Re: http fproxy ports are not closed

On Friday 02 Sep 2011 13:20:39 Dennis Nezic wrote:
> On Fri, 2 Sep 2011 00:23:00 -0400, Dennis Nezic wrote:
> > On Wed, 31 Aug 2011 15:02:14 -0400, Dennis Nezic wrote:
> > > On Wed, 31 Aug 2011 09:44:17 -0400, Dennis Nezic wrote:
> > > > netstat (netstat -pnat | grep java) shows 213 connections to my
> > > > fproxy at 127.0.0.1:8888, in a "CLOSE_WAIT" state. I only noticed
> > > > this after I could no longer access fproxy -- probably because of
> > > > some thread or connection limit. I'm not exactly sure how to
> > > > reproduce this -- it's not simply a matter of opening a connection
> > > > to fproxy.
> > > 
> > > False alarm. I think my freenet wget spider got out of control.
> > > Apologies.
> > 
> > Upon further consideration, I think it might actually be a bug. For
> > one thing, this never happened with earlier pre-1401ish versions. For
> > another thing, why are there so many sockets open, when my wget client
> > has long since closed and exited? (it has been about half an hour now
> > -- I'll provide updates if they ever do close.) CLOSE_WAIT apparently
> > means fproxy got the FIN signal from my wget, but didn't close it's
> > end?
> > 
> > I'm still not sure exactly how this bizarre behavior (of not closing
> > sockets) starts -- because if I restart freenet, and do a simple wget
> > transaction, the socket does get properly closed.
> 
> All those "HTTP socket handlers" are still open and consuming freenet
> threads. They were initiated by "wget localhost:8888/USK..." type calls
> -- and they probably failed because the sites were old. Normal browser
> access to control localhost:8888 does still close the socket properly.

Well what are they doing then? Still running the requests? This is a fundamental problem with fetching stuff over HTTP from Freenet with a low timeout - if your tool moves on to add more requests, the old requests haven't failed, they are still going.

Having said that it may eventually be possible to detect connection closed - in 0.5 there was a hack for it.

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