我使用的ignite是嵌入式的，ignite使用两个端口，当我测试端口的dos攻击时，ignite出现java.lang.OutOfMemoryError: Direct buffer memory。
[2021-12-01 14:12:59,056][WARN ][0][0][grid-nio-worker-tcp-comm-4-#43%TcpCommunicationSpi%][ROOT][IgniteLoggerImp][88] Caught unhandled exception in NIO worker thread (restart the node). java.lang.OutOfMemoryError: Direct buffer memory
at java.nio.Bits.reserveMemory(Bits.java:695)
at java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:123)
at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:311)
at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.register(GridNioServer.java:2672)
at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.bodyInternal(GridNioServer.java:2089)
at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.body(GridNioServer.java:1910)
at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:120)
at java.lang.Thread.run(Thread.java:748)
[2021-12-01 14:12:59,057][WARN ][0][0][grid-nio-worker-tcp-comm-0-
#39%TcpCommunicationSpi%][ROOT][IgniteLoggerImp][88] Critical system error detected. Will be handled accordingly to configured handler [hnd=StopNodeOrHaltFailureHandler [tryStop=false, timeout=0, super=AbstractFailureHandler [ignoredFailureTypes=UnmodifiableSet [SYSTEM_WORKER_BLOCKED, SYSTEM_CRITICAL_OPERATION_TIMEOUT]]], failureCtx=FailureContext [type=CRITICAL_ERROR, err=java.lang.OutOfMemoryError: Direct buffer memory]] java.lang.OutOfMemoryError: Direct buffer memory
at java.nio.Bits.reserveMemory(Bits.java:695)
at java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:123)
at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:311)
at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.register(GridNioServer.java:2672)
at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.bodyInternal(GridNioServer.java:2089)
at org.apache.ignite.internal.util.nio.GridNioServer$AbstractNioClientWorker.body(GridNioServer.java:1910)
at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:120)
如何解决端口DoS攻击？
None
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