Commons Net
  1. Commons Net
  2. NET-434

FTPClient fails to close local listener socket when command socket channel encounter "ReadTimeoutException"

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Major Major
    • Resolution: Fixed
    • Affects Version/s: 2.2, 3.0.1
    • Fix Version/s: 3.1
    • Component/s: FTP
    • Labels:
      None
    • Environment:

      Red Hat Enterprise Linux Server release 5.6 (Tikanga) x64
      java version "1.6.0_26"
      Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
      Java HotSpot(TM) 64-Bit Server VM (build 20.1-b02, mixed mode)

      Description

      FtpClient connect to an ftp server and login successfully, call ftpClient.listFiles() method to list remote directory,
      and ftp server is vsftp and use active mode.
      on commons-net-3.0.1 class org.apache.commons.net.ftp.FTPClient at line 680 :
      if (!FTPReply.isPositivePreliminary(sendCommand(command, arg)))

      { server.close(); return null; }

      call sendCommand throw an exception blow:

      java.net.SocketTimeoutException: Read timed out
      at java.net.SocketInputStream.socketRead0(Native Method)
      at java.net.SocketInputStream.read(SocketInputStream.java:129)
      at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:264)
      at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:306)
      at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:158)
      at java.io.InputStreamReader.read(InputStreamReader.java:167)
      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.FTP.__getReply(FTP.java:299)
      at org.apache.commons.net.ftp.FTP.sendCommand(FTP.java:500)

      class org.apache.commons.net.ftp.FTPClient at line 648 : ServerSocket server = serverSocketFactory.createServerSocket(getActivePort(), 1, getHostAddress());

      the local listener socket "server" is not close when sendCommand method throws exception.

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          • Assignee:
            Unassigned
            Reporter:
            zhangyong
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            Dates

            • Created:
              Updated:
              Resolved:

              Development