Hello there! We have an FTP server running for the last 4 months. It's quite stable, but a few weeks ago we noticed a strange behavior. When sending large files (we experienced this with files larger than 100mb). The client side gets an acknowledge, but on the server side there's an error:
[31/12/09 11:12:45:045 BRST] ERROR org.apache.ftpserver.impl.DefaultFtpHandler: Exception caught, closing session java.io.IOException: Connection reset by peer at sun.nio.ch.FileDispatcher.read0(Native Method) at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:21) at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:233) at sun.nio.ch.IOUtil.read(IOUtil.java:206) at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:236) at org.apache.mina.transport.socket.nio.NioProcessor.read(NioProcessor.java:179) at org.apache.mina.transport.socket.nio.NioProcessor.read(NioProcessor.java:41) at org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:585) at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:563) at org.apache.mina.core.polling.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:552) at org.apache.mina.core.polling.AbstractPollingIoProcessor.access$400(AbstractPollingIoProcessor.java:56) at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:891) at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) And because of this, the onuploadend is called twice. We can reproduce this with several clients, with large files, on all of them, the error happens. The problem is that our FTPLet depends on the onuploadend to process the file sent. Is there a reason for this? Is there any other info needed to help me on this? Regards -- The intuitive mind is a sacred gift and the rational mind is a faithful servant. We have created a society that honors the servant and has forgotten the gift.