請教大神黑盒子錯誤

張庭維@FB

	請教各位大神 這個錯誤是甚麼 嚴重: Connection reset by peer: socket write error java.net.SocketException: Connection reset by peer: socket write error         at java.net.SocketOutputStream.socketWrite0(Native Method)         at java.net.SocketOutputStream.socketWrite(Unknown Source)         at java.net.SocketOutputStream.write(Unknown Source)         at java.io.BufferedOutputStream.flushBuffer(Unknown Source)         at java.io.BufferedOutputStream.flush(Unknown Source)         at java.io.FilterOutputStream.close(Unknown Source)         at l1j.server.server.utils.StreamUtil.close(StreamUtil.java:30)         at l1j.server.server.ClientThread.run(ClientThread.java:334)         at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)         at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)         at java.lang.Thread.run(Unknown Source)