Pine 4.58 for Cygwin takes a very long time to close a certain IMAP INBOX

Pine 4.58 for Cygwin takes a very long time to close a certain IMAP INBOX

[Frédéric L. W. Meunier]

I don't know what's wrong, but can't reproduce with the
same versions of PC-Pine and Pine for Linux.

I have 5 IMAP accounts. The main INBOX is fastmail.fm.

The others are

incoming-folders=PostaccessLite {mail.postaccesslite.com/user=xxx@postaccesslite.com}INBOX,
        PostaccessLite-fredlwm {mail.postaccesslite.com/user=yyy@postaccesslite.com}INBOX,
        Bluebottle {mail.bluebottle.com/user=xxx@bluebottle.com}INBOX,
        MyRealBox {imap.myrealbox.com/ssl/user=xxx}INBOX

When I switch from one of the PostAcessLite accounts to
another, no matter if they're empty, have a single message, or
more, Pine stays at the "Closing folder foo" for a very long
time, like 30s to 1 minute, and then opens the one I select.

I have all latest packages on XP Professional SP1 with all
updates, and use NTFS.

Since PostacessLite doesn't seem to allow new users to create
accounts, I'm willing to let Eduardo log in mines.

Or let me know how to "debug" it. Pine's -d imap4 doesn't show
anything different.

-- 
How to contact me - http://www.pervalidus.net/contact.html

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

Re: Pine 4.58 for Cygwin takes a very long time to close a certain IMAP INBOX

[Eduardo Chappa]

On Sun, 9 Nov 2003, Frédéric L. W. Meunier wrote:

:) I don't know what's wrong, but can't reproduce with the same versions
:) of PC-Pine and Pine for Linux.
:)
:) I have 5 IMAP accounts. The main INBOX is fastmail.fm.
:)
:) [deleted configuration of incoming folders]
:)
:) When I switch from one of the PostAcessLite accounts to another, no
:) matter if they're empty, have a single message, or more, Pine stays at
:) the "Closing folder foo" for a very long time, like 30s to 1 minute,
:) and then opens the one I select.
:)
:) Or let me know how to "debug" it. Pine's -d imap4 doesn't show anything
:) different.

Hello Frédéric,

  Could it be possible that you show me the output of pine -d 9?. If you
can show me the part where you switch mailboxes, it would be great. At the
top of my head, among things you may want to look into are the
rsh-timeout, and ssh-timeout. Make sure both of them are equal to 0.

  Let me know how that goes.

-- 
Eduardo
http://www.math.washington.edu/~chappa/pine/

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

OpenSSL problem ? (Was Re: Pine 4.58 for Cygwin takes a very long time to close a certain IMAP INBOX)

[Frédéric L. W. Meunier]

OK, so here's what turns out to be an OpenSSL issue. All thanks
to Eduardo.

On Mon, 10 Nov 2003, Eduardo Chappa wrote:

> *** Frédéric L. W. Meunier wrote on Nov 11, 2003:
>
> :) > Is there any delay?
> :)
> :) Yes.
>
> Ok, this means that the problem is not Pine. It's openssl. You may want to
> repeat the experiment and see if
>
> openssl s_client -connect mail.postaccesslite.com:993
>
> a logout
>
> repeats the problem.

Yes, it does, and may be easier for others to try to reproduce.

> In any case, the problem is not Pine. You may want to contact
> the openssl maintainer to see what s/he says.

At first I'm redirecting it to the Cygwin mailing-list since it
works on Linux.

For those of you who aren't aware, all started with
http://sources.redhat.com/ml/cygwin/2003-11/msg00295.html

How to reproduce it:

$ openssl s_client -connect mail.postaccesslite.com:993
...
a logout
* BYE Courier-IMAP server shutting down
a OK LOGOUT completed
read:errno=0

It takes around a minute to return to the shell prompt after
the 'a logout'.

Eduardo couldn't reproduce it.

-- 
How to contact me - http://www.pervalidus.net/contact.html

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

Re: OpenSSL problem ? (Was Re: Pine 4.58 for Cygwin takes a very long time to close a certain IMAP INBOX)

[Corinna Vinschen]

On Tue, Nov 11, 2003 at 01:52:36AM -0200, Fr?d?ric L. W. Meunier wrote:
> OK, so here's what turns out to be an OpenSSL issue. All thanks
> to Eduardo.
> 
> On Mon, 10 Nov 2003, Eduardo Chappa wrote:
> 
> > *** Fr?d?ric L. W. Meunier wrote on Nov 11, 2003:
> >
> > :) > Is there any delay?
> > :)
> > :) Yes.
> >
> > Ok, this means that the problem is not Pine. It's openssl. You may want to
> > repeat the experiment and see if
> >
> > openssl s_client -connect mail.postaccesslite.com:993
> >
> > a logout
> >
> > repeats the problem.
> 
> Yes, it does, and may be easier for others to try to reproduce.
> 
> > In any case, the problem is not Pine. You may want to contact
> > the openssl maintainer to see what s/he says.
> 
> At first I'm redirecting it to the Cygwin mailing-list since it
> works on Linux.
> 
> For those of you who aren't aware, all started with
> http://sources.redhat.com/ml/cygwin/2003-11/msg00295.html
> 
> How to reproduce it:
> 
> $ openssl s_client -connect mail.postaccesslite.com:993
> ...
> a logout
> * BYE Courier-IMAP server shutting down
> a OK LOGOUT completed
> read:errno=0
> 
> It takes around a minute to return to the shell prompt after
> the 'a logout'.
> 
> Eduardo couldn't reproduce it.

Me neither.  Seems to be a local problem.

Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                                mailto:cygwin@cygwin.com
Red Hat, Inc.

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

Re: OpenSSL problem ? (Was Re: Pine 4.58 for Cygwin takes a very long time to close a certain IMAP INBOX)

[Frédéric L. W. Meunier]

nOn Tue, 11 Nov 2003, Corinna Vinschen wrote:

> On Tue, Nov 11, 2003 at 01:52:36AM -0200, Fr?d?ric L. W. Meunier wrote:
> > OK, so here's what turns out to be an OpenSSL issue. All thanks
> > to Eduardo.
> >
> > On Mon, 10 Nov 2003, Eduardo Chappa wrote:
> >
> > > *** Fr?d?ric L. W. Meunier wrote on Nov 11, 2003:
> > >
> > > :) > Is there any delay?
> > > :)
> > > :) Yes.
> > >
> > > Ok, this means that the problem is not Pine. It's openssl. You may want to
> > > repeat the experiment and see if
> > >
> > > openssl s_client -connect mail.postaccesslite.com:993
> > >
> > > a logout
> > >
> > > repeats the problem.
> >
> > Yes, it does, and may be easier for others to try to reproduce.
> >
> > > In any case, the problem is not Pine. You may want to contact
> > > the openssl maintainer to see what s/he says.
> >
> > At first I'm redirecting it to the Cygwin mailing-list since it
> > works on Linux.
> >
> > For those of you who aren't aware, all started with
> > http://sources.redhat.com/ml/cygwin/2003-11/msg00295.html
> >
> > How to reproduce it:
> >
> > $ openssl s_client -connect mail.postaccesslite.com:993
> > ...
> > a logout
> > * BYE Courier-IMAP server shutting down
> > a OK LOGOUT completed
> > read:errno=0
> >
> > It takes around a minute to return to the shell prompt after
> > the 'a logout'.
> >
> > Eduardo couldn't reproduce it.
>
> Me neither.  Seems to be a local problem.

I don't see what could be wrong with my installation.

Anyway, any steps I can do to debug it are appreciated.

-- 
How to contact me - http://www.pervalidus.net/contact.html

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

Re: OpenSSL problem ? (Was Re: Pine 4.58 for Cygwin takes a very long time to close a certain IMAP INBOX)

[Brian Ford]

On Tue, 11 Nov 2003, Frédéric L. W. Meunier wrote:
> On Tue, 11 Nov 2003, Corinna Vinschen wrote:
> > Me neither.  Seems to be a local problem.
>
> I don't see what could be wrong with my installation.
>
More likely, your network setup.

> Anyway, any steps I can do to debug it are appreciated.
>
You might post/analyze an strace of it to see what call is taking so long.

-- 
Brian Ford
Senior Realtime Software Engineer
VITAL - Visual Simulation Systems
FlightSafety International
Phone: 314-551-8460
Fax:   314-551-8444

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

Re: OpenSSL problem ? (Was Re: Pine 4.58 for Cygwin takes a very long time to close a certain IMAP INBOX)

[Frédéric L. W. Meunier]

On Tue, 11 Nov 2003, Brian Ford wrote:

> On Tue, 11 Nov 2003, Frédéric L. W. Meunier wrote:
> > On Tue, 11 Nov 2003, Corinna Vinschen wrote:
> > > Me neither.  Seems to be a local problem.
> >
> > I don't see what could be wrong with my installation.
> >
> More likely, your network setup.
>
> > Anyway, any steps I can do to debug it are appreciated.
> >
> You might post/analyze an strace of it to see what call is taking so long.

http://pervalidus.port5.com/tmp/imap.txt.gz

15:51:29 -> 15:53:55

-- 
How to contact me - http://www.pervalidus.net/contact.html

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

Re: OpenSSL problem ? (Was Re: Pine 4.58 for Cygwin takes a very long time to close a certain IMAP INBOX)

[Frédéric L. W. Meunier]

On Tue, 11 Nov 2003, Brian Ford wrote:

> On Tue, 11 Nov 2003, Frédéric L. W. Meunier wrote:
> > On Tue, 11 Nov 2003, Corinna Vinschen wrote:
> > > Me neither.  Seems to be a local problem.
> >
> > I don't see what could be wrong with my installation.
> >
> More likely, your network setup.

BTW, I forgot that I had built OpenSSL 0.9.7c with Borland C++
to make a Windows Lynx binary.

I tested with this openssl.exe and it returned to the cmd.exe
prompt immediately after I issued the 'a logout'.

-- 
How to contact me - http://www.pervalidus.net/contact.html

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

Re: OpenSSL problem ? (Was Re: Pine 4.58 for Cygwin takes a very long time to close a certain IMAP INBOX)

[Frédéric L. W. Meunier]

On Tue, 11 Nov 2003, Frédéric L. W. Meunier wrote:

> On Tue, 11 Nov 2003, Brian Ford wrote:
>
> > On Tue, 11 Nov 2003, Frédéric L. W. Meunier wrote:
> > > On Tue, 11 Nov 2003, Corinna Vinschen wrote:
> > > > Me neither.  Seems to be a local problem.
> > >
> > > I don't see what could be wrong with my installation.
> > >
> > More likely, your network setup.
>
> BTW, I forgot that I had built OpenSSL 0.9.7c with Borland C++
> to make a Windows Lynx binary.
>
> I tested with this openssl.exe and it returned to the cmd.exe
> prompt immediately after I issued the 'a logout'.

Now I'm trying with gdb, but don't know if the following is
right.

$ openssl s_client -connect mail.postaccesslite.com:993
$ gdb
(gdb) attach PPID of openssl
(gdb) where
#0  0x77f75a59 in ntdll!DbgUiConnectToDbg () from /c/WINDOWS/System32/ntdll.dll
#1  0x77f5f31f in ntdll!KiUserCallbackDispatcher ()
   from /c/WINDOWS/System32/ntdll.dll
#2  0x00000005 in ?? ()
#3  0x00000004 in ?? ()
#4  0x00000001 in ?? ()
#5  0x00e3ffd0 in ?? ()
#6  0x81f2eda8 in ?? ()
#7  0xffffffff in ?? ()
#8  0x77fa88f0 in wcstombs () from /c/WINDOWS/System32/ntdll.dll

Does that help ? What are #2 to #7 ? cygwin1.dll ? The OpenSSL
DLLs ?

Or how am I supposed to see what happens after the 'a logout' ?

-- 
How to contact me - http://www.pervalidus.net/contact.html

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

Re: OpenSSL problem ? (Was Re: Pine 4.58 for Cygwin takes a very long time to close a certain IMAP INBOX)

[Corinna Vinschen]

On Wed, Nov 12, 2003 at 12:20:57AM -0200, Fr?d?ric L. W. Meunier wrote:
> Now I'm trying with gdb, but don't know if the following is
> right.
> 
> $ openssl s_client -connect mail.postaccesslite.com:993
> $ gdb
> (gdb) attach PPID of openssl
> (gdb) where
> #0  0x77f75a59 in ntdll!DbgUiConnectToDbg () from /c/WINDOWS/System32/ntdll.dll
> #1  0x77f5f31f in ntdll!KiUserCallbackDispatcher ()
>    from /c/WINDOWS/System32/ntdll.dll
> #2  0x00000005 in ?? ()
> #3  0x00000004 in ?? ()
> #4  0x00000001 in ?? ()
> #5  0x00e3ffd0 in ?? ()
> #6  0x81f2eda8 in ?? ()
> #7  0xffffffff in ?? ()
> #8  0x77fa88f0 in wcstombs () from /c/WINDOWS/System32/ntdll.dll
> 
> Does that help ? What are #2 to #7 ? cygwin1.dll ? The OpenSSL
> DLLs ?

Nobody can say that.  You should rebuild openssl for Cygwin and
use CFLAGS=-g for the make.  After unpacking the source package,
it's as easy as this:

$ cd openssl-0.9.7c-1
$ ./config --prefix=/usr shared no-idea no-rc5 no-mdc2
$ make depend CFLAGS=--g
$ make CFLAGS=-g

Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                                mailto:cygwin@cygwin.com
Red Hat, Inc.

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

Re: OpenSSL problem ? (Was Re: Pine 4.58 for Cygwin takes a very long time to close a certain IMAP INBOX)

[Frédéric L. W. Meunier]

On Wed, 12 Nov 2003, Corinna Vinschen wrote:

> On Wed, Nov 12, 2003 at 12:20:57AM -0200, Fr?d?ric L. W. Meunier wrote:
> > Now I'm trying with gdb, but don't know if the following is
> > right.
> >
> > $ openssl s_client -connect mail.postaccesslite.com:993
> > $ gdb
> > (gdb) attach PPID of openssl
> > (gdb) where
> > #0  0x77f75a59 in ntdll!DbgUiConnectToDbg () from /c/WINDOWS/System32/ntdll.dll
> > #1  0x77f5f31f in ntdll!KiUserCallbackDispatcher ()
> >    from /c/WINDOWS/System32/ntdll.dll
> > #2  0x00000005 in ?? ()
> > #3  0x00000004 in ?? ()
> > #4  0x00000001 in ?? ()
> > #5  0x00e3ffd0 in ?? ()
> > #6  0x81f2eda8 in ?? ()
> > #7  0xffffffff in ?? ()
> > #8  0x77fa88f0 in wcstombs () from /c/WINDOWS/System32/ntdll.dll
> >
> > Does that help ? What are #2 to #7 ? cygwin1.dll ? The OpenSSL
> > DLLs ?
>
> Nobody can say that.  You should rebuild openssl for Cygwin and
> use CFLAGS=-g for the make.  After unpacking the source package,
> it's as easy as this:
>
> $ cd openssl-0.9.7c-1
> $ ./config --prefix=/usr shared no-idea no-rc5 no-mdc2
> $ make depend CFLAGS=--g
> $ make CFLAGS=-g

If the above gdb commands were right, using

2896329 Nov 12 11:56 cygcrypto-0.9.7.dll
618518 Nov 12 11:56 cygssl-0.9.7.dll
929614 Nov 12 11:56 openssl.exe

didn't change anything.

-- 
How to contact me - http://www.pervalidus.net/contact.html

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

Re: OpenSSL problem ? (Was Re: Pine 4.58 for Cygwin takes a very long time to close a certain IMAP INBOX)

[Brian Ford]

Corinna,

Did you get a chance to look at the strace output he posted here:

http://pervalidus.port5.com/tmp/imap.txt.gz

A glance there by trained eyes might save him some time.  I don't have the
time or the training for mine :).  It appears to be stuck in close on the
socket after is has shutdown?

On Wed, 12 Nov 2003, Frédéric L. W. Meunier wrote:
> On Wed, 12 Nov 2003, Corinna Vinschen wrote:
> > On Wed, Nov 12, 2003 at 12:20:57AM -0200, Fr?d?ric L. W. Meunier wrote:
> > > Now I'm trying with gdb, but don't know if the following is right.
> > >
> > > $ openssl s_client -connect mail.postaccesslite.com:993
> > > $ gdb
> > > (gdb) attach PPID of openssl
> > > (gdb) where
> > > #0  0x77f75a59 in ntdll!DbgUiConnectToDbg () from /c/WINDOWS/System32/ntdll.dll
> > > #1  0x77f5f31f in ntdll!KiUserCallbackDispatcher ()
> > >    from /c/WINDOWS/System32/ntdll.dll
> > > #2  0x00000005 in ?? ()
> > > #3  0x00000004 in ?? ()
> > > #4  0x00000001 in ?? ()
> > > #5  0x00e3ffd0 in ?? ()
> > > #6  0x81f2eda8 in ?? ()
> > > #7  0xffffffff in ?? ()
> > > #8  0x77fa88f0 in wcstombs () from /c/WINDOWS/System32/ntdll.dll
> > >
> > > Does that help ? What are #2 to #7 ? cygwin1.dll ? The OpenSSL
> > > DLLs ?
> >
> > Nobody can say that.  You should rebuild openssl for Cygwin and
> > use CFLAGS=-g for the make.  After unpacking the source package,
> > it's as easy as this:
> >
> > $ cd openssl-0.9.7c-1
> > $ ./config --prefix=/usr shared no-idea no-rc5 no-mdc2
> > $ make depend CFLAGS=--g
> > $ make CFLAGS=-g
>
> If the above gdb commands were right, using
>
> 2896329 Nov 12 11:56 cygcrypto-0.9.7.dll
> 618518 Nov 12 11:56 cygssl-0.9.7.dll
> 929614 Nov 12 11:56 openssl.exe
>
> didn't change anything.
>
From the strace output, I'd say you're stuck in the cygwin1.dll.  Try a
debug build of that instead.

-- 
Brian Ford
Senior Realtime Software Engineer
VITAL - Visual Simulation Systems
FlightSafety International
Phone: 314-551-8460
Fax:   314-551-8444

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

Re: OpenSSL problem ? (Was Re: Pine 4.58 for Cygwin takes a very long time to close a certain IMAP INBOX)

[Frédéric L. W. Meunier]

On Wed, 12 Nov 2003, Brian Ford wrote:

> Corinna,
>
> Did you get a chance to look at the strace output he posted here:
>
> http://pervalidus.port5.com/tmp/imap.txt.gz
>
> A glance there by trained eyes might save him some time.  I don't have the
> time or the training for mine :).  It appears to be stuck in close on the
> socket after is has shutdown?

It seems to be cause by the firewall from my SpeedStream 5200.

'a logout' worked once I disabled filtering 'TCP NULL', but the
Pine delays remain.

Anyway, why it worked on plain Windows and Linux is another
story. I don't have any other firewalls enabled.

-- 
How to contact me - http://www.pervalidus.net/contact.html

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

Re: OpenSSL problem ? (Was Re: Pine 4.58 for Cygwin takes a very long time to close a certain IMAP INBOX)

[Corinna Vinschen]

On Wed, Nov 12, 2003 at 04:15:46PM -0200, Fr?d?ric L. W. Meunier wrote:
> On Wed, 12 Nov 2003, Brian Ford wrote:
> 
> > Corinna,
> >
> > Did you get a chance to look at the strace output he posted here:
> >
> > http://pervalidus.port5.com/tmp/imap.txt.gz
> >
> > A glance there by trained eyes might save him some time.  I don't have the
> > time or the training for mine :).  It appears to be stuck in close on the
> > socket after is has shutdown?
> 
> It seems to be cause by the firewall from my SpeedStream 5200.
> 
> 'a logout' worked once I disabled filtering 'TCP NULL', but the
> Pine delays remain.
> 
> Anyway, why it worked on plain Windows and Linux is another
> story. I don't have any other firewalls enabled.

fhandler_socket::close() tries to circumvent problems with unexpected
data loss which can occur, if an application exits without having
waited for the closesocket() call being successful.  The problem with
the latter is, that there's no way to find out.  Therefore Cygwin
lingers on closesocket(), even with non-blocking sockets.  I don't
know if that helps but you could try to build a Cygwin DLL which only
lingers if shutdown hasn't been called.  I tried it with ssh and it
seems at least not to disturb ssh operation.  Patch below.

Corinna

Index: fhandler_socket.cc
===================================================================
RCS file: /cvs/src/src/winsup/cygwin/fhandler_socket.cc,v
retrieving revision 1.111
diff -u -p -r1.111 fhandler_socket.cc
--- fhandler_socket.cc	25 Sep 2003 03:51:50 -0000	1.111
+++ fhandler_socket.cc	12 Nov 2003 18:32:18 -0000
@@ -1101,14 +1101,17 @@ fhandler_socket::close ()
 {
   int res = 0;
 
-  /* HACK to allow a graceful shutdown even if shutdown() hasn't been
-     called by the application. Note that this isn't the ultimate
-     solution but it helps in many cases. */
-  struct linger linger;
-  linger.l_onoff = 1;
-  linger.l_linger = 240; /* seconds. default 2MSL value according to MSDN. */
-  setsockopt (get_socket (), SOL_SOCKET, SO_LINGER,
-	      (const char *)&linger, sizeof linger);
+  if (!saw_shutdown_write ())
+    {
+      /* HACK to allow a graceful shutdown even if shutdown() hasn't been
+	 called by the application. Note that this isn't the ultimate
+	 solution but it helps in many cases. */
+      struct linger linger;
+      linger.l_onoff = 1;
+      linger.l_linger = 240; /* secs. default 2MSL value according to MSDN. */
+      setsockopt (get_socket (), SOL_SOCKET, SO_LINGER,
+		  (const char *)&linger, sizeof linger);
+    }
 
   while ((res = closesocket (get_socket ())) != 0)
     {


-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                                mailto:cygwin@cygwin.com
Red Hat, Inc.

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/

Re: OpenSSL problem ? (Was Re: Pine 4.58 for Cygwin takes a very long time to close a certain IMAP INBOX)

[Frédéric L. W. Meunier]

On Wed, 12 Nov 2003, Corinna Vinschen wrote:

> On Wed, Nov 12, 2003 at 04:15:46PM -0200, Fr?d?ric L. W. Meunier wrote:
> > On Wed, 12 Nov 2003, Brian Ford wrote:
> >
> > > Corinna,
> > >
> > > Did you get a chance to look at the strace output he posted here:
> > >
> > > http://pervalidus.port5.com/tmp/imap.txt.gz
> > >
> > > A glance there by trained eyes might save him some time.  I don't have the
> > > time or the training for mine :).  It appears to be stuck in close on the
> > > socket after is has shutdown?
> >
> > It seems to be cause by the firewall from my SpeedStream 5200.
> >
> > 'a logout' worked once I disabled filtering 'TCP NULL', but the
> > Pine delays remain.
> >
> > Anyway, why it worked on plain Windows and Linux is another
> > story. I don't have any other firewalls enabled.
>
> fhandler_socket::close() tries to circumvent problems with unexpected
> data loss which can occur, if an application exits without having
> waited for the closesocket() call being successful.  The problem with
> the latter is, that there's no way to find out.  Therefore Cygwin
> lingers on closesocket(), even with non-blocking sockets.  I don't
> know if that helps but you could try to build a Cygwin DLL which only
> lingers if shutdown hasn't been called.  I tried it with ssh and it
> seems at least not to disturb ssh operation.  Patch below.

It behaves the same. I applied your patch and compiled latest
CVS.

6735077 Nov 12 17:02 cygwin1.dll

And in gdb I still see

#2  0x00000005 in ?? ()
#3  0x00000004 in ?? ()
#4  0x00000001 in ?? ()
#5  0x00e3ffd0 in ?? ()
#6  0x81f2eda8 in ?? ()
#7  0xffffffff in ?? ()

Anyway, since disabling filtering 'TCP NULL' worked for 'a
logout' I'll see what I can do in the modem configuration to
make the Pine delays go away. Disabling all ADS (Attack
Detection System), which has:

Same Source and Destination Address
Broadcast Source Address
LAN Source Address On WAN
Invalid IP Packet Fragment
TCP NULL
TCP FIN
TCP Xmas
Fragmented TCP Packet
Fragmented TCP Header
Fragmented UDP Header
Fragmented ICMP Header
Inconsistent UDP/IP header lengths
Inconsistent IP header lengths

didn't help.

-- 
How to contact me - http://www.pervalidus.net/contact.html

--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/