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Re: what thread or module is listening on a port?

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On 2/23/2022 7:37 AM, Andreas Leitgeb wrote:
> Given a java process (that uses a couple of 3rd-party libs and stuff from
> maven repo) and a TCP port number that this process is listening on (for all
> interfaces), what options do I have for finding out, which "part" of the
> process is responsible for the listening port?
> 
> Once I see, which of the umpty libraries did it, I can look for options
> to either unconfigure it, bind to localhost, or at least understand it.
> 
> That's on Solaris (Unix).
> $ netstat -aun | grep "54157.*LISTEN"     # gives me e.g:
>        *.52634              *.*            xxx  54157 java 0      0  256000      0 LISTEN
> [...]
     Not a Java answer, but: Could you use dtrace to watch the
port creations as they go by and see which piece of code
instigates each one?  (My Solaris days are a distant memory
and my dtrace skills were never super-keen, but it seems to
me dtrace ought to be able to do the trick.)

     If the process opens ten thousand ports this could get
tedious, but still ...

-- 
esosman@comcast-dot-net.invalid
Look on my code, ye Hackers, and guffaw!

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Thread

what thread or module is listening on a port? Andreas Leitgeb <avl@logic.at> - 2022-02-23 12:37 +0000
  Re: what thread or module is listening on a port? Eric Sosman <esosman@comcast-dot-net.invalid> - 2022-02-23 10:51 -0500
    Re: what thread or module is listening on a port? Martin Gregorie <martin@mydomain.invalid> - 2022-02-23 16:51 +0000
  Re: what thread or module is listening on a port? Arne Vajhøj <arne@vajhoej.dk> - 2022-02-23 12:15 -0500
    Re: what thread or module is listening on a port? Andreas Leitgeb <avl@logic.at> - 2022-02-24 23:04 +0000
    Re: what thread or module is listening on a port? Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2022-03-19 12:47 +0100

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