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Symptom

When executing a process which contains an FTP action, an error is raised by the FTP action, similar to this one:

java.net.SocketException: Connection reset
                at java.net.SocketInputStream.read(SocketInputStream.java:168)
                at sun.nio.cs.StreamDecoder$CharsetSD.readBytes(StreamDecoder.java:452)
                at sun.nio.cs.StreamDecoder$CharsetSD.implRead(StreamDecoder.java:494)
                at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:222)
                at java.io.InputStreamReader.read(InputStreamReader.java:177)
                at java.io.BufferedReader.fill(BufferedReader.java:136)
                at java.io.BufferedReader.readLine(BufferedReader.java:299)
                at java.io.BufferedReader.readLine(BufferedReader.java:362)
                at org.apache.commons.net.ftp.FTPFileEntryParserImpl.readNextEntry(FTPFileEntryParserImpl.java:53)
                at org.apache.commons.net.ftp.FTPListParseEngine.readStream(FTPListParseEngine.java:157)
                at org.apache.commons.net.ftp.FTPListParseEngine.readServerList(FTPListParseEngine.java:100)
                at org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:2303)
                at org.apache.commons.net.ftp.FTPClient.initiateListParsing(FTPClient.java:2269)
                at org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java:2046)
                at org.apache.commons.net.ftp.FTPClient.listFiles(FTPClient.java:2093)
                at com.indy.engine.actionCodes.FtpGetActionCodeI.executeSimpleCode(SourceFile:390)
                at com.indy.engine.action.common.ActionCodeTypeI.executeCode(SourceFile:1646)
                at com.indy.engine.action.common.ActionCodeTypeI.run(SourceFile:1805)
                at java.lang.Thread.run(Thread.java:738)

The FTP server is up and running.

Solution

This can happen when the FTP server is busy and takes some time to respond, resulting in a timeout. This may occur when establishing the FTP connection (connection timeout), or when trying to get/send files (data timeout).

The solution is to increase the "Connection Timeout" and "Data Timeout" on the FTP action. They are expressed in milliseconds. For example 10000 means 10 seconds.

Knowledge Base

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