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From: "Ralf Habacker" <Ralf DOT Habacker AT saght DOT tessag DOT com>
To: <cygwin AT cygwin DOT com>
Subject: AW: UNIX-socket problems under cygwin 1.3.2
Date: Wed, 30 May 2001 16:29:37 +0200
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> -----Ursprüngliche Nachricht-----
> Von: cygwin-owner AT sources DOT redhat DOT com
> [mailto:cygwin-owner AT sources DOT redhat DOT com]Im Auftrag von Christopher
> Faylor
> Gesendet am: Mittwoch, 30. Mai 2001 15:57
> An: Cygwin
> Betreff: Re: UNIX-socket problems under cygwin 1.3.2
>
> On Wed, May 30, 2001 at 08:03:02AM +0200, Ralf Habacker wrote:
> >>
> >> RH> I have figured out another problem on cygwin 1.3.2. On ported
> >> kde 1.1.2 unix
> >> RH> sockets doesn't work right. The function accept() returns an
> >> error. Starting
> >> RH> this application under cygwin 1.1.8-2 it works. Starting the
> >> app with strace
> >> RH> or gdb works.
> >>
> >> RH> Does anyone have some hints ?
> >>
> >> if you'd be more specific of what error accept() returns, or tell when
> >> it returns an error -- when called, or on incoming connection, or even
> >> (gasp) provide a testcase, someone surely may help.
> >
> >I have found this
> >
> >socket(PF_UNIX,SOCK_STREAM,0) = 5
> >connect(5,unix_addr.sun_path=/tmp//kfm_1002_1068BRAMSCHE_0.0,size)=okay
> >...
> >later
> >....
> >newsock = accept (sock, (struct sockaddr *) &clientname, &size))
> >Error accepting (UNIX) sock = 5 new_sock=-1 errno=113
> >
> >It is curious, that if starting this app (kpanel) like below, no errors
> >occurres.
> >
> > 	strace kpanel >/dev/null
> >
> >It seems to me, that there are some correlations between strace printing
> >code and functionality of some cygwin_accept() sub functions.
> Perhaps some
> >statements are only executed while stracing.
> >
> >If you need some additional informations tell me and I will look.
>
> Sure, some additional information in this case would be the lines of
> code in question.  There is no need to speculate on the behavior of
> strace when you have the ability to read the source code.

Reading the code and understanding it is not the same. My main task is to
port kde and I don't have very deep knowledge about the socket stuff in
cygwin. I have looked in cygwin and strace, but it's heavy. :-)

One question: How are you debbuging dll's ?

Regards

Ralf


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