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  1. JDK
  2. JDK-4960962

(so) SocketChannel.close() does not close immediately when channel is registered

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Details

    • Bug
    • Resolution: Fixed
    • P3
    • 6
    • 1.4.0
    • core-libs
    • None
    • b33
    • unknown
    • generic

    Description

      SocketChannel.close() is not closing the underlying
      socket when the channel is non blocking and registered with a
      Selector. [See comments for simple test case]

      The problem seems to be in the socket pre/post close logic
      and there are actually a couple of bugs I believe.

      1. On Unix the dummy version of NativeDispatcher.preClose()
         is being called instead of the one in FileDispatcher. This
         is because SocketDispatcher extends NativeDispatcher instead
         of FileDispatcher. So, if you make SocketDispatcher extend
         FileDispatcher, this fixes the problem on Unix.

      2. The problem also happens on Windows, presumably because the
         actual socket close should be happening (but is not) in the preClose()
         function.

      Strangely, this seems to be a long standing issue. I can reproduce with
      every release back to 1.4.0.

      Attachments

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-6215050 (so) SocketChannel created in CLOSE_WAIT and never cleaned up.. File Descriptor leak

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-6379892 Remove @ignore from test since prerequisite is fixed

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-6346658 (se) Selector briefly spins when asynchronously closing a registered channel [win]

          • P3 - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. JDK-7130796 (se) Selector.select may hang due to asynchronous close of socket in poll array [win]

          • P3 - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. JDK-4957695 URLJarFile.retrieve does not delete tmpFile on IOException

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Activity

            People

              sherman Xueming Shen
              michaelm Michael McMahon
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              Dates

                Created:
                Updated:
                Resolved:
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