connection reset in spring integration ftp adapter - spring

Question

I am using spring integration's ftp down loader to download the files in the local directory. after sometimes it gives me the below error.
<bean id="ftpSessionFactory"
class="org.springframework.integration.ftp.session.DefaultFtpSessionFactory">
<property name="host" value="${ftp.host}" />
<property name="port" value="$ftp.port}" />
<property name="username" value="${ftp.user}" />
<property name="password" value="${ftp.password}" />
<property name="clientMode" value="2" />
<property name="fileType" value="2" />
<property name="bufferSize" value="100000" />
</bean>
<int-ftp:inbound-channel-adapter id="ftpInbound"
channel="nullChannel"
session-factory="ftpSessionFactory"
charset="UTF-8"
delete-remote-files="false"
remote-directory="${ftp.remotedir}"
preserve-timestamp="true"
auto-create-local-directory="true"
local-directory="${ftp.localdir}"
filter="remoteFileListFilter"
temporary-file-suffix=".writing">
<int:poller fixed-rate="1000" />
</int-ftp:inbound-channel-adapter>
</beans>
error is :
ERROR 2015-07-28 01:41:43,426 [task-scheduler-1][] org.springframework.integration.handler.LoggingHandler - org.springframework.messaging.MessagingException: Problem occurred while synchronizing remote to local directory
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer.synchronizeToLocalDirectory(AbstractInboundFileSynchronizer.java:193)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizingMessageSource.receive(AbstractInboundFileSynchronizingMessageSource.java:167)
at org.springframework.integration.endpoint.SourcePollingChannelAdapter.receiveMessage(SourcePollingChannelAdapter.java:124)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:190)
at org.springframework.integration.endpoint.AbstractPollingEndpoint.access$000(AbstractPollingEndpoint.java:55)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:149)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:146)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller$1.run(AbstractPollingEndpoint.java:284)
at org.springframework.integration.util.ErrorHandlingTaskExecutor$1.run(ErrorHandlingTaskExecutor.java:52)
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:49)
at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller.run(AbstractPollingEndpoint.java:278)
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
at org.springframework.scheduling.concurrent.ReschedulingRunnable.run(ReschedulingRunnable.java:81)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
Caused by: org.springframework.messaging.MessagingException: Failed to execute on session
at org.springframework.integration.file.remote.RemoteFileTemplate.execute(RemoteFileTemplate.java:311)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer.synchronizeToLocalDirectory(AbstractInboundFileSynchronizer.java:167)
... 20 more
Caused by: java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(SocketInputStream.java:196)
at java.net.SocketInputStream.read(SocketInputStream.java:122)
at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:283)
at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:325)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:177)
at java.io.InputStreamReader.read(InputStreamReader.java:184)
at java.io.BufferedReader.fill(BufferedReader.java:154)
at java.io.BufferedReader.readLine(BufferedReader.java:317)
at java.io.BufferedReader.readLine(BufferedReader.java:382)
at org.apache.commons.net.ftp.FTPFileEntryParserImpl.readNextEntry(FTPFileEntryParserImpl.java:53)
at org.apache.commons.net.ftp.FTPListParseEngine.readStream(FTPListParseEngine.java:128)
at org.apache.commons.net.ftp.FTPListParseEngine.readServerList(FTPListParseEngine.java:104)
at org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:3302)
at org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:3271)
at org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java:2930)
at org.springframework.integration.ftp.session.FtpSession.list(FtpSession.java:68)
at org.springframework.integration.ftp.session.FtpSession.list(FtpSession.java:41)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer$1.doInSession(AbstractInboundFileSynchronizer.java:171)
at org.springframework.integration.file.remote.synchronizer.AbstractInboundFileSynchronizer$1.doInSession(AbstractInboundFileSynchronizer.java:167)
at org.springframework.integration.file.remote.RemoteFileTemplate.execute(RemoteFileTemplate.java:302)

Answer 1

Caused by: java.net.SocketException: Connection reset
It just means the server closed the connection - look at the server logs.