Re: http fproxy ports are not closed

On Thu, 22 Sep 2011 07:09:58 +0200, David ‘Bombe’ Roden wrote:
> On WOCHENTAG, tT. MONAT JJJJ 23:21:53 Dennis Nezic wrote:
> 
> > And, I still don't quite understand why you can't check the status
> > of a socket, or be notified of wget's FIN signal (It did send one,
> > didn't it, or am I missing something?) -- isn't that fundamental to
> > any tcp connection??
> 
> As Matthew already told you, finding out whether a socket has been
> disconnected can only be done by reading from or writing to the
> socket. We don’t do either until the request is finished. There’s
> your answer and it won’t change if you ask more often.

What determines whether a request is finished? When I browse freesites
normally, those requests expire gracefully.

Also, this bug (something fishy is definitely going on) is stranger
than I described, because I'm not exactly sure what creates those
abandoned open threads/sockets -- it's not simply a wget request, nor
one that ends in a failure (500 Internal Error) -- those all end
well. :S.

A thread dump says they (all 50+ of them) are locked in
FProxyFetchWaiter:

 "HTTP socket handler@15723301
   (1994)" daemon prio=10 tid=0x08a5f800 nid=0x76b6 in Object.wait
   ()  [0xb1ffe000]

  java.lang.Thread.State: WAITING 
   (on object monitor)

  at java.lang.Object.wait
   (Native Method)

  at java.lang.Object.wait
   (Object.java:485)

  at freenet.clients.http.FProxyFetchWaiter.getResult
   (FProxyFetchWaiter.java:28)

  - locked <0x6dc52720> 
   (a freenet.clients.http.FProxyFetchWaiter)

  at freenet.clients.http.FProxyToadlet.innerHandleMethodGET
   (FProxyToadlet.java:663)

  at freenet.clients.http.FProxyToadlet.handleMethodGET
   (FProxyToadlet.java:459)

  at sun.reflect.GeneratedMethodAccessor15.invoke
   (Unknown Source)

  at sun.reflect.DelegatingMethodAccessorImpl.invoke
   (DelegatingMethodAccessorImpl.java:25)

  at java.lang.reflect.Method.invoke
   (Method.java:597)

  at freenet.clients.http.ToadletContextImpl.handle
   (ToadletContextImpl.java:550)

  at freenet.clients.http.SimpleToadletServer$SocketHandler.run
   (SimpleToadletServer.java:989)

  at freenet.support.PooledExecutor$MyThread.realRun
   (PooledExecutor.java:233)

  at freenet.support.io.NativeThread.run
   (NativeThread.java:130)
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