 2021-11-27T13:36:26,068 -0500|grid-timeout-worker-#22|||WARN |org.apache.ignite.internal.processors.odbc.ClientListenerNioListener.warning.295| - Unable to perform handshake within timeout [timeout=10000, remoteAddr=/10.136.96.174:52996] 2021-11-27T13:36:46,386 -0500|grid-timeout-worker-#22|||WARN |org.apache.ignite.internal.processors.odbc.ClientListenerNioListener.warning.295| - Unable to perform handshake within timeout [timeout=10000, remoteAddr=/10.136.96.174:53454] 2021-11-27T13:36:56,413 -0500|grid-timeout-worker-#22|||WARN |org.apache.ignite.internal.processors.odbc.ClientListenerNioListener.warning.295| - Unable to perform handshake within timeout [timeout=10000, remoteAddr=/10.136.96.174:56198] 2021-11-27T13:37:06,441 -0500|grid-timeout-worker-#22|||WARN |org.apache.ignite.internal.processors.odbc.ClientListenerNioListener.warning.295| - Unable to perform handshake within timeout [timeout=10000, remoteAddr=/10.136.96.174:57
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