VisualVM
  1. VisualVM
  2. VISUALVM-482

"Connection Refused" bug happens again for Windows 7 (64-bit)

    Details

    • Type: Bug Bug
    • Status: Open
    • Priority: Major Major
    • Resolution: Unresolved
    • Affects Version/s: 1.3.3
    • Fix Version/s: None
    • Component/s: code
    • Labels:
      None
    • Environment:

      Windows 7 (version 6.1), 64bit
      Jdk1.7 (64-bit version)

      Description

      When start VisualVM1.3.3 from Windows 7 (64bit),
      it took too long time to scan local running JAVA applications.
      I have to wait nearly 1 minute before VisualVM find any application other than itself.

      Then I investigated the log, in which I found "Connection Time out" cased by "Connection Refused".

      I saw similar bug is reported as VisualVM-74, and the problem should already been fixed.
      But unfortunately it appeared again.

        Activity

        Hide
        cnkmym added a comment -

        Then I change my jdk from 1.7 downto 1.6 (6u27), but the problem is still there.

        I change computer to 32-bit version, then no problem is found.

        Show
        cnkmym added a comment - Then I change my jdk from 1.7 downto 1.6 (6u27), but the problem is still there. I change computer to 32-bit version, then no problem is found.
        Hide
        cnkmym added a comment -

        Sorry, i already found the problem.
        It lies in my personal firewall installed in computer.

        I use ESET Smart Security, which automatically blocks all UDP connection of windows svchost.

        Since inside visualVM, it will try to use SSL pattern to assist discovering local application,
        this action is blocked . The log from ESET shows "SSDP(UDP Request) is blocked".

        The solutions are:
        1, disable your firewall
        (OR)
        2, change block strategy, enable SSDP by java.

        Show
        cnkmym added a comment - Sorry, i already found the problem. It lies in my personal firewall installed in computer. I use ESET Smart Security, which automatically blocks all UDP connection of windows svchost. Since inside visualVM, it will try to use SSL pattern to assist discovering local application, this action is blocked . The log from ESET shows "SSDP(UDP Request) is blocked". The solutions are: 1, disable your firewall (OR) 2, change block strategy, enable SSDP by java.

          People

          • Assignee:
            thurka
            Reporter:
            cnkmym
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            Dates

            • Created:
              Updated: