[VFS-567] Timeout in vsFTPd causes exception when executing another command

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1
• Fix Version/s: 2.1

Environment

vsFTPd 3.0.2 on Kubuntu 14.10

• Assignee: Bernd Eckenfels
• Reporter: Antonio Petrelli
• Created: 30/Mar/15 10:38
• Updated: 19/May/16 18:25
• Resolved: 23/Sep/15 19:57

Description

After a timeout in vsFTPd, a QUIT command is sent and a 421 Timeout response is sent back to the Java client. After that, a SocketException (broken pipe) is raised and not correctly managed.

I am attaching a test case, this is the stack trace:

Exception in thread "main" org.apache.commons.vfs2.FileSystemException: Could not determine the type of file "ftps://localhost/javadev/vfs/input".
at org.apache.commons.vfs2.provider.AbstractFileObject.getType(AbstractFileObject.java:1526)
at QuitProblemMain.main(QuitProblemMain.java:41)
Caused by: java.net.SocketException: Pipe interrotta
at java.net.SocketOutputStream.socketWrite0(Native Method)
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:109)
at java.net.SocketOutputStream.write(SocketOutputStream.java:153)
at sun.security.ssl.OutputRecord.writeBuffer(OutputRecord.java:431)
at sun.security.ssl.OutputRecord.write(OutputRecord.java:417)
at sun.security.ssl.SSLSocketImpl.writeRecordInternal(SSLSocketImpl.java:864)
at sun.security.ssl.SSLSocketImpl.writeRecord(SSLSocketImpl.java:835)
at sun.security.ssl.AppOutputStream.write(AppOutputStream.java:123)
at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221)
at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:291)
at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:295)
at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141)
at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229)
at java.io.BufferedWriter.flush(BufferedWriter.java:254)
at org.apache.commons.net.ftp.FTP.__send(FTP.java:505)
at org.apache.commons.net.ftp.FTP.sendCommand(FTP.java:479)
at org.apache.commons.net.ftp.FTPSClient.sendCommand(FTPSClient.java:541)
at org.apache.commons.net.ftp.FTP.sendCommand(FTP.java:608)
at org.apache.commons.net.ftp.FTP.sendCommand(FTP.java:582)
at org.apache.commons.net.ftp.FTP.quit(FTP.java:864)
at org.apache.commons.vfs2.provider.ftp.FTPClientWrapper.disconnect(FTPClientWrapper.java:118)
at org.apache.commons.vfs2.provider.ftp.FTPClientWrapper.listFiles(FTPClientWrapper.java:152)
at org.apache.commons.vfs2.provider.ftp.FtpFileObject.doGetChildren(FtpFileObject.java:136)
at org.apache.commons.vfs2.provider.ftp.FtpFileObject.getChildFile(FtpFileObject.java:106)
at org.apache.commons.vfs2.provider.ftp.FtpFileObject.getInfo(FtpFileObject.java:192)
at org.apache.commons.vfs2.provider.ftp.FtpFileObject.doGetType(FtpFileObject.java:320)
at org.apache.commons.vfs2.provider.AbstractFileObject.getType(AbstractFileObject.java:1517)
... 1 more

Issue Links

• incorporates: VFS-559 FTPClientWrapper is not robust against some failures