On Fri, 31 Aug 2007, Davide Libenzi wrote:
> On Fri, 31 Aug 2007, Oliver Stöneberg wrote:
>
> > > On Fri, 10 Aug 2007, Oliver St=F6neberg wrote:
> > > > Hi,
> > > >
> > > > we recently started using the TLS features of the XMail and during a
> > > > tcpdump session, someone discovered an issue. After the communication
> > > > is done and the communication should be closed the sending XMail will
> > > > send a RST, instead of closing the connection properly. The mail is
> > > > being send properly, but I have been told this behavior might cause
> > > > problems with some firewalls.
> > > > We also tried it without TLS and the connection is properly closed.
> > > >
> > > > This happened with the final 1.24 on Linux and Windows between two
> > > > XMails.
> > > >
> > > > I checked the code, but didn't see anything TLS specified that might
> > > > causing this problem. Any help or idea is appreciated.
> > >
> > > Can you try to replace the:
> > >
> > > SSL_shutdown(pCtx->pSSL);
> > >
> > > at line 227 of SSLBind.cpp with:
> > >
> > > if (SSL_shutdown(pCtx->pSSL) =3D=3D 0)
> > > SSL_shutdown(pCtx->pSSL);
> > >
> > > and let me know?
> > >
> > >
> > >
> > > - Davide
> >
> > I changed the line and the problem still occurs. I also read the
> > documentation on that function and debugged that part of the XMail
> > code on the sending side and the SSL_shutdown will always return 0. I
> > even did a while loop with that argument and it never returned
> > something else. Maybe there is something wrong on the side of the
> > receiving server. After all this is a communication between two
> > XMails.
>
> Can you try to remove the SSL_shutdown() altogheter?
Also this:
if (SSL_shutdown(pCtx->pSSL) == 0) {
shutdown(pCtx->SockFD, SHUT_WR);
SSL_shutdown(pCtx->pSSL);
}
- Davide
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