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Date: Fri, 9 May 2014 10:47:27 +0200
From: Corinna Vinschen <corinna-cygwin@cygwin.com>
To: cygwin@cygwin.com
Subject: Re: socat with IP6 support?
Message-ID: <20140509084727.GE2645@calimero.vinschen.de>
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References: <52D9A0C9.4080508@etr-usa.com> <20140117213255.GA1843@ednor.casa.cgf.cx> <20140117221946.GA22079@calimero.vinschen.de> <CAF+jOM3YUtgtae5L=kTmaChYRGQYrp6yGg9H8CbFQ3GguW5-0Q@mail.gmail.com> <20140118114751.GC22079@calimero.vinschen.de> <6nnpd9tm0hn3od1ch642flc0upuvr15jau@4ax.com> <20140120172758.GA2357@calimero.vinschen.de> <r9mnm955ummb5mktvm8u4eds49eatpsjab@4ax.com> <20140508201034.GB2645@calimero.vinschen.de> <vhdom9pj43vhf22gavk23ks6g2md18t1uc@4ax.com>
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On May  8 22:05, Andrew Schulman wrote:
> > On May  8 15:23, Andrew Schulman wrote:
> > > > On Jan 20 03:45, Andrew Schulman wrote:
> > > > > Cygwin doesn't seem to
> > > > > define IPV6_DSTOPTS.  In Ubuntu, it's defined in
> > > > > /usr/include/linux/in6.h (value 59), along with a whole bunch of =
other
> > > > > IPv6 socket options.
> > > > >=20
> > > > > I'm not sure what the best solution is here.  I could define it l=
ocally,
> > > > > but would it be better for Cygwin to bring in the missing definit=
ions?
> > > >=20
> > > > I don't think so.  I checked the available options on Windows again,
> > > > and IPV6_DSTOPTS is not supported.  I applied a small patch a few
> > > > minutes ago to add a few socket options our headers were missing,
> > > > but there are still a lot of Linux socket options not supported on
> > > > Windows which hinders CYgwin to support them.
> > > >=20
> > > > Any chance you could tweak this piece of code to be built only
> > > > if IPV6_DSTOPTS is defined?
> > > >=20
> > > > Corinna
> > >=20
> > > I finally got back to this.  I seem to have worked around the problem=
 in
> > > socat v2.  I've uploaded new packages for 1.7 and 2 that have IPv6 su=
pport,
> > > but that will need to be tested.  Andrew
> >=20
> > I can do that in my local IPv6 setup, if you give me an easy example...
> >=20
> > Corinna
>=20
> To copy file1 to file2 on the localhost, run:
>=20
> 	socat tcp6-listen:7777 file2
>=20
> to set up a listener, and:
>=20
> 	socat tcp6:[::1]:7777 file1
>=20
> to connect to the listener and transfer the file.
>=20
> If you have two hosts, you could try the same, running the first command
> on the server, and the second command substituting the ipv6 address of
> the server in place of ::1.

Testing this on 64 bit, with socat 1.7.2.4, and a Linux peer in both
directions works fine.

Do you need a test of the 2.0 test version as well?


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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